class Terminal:
""" """
def __init__(self, settings):
self.settings = settings
self.uart = None
def start(self):
"""Start Terminal on UART0 interface."""
# Conditionally enable terminal on UART0. Default: False.
# https://forum.pycom.io/topic/1224/disable-console-to-uart0-to-use-uart0-for-other-purposes
uart0_enabled = self.settings.get('interfaces.uart0.terminal', False)
if uart0_enabled:
from machine import UART
self.uart = UART(0, 115200)
#self.uart = UART(0)
os.dupterm(self.uart)
else:
self.shutdown()
def stop(self):
"""Shut down."""
log.info('Shutting down Terminal')
self.shutdown()
def shutdown(self):
"""Shut down Terminal and UART0 interface."""
os.dupterm(None)
self.deinit()
def deinit(self):
"""Shut down UART0 interface."""
if self.uart:
log.info('Shutting down UART0')
self.uart.deinit()
class mhz19:
def __init__(self, uart_no):
self.uart_no = uart_no
self.start()
self.ppm = 0
self.temp = 0
self.co2status = 0
def start(self):
self.uart = UART(self.uart_no, 9600)
self.uart.init(9600, bits=8, parity=None, stop=1, timeout=10)
def stop(self):
while self.uart.any():
self.uart.read(1)
self.uart.deinit()
def get_data(self):
self.uart.write(b"\xff\x01\x86\x00\x00\x00\x00\x00\x79")
time.sleep(0.1)
s = self.uart.read(9)
try:
z = bytearray(s)
except:
return 0
# Calculate crc
crc = self.crc8(s)
if crc != z[8]:
# we should restart the uart comm here..
self.stop()
time.sleep(1)
self.start()
print(
'CRC error calculated %d bytes= %d:%d:%d:%d:%d:%d:%d:%d crc= %dn'
% (crc, z[0], z[1], z[2], z[3], z[4], z[5], z[6], z[7], z[8]))
return 0
else:
self.ppm = ord(chr(s[2])) * 256 + ord(chr(s[3]))
self.temp = ord(chr(s[4])) - 40
self.co2status = ord(chr(s[5]))
return 1
def crc8(self, a):
crc = 0x00
count = 1
b = bytearray(a)
while count < 8:
crc += b[count]
count = count + 1
# Truncate to 8 bit
crc %= 256
# Invert number with xor
crc = ~crc & 0xFF
crc += 1
return crc
class CORGI85():
def __init__(self):
try:
fm.register(board_info.WIFI_RX, fm.fpioa.UART2_TX)
fm.register(board_info.WIFI_TX, fm.fpioa.UART2_RX)
self.uart = UART(UART.UART2,
115200,
8,
None,
1,
timeout=1000,
read_buf_len=4096)
print("Init CORGI85")
except:
print("Unable to init UART")
def deinit(self):
self.uart.deinit()
del self.uart
def wifi_check(self):
data = self.uart.read()
self.uart.write("\rWIFI_CHECK,\r")
time.sleep_ms(100)
if self.uart.any() > 0:
data = self.uart.read()
return int(data[0])
else:
return 0
def thingspeak_init(self):
print(">>> thingspeak_init")
self.uart.write("\rThingspeak,init\r")
def thingspeak_account_setup(self, api_key, channel_id):
print(">>> thingspeak_account_setup")
self.uart.write("\rThingspeak,account_setup,")
self.uart.write(str(api_key))
self.uart.write(",")
self.uart.write(str(channel_id))
self.uart.write("\r")
def thingspeak_write_field(self, field, value):
print(">>> thingspeak_write_field, field : ", field, ", value : ",
value)
self.uart.write("\rThingspeak,write_field,")
self.uart.write(str(field))
self.uart.write(",")
self.uart.write(str(value))
self.uart.write("\r")
def writeCommand(self, command):
output = command + '\r\n'
uart = UART(1,
baudrate=9600,
pins=(Pin.exp_board.G9, Pin.exp_board.G8))
uart.write(output)
#wait max 3(s) for output from the sensor
waitcounter = 0
while (waitcounter < 5 and not uart.any()):
time.sleep(0.5)
waitcounter += 1
response = uart.readall()
uart.deinit()
print(response)
return (response)
class DOUBLE_GPS(object):
GGA_MESSAGE = b"$GPGGA,141623.523,2143.963,S,04111.493,W,1,12,1.0,0.0,M,0.0,M,,*65\n"
RMC_MESSAGE = b"$GPRMC,141623.523,A,2143.963,S,04111.493,W,,,301019,000.0,W*7B\n"
UPDATE_RATE_1S = 'PMTK220,1000'
def __init__(self, TX, RX, uart):
self.uart = UART(uart, baudrate=9600)
self.uart.init(9600, bits=8, tx=TX, rx=RX)
self.flag = False
def make_data_available(self, NMEA_sentence):
self.uart.write(NMEA_sentence)
def received_command(self):
command = self.uart.readline()
if (command != None):
command, received_check_sum = command.split(b'*')
command = command.strip(b'$')
received_check_sum = received_check_sum[0:2]
generated_check_sum = self.generate_checksum(command)
command = command.decode()
if command == self.UPDATE_RATE_1S:
self.continuous_mode()
self.flag = True
return command
else:
return None
def generate_checksum(self, command):
checksum = 0
for char in command:
checksum ^= char
return checksum
def continuous_mode(self):
self.my_timer = Timer(1)
self.my_timer.init(period=1000,
mode=self.my_timer.PERIODIC,
callback=self.my_callback)
def my_callback(self, timer):
self.make_data_available(self.RMC_MESSAGE)
def deinit(self):
self.uart.deinit()
if hasattr(self, 'my_timer'):
self.my_timer.deinit()
class Serial:
""" 使用ESP32的串口连接外部设备
"""
def __init__(self,
id=2,
baudrate=2000000,
rx_pin=14,
tx_pin=12,
timeout=2000,
timeout_char=10):
import select
self.uart = UART(id,
baudrate,
rx=rx_pin,
tx=tx_pin,
timeout=timeout,
rxbuf=4096)
self.poll = select.poll()
self.poll.register(self.uart, select.POLLIN)
def close(self):
self.uart.deinit()
def read(self, size=1):
data = self.uart.read(size)
if data == None:
data = b""
return data
# data = b""
# while len(data) < size:
# r = self.uart.read(size - len(data))
# if r:
# data += r
# return data
def write(self, data):
return self.uart.write(data)
def inWaiting(self):
res = self.poll.poll(0)
if res:
return 1
return 0
class SEN0219_SERIAL:
# byte mhzCmdReadPPM[9] = {0xFF,0x01,0x86,0x00,0x00,0x00,0x00,0x00,0x79};
# byte mhzResp[9]; // 9 bytes bytes response
# byte mhzCmdCalibrateZero[9] = {0xFF,0x01,0x87,0x00,0x00,0x00,0x00,0x00,0x78};
# byte mhzCmdABCEnable[9] = {0xFF,0x01,0x79,0xA0,0x00,0x00,0x00,0x00,0xE6};
# byte mhzCmdABCDisable[9] = {0xFF,0x01,0x79,0x00,0x00,0x00,0x00,0x00,0x86};
# byte mhzCmdReset[9] = {0xFF,0x01,0x8d,0x00,0x00,0x00,0x00,0x00,0x72};
def __init__(self, TX, RX):
self.uart = UART(1, 9600, bits=8, parity=None, stop=1, pins=(TX,RX))
#self.uart.write(b'\xFF\x01\x8D\x00\x00\x00\x00\x00\x72') #Reset
def deinit(self):
self.uart.deinit()
def SEN_Serial_ABCOn(self):
self.uart.write(b'\xFF\x01\x79\xA0\x00\x00\x00\x00\xE6') #ABC On
self.uart.wait_tx_done(1000)
def SEN_Serial_ABCOff(self):
self.uart.write(b'\xFF\x01\x79\x00\x00\x00\x00\x00\x86') #ABC Off
self.uart.wait_tx_done(1000)
def SEN_Serial_read(self):
self.uart.write(b'\xFF\x01\x86\x00\x00\x00\x00\x00\x79') #get gas command
self.uart.wait_tx_done(1000)
Attempts=5
while(Attempts>0):
data=self._SerialRead()
if(data!=False):
return data
Attempts-=1
utime.sleep(1)
return False
def _SerialRead(self):
print(str(self.uart.any()))
if(self.uart.any()>=9):
data=self.uart.read(9)
return data
else:
return False
def chk_GNSS():
while True:
u = UART(1, 9600)
u.init(9600, bits=8, parity=None, stop=1)
# UBX-NAV-STATUS hex poll command to check if position fix
buf = b'\xB5\x62\x01\x03\x00\x00\x04\x0D'
REGISTER_FORMAT = '>b' # one byte for nav status
u.write(buf)
#sleep(1)
while not u.any():
if u.any():
break
# read 24 bytes
poll = u.read(24)
# offset for nav fix byte = 6 + 5
nav_fix = ustruct.unpack_from(REGISTER_FORMAT, poll, 11)[0]
print('nav fix= ', (nav_fix & 0x01))
# offset for nav status code byte = 6 + 4
nav_stat = ustruct.unpack_from(REGISTER_FORMAT, poll, 10)[0]
print('nav status code= ', nav_stat)
# UBX-NAV-POSLLH hex poll command
buf = b'\xB5\x62\x01\x02\x00\x00\x03\x0A'
# send poll command
u.write(buf)
while not u.any():
if u.any():
break
# read UBX-NAV-POSLLH poll result
poll = u.read(36)
u.deinit() # this closes the UART
#print ('read nav data ',poll)
REGISTER_FORMAT = '<i' # little endian 4 bytes
# offset for longitude status byte = 6 + 4
lon = ustruct.unpack_from(REGISTER_FORMAT, poll, 10)[0]
lat = ustruct.unpack_from(REGISTER_FORMAT, poll, 14)[0]
if (nav_fix & 0x01) != 1:
print('no GNSS signal', (nav_fix / 2))
else:
print('longitude= ', (lon / 1E7))
print('latitude= ', (lat / 1E7))
sleep(2)
class MHZ19:
def __init__(self, rx_pin: int, tx_pin: int):
self.uart = UART(2, baudrate=9600, rx=rx_pin, tx=tx_pin, timeout=100)
def close(self):
try:
self.uart.deinit()
except:
pass
def _cmd(self, cmd: int, cmd_data: bytes, resp_len: int):
req_bytes = bytearray([
0xff, # Fixed start byte.
1, # Sensor num.
cmd,
])
req_bytes += cmd_data
req_bytes += bytes([0] * (8 - len(req_bytes)))
req_bytes += bytes([MHZ19._checksum(req_bytes[1:])])
assert len(req_bytes) == 9
bytes_written = self.uart.write(req_bytes)
assert bytes_written is not None
if resp_len == 0:
return
resp_bytes = self.uart.read(resp_len)
if len(resp_bytes) != resp_len:
raise Exception('mhz19: not enough bytes received: %d' % len(resp_bytes))
if resp_bytes[-1] != MHZ19._checksum(resp_bytes[1:-1]):
raise MHZ19ChecksumError()
return resp_bytes[2:]
def gas_concentration(self) -> int:
resp = self._cmd(0x86, bytes(), 9)
return resp[0]<<8 | resp[1]
@staticmethod
def _checksum(data: bytes) -> int:
return ((0xff - sum(data) & 0xff) + 1) & 0xff
class Positioning(object): def __init__(self, TX, RX, uart): self.uart = UART(uart, baudrate=9600) self.uart.init(9600,bits=8,tx=TX,rx=RX) self.gps = GPS(self.uart) def send_command(self, command): self.gps.send_command(command) def received_command(self): command = self.uart.readline() if(command != None): return command else: return None def get_latitude(self): self.gps.update() return self.gps.latitude def deinit(self): self.uart.deinit()
def checkNetwork():
fm.register(6, fm.fpioa.UART1_TX)
fm.register(7, fm.fpioa.UART1_RX)
serial = UART(UART.UART1,
115200,
8,
None,
1,
timeout=1000,
read_buf_len=4096)
start = utime.ticks_ms()
serial.write('at\r\n')
while True:
data = serial.read()
if 'OK' in data:
print(data)
showInfo("esp32 respone is OK", True)
break
if utime.ticks_ms() > 3000:
showInfo("esp32 no respone", False)
break
serial.deinit()
del serial
def takePhotoAndSaveToFile(filename=None, retry=True):
global uart
SDCard.mountSDCard()
uart = UART(2, baudrate=BAUD, pins=(TX,RX), timeout_chars=5)
uart.readall()
setsize(VC0706_160x120)
reset()
uart.readall()
if(not getversion()):
print("Camera not found")
return(0)
if takephoto():
if(filename == None):
filename = ''.join(map(str,RTC().now()))+'.jpg';
f = open('/sd/'+filename, 'wb');
try:
gc.collect()
readbuffer(getbufferlength(), f)
return filename
except Exception as e:
print(e)
if(retry):
try:
time.sleep(2)
f.close()
gc.collect()
return takePhotoAndSaveToFile(filename, False)
except Exception as ee:
print(ee)
finally:
f.close()
uart.deinit()
gc.collect()
def config_M8():
u = UART(1, 9600)
u.init(9600, bits=8, parity=None, stop=1)
# UBX-CFG-PRT command to set UART1 output=0 (UBX output only) and 9600 baud
buf1 = b'\xB5\x62\x06\x00\x14\x00\x01\x00\x00\x00\xC0\x08\x00\x00\x80\x25\x00\x00\x07\x00\x01\x00\x00\x00\x00\x00\x90\xA9'
u.write(buf1)
# catch ack
while not u.any():
if u.any():
break
poll = u.read()
# write UBX-CFG-PRT poll command
buf1 = b'\xB5\x62\x06\x00\x01\x00\x01\x08\x22'
u.write(buf1)
# catch poll response
while not u.any():
if u.any():
break
poll = u.read()
u.deinit() # this closes the UART
REGISTER_FORMAT = '<i' # little endian 4 bytes
# offset for baud rate = 6 + 8
baud = ustruct.unpack_from(REGISTER_FORMAT, poll, 14)[0]
print('baud rate= ', baud)
def identify(self):
found = []
for one in self.UARTs:
if (len(one) != 2) or (not type(one[0]) is str) or (not type(one[1]) is str):
continue
ser = UART(len(self.uart), baudrate=9600, pins=one, timeout_chars=20)
if self.debug: print("Try UART pins Tx %s, Rx %s" % one)
for i in range(0,3): # try 3 times to read known pattern
line = []
sleep(2)
try: line = ser.readall()
except:
print("Read error")
continue
if (line == None) or (not len(line)): # try to wake up
if not 'dust' in found:
if self.debug: print("Try to wake up device")
if not i: ser.write(b'BM\xe1\x00\x01\x01q') # try activate PMS
elif i < 2: ser.write(b'\xAA\xB4\x06\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF\x06\xAB') # second try activate SDS
continue
# if self.debug: print("Read: %s" % line)
if line.count(b'BM') > 0: # start char 0x42,0x4D
self.dust = 'PMSx003'; self.D_Tx = one[0]; self.D_Rx = one[1]
found.append('dust')
elif line.count(b'\xAA') and line.count(b'\xC0'): # start char 0xAA,0xC0 tail 0xAB
self.dust = 'SDS011'; self.D_Tx = one[0]; self.D_Rx = one[1]
found.append('dust')
elif line.count(b'\r\n') or (line.count(b',') > 1):
self.useGPS = 'UART'; self.G_Tx = one[0]; self.G_Rx = one[1]
found.append('gps')
else: continue
if self.debug: print("UART: %s on Tx %s, Rx %s" % (found[-1], one[0],one[1]))
break
if i > 2: print("Unknown device found on Tx %s, Rx %s" % one)
ser.readall(); ser.deinit(); del ser
return found
sys.exit()
uart = UART(2, 115200)
print(uart)
uart.init(57600, 8, None, 1, pins=('P11', 'P12'))
uart.init(baudrate=9600, stop=2, parity=UART.EVEN, pins=('P11', 'P12'))
uart.init(baudrate=115200, parity=UART.ODD, stop=1, pins=('P11', 'P12'))
uart.read()
print (uart.read())
print (uart.readline())
buff = bytearray(1)
print (uart.readinto(buff, 1))
print (uart.read())
print (uart.any())
print (uart.write('a'))
uart.deinit()
uart = UART(2, 1000000, pins=('P12', 'P11'))
print(uart)
uart.read()
print(uart.write(b'123456') == 6)
print(uart.read() == b'123456')
uart.deinit()
uart = UART(2, 1000000, pins=('P11', 'P12'))
print(uart)
uart.read()
print(uart.write(b'123456') == 6)
print(uart.read() == b'123456')
uart.deinit()
uart = UART(2, 1000000, pins=('P11', 'P12'))
def getConf(self, atype, pins, pwr=None):
#self.conf = { # PCB TTL defaults example
# 'usb': {'name':'usb', 'pins':('P1','P0','P20'), 'use':False, 'baud':None},
# 'dust': {'name':'PMSx003','pins':('P11','P10','P9'), 'use':None, 'baud':9600},
# 'gps': {'name':'NEO-6', 'pins':('P4'.'P3','P19'), 'use':None, 'baud':9600},
# }
pins = tuple(pins)
try:
if self.conf[atype]['pins'] == pins:
if self.conf[atype]['name']: return self.conf[atype]
except: pass
data = [
(b'\x42\x4D\xE1\x00\x01\x01\x71',9600), # PMS
(b'\x7E\x00\xD0\x01\x01\x2D\x7E',115200), # SPS info
(b'\x7E\x00\x00\x02\x01\x03\xF9\x7E',115200), # SPS start
(b'\xAA\xB4\x06\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF\x06\xAB',9600), # SDS
]
for baudrate in [9600, 115200]:
if self.debug: print("Try uart (baud=%d) pins: " % baudrate, pins)
if not (0 <= self.index < 3): raise ValueError("UART index %d fail" % nr)
prev = self.Power(pins, on=True)
if not prev: sleep_ms(500)
ser = UART(self.index, baudrate=baudrate, pins=pins[:2], timeout_chars=20)
fnd = None
if self.debug: print("getIdent type %s" % atype)
for i in range(0,2*len(data)):
if data[i%len(data)][1] != baudrate: continue
if not ser.any():
sleep_ms(5*500 if atype == 'dust' else 500)
try:
line = ser.read()
if self.debug: print("Read: ", line)
except Exception as e:
if self.debug: print("TTL dev search %s" % e)
continue
if (atype == 'dust') and ((line == None) or (not len(line))): # try to wake up
activate = data[i % len(data)][0]
if self.debug: print("%d: Try a wakeup, send: " % i, activate)
ser.write(activate)
sleep_ms(500)
continue
else:
if not line: continue
if line.count(b'u-blox'): fnd = 'NEO-6'
elif line.count(b'$GPTXT') or line.count(b'$GNG') or line.count(b'$GPG'): fnd = 'GPS'
elif line.count(b'\x42\x4D') or line.count(b'BM\x00\x1C'): fnd = 'PMSx003'
elif line.count(b'\xAA') and line.count(b'\xC0'): fnd = 'SDS011'
elif line.count(b'~\x00\xD0\x00'): fnd = 'SPS30'
elif line.count(b'~\x00\x00') or line.count(b'\x00\xFF~'): fnd = 'SPS30'
if fnd: break
ser.read(); ser.deinit(); del ser; self.Power(pins,on=prev)
use = True; Dexplicit = None; calibrate = None
if atype == 'dust':
try: from Config import useDust as use
except: pass
Dexplicit = False
try: from Config import Dexplicit
except: pass
if not 'calibrate' in self.conf.keys():
calibrate = None
try: from Config import calibrate
except: pass
self.config['calibrate'] = calibrate
elif atype.lower() == 'gps':
try: from Config import useGPS as use
except: pass
if fnd:
thisConf = { 'name': fnd, 'baud': baudrate, 'pins': pins, 'use': use }
if Dexplicit != None: thisConf['explicit'] = Dexplicit
if calibrate != None: thisConf['calibrate'] = calibrate
self.conf[atype] = thisConf; self.conf['updated'] = True
self.allocated.append(pins)
return self.conf[atype]
if (not pins[2]) and pwr:
for dlf in 'P19','P20': # try dflts: P1? in V2.1
fnd = self.getConf(atype,(pins[0],pins[1],dlf),baudrate=baudrate)
if fnd: return fnd
return None
class LPF2(object):
def __init__(self,
uartChannel,
txPin,
rxPin,
modes=defaultModes,
sensorType=WeDo_Ultrasonic,
timer=3,
freq=5):
self.txPin = txPin
self.rxPin = rxPin
print('Start!')
debug(9, 'debug1')
self.uart = UART(uartChannel, 2400)
debug(9, 'debug2')
self.uart.init(baudrate=2400, tx=txPin, rx=rxPin)
debug(9, 'debug3')
self.txTimer = timer
self.modes = modes
self.current_mode = 0
self.sensorType = sensorType
self.connected = False
self.payload = [bytearray([])] * len(self.modes)
self.freq = freq
self.oldbuffer = bytes([])
self.textBuffer = bytearray(b' ')
self.lastHeartbeat = None
# -------- Payload definition
def load_payload(self,
dataType,
array,
mode=None): # note it must be a power of 2 length
if (mode == None):
mode = self.current_mode
if isinstance(array, list):
bit = math.floor(math.log2(length[dataType] * len(array)))
bit = 4 if bit > 4 else bit # max 16 bytes total (4 floats)
array = array[:math.floor(
(2**bit) / length[dataType])] # max array size is 16 bytes
value = b''
for element in array:
value += struct.pack(dataFormat[dataType], element)
elif isinstance(array, bytes):
bit = int(math.log2(len(array)))
value = array
else:
bit = int(math.log2(length[dataType]))
value = struct.pack(dataFormat[dataType], array)
payload = bytearray([CMD_Data | (bit << CMD_LLL_SHIFT) | mode]) + value
payload = self.addChksm(payload)
self.payload[mode] = payload
#----- comm stuff
def hubCallback(self, timerInfo):
heartbeatReceived = False
if self.connected:
char = readchar(self.uart) # read in any heartbeat bytes
while char >= 0:
if char == 0: # port has nto been setup yet
pass
elif char == BYTE_NACK: # regular heartbeat pulse
heartbeatReceived = True
self.lastHeartbeat = utime.ticks_ms()
elif char == CMD_Select: # reset the mode
mode = readchar(self.uart)
cksm = readchar(self.uart)
if cksm == 0xff ^ CMD_Select ^ mode:
self.current_mode = mode
# modeChangeAnnouncement = bytearray(b'\x46') + self.current_mode.to_bytes(1, 'lsb')
# modeChangeAnnouncement = self.addChksm(modeChangeAnnouncement)
# self.writeIt(modeChangeAnnouncement)
print("Mode change:", mode)
elif char == 0x46: # sending over a string
zero = readchar(self.uart)
b9 = readchar(self.uart)
ck = 0xff ^ zero ^ b9
if ((zero == 0) &
(b9 == 0xb9)): # intro bytes for the string
char = readchar(self.uart) # size and mode
size = 2**((char & 0b111000) >> 3)
mode = char & 0b111
ck = ck ^ char
for i in range(len(self.textBuffer)):
self.textBuffer[i] = ord(b' ')
for i in range(size):
self.textBuffer[i] = readchar(self.uart)
ck = ck ^ self.textBuffer[i]
print(self.textBuffer)
cksm = readchar(self.uart)
if cksm == ck:
pass
elif char == 0x4C: # no idea what it is - but it sends a 0x20
thing = readchar(self.uart)
cksm = readchar(self.uart)
if cksm == 0xff ^ 0x4C ^ thing:
pass
else:
print(char)
char = readchar(self.uart)
if (heartbeatReceived):
size = self.writeIt(
self.payload[self.current_mode]) # send out the latest payload
if not size:
self.conected = False
# for m in range(len(self.modes)):
# size = self.writeIt(self.payload[m])
# utime.sleep_ms(20)
# if not size:
# self.connected = False
if (utime.ticks_diff(utime.ticks_ms(),
self.lastHeartbeat) > HEARTBEAT_TIMEOUT
): # no heartbeat received for a while; we're dead
self.connected = False
def writeIt(self, array):
debug(2, 'SENT:' + str(binascii.hexlify(array)))
return self.uart.write(array)
def waitFor(self, char, timeout=2):
starttime = utime.time()
currenttime = starttime
status = False
while (currenttime - starttime) < timeout:
utime.sleep_ms(5)
currenttime = utime.time()
if self.uart.any() > 0:
data = readchar(self.uart)
if data == ord(char):
status = True
break
return status
def addChksm(self, array):
chksm = 0
for b in array:
chksm ^= b
chksm ^= 0xFF
array.append(chksm)
return array
# ----- Init and close
def init(self):
debug(9, 'debug4')
# self.uart.deinit()
debug(9, 'debug5')
# self.tx = machine.Pin(self.txPin, machine.Pin.OUT)
# self.rx = machine.Pin(self.rxPin, machine.Pin.IN)
# self.tx.value(0)
# utime.sleep_ms(500)
# self.tx.value(1)
debug(9, 'debug6')
self.uart.init(baudrate=2400, bits=8, parity=None, stop=1)
debug(9, 'debug7')
self.writeIt(b'\x00')
def close(self):
self.uart.deinit()
# self.sendTimer.callback(None)
self.sendTimer.deinit()
self.connected = False
# ---- settup definitions
def setType(self, sensorType):
return self.addChksm(bytearray([CMD_Type, sensorType]))
def defineBaud(self, baud):
rate = baud.to_bytes(4, 'little')
return self.addChksm(bytearray([CMD_Baud]) + rate)
def defineVers(self, hardware, software):
hard = hardware.to_bytes(4, 'big')
soft = software.to_bytes(4, 'big')
return self.addChksm(bytearray([CMD_Vers]) + hard + soft)
def padString(self, string, num, startNum):
reply = bytearray([startNum]) # start with name
reply += string
exp = math.ceil(math.log2(
len(string))) if len(string) > 0 else 0 # find the next power of 2
size = 2**exp
exp = exp << 3
length = size - len(string)
for i in range(length):
reply += bytearray([0])
return self.addChksm(bytearray([CMD_ModeInfo | exp | num]) + reply)
def buildFunctMap(self, mode, num, Type):
exp = 1 << CMD_LLL_SHIFT
mapType = mode[0]
mapOut = mode[1]
return self.addChksm(
bytearray([CMD_ModeInfo | exp | num, Type, mapType, mapOut]))
def buildFormat(self, mode, num, Type):
exp = 2 << CMD_LLL_SHIFT
sampleSize = mode[0] & 0xFF
dataType = mode[1] & 0xFF
figures = mode[2] & 0xFF
decimals = mode[3] & 0xFF
return self.addChksm(
bytearray([
CMD_ModeInfo | exp | num, Type, sampleSize, dataType, figures,
decimals
]))
def buildRange(self, settings, num, rangeType):
exp = 3 << CMD_LLL_SHIFT
minVal = struct.pack('<f', settings[0])
maxVal = struct.pack('<f', settings[1])
return self.addChksm(
bytearray([CMD_ModeInfo | exp | num, rangeType]) + minVal + maxVal)
def defineModes(self, modes):
length = (len(modes) - 1) & 0xFF
views = 0
for i in modes:
if (i[7]):
views = views + 1
views = (views - 1) & 0xFF
return self.addChksm(bytearray([CMD_Mode, length, views]))
def setupMode(self, mode, num):
self.writeIt(self.padString(mode[0], num, NAME)) # write name
self.writeIt(self.buildRange(mode[2], num, RAW)) # write RAW range
self.writeIt(self.buildRange(mode[3], num, Pct)) # write Percent range
self.writeIt(self.buildRange(mode[4], num, SI)) # write SI range
self.writeIt(self.padString(mode[5], num, SYM)) # write symbol
self.writeIt(self.buildFunctMap(mode[6], num,
FCT)) # write Function Map
self.writeIt(self.buildFormat(mode[1], num, FMT)) # write format
# ----- Start everything up
def initialize(self):
self.connected = False
self.sendTimer = Timer(
self.txTimer) #, freq = self.freq) # default is 200 ms
# self.sendTimer.init(mode=Timer.PERIODIC, freq=self.freq)
self.init()
debug(9, 'debug8')
self.writeIt(
self.setType(self.sensorType)
) # set type to 35 (WeDo Ultrasonic) 61 (Spike color), 62 (Spike ultrasonic)
self.writeIt(self.defineModes(self.modes)) # tell how many modes
self.writeIt(self.defineBaud(MAX_BAUD))
self.writeIt(self.defineVers(2, 2))
num = len(self.modes) - 1
for mode in reversed(self.modes):
self.setupMode(mode, num)
num -= 1
utime.sleep_ms(5)
self.writeIt(b'\x04') #ACK
# Check for ACK reply
self.connected = self.waitFor(b'\x04')
print('Success' if self.connected else 'Failed')
# Reset Serial to High Speed
# pull pin low
# self.uart.deinit()
if self.connected:
# tx = machine.Pin(self.txPin, machine.Pin.OUT)
# tx.value(0)
# utime.sleep_ms(10)
#change baudrate
self.uart.init(baudrate=MAX_BAUD, bits=8, parity=None, stop=1)
for m in range(len(self.modes)):
self.load_payload('uInt8', 0, mode=m)
#start callback - MAKE SURE YOU RESTART THE CHIP EVERY TIME (CMD D) to kill previous callbacks running
# self.sendTimer.callback(self.hubCallback)
self.sendTimer.init(mode=Timer.PERIODIC,
freq=self.freq,
callback=self.hubCallback)
return
sensor.run(1)
fm.register(board_info.PIN15, fm.fpioa.UART1_TX)
fm.register(board_info.PIN17, fm.fpioa.UART1_RX)
uart_A = UART(UART.UART1, 115200, 8, None, 1, timeout=1000, read_buf_len=4096)
classes = ["racoon"]
task = kpu.load(0x600000)
anchor = (0.57273, 0.677385, 1.87446, 2.06253, 3.33843, 5.47434, 7.88282,
3.52778, 9.77052, 9.16828)
a = kpu.init_yolo2(task, 0.3, 0.3, 5, anchor)
while (True):
img = sensor.snapshot()
#.rotation_corr(z_rotation=90.0)
#a = img.pix_to_ai()
code = kpu.run_yolo2(task, img)
if code:
for i in code:
a = img.draw_rectangle(i.rect(), color=(0, 255, 0))
a = img.draw_string(i.x(),
i.y(),
classes[i.classid()],
color=(255, 0, 0),
scale=3)
uart_A.write(str(i.rect()))
a = lcd.display(img)
else:
a = lcd.display(img)
a = kpu.deinit(task)
uart_A.deinit()
del uart_A
class ArloRobot(object):
# com packet sending
def com(self, packet):
for i in packet:
self.uart.write(i)
self.uart.write(" ")
self.uart.write("\r")
tinit = utime.ticks_ms()
resp = ''
while (utime.ticks_ms() - tinit) < 150: #timeout of 1600us
data = self.uart.read(1)
if data is not None and data != b'\r':
resp = resp + str(data)[2:][:-1]
if resp is not None:
resp = resp.split("xd6")[-1].split("xc3")[-1].split(" ")
try:
resp = [int(i) for i in resp]
except:
return None
if len(resp) != 2:
return resp[0]
return resp
return resp
# set up/set down
# serialid is defined as the ID of the serial bus from the
# microcontroller, however tx and rx can be defined
def __init__(self, serialid=2, tx=17, rx=16, baudrate=19200):
self.tx = tx
self.rx = rx
self.baudrate = baudrate
self.uart = UART(serialid, self.baudrate)
self.uart.init(self.baudrate,
bits=8,
parity=None,
stop=1,
txbuf=0,
tx=self.tx,
rx=self.rx)
self.com(["TXPIN", "CH2"]) #needed so that reading is possible
self.com(["DEC"])
self.com(["ECHO", "ON"])
# end serial connection
def end(self):
self.uart.deinit()
#-------------------------- movements methods------------------------
# Turn command
# motor_movements corresponds to the amount of encode positions
# top_speed to the positions per second
def turn(self, motor_movement, top_speed):
self.com(["TURN", str(motor_movement), str(top_speed)])
# arc turns the motors so that the platform moves along the arc of a circle
# of a given radius with a speed and an angle
def arc(self, radius, top_speed, angle):
self.com(["ARC", str(radius), str(top_speed), str(angle)])
# left/right -> -32767 to 32767
# speed -> 1 to 32767
def move(self, left, right, speed):
self.com(["MOVE", str(left), str(right), str(speed)])
# left/right -> -32767 to 32767
def go_speed(self, left, right):
self.com(["GOSPD", str(left), str(right)])
# left/right -> -127 to 127
def go(self, left, right):
self.com(["GO", str(left), str(right)])
def travel(self, distance, top_speed, angle):
self.com(["TRVL", str(distance), str(top_speed), str(angle)])
#--------------------------- information methods -----------------------
def read_left_counts(self):
return self.com(["DIST"])[0]
def read_right_counts(self):
return self.com(["DIST"])[1]
def read_left_speed(self):
return self.com(["SPD"])[0]
def read_right_speed(self):
return self.com(["SPD"])[1]
def read_head_angle(self):
return self.com(["HEAD"])[0]
def read_firmware_ver(self):
return self.com(["VER"])
def read_hardware_ver(self):
return self.com(["HWVER"])
def clear_counts(self):
return self.com(["RST"])
# ---------------------------- communication modes -----------------------
def write_pulse_mode(self):
self.com(["PULSE"])
def set_lf_mode(self, status):
return self.com(["SETLF", str(status)])
def set_hex_com(self):
return self.com(['HEX'])
def set_dec_com(self):
return self.com(['DEC'])
def set_echo_mode(self, status):
return self.com(["ECHO", str(status)])
def set_verbose_mode(self, status):
return self.com(["VERB", str(status)])
def set_rx_pin(self, pin):
return self.com(["RXPIN", str(pin)])
def set_tx_pin(self, pin):
return self.com(["TXPIN", str(pin)])
def set_baud_rate(self, baud):
return self.com(["BAUD", str(baud)])
def set_pwm_scale(self, scale):
return self.com(["SCALE", str(scale)])
def set_pace(self, pace):
return self.com(["PACE", str(pace)])
def set_hold(self, hold):
return self.com(["HOLD", str(baud)])
#-------------------------- closed loop constants ----------------------
def set_ki_limit(self, limit):
return self.com(["KIP", str(limit)])
def set_ki_decay(self, decay):
return self.com(["KIT", str(decay)])
def set_kimax(self, maxim):
return self.com(["KIMAX", str(maxim)])
def set_ki_constant(self, constant):
return self.com(["KI", str(constant)])
def set_kp_constant(self, constant):
return self.com(["KP", str(constant)])
def set_acc_rate(self, acc):
return self.com(["ACC", str(acc)])
def set_ramp_rate(self, rate):
return self.com(["RAMP", str(rate)])
def set_live_zone(self, limit):
return self.com(["LZ", str(limit)])
def set_dead_zone(self, limit):
return self.com(["DZ", str(limit)])
def set_ppr(self, ppr):
return self.com(["PPR", str(ppr)])
class Player(object):
"""JQ6500 mini MP3 module."""
EQ_NORMAL = 0
EQ_POP = 1
EQ_ROCK = 2
EQ_JAZZ = 3
EQ_CLASSIC = 4
EQ_BASS = 5
SRC_SDCARD = 1
SRC_BUILTIN = 4
LOOP_ALL = 0 # Plays all the tracks and repeats.
LOOP_FOLDER = 1 # Plays all the tracks in the same folder and repeats.
LOOP_ONE = 2 # Plays the same track and repeats.
LOOP_RAM = 3 # Unknown
LOOP_ONE_STOP = 4 # Plays the track and stops.
LOOP_NONE = 4
STATUS_STOPPED = 0
STATUS_PLAYING = 1
STATUS_PAUSED = 2
READ_DELAY = .1
def __init__(self, port=2, volume=20):
"""
Constructor for JQ6500.
Args:
port (int): UART port # (default: 2).
volume(int) : Initial volume (default: 20, range 0-30).
"""
self.uart = UART(port, 9600)
self.uart.read()
self.reset()
self.set_volume(volume)
def clean_up(self):
"""Clean up and release resources."""
self.reset()
if 'deinit' in dir(self.uart):
self.uart.deinit()
def play(self):
"""Play the current file."""
self.write_bytes([0x0D])
def play_pause(self):
"""Toggle play or pause for the current file."""
status = self.get_status()
if status == self.STATUS_PAUSED or status == self.STATUS_STOPPED:
self.play()
elif status == self.STATUS_PLAYING:
self.pause()
def restart(self):
"""Restart current playing or paused file from the beginning."""
old_volume = self.get_volume()
self.set_volume(0)
self.next()
self.pause()
self.set_volume(old_volume)
self.prev()
def pause(self):
"""Pause the current file. Use play() to resume."""
self.write_bytes([0x0E])
def next(self):
"""Play the next file."""
self.write_bytes([0x01])
def prev(self):
"""Play the previous file."""
self.write_bytes([0x02])
def next_folder(self):
"""Play the next folder."""
self.write_bytes([0x0F, 0x01])
def prev_folder(self):
"""Play the previous folder."""
self.write_bytes([0x0F, 0x00])
def play_by_index(self, file_index):
"""
Play file by FAT table index.
Args:
file_index (int): File FAT table index number.
Notes:
The index number has nothing to do with the filename.
To sort SD Card FAT table, search for a FAT sorting utility.
"""
self.write_bytes([0x03, (file_index >> 8) & 0xFF, file_index & 0xFF])
def play_by_number(self, folder_number, file_number):
"""
Play file by folder number and file number.
Args:
folder_number (int): Folder name number.
file_number (int): Filename number.
Notes:
Only applies to SD Card.
To use this function, folders must be named from 00 to 99,
and files must be named from 000.mp3 to 999.mp3.
"""
self.write_bytes([0x12, folder_number & 0xFF, file_number & 0xFF])
def volume_up(self):
"""Increase volume by 1 (Volume range 0-30)."""
self.write_bytes([0x04])
def volume_down(self):
"""Decrease volume by 1 (Volume range 0-30)."""
self.write_bytes([0x05])
def set_volume(self, level):
"""
Set volume to a specific level.
Args:
level (int): Volume level (Volume range 0-30).
"""
assert (0 <= level <= 30)
self.write_bytes([0x06, level])
def set_equalizer(self, mode):
"""
Set equalizer to 1 of 6 preset modes.
Args:
mode (int): (EQ_NORMAL, EQ_POP, EQ_ROCK, EQ_JAZZ,
EQ_CLASSIC, EQ_BASS).
"""
self.write_bytes([0x07, mode])
def set_looping(self, mode):
"""
Set looping mode.
Args:
mode (int): (LOOP_ALL , LOOP_FOLDER, LOOP_ONE, LOOP_RAM,
LOOP_ONE_STOP, LOOP_NONE).
"""
self.write_bytes([0x11, mode])
def set_source(self, source):
"""
Set source location of MP3 files (on-board flash or SD card).
Args:
source (int): (SRC_SDCARD, SRC_BUILTIN).
Notes:
SD card requires JQ6500-28P model.
"""
self.write_bytes([0x09, source])
def sleep(self):
"""
Put the device to sleep.
Notes:
Not recommended for use with SD cards.
"""
self.write_bytes([0x0A])
def reset(self):
"""
Soft reset of the device.
Notes:
Method is not reliable (especially with SD cards).
Power-cycling is preferable.
"""
self.write_bytes([0x0C])
sleep(.5)
def get_status(self):
"""
Get device status. (STATUS_PAUSED,STATUS_PLAYING, STATUS_STOPPED).
Notes:
Only returns playing or paused with built-in flash.
Method is unreliable with SD cardsself.
"""
self.write_bytes([0x42])
sleep(self.READ_DELAY)
status = self.uart.read()
sleep(self.READ_DELAY)
if status.isdigit():
return int(status)
else:
return -1
def get_volume(self):
"""Get current volume level (0-30)."""
self.write_bytes([0x43])
sleep(self.READ_DELAY)
level = self.read_bytes()
return level
def get_equalizer(self):
"""
Get current equalizer mode.
(EQ_NORMAL, EQ_POP, EQ_ROCK, EQ_JAZZ, EQ_CLASSIC, EQ_BASS).
"""
self.write_bytes([0x44])
sleep(self.READ_DELAY)
eq = self.read_bytes()
return eq
def get_looping(self):
"""
Get current looping mode.
(LOOP_ALL , LOOP_FOLDER, LOOP_ONE, LOOP_RAM, LOOP_ONE_STOP, LOOP_NONE).
"""
self.write_bytes([0x45])
sleep(self.READ_DELAY)
looping = self.read_bytes()
return looping
def get_file_count(self, source):
"""
Return the number of files on the specified media.
Args:
source (int): (SRC_SDCARD, SRC_BUILTIN).
"""
if source == self.SRC_SDCARD:
self.write_bytes([0x47])
else:
# SRC_BUILTIN
self.write_bytes([0x49])
sleep(self.READ_DELAY)
count = self.read_bytes()
return count
def get_folder_count(self, source):
"""
Return the number of folders on the specified media.
Args:
source (int): (SRC_SDCARD, SRC_BUILTIN).
Notes:
Only SD cards can have folders.
"""
if source == self.SRC_SDCARD:
self.write_bytes([0x53])
count = self.read_bytes()
return count
else:
return 0
def get_file_index(self, source):
"""
Get FAT file index of current file.
Args:
source (int): (SRC_SDCARD, SRC_BUILTIN).
Notes:
Refers to current playing or paused file. If stopped refers
to the next file to play.
"""
if source == self.SRC_SDCARD:
self.write_bytes([0x4B])
sleep(self.READ_DELAY)
count = self.read_bytes()
return count
else:
# SRC_BUILTIN
self.write_bytes([0x4D])
sleep(self.READ_DELAY)
count = self.read_bytes()
return count + 1
def get_position(self):
"""Get current position in seconds of current file."""
self.write_bytes([0x50])
sleep(self.READ_DELAY)
position = self.read_bytes()
return position
def get_length(self):
"""Get length in seconds of current file."""
self.write_bytes([0x51])
sleep(self.READ_DELAY)
length = self.read_bytes()
return length
def get_name(self):
"""
Get the filename of the current file on the SD card.
Notes:
SD card must be active source.
"""
self.write_bytes([0x52])
sleep(self.READ_DELAY)
return self.uart.read()
def get_version(self):
"""Get version number."""
self.write_bytes([0x46])
sleep(self.READ_DELAY)
version = self.read_bytes()
return version
def read_buffer(self):
"""Return UART buffer as bytes."""
return self.uart.read()
def read_bytes(self):
"""Return 4 bytes from UART port."""
b = self.uart.read(4)
print(b)
if len(b) > 0:
return int(b, 16)
else:
return -1
def write_bytes(self, b):
"""
Write byte(s) to the UART port.
Args:
b ([byte]): List of bytes to write to the UART port.
"""
message_length = len(b) + 1
data = [0x7E, message_length] + b + [0xEF]
# print (','.join('0x{:02X}'.format(x) for x in data))
self.uart.read()
self.uart.write(bytes(data))
distance_judg = distance
print(distance_judg, end='')
print('m')
#シリアル通信 距離によってシリアル通信で送る値を変える
if distance_judg < 0.9:
uart.write('1')
elif distance_judg < 1.5:
uart.write('2')
elif distance_judg <= 2:
uart.write('3')
#print(i.rect())
#img = img.resize(224,224)
#a = img.draw_circle(224,224,20,fill=True)
a = img.draw_rectangle(i.rect())
else:
uart.write('7')
time.sleep()
UART.deinit()
#b = class_ws2812.set_led(0,(0,0,0))
#b = class_ws2812.display()
a = kpu.deinit(task)
class ebyteE32:
''' class to interface an ESP32 via serial commands to the EBYTE E32 Series LoRa modules '''
# UART ports
PORT = {'U1': 1, 'U2': 2}
# UART parity strings
PARSTR = {'8N1': '00', '8O1': '01', '8E1': '10'}
PARINV = {v: k for k, v in PARSTR.items()}
# UART parity bits
PARBIT = {'N': None, 'E': 0, 'O': 1}
# UART baudrate
BAUDRATE = {
1200: '000',
2400: '001',
4800: '010',
9600: '011',
19200: '100',
38400: '101',
57600: '110',
115200: '111'
}
BAUDRINV = {v: k for k, v in BAUDRATE.items()}
# LoRa datarate
DATARATE = {
'0.3k': '000',
'1.2k': '001',
'2.4k': '010',
'4.8k': '011',
'9.6k': '100',
'19.2k': '101'
}
DATARINV = {v: k for k, v in DATARATE.items()}
# Commands
CMDS = {
'setConfigPwrDwnSave': 0xC0,
'getConfig': 0xC1,
'setConfigPwrDwnNoSave': 0xC2,
'getVersion': 0xC3,
'reset': 0xC4
}
# operation modes (set with M0 & M1)
OPERMODE = {
'normal': '00',
'wakeup': '10',
'powersave': '01',
'sleep': '11'
}
# model frequency ranges (MHz)
FREQ = {
170: [160, 170, 173],
400: [410, 470, 525],
433: [410, 433, 441],
868: [862, 868, 893],
915: [900, 915, 931]
}
# version info frequency
FREQV = {'0x32': 433, '0x38': 470, '0x45': 868, '0x44': 915, '0x46': 170}
# model maximum transmision power
# 20dBm = 100mW - 27dBm = 500 mW - 30dBm = 1000 mW (1 W)
MAXPOW = {'T20': 0, 'T27': 1, 'T30': 2}
# transmission mode
TRANSMODE = {0: 'transparent', 1: 'fixed'}
# IO drive mode
IOMODE = {
0: 'TXD AUX floating output, RXD floating input',
1: 'TXD AUX push-pull output, RXD pull-up input'
}
# wireless wakeup times from sleep mode
WUTIME = {
0b000: '250ms',
0b001: '500ms',
0b010: '750ms',
0b011: '1000ms',
0b100: '1250ms',
0b101: '1500ms',
0b110: '1750ms',
0b111: '2000ms'
}
# Forward Error Correction (FEC) mode
FEC = {0: 'off', 1: 'on'}
# transmission power T20/T27/T30 (dBm)
TXPOWER = {
0b00: ['20dBm', '27dBm', '30dBm'],
0b01: ['17dBm', '24dBm', '27dBm'],
0b10: ['14dBm', '21dBm', '24dBm'],
0b11: ['10dBm', '18dBm', '21dBm']
}
def __init__(self,
PinM0,
PinM1,
PinAUX,
Model='868T20D',
Port='U1',
Baudrate=9600,
Parity='8N1',
AirDataRate='2.4k',
Address=0x0000,
Channel=0x06,
debug=False):
''' constructor for ebyte E32 LoRa module '''
# configuration in dictionary
self.config = {}
self.config['model'] = Model # E32 model (default 868T20D)
self.config['port'] = Port # UART channel on the ESP (default U1)
self.config['baudrate'] = Baudrate # UART baudrate (default 9600)
self.config['parity'] = Parity # UART Parity (default 8N1)
self.config[
'datarate'] = AirDataRate # wireless baudrate (default 2.4k)
self.config['address'] = Address # target address (default 0x0000)
self.config['channel'] = Channel # target channel (0-31, default 0x06)
self.calcFrequency(
) # calculate frequency (min frequency + channel*1 MHz)
self.config[
'transmode'] = 0 # transmission mode (default 0 - tranparent)
self.config['iomode'] = 1 # IO mode (default 1 = not floating)
self.config[
'wutime'] = 0 # wakeup time from sleep mode (default 0 = 250ms)
self.config['fec'] = 1 # forward error correction (default 1 = on)
self.config[
'txpower'] = 0 # transmission power (default 0 = 20dBm/100mW)
#
self.PinM0 = PinM0 # M0 pin number
self.PinM1 = PinM1 # M1 pin number
self.PinAUX = PinAUX # AUX pin number
self.M0 = None # instance for M0 Pin (set operation mode)
self.M1 = None # instance for M1 Pin (set operation mode)
self.AUX = None # instance for AUX Pin (device status : 0=busy - 1=idle)
self.serdev = None # instance for UART
self.debug = debug
def start(self):
''' Start the ebyte E32 LoRa module '''
try:
# check parameters
if int(self.config['model'].split('T')[0]) not in ebyteE32.FREQ:
self.config['model'] = '868T20D'
if self.config['port'] not in ebyteE32.PORT:
self.config['port'] = 'U1'
if int(self.config['baudrate']) not in ebyteE32.BAUDRATE:
self.config['baudrate'] = 9600
if self.config['parity'] not in ebyteE32.PARSTR:
self.config['parity'] = '8N1'
if self.config['datarate'] not in ebyteE32.DATARATE:
self.config['datarate'] = '2.4k'
if self.config['channel'] > 31:
self.config['channel'] = 31
# make UART instance
self.serdev = UART(ebyteE32.PORT.get(self.config['port']))
# init UART
par = ebyteE32.PARBIT.get(str(self.config['parity'])[1])
self.serdev.init(baudrate=self.config['baudrate'],
bits=8,
parity=par,
stop=1)
if self.debug:
print(self.serdev)
# make operation mode & device status instances
self.M0 = Pin(self.PinM0, Pin.OUT)
self.M1 = Pin(self.PinM1, Pin.OUT)
self.AUX = Pin(self.PinAUX, Pin.IN, Pin.PULL_UP)
if self.debug:
print(self.M0, self.M1, self.AUX)
# set config to the ebyte E32 LoRa module
self.setConfig('setConfigPwrDwnSave')
return "OK"
except Exception as E:
if self.debug:
print("error on start UART", E)
return "NOK"
def sendMessage(self, to_address, to_channel, payload, useChecksum=False):
''' Send the payload to ebyte E32 LoRa modules in transparent or fixed mode. The payload is a data dictionary to
accomodate key value pairs commonly used to store sensor data and is converted to a JSON string before sending.
The payload can be appended with a 2's complement checksum to validate correct transmission.
- transparent mode : all modules with the same address and channel of the transmitter will receive the payload
- fixed mode : only the module with this address and channel will receive the payload;
if the address is 0xFFFF all modules with the same channel will receive the payload'''
try:
# type of transmission
if (to_address
== self.config['address']) and (to_channel
== self.config['channel']):
# transparent transmission mode
# all modules with the same address and channel will receive the payload
self.setTransmissionMode(0)
else:
# fixed transmission mode
# only the module with the target address and channel will receive the payload
self.setTransmissionMode(1)
# put into wakeup mode (includes preamble signals to wake up device in powersave or sleep mode)
self.setOperationMode('wakeup')
# check payload
if type(payload) != dict:
print('payload is not a dictionary')
return 'NOK'
# encode message
msg = []
if self.config[
'transmode'] == 1: # only for fixed transmission mode
msg.append(to_address // 256) # high address byte
msg.append(to_address % 256) # low address byte
msg.append(to_channel) # channel
js_payload = ujson.dumps(payload) # convert payload to JSON string
for i in range(len(js_payload)): # message
msg.append(ord(js_payload[i])) # ascii code of character
if useChecksum: # attach 2's complement checksum
msg.append(int(self.calcChecksum(js_payload), 16))
# debug
if self.debug:
print(msg)
# wait for idle module
self.waitForDeviceIdle()
# send the message
self.serdev.write(bytes(msg))
return "OK"
except Exception as E:
if self.debug:
print('Error on sendMessage: ', E)
return "NOK"
def recvMessage(self, from_address, from_channel, useChecksum=False):
''' Receive payload messages from ebyte E32 LoRa modules in transparent or fixed mode. The payload is a JSON string
of a data dictionary to accomodate key value pairs commonly used to store sensor data. If checksumming is used, the
checksum of the received payload including the checksum byte should result in 0 for a correct transmission.
- transparent mode : payload will be received if the module has the same address and channel of the transmitter
- fixed mode : only payloads from transmitters with this address and channel will be received;
if the address is 0xFFFF, payloads from all transmitters with this channel will be received'''
try:
# type of transmission
if (from_address
== self.config['address']) and (from_channel
== self.config['channel']):
# transparent transmission mode
# all modules with the same address and channel will receive the message
self.setTransmissionMode(0)
else:
# fixed transmission mode
# only the module with the target address and channel will receive the message
self.setTransmissionMode(1)
# put into normal mode
self.setOperationMode('normal')
# receive message
js_payload = self.serdev.read()
# debug
if self.debug:
print(js_payload)
# did we receive anything ?
if js_payload == None:
# nothing
return {'msg': None}
else:
# decode message
msg = ''
for i in range(len(js_payload)):
msg += chr(js_payload[i])
# checksum check
if useChecksum:
cs = int(self.calcChecksum(msg), 16)
if cs != 0:
# corrupt
return {'msg': 'corrupt message, checksum ' + str(cs)}
else:
# message ok, remove checksum
msg = msg[:-1]
# JSON to dictionary
message = ujson.loads(msg)
return message
except Exception as E:
if self.debug:
print('Error on recvMessage: ', E)
return "NOK"
def calcChecksum(self, payload):
''' Calculates checksum for sending/receiving payloads. Sums the ASCII character values mod256 and returns
the lower byte of the two's complement of that value in hex notation. '''
return '%2X' % (-(sum(ord(c) for c in payload) % 256) & 0xFF)
def reset(self):
''' Reset the ebyte E32 Lora module '''
try:
# send the command
res = self.sendCommand('reset')
# discard result
return "OK"
except Exception as E:
if self.debug:
print("error on reset", E)
return "NOK"
def stop(self):
''' Stop the ebyte E32 LoRa module '''
try:
if self.serdev != None:
self.serdev.deinit()
del self.serdev
return "OK"
except Exception as E:
if self.debug:
print("error on stop UART", E)
return "NOK"
def sendCommand(self, command):
''' Send a command to the ebyte E32 LoRa module.
The module has to be in sleep mode '''
try:
# put into sleep mode
self.setOperationMode('sleep')
# send command
HexCmd = ebyteE32.CMDS.get(command)
if HexCmd in [0xC0, 0xC2]: # set config to device
header = HexCmd
HexCmd = self.encodeConfig()
HexCmd[0] = header
else: # get config, get version, reset
HexCmd = [HexCmd] * 3
if self.debug:
print(HexCmd)
self.serdev.write(bytes(HexCmd))
# wait for result
utime.sleep_ms(50)
# read result
if command == 'reset':
result = ''
else:
result = self.serdev.read()
# wait for result
utime.sleep_ms(50)
# debug
if self.debug:
print(result)
return result
except Exception as E:
if self.debug:
print('Error on sendCommand: ', E)
return "NOK"
def getVersion(self):
''' Get the version info from the ebyte E32 LoRa module '''
try:
# send the command
result = self.sendCommand('getVersion')
# check result
if len(result) != 4:
return "NOK"
# decode result
freq = ebyteE32.FREQV.get(hex(result[1]), 'unknown')
# show version
if result[0] == 0xc3:
print('================= E32 MODULE ===================')
print('model \t%dMhz' % (freq))
print('version \t%d' % (result[2]))
print('features \t%d' % (result[3]))
print('================================================')
return "OK"
except Exception as E:
if self.debug:
print('Error on getVersion: ', E)
return "NOK"
def getConfig(self):
''' Get config parameters from the ebyte E32 LoRa module '''
try:
# send the command
result = self.sendCommand('getConfig')
# check result
if len(result) != 6:
return "NOK"
# decode result
self.decodeConfig(result)
# show config
self.showConfig()
return "OK"
except Exception as E:
if self.debug:
print('Error on getConfig: ', E)
return "NOK"
def decodeConfig(self, message):
''' decode the config message from the ebyte E32 LoRa module to update the config dictionary '''
# message byte 0 = header
header = int(message[0])
# message byte 1 & 2 = address
self.config['address'] = int(message[1]) * 256 + int(message[2])
# message byte 3 = speed (parity, baudrate, datarate)
bits = '{0:08b}'.format(message[3])
self.config['parity'] = ebyteE32.PARINV.get(bits[0:2])
self.config['baudrate'] = ebyteE32.BAUDRINV.get(bits[2:5])
self.config['datarate'] = ebyteE32.DATARINV.get(bits[5:])
# message byte 4 = channel
self.config['channel'] = int(message[4])
# message byte 5 = option (transmode, iomode, wutime, fec, txpower)
bits = '{0:08b}'.format(message[5])
self.config['transmode'] = int(bits[0:1])
self.config['iomode'] = int(bits[1:2])
self.config['wutime'] = int(bits[2:5])
self.config['fec'] = int(bits[5:6])
self.config['txpower'] = int(bits[6:])
def encodeConfig(self):
''' encode the config dictionary to create the config message of the ebyte E32 LoRa module '''
# Initialize config message
message = []
# message byte 0 = header
message.append(0xC0)
# message byte 1 = high address
message.append(self.config['address'] // 256)
# message byte 2 = low address
message.append(self.config['address'] % 256)
# message byte 3 = speed (parity, baudrate, datarate)
bits = '0b'
bits += ebyteE32.PARSTR.get(self.config['parity'])
bits += ebyteE32.BAUDRATE.get(self.config['baudrate'])
bits += ebyteE32.DATARATE.get(self.config['datarate'])
message.append(int(bits))
# message byte 4 = channel
message.append(self.config['channel'])
# message byte 5 = option (transmode, iomode, wutime, fec, txpower)
bits = '0b'
bits += str(self.config['transmode'])
bits += str(self.config['iomode'])
bits += '{0:03b}'.format(self.config['wutime'])
bits += str(self.config['fec'])
bits += '{0:02b}'.format(self.config['txpower'])
message.append(int(bits))
return message
def showConfig(self):
''' Show the config parameters of the ebyte E32 LoRa module on the shell '''
print('=================== CONFIG =====================')
print('model \tE32-%s' % (self.config['model']))
print('frequency \t%dMhz' % (self.config['frequency']))
print('address \t0x%04x' % (self.config['address']))
print('channel \t0x%02x' % (self.config['channel']))
print('datarate \t%sbps' % (self.config['datarate']))
print('port \t%s' % (self.config['port']))
print('baudrate \t%dbps' % (self.config['baudrate']))
print('parity \t%s' % (self.config['parity']))
print('transmission\t%s' %
(ebyteE32.TRANSMODE.get(self.config['transmode'])))
print('IO mode \t%s' %
(ebyteE32.IOMODE.get(self.config['iomode'])))
print('wakeup time \t%s' %
(ebyteE32.WUTIME.get(self.config['wutime'])))
print('FEC \t%s' % (ebyteE32.FEC.get(self.config['fec'])))
maxp = ebyteE32.MAXPOW.get(self.config['model'][3:6], 0)
print('TX power \t%s' %
(ebyteE32.TXPOWER.get(self.config['txpower'])[maxp]))
print('================================================')
def waitForDeviceIdle(self):
''' Wait for the E32 LoRa module to become idle (AUX pin high) '''
count = 0
# loop for device busy
while not self.AUX.value():
# increment count
count += 1
# maximum wait time 100 ms
if count == 10:
break
# sleep for 10 ms
utime.sleep_ms(10)
def saveConfigToJson(self):
''' Save config dictionary to JSON file '''
with open('E32config.json', 'w') as outfile:
ujson.dump(self.config, outfile)
def loadConfigFromJson(self):
''' Load config dictionary from JSON file '''
with open('E32config.json', 'r') as infile:
result = ujson.load(infile)
print(self.config)
def calcFrequency(self):
''' Calculate the frequency (= minimum frequency + channel * 1MHz)'''
# get minimum and maximum frequency
freqkey = int(self.config['model'].split('T')[0])
minfreq = ebyteE32.FREQ.get(freqkey)[0]
maxfreq = ebyteE32.FREQ.get(freqkey)[2]
# calculate frequency
freq = minfreq + self.config['channel']
if freq > maxfreq:
self.config['frequency'] = maxfreq
self.config['channel'] = hex(maxfreq - minfreq)
else:
self.config['frequency'] = freq
def setTransmissionMode(self, transmode):
''' Set the transmission mode of the E32 LoRa module '''
if transmode != self.config['transmode']:
self.config['transmode'] = transmode
self.setConfig('setConfigPwrDwnSave')
def setConfig(self, save_cmd):
''' Set config parameters for the ebyte E32 LoRa module '''
try:
# send the command
result = self.sendCommand(save_cmd)
# check result
if len(result) != 6:
return "NOK"
# debug
if self.debug:
# decode result
self.decodeConfig(result)
# show config
self.showConfig()
# save config to json file
self.saveConfigToJson()
return "OK"
except Exception as E:
if self.debug:
print('Error on setConfig: ', E)
return "NOK"
def setOperationMode(self, mode):
''' Set operation mode of the E32 LoRa module '''
# get operation mode settings (default normal)
bits = ebyteE32.OPERMODE.get(mode, '00')
# set operation mode
self.M0.value(int(bits[0]))
self.M1.value(int(bits[1]))
# wait a moment
utime.sleep_ms(50)
uart0 = UART(0, 1000000)
uart1 = UART(1, 1000000)
# next ones must raise
try:
UART(0, 9600, parity=None, pins=('GP12', 'GP13', 'GP7'))
except Exception:
print('Exception')
try:
UART(0, 9600, parity=UART.ODD, pins=('GP12', 'GP7'))
except Exception:
print('Exception')
uart0 = UART(0, 1000000)
uart0.deinit()
try:
uart0.any()
except Exception:
print('Exception')
try:
uart0.read()
except Exception:
print('Exception')
try:
uart0.write('abc')
except Exception:
print('Exception')
class GPS():
def __init__(self, mac=1, _baudrate=9600, _tx=22, _rx=21, _txbuf=1024, _rxbuf=1024):
# create a new UART controller
self.uart = UART(mac, _baudrate, tx=_tx, rx=_rx, txbuf=_txbuf, rxbuf=_rxbuf)
# Used for finding new packets
self.oldRXLength = 0
self.currentRXLength = 0
self.speed = 0
#make a dictionary for RMC data
self.RMCdata = {}
self.RMCfound = False
def __del__(self):
self.uart.deinit()
def format_RMCdata(self, data):
# Time
self.RMCdata['time'] = data[1][0:2] + ':' + data[1][2:4] + ':' + data[1][4:6]
# Latitude
hhmm_mmmm = data[3]
self.RMCdata['latitude'] = float(hhmm_mmmm[0:2])
fraction = '.' + hhmm_mmmm[2:4] + hhmm_mmmm[5:9]
self.RMCdata['latitude'] = self.RMCdata['latitude'] + float(fraction)*100/60
# N = + S = -
if(data[4] == 'S'):
self.RMCdata['latitude'] = self.RMCdata['latitude'] * -1
self.RMCdata['latitude'] = str(self.RMCdata['latitude'])
#Longitude
hhmm_mmmm = data[5][1:]
self.RMCdata['longitude'] = float(hhmm_mmmm[0:2])
fraction = '.' + hhmm_mmmm[2:4] + hhmm_mmmm[5:9]
self.RMCdata['longitude'] = self.RMCdata['longitude'] + float(fraction)*100/60
# E = + W = -
if(data[6] == 'W'):
self.RMCdata['longitude'] = self.RMCdata['longitude'] * -1
self.RMCdata['longitude'] = str(self.RMCdata['longitude'])
# TODO: Let's revisit this...
# #Speed and Course
# self.RMCdata['speed'] = float(data[7])
# self.RMCdata['course'] = float(data[8])
self.speed = float(data[7])
#Date
self.RMCdata['date'] = str(2000 + int(data[9][4:6])) + '-' + data[9][2:4] + '-' + data[9][0:2]
def parse_RMCdata(self, rawData):
# search each line for RMC data set
for d in rawData:
if (d[3:6] == 'RMC') and (d[-4:] == '\\r\\n'):
self.RMCfound = True
break #we found RMC data
if self.RMCfound:
self.RMCfound = False
data = d.split(',')
if not (data[2] == 'V'):
self.format_RMCdata(data)
else:
self.RMCdata = {}
def get_RMCdata(self, defaultLogger: Logger):
self.oldRXLength = self.currentRXLength
self.currentRXLength = self.uart.any()
if(self.currentRXLength == 0):
self.RMCdata = {}
return [self.RMCdata, None]
else:
data = self.uart.read(self.currentRXLength)
rawData = list(d.replace('\r\n', '\\r\\n') for d in str(data).replace('\\r\\n', '\r\n').splitlines(True))
try:
self.parse_RMCdata(rawData)
except Exception as e:
self.RMCdata = {}
#TODO: remove print
print(e)
defaultLogger.warning(str(e))
return [self.RMCdata, self.speed]
class DeepSleep:
WPUA_ADDR = const(0x09)
OPTION_REG_ADDR = const(0x0E)
IOCAP_ADDR = const(0x1A)
IOCAN_ADDR = const(0x1B)
WAKE_STATUS_ADDR = const(0x40)
MIN_BAT_ADDR = const(0x41)
SLEEP_TIME_ADDR = const(0x42)
CTRL_0_ADDR = const(0x45)
EXP_RTC_PERIOD = const(7000)
def __init__(self):
self.uart = UART(1, baudrate=10000, pins=(COMM_PIN, ))
self.clk_cal_factor = 1
self.uart.read()
# enable the weak pull-ups control
self.clearbits(OPTION_REG_ADDR, 1 << 7)
def _send(self, data):
self.uart.write(bytes(data))
def _start(self):
self.uart.sendbreak(20)
self._send([0x55])
def _magic(self, address, and_val, or_val, xor_val, expected=None):
self._start()
self._send([address, and_val & 0xFF, or_val & 0xFF, xor_val & 0xFF])
if expected is None:
return self.uart.read()
else:
if expected > 0:
return self.uart.read(expected)
def _add_to_pin_mask(self, mask, pin):
if pin == 'P10' or pin == 'G17':
mask |= 0x01
elif pin == 'P17' or pin == 'G31':
mask |= 0x02
elif pin == 'P18' or pin == 'G30':
mask |= 0x08
else:
raise ValueError('Invalid Pin specified: {}'.format(pin))
return mask
def _create_pin_mask(self, pins):
mask = 0
if type(pins) is str:
mask = self._add_to_pin_mask(mask, pins)
else:
for pin in pins:
mask = self._add_to_pin_mask(mask, pin)
return mask & PIN_MASK
def poke(self, address, value):
self._magic(address, 0, value, 0)
def peek(self, address):
return self._magic(address, 0xFF, 0, 0)[6]
def setbits(self, address, mask):
self._magic(address, 0xFF, mask, 0)
def clearbits(self, address, mask):
self._magic(address, ~mask, 0, 0)
def togglebits(self, address, mask):
self._magic(address, 0xFF, 0, mask)
def calibrate(self):
""" The microcontroller will send the value of CTRL_0 after setting the bit
and then will send the following pattern through the data line:
val | 1 | 0 | 1*| 0 | 1*| 0 | 1
ms | 1 | 1 | 1 | 1 | 8 | 1 | -
The idea is to measure the real life duration of periods marked with *
and substract them. That will remove any errors common to both measurements
The result is 7 ms as generated by the PIC LF clock.
It can be used to scale any future sleep value. """
# setbits, but limit the number of received bytes to avoid confusion with pattern
self._magic(CTRL_0_ADDR, 0xFF, 1 << 2, 0, 0)
self.uart.deinit()
self._pulses = pycom.pulses_get(COMM_PIN, 50)
self.uart = UART(1, baudrate=10000, pins=(COMM_PIN, ))
try:
self.clk_cal_factor = (self._pulses[4][1] - self._pulses[1][1]) / EXP_RTC_PERIOD
except:
pass
if self.clk_cal_factor > 1.25 or self.clk_cal_factor < 0.75:
self.clk_cal_factor = 1
def enable_auto_poweroff(self):
self.setbits(CTRL_0_ADDR, 1 << 1)
def enable_pullups(self, pins):
mask = self._create_pin_mask(pins)
self.setbits(WPUA_ADDR, mask)
def disable_pullups(self, pins):
mask = self._create_pin_mask(pins)
self.clearbits(WPUA_ADDR, mask)
def enable_wake_on_raise(self, pins):
mask = self._create_pin_mask(pins)
self.setbits(IOCAP_ADDR, mask)
def disable_wake_on_raise(self, pins):
mask = self._create_pin_mask(pins)
self.clearbits(IOCAP_ADDR, mask)
def enable_wake_on_fall(self, pins):
mask = self._create_pin_mask(pins)
self.setbits(IOCAN_ADDR, mask)
def disable_wake_on_fall(self, pins):
mask = self._create_pin_mask(pins)
self.clearbits(IOCAN_ADDR, mask)
def get_wake_status(self):
# bits as they are returned from PIC:
# 0: PIN 0 value after awake
# 1: PIN 1 value after awake
# 2: PIN 2 value after awake
# 3: PIN 3 value after awake
# 4: TIMEOUT
# 5: POWER ON
wake_r = self.peek(WAKE_STATUS_ADDR)
return {'wake': wake_r & (TIMER_WAKE | POWER_ON_WAKE),
'P10': wake_r & 0x01, 'P17': (wake_r & 0x02) >> 1,
'P18': (wake_r & 0x08) >> 3}
def set_min_voltage_limit(self, value):
# voltage value passed in volts (e.g. 3.6) and round it to the nearest integer
value = int(((256 * 2.048) + (value / 2)) / value)
self.poke(MIN_BAT_ADDR, value)
def go_to_sleep(self, seconds):
gc.collect()
while True:
try:
self.calibrate()
except Exception:
pass
# the 1.024 factor is because the PIC LF operates at 31 KHz
# WDT has a frequency divider to generate 1 ms
# and then there is a binary prescaler, e.g., 1, 2, 4 ... 512, 1024 ms
# hence the need for the constant
# round to the nearest integer
seconds = int((seconds / (1.024 * self.clk_cal_factor)) + 0.5)
self.poke(SLEEP_TIME_ADDR, (seconds >> 16) & 0xFF)
self.poke(SLEEP_TIME_ADDR + 1, (seconds >> 8) & 0xFF)
self.poke(SLEEP_TIME_ADDR + 2, seconds & 0xFF)
self.setbits(CTRL_0_ADDR, 1 << 0)
def hw_reset(self):
self.setbits(CTRL_0_ADDR, 1 << 4)
a = kpu.init_yolo2(task, 0.5, 0.3, 5, anchor)
while (True):
clock.tick()
img = sensor.snapshot()
code = kpu.run_yolo2(task, img)
lcd.display(img)
if code:
for i in code:
print(i)
a = img.draw_rectangle(i.rect())
b = lcd.display(img)
img_buf = img.compress(quality=70)
img_size1 = (img.size() & 0xFF0000) >> 16
img_size2 = (img.size() & 0x00FF00) >> 8
img_size3 = (img.size() & 0x0000FF) >> 0
data_packet = bytearray([
0xFF, 0xD8, 0xEA, 0x01, img_size1, img_size2, img_size3, 0x00,
0x00, 0x00
])
uart_Port.write(data_packet)
uart_Port.write(img_buf)
time.sleep(1.0)
a = kpu.deinit(task)
# Send UART End
uart_Port.deinit()
del uart_Port
print("finish")
class uModBusSerial:
def __init__(self,
uart_id,
baudrate=9600,
data_bits=8,
stop_bits=1,
parity=None,
pins=None,
ctrl_pin=None):
pinsLen = len(pins)
if pins == None or pinsLen < 2 or pinsLen > 4 or pinsLen == 3:
raise ValueError(
'pins should contain pin names/numbers for: tx, rx, [rts, cts]'
)
tx = pins[0]
rx = pins[1]
if pinsLen == 4:
rts = pins[2]
cts = pins[3]
self._uart = UART(uart_id, baudrate=baudrate, bits=data_bits, parity=parity, \
stop=stop_bits, timeout_char=10, tx=tx, rx=rx, rts=rts, cts=cts)
else:
self._uart = UART(uart_id, baudrate=baudrate, bits=data_bits, parity=parity, \
stop=stop_bits, timeout_char=10, tx=tx, rx=rx)
#self._uart = UART(uart_id, baudrate=baudrate, bits=data_bits, parity=parity, \
# stop=stop_bits, timeout_chars=10, pins=pins)
if ctrl_pin is not None:
self._ctrlPin = Pin(ctrl_pin, mode=Pin.OUT)
else:
self._ctrlPin = None
self.char_time_ms = (1000 * (data_bits + stop_bits + 2)) // baudrate
def _calculate_crc16(self, data):
crc = 0xFFFF
for char in data:
crc = (crc >> 8) ^ Const.CRC16_TABLE[((crc) ^ char) & 0xFF]
return struct.pack('<H', crc)
def _bytes_to_bool(self, byte_list):
bool_list = []
for index, byte in enumerate(byte_list):
bool_list.extend([bool(byte & (1 << n)) for n in range(8)])
return bool_list
def _to_short(self, byte_array, signed=True):
response_quantity = int(len(byte_array) / 2)
fmt = '>' + (('h' if signed else 'H') * response_quantity)
return struct.unpack(fmt, byte_array)
def _exit_read(self, response):
if response[1] >= Const.ERROR_BIAS:
if len(response) < Const.ERROR_RESP_LEN:
return False
elif (Const.READ_COILS <= response[1] <= Const.READ_INPUT_REGISTER):
expected_len = Const.RESPONSE_HDR_LENGTH + 1 + response[
2] + Const.CRC_LENGTH
if len(response) < expected_len:
return False
elif len(response) < Const.FIXED_RESP_LEN:
return False
return True
def _uart_read(self):
response = bytearray()
for x in range(1, 40):
if self._uart.any():
response.extend(self._uart.read())
#response.extend(self._uart.readall())
# variable length function codes may require multiple reads
if self._exit_read(response):
break
time.sleep(0.05)
return response
def _send_receive(self, modbus_pdu, slave_addr, count):
serial_pdu = bytearray()
serial_pdu.append(slave_addr)
serial_pdu.extend(modbus_pdu)
crc = self._calculate_crc16(serial_pdu)
serial_pdu.extend(crc)
# flush the Rx FIFO
self._uart.read()
if self._ctrlPin:
self._ctrlPin(1)
self._uart.write(serial_pdu)
if self._ctrlPin:
while not self._uart.wait_tx_done(2):
machine.idle()
time.sleep_ms(1 + self.char_time_ms)
self._ctrlPin(0)
return self._validate_resp_hdr(self._uart_read(), slave_addr,
modbus_pdu[0], count)
def _validate_resp_hdr(self, response, slave_addr, function_code, count):
if len(response) == 0:
raise OSError('no data received from slave')
resp_crc = response[-Const.CRC_LENGTH:]
expected_crc = self._calculate_crc16(response[0:len(response) -
Const.CRC_LENGTH])
if (resp_crc[0] != expected_crc[0]) or (resp_crc[1] !=
expected_crc[1]):
raise OSError('invalid response CRC')
if (response[0] != slave_addr):
raise ValueError('wrong slave address')
if (response[1] == (function_code + Const.ERROR_BIAS)):
raise ValueError('slave returned exception code: {:d}'.format(
response[2]))
hdr_length = (Const.RESPONSE_HDR_LENGTH +
1) if count else Const.RESPONSE_HDR_LENGTH
return response[hdr_length:len(response) - Const.CRC_LENGTH]
def read_coils(self, slave_addr, starting_addr, coil_qty):
modbus_pdu = functions.read_coils(starting_addr, coil_qty)
resp_data = self._send_receive(modbus_pdu, slave_addr, True)
status_pdu = self._bytes_to_bool(resp_data)
return status_pdu
def read_discrete_inputs(self, slave_addr, starting_addr, input_qty):
modbus_pdu = functions.read_discrete_inputs(starting_addr, input_qty)
resp_data = self._send_receive(modbus_pdu, slave_addr, True)
status_pdu = self._bytes_to_bool(resp_data)
return status_pdu
def read_holding_registers(self,
slave_addr,
starting_addr,
register_qty,
signed=True):
modbus_pdu = functions.read_holding_registers(starting_addr,
register_qty)
resp_data = self._send_receive(modbus_pdu, slave_addr, True)
register_value = self._to_short(resp_data, signed)
return register_value
def read_input_registers(self,
slave_addr,
starting_address,
register_quantity,
signed=True):
modbus_pdu = functions.read_input_registers(starting_address,
register_quantity)
resp_data = self._send_receive(modbus_pdu, slave_addr, True)
register_value = self._to_short(resp_data, signed)
return register_value
def write_single_coil(self, slave_addr, output_address, output_value):
modbus_pdu = functions.write_single_coil(output_address, output_value)
resp_data = self._send_receive(modbus_pdu, slave_addr, False)
operation_status = functions.validate_resp_data(
resp_data,
Const.WRITE_SINGLE_COIL,
output_address,
value=output_value,
signed=False)
return operation_status
def write_single_register(self,
slave_addr,
register_address,
register_value,
signed=True):
modbus_pdu = functions.write_single_register(register_address,
register_value, signed)
resp_data = self._send_receive(modbus_pdu, slave_addr, False)
operation_status = functions.validate_resp_data(
resp_data,
Const.WRITE_SINGLE_REGISTER,
register_address,
value=register_value,
signed=signed)
return operation_status
def write_multiple_coils(self, slave_addr, starting_address,
output_values):
modbus_pdu = functions.write_multiple_coils(starting_address,
output_values)
resp_data = self._send_receive(modbus_pdu, slave_addr, False)
operation_status = functions.validate_resp_data(
resp_data,
Const.WRITE_MULTIPLE_COILS,
starting_address,
quantity=len(output_values))
return operation_status
def write_multiple_registers(self,
slave_addr,
starting_address,
register_values,
signed=True):
modbus_pdu = functions.write_multiple_registers(
starting_address, register_values, signed)
resp_data = self._send_receive(modbus_pdu, slave_addr, False)
operation_status = functions.validate_resp_data(
resp_data,
Const.WRITE_MULTIPLE_REGISTERS,
starting_address,
quantity=len(register_values))
return operation_status
def close(self):
if self._uart == None:
return
try:
self._uart.deinit()
except Exception:
pass
class SpikePrimeDevice(object):
def __init__(self, tx_pin, rx_pin, timer=Timer.TIMER0, timer_channel=Timer.CHANNEL0,
tx_gpio=GPIO.GPIO1, tx_fpioa_gpio=fm.fpioa.GPIO1, uart_num=UART.UART2):
self.connected = False
self.uart = None
self.tx_pin_num = tx_pin
self.rx_pin_num = rx_pin
self.data = 0
self.current_mode = 0
self.textBuffer = bytearray(b' ')
self.timer_num = timer
self.timer_channel_num = timer_channel
self.timer = None
self.tx_gpio = tx_gpio
self.tx_fpioa_gpio = tx_fpioa_gpio
self.uart_num = uart_num
if uart_num == UART.UART2:
self.uart_tx_fpioa_num = fm.fpioa.UART2_TX
self.uart_rx_fpioa_num = fm.fpioa.UART2_RX
elif uart_num == UART.UART1:
self.uart_tx_fpioa_num = fm.fpioa.UART1_TX
self.uart_rx_fpioa_num = fm.fpioa.UART1_RX
def initialize(self):
assert not self.connected
print("connecting...")
fm.register(self.tx_pin_num, self.tx_fpioa_gpio, force=True)
uart_tx = GPIO(self.tx_gpio, GPIO.OUT)
uart_tx.value(0)
time.sleep_ms(500)
uart_tx.value(1)
fm.register(self.tx_pin_num, self.uart_tx_fpioa_num, force=True)
fm.register(self.rx_pin_num, self.uart_rx_fpioa_num, force=True)
self.uart = UART(self.uart_num, 2400, bits=8, parity=None, stop=1, timeout=10000, read_buf_len=4096)
self.uart.write(b'\x00')
self.uart.write(b'\x40\x3e\x81')
self.uart.write(b'\x49\x07\x07\xb6')
self.uart.write(b'\x52\x00\xc2\x01\x00\x6e')
self.uart.write(b'\x5f\x00\x00\x00\x02\x00\x00\x00\x02\xa0')
self.uart.write(b'\xa7\x00\x66\x6c\x6f\x61\x74\x5f\x61\x72\x72\x61\x79\x00\x00\x00\x00\x00\x0e')
self.uart.write(b'\x9f\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xeb')
self.uart.write(b'\x9f\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xe8')
self.uart.write(b'\x9f\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xe9')
self.uart.write(b'\x87\x04\x00\x7c')
self.uart.write(b'\x8f\x05\x10\x00\x65')
self.uart.write(b'\x97\x80\x04\x03\x02\x01\xec')
time.sleep_ms(5)
self.uart.write(b'\xa6\x00\x69\x6e\x74\x33\x32\x5f\x61\x72\x72\x61\x79\x00\x00\x00\x00\x00\x0d')
self.uart.write(b'\x9e\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xea')
self.uart.write(b'\x9e\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xe9')
self.uart.write(b'\x9e\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xe8')
self.uart.write(b'\x86\x04\x00\x7d')
self.uart.write(b'\x8e\x05\x10\x00\x64')
self.uart.write(b'\x96\x80\x04\x02\x03\x00\xec')
time.sleep_ms(5)
self.uart.write(b'\xa5\x00\x69\x6e\x74\x31\x36\x5f\x61\x72\x72\x61\x79\x00\x00\x00\x00\x00\x08')
self.uart.write(b'\x9d\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xe9')
self.uart.write(b'\x9d\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xea')
self.uart.write(b'\x9d\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xeb')
self.uart.write(b'\x85\x04\x00\x7e')
self.uart.write(b'\x8d\x05\x10\x00\x67')
self.uart.write(b'\x95\x80\x04\x01\x03\x00\xec')
time.sleep_ms(5)
self.uart.write(b'\xa4\x00\x69\x6e\x74\x38\x5f\x61\x72\x72\x61\x79\x00\x00\x00\x00\x00\x00\x36')
self.uart.write(b'\x9c\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xe8')
self.uart.write(b'\x9c\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xeb')
self.uart.write(b'\x9c\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xea')
self.uart.write(b'\x84\x04\x00\x7f')
self.uart.write(b'\x8c\x05\x10\x00\x66')
self.uart.write(b'\x94\x80\x04\x00\x03\x00\xec')
time.sleep_ms(5)
self.uart.write(b'\x9b\x00\x66\x6c\x6f\x61\x74\x00\x00\x00\x14')
self.uart.write(b'\x9b\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xef')
self.uart.write(b'\x9b\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xec')
self.uart.write(b'\x9b\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xed')
self.uart.write(b'\x83\x04\x00\x78')
self.uart.write(b'\x8b\x05\x10\x00\x61')
self.uart.write(b'\x93\x80\x01\x03\x02\x01\xed')
time.sleep_ms(5)
self.uart.write(b'\x9a\x00\x69\x6e\x74\x33\x32\x00\x00\x00\x17')
self.uart.write(b'\x9a\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xee')
self.uart.write(b'\x9a\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xed')
self.uart.write(b'\x9a\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xec')
self.uart.write(b'\x82\x04\x00\x79')
self.uart.write(b'\x8a\x05\x10\x00\x60')
self.uart.write(b'\x92\x80\x01\x02\x03\x00\xed')
time.sleep_ms(5)
self.uart.write(b'\x99\x00\x69\x6e\x74\x31\x36\x00\x00\x00\x12')
self.uart.write(b'\x99\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xed')
self.uart.write(b'\x99\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xee')
self.uart.write(b'\x99\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xef')
self.uart.write(b'\x81\x04\x00\x7a')
self.uart.write(b'\x89\x05\x10\x00\x63')
self.uart.write(b'\x91\x80\x01\x01\x03\x00\xed')
time.sleep_ms(5)
self.uart.write(b'\x90\x00\x69\x6e\x74\x38\x24')
self.uart.write(b'\x98\x01\x00\x00\x00\x00\x00\x00\xc8\x42\xec')
self.uart.write(b'\x98\x02\x00\x00\x00\x00\x00\x00\xc8\x42\xef')
self.uart.write(b'\x98\x03\x00\x00\x00\x00\x00\x00\xc8\x42\xee')
self.uart.write(b'\x80\x04\x00\x7b')
self.uart.write(b'\x88\x05\x10\x00\x62')
self.uart.write(b'\x90\x80\x01\x00\x03\x00\xed')
time.sleep_ms(5)
self.uart.write(b'\x04')
time.sleep_ms(5)
print("waiting for ACK...")
self.connected = self._wait_for_value(b'\x04')
if self.connected:
print("connected")
self.uart.deinit()
fm.register(self.tx_pin_num, self.tx_fpioa_gpio, force=True)
uart_tx = GPIO(self.tx_gpio, GPIO.OUT)
uart_tx.value(0)
time.sleep_ms(10)
fm.register(self.tx_pin_num, self.uart_tx_fpioa_num, force=True)
fm.register(self.rx_pin_num, self.uart_rx_fpioa_num, force=True)
self.uart = UART(self.uart_num, 115200, bits=8, parity=None, stop=1, timeout=10000, read_buf_len=4096)
self.set_data(0)
self.timer = Timer(self.timer_num, self.timer_channel_num,
mode=Timer.MODE_PERIODIC, period=200, callback=self._handle_message_callback)
self.timer.start()
else:
print("not connected")
return self.connected
def _wait_for_value(self, expected_value, timeout=2):
starttime = time.time()
currenttime = starttime
status = False
#count = 0
while (currenttime - starttime) < timeout:
time.sleep_ms(5)
#print(count)
#count += 1
currenttime = time.time()
if self.uart.any() > 0:
data = self.uart.readchar()
#print(data)
if data == ord(expected_value):
status = True
break
return status
def set_data(self, data):
self.data = data
def _get_checksum(self, values):
checksum = 0xFF
for x in values:
checksum ^= x
return checksum
def _send_value(self, data):
value = data & 0xFF
payload = bytes([0xC0, value, self._get_checksum([0xC0, value])])
size = self.uart.write(payload)
return size
def _handle_message_callback(self, timer):
if not self.connected:
return
while self.uart.any() > 0:
x = self.uart.readchar()
if x == 0:
pass
elif x == 0x02:
pass
elif x == 0x43:
mode = self.uart.readchar()
checksum = self.uart.readchar()
if checksum == self._get_checksum([x, mode]):
self.current_mode = mode
elif x == 0x46:
zero = self.uart.readchar()
b9 = self.uart.readchar()
if zero == 0 and b9 == 0xb9:
size_mode = self.uart.readchar()
size = 2 ** ((size_mode & 0b111000) >> 3)
mode = size_mode & 0b111
checksum = self._get_checksum([x, zero, b9, size_mode])
for i in range(len(self.textBuffer)):
self.textBuffer[i] = ord(b' ')
for i in range(size):
self.textBuffer[i] = self.uart.readchar()
checksum ^= self.textBuffer[i]
expected_checksum = self.uart.readchar()
if expected_checksum == checksum:
print(self.textBuffer)
elif x == 0x4C:
thing = self.uart.readchar()
checksum = self.uart.readchar()
if checksum == self._get_checksum([x, thing]):
pass
else:
print(x)
size = self._send_value(self.data)
if not size:
self.connected = False
# check for memory leaks...
for i in range(0, 1000):
uart1 = UART(1, 1000000)
uart2 = UART(2, 1000000)
# next ones must raise
try:
UART(1, 9600, parity=None, pins=('GP12', 'GP13', 'GP7'))
except Exception:
print('Exception')
try:
UART(1, 9600, parity=UART.ODD, pins=('GP12', 'GP7'))
except Exception:
print('Exception')
'''
uart1 = UART(0, 1000000)
uart1.deinit()
try:
uart0.any()
except Exception:
print('Exception')
try:
uart0.read()
except Exception:
print('Exception')
try:
uart0.write('abc')
except Exception:
dist_str = "%.1f"%(dist)
print("[DISTANCE]: " + dist_str)
img.draw_string(2,47, dist_str,scale=3)
lcd.display(img)
continue
name,dist = get_nearest(feature_list,plist)
#print(clock.fps())
if dist < 50 and name != "exclude": #50 is modified from original value 200
img.draw_rectangle(1,46,222,132,color=br.get_color(0,255,0),thickness=3)
img.draw_string(2,47 +30, "%s"%(name),scale=3)
if old_name != name:
namestring = str(name) + "\n" #UART to StickC
uart_Port.write(namestring) #UART to StickC
# print(name) #modified from original
lcd.display(img)
br.play_sound("/sd/voice/"+name+".wav")
old_name = name
else:
old_name = ''
# output
img.draw_string(2,47, "%.2f "%(dist),scale=3)
lcd.display(img)
kpu.fmap_free(fmap)
except KeyboardInterrupt:
kpu.deinit(task)
sys.exit()
uart_Port.deinit() #UART to StickC
del uart_Port #UART to StickC
class CORGI85():
def __init__(self):
try:
fm.register(board_info.WIFI_RX, fm.fpioa.UART2_TX)
fm.register(board_info.WIFI_TX, fm.fpioa.UART2_RX)
self.uart = UART(UART.UART2,
115200,
8,
None,
1,
timeout=1000,
read_buf_len=4096)
print("Init CORGI85")
except:
print("Unable to init UART")
def deinit(self):
self.uart.deinit()
del self.uart
def reset(self):
self.uart.write("\rRESET,\r")
def wifi_check(self):
data = self.uart.read()
self.uart.write("\rWIFI_CHECK,\r")
time.sleep_ms(100)
data = self.uart.read()
return int(data[0])
def BLYNK_config(self):
self.uart.write("\rBLYNK,0,\r")
def BLYNK_Set_auth(self, auth):
self.uart.write("\rBLYNK,1,")
self.uart.write(auth)
self.uart.write(",\r")
def BLYNK_Set_host(self, host):
self.uart.write("\rBLYNK,2,")
self.uart.write(host)
self.uart.write(",\r")
def BLYNK_Set_port(self, port):
self.uart.write("\rBLYNK,3,")
self.uart.write(str(port))
self.uart.write(",\r")
def BLYNK_write_int(self, VPIN, value):
self.uart.write("\rBLYNK,4,")
self.uart.write(str(VPIN))
self.uart.write(",")
self.uart.write(str(value))
self.uart.write(",\r")
def BLYNK_write_float(self, VPIN, value):
self.uart.write("\rBLYNK,5,")
self.uart.write(str(VPIN))
self.uart.write(",")
self.uart.write(str(value))
self.uart.write(",\r")
def BLYNK_write_char(self, VPIN, value):
self.uart.write("\rBLYNK,6,")
self.uart.write(str(VPIN))
self.uart.write(",")
self.uart.write(str(value))
self.uart.write(",\r")
def BLYNK_noti(self, value):
self.uart.write("\rBLYNK,7,")
self.uart.write(str(value))
self.uart.write(",\r")
def BLYNK_read(self, VPIN):
data = self.uart.read()
self.uart.write("\rBLYNK,8,")
self.uart.write(str(VPIN))
self.uart.write(",\r")
time.sleep_ms(10)
data = self.uart.read()
return data
class RPLidar(object):
def __init__(self, id = 2, baudrate=115200, timeout=5000, motoctl = 'X6'):
self.uart = None
self.motoctl = Pin(motoctl)
self.motoctl_timer = Timer(2, freq = 20000)
self.motoPWM_channel = self.motoctl_timer.channel(1, Timer.PWM, pin=self.motoctl)
self.motoPWM_channel.pulse_width_percent(50)
self.connect(id, baudrate, timeout)
self._rxbuffer = bytearray(32)
self._headings = array('H', [0 for i in range(READINGS_LENGTH)])#heading = heading[i]/64.0
self._distances = array('H', [0 for i in range(READINGS_LENGTH)])#distance = distance[i]/4.0 #in mm
self._readings_index = 0
self._descriptor_queue = collections.deque((), 32) #File fifo
self._next_data_type = None
self._status = None
self._error = None
self._scanerrors = 0
def connect(self, id, _baudrate, _timeout):
self.uart = UART(id)
self.uart.init(baudrate = _baudrate, bits=8, parity=None, stop=1, timeout = _timeout, read_buf_len=RXBUFFER_LENGTH)
self.set_motor_pwm()
def disconnect(self):
self.uart.deinit()
self.set_motor_pwm(0)
def _send_request(self, command):
if command == COMMAND_SCAN:
self._descriptor_queue.append((SCAN_RESPONSE_LENGTH, False, SCAN_DATATYPE))
elif command == COMMAND_GET_HEALTH:
self._descriptor_queue.append((GET_HEALTH_RESPONSE_LENGTH, False, GET_HEALTH_DATATYPE))
req = START_FLAG_1 + command
self.uart.write(req)
print('Command sent: %s' % req)
def _read_response_descriptor(self):
descriptor = self.uart.read(RESPONSE_DECRIPTOR_LENGTH)
print('Recieved descriptor: ', descriptor)
if(descriptor == None):
print("Timeout")
raise CommunicationError
elif(len(descriptor) != RESPONSE_DECRIPTOR_LENGTH):
print("Descriptor length mismatch")
raise CommunicationError
elif(not descriptor.startswith(START_FLAG_1 + START_FLAG_2)):
print("Wrong descriptor starting bytes")
raise CommunicationError
data_response_lenght = int.from_bytes(descriptor[2:5], 'little') & ~(0b11<<28) #Remove 2btis from last byte that are reserved for send_mode
send_mode = int.from_bytes(descriptor[5:6], 'little') & 0b11000000 #Extract the 2 bits from the byte
is_single = send_mode == 0x0
data_type = descriptor[6]
print("Data response length : ", data_response_lenght)
print("is single : ", is_single)
print("data type : ", data_type)
return data_response_lenght, is_single, data_type
def _read_response(self, length):
#print("Trying to read response: ",length," bytes")
bytes_read = self.uart.readinto(self._rxbuffer, length)
#print('Recieved data: ', self._rxbuffer)
if bytes_read == None :
print("Timout")
raise CommunicationError
if bytes_read != length:
print('Wrong body size')
raise CommunicationError
def _serial_handler(self):
if(bool(self._descriptor_queue)): #if descriptor queue is not empty, expecting a response descriptor
data_response_lenght, is_single, data_type = self._descriptor_queue.popleft()
if self._read_response_descriptor() != (data_response_lenght, is_single, data_type):
print("Unexpected response descirptor")
raise CommunicationError
self._next_data_type = data_type
return
elif self._next_data_type == SCAN_DATATYPE:
self._read_response(SCAN_RESPONSE_LENGTH)
S = self._rxbuffer[0] & 0b00000001
not_S = (self._rxbuffer[0] & 0b00000010) >> 1
C = self._rxbuffer[1] & 0b00000001
if S == not_S:
#print("Problem S = not_S")
self._scanerrors += 1
return
#quality = data[0] >>
if C != 1:
#print("Problem C != 1")
self._scanerrors += 1
return
if(self._scanerrors > 10):#11 consecutive scan error, reseting lidar
print("Many consecutive scan errors, reseting lidar")
self.reset()
self._scanerrors = 0
self.start_scanning()
return
self._scanerrors = 0 #managed to read without error
distance_q2 = (self._rxbuffer[3]) + (self._rxbuffer[4] << 8)
if distance_q2 != 0:
heading = ((self._rxbuffer[1] >> 1) + (self._rxbuffer[2] << 7))
self._headings[self._readings_index] = heading
self._distances[self._readings_index] = distance_q2
self._readings_index += 1
if(self._readings_index >= READINGS_LENGTH):
self._readings_index = 0
elif self._next_data_type == 6:
self._read_response(3)
print(self._rxbuffer[0:1])
self._status = int.from_bytes(self._rxbuffer[0:1], "little")
self._error = int.from_bytes(self._rxbuffer[1:2], "little")
def set_motor_pwm(self, pulse_width_percent=50):
self.motoPWM_channel.pulse_width_percent(pulse_width_percent)
def get_health(self):
self._status = None
self._error = None
self._send_request(COMMAND_GET_HEALTH)
while self._status == None or self._error == None:
time.sleep(0.02)
print("Status : ", self._status)
print("Error : ", self._error)
return self._status, self._error
def stop(self):
'''RPLIDAR will exit the current scanning state.
The laser diode and the measurement system will be disabled and the Idle state will be entered.
This request will be ignored when RPLIDAR is in the Idle or Protection Stop state.
Since RPLIDAR won’t send response packet for this request, host systems should
wait for at least 1 millisecond (ms) before sending another request'''
print("Stopping scan")
self.should_scan = False
self._send_request(COMMAND_STOP)
time.sleep(.002)
if self.uart.any() > 0:
print("Clearing buffer")
self.uart.read() #clear uart buffer
def reset(self):
'''A reset operation will make RPLIDAR revert to a similar state as it has just been
powered up. This request is useful when RPLIDAR has entered the Protection Stop
state. After a core reset, RPLIDAR will return to the idle state which will accept the
start scan request again.
Since RPLIDAR won’t send response packet for this request, host systems should
wait for at least 2 milliseconds (ms) before sending another request. '''
print("Resseting RPLidar")
self._send_request(COMMAND_RESET)
time.sleep(1)
if self.uart.any() > 0:
print("Clearing buffer")
self.uart.read(self.uart.any()) #clear uart buffer
while bool(self._descriptor_queue):
self._descriptor_queue.popleft()
def start_scanning(self):
self._send_request(COMMAND_SCAN)
#Slow no preallocation
def get_reading(self):
reading = []
for i in range(len(self._headings)):
reading.append([self._headings[i]/64.0, self._distances[i]/4.0])
return reading
def get_headings_mv(self):
return memoryview(self._headings)
def get_distances_mv(self):
return memoryview(self._distances)
def update(self):
inBuff = self.uart.any()
if(inBuff > 0):
while (bool(self._descriptor_queue) and inBuff >= RESPONSE_DECRIPTOR_LENGTH) or \
(self._next_data_type == SCAN_DATATYPE and inBuff >= SCAN_RESPONSE_LENGTH) or \
(self._next_data_type == GET_HEALTH_DATATYPE and inBuff >= GET_HEALTH_RESPONSE_LENGTH):
self._serial_handler()
inBuff = self.uart.any()
class DeepSleep:
WPUA_ADDR = const(0x09)
OPTION_REG_ADDR = const(0x0E)
IOCAP_ADDR = const(0x1A)
IOCAN_ADDR = const(0x1B)
WAKE_STATUS_ADDR = const(0x40)
MIN_BAT_ADDR = const(0x41)
SLEEP_TIME_ADDR = const(0x42)
CTRL_0_ADDR = const(0x45)
EXP_RTC_PERIOD = const(7000)
def __init__(self):
self.uart = UART(1, baudrate=10000, pins=(COMM_PIN, ), timeout_chars=5)
self.clk_cal_factor = 1
self.uart.read()
# enable the weak pull-ups control
self.clearbits(OPTION_REG_ADDR, 1 << 7)
def _send(self, data):
self.uart.write(bytes(data))
def _start(self):
self.uart.sendbreak(12)
self._send([0x55])
def _magic(self, address, and_val, or_val, xor_val, expected=None):
self._start()
self._send([address, and_val & 0xFF, or_val & 0xFF, xor_val & 0xFF])
if expected is None:
return self.uart.read()
else:
if expected > 0:
return self.uart.read(expected)
def _add_to_pin_mask(self, mask, pin):
if pin == 'P10' or pin == 'G17':
mask |= 0x01
elif pin == 'P17' or pin == 'G31':
mask |= 0x02
elif pin == 'P18' or pin == 'G30':
mask |= 0x08
else:
raise ValueError('Invalid Pin specified: {}'.format(pin))
return mask
def _create_pin_mask(self, pins):
mask = 0
if type(pins) is str:
mask = self._add_to_pin_mask(mask, pins)
else:
for pin in pins:
mask = self._add_to_pin_mask(mask, pin)
return mask & PIN_MASK
def poke(self, address, value):
self._magic(address, 0, value, 0)
def peek(self, address):
try:
return self._magic(address, 0xFF, 0, 0)[6]
except:
return self._magic(address, 0xFF, 0, 0)[6]
def setbits(self, address, mask):
self._magic(address, 0xFF, mask, 0)
def clearbits(self, address, mask):
self._magic(address, ~mask, 0, 0)
def togglebits(self, address, mask):
self._magic(address, 0xFF, 0, mask)
def calibrate(self):
# The microcontroller will send the value of CTRL_0 after setting the bit
# and then will send the following pattern through the data line:
#
# val | 1 | 0 | 1*| 0 | 1*| 0 | 1
# ms | 1 | 1 | 1 | 1 | 8 | 1 | -
#
# The idea is to measure the real life duration of periods marked with *
# and substract them. That will remove any errors common to both measurements
# The result is 7 ms as generated by the PIC LF clock.
# It can be used to scale any future sleep value.
# setbits, but limit the number of received bytes to avoid confusion with pattern
self._magic(CTRL_0_ADDR, 0xFF, 1 << 2, 0, 0)
self.uart.deinit()
self._pulses = pycom.pulses_get(COMM_PIN, 150)
self.uart.init(baudrate=10000, pins=(COMM_PIN, ), timeout_chars=5)
idx = 0
for i in range(len(self._pulses)):
if self._pulses[i][1] > EXP_RTC_PERIOD:
idx = i
break
try:
self.clk_cal_factor = (self._pulses[idx][1] - self._pulses[(idx - 1)][1]) / EXP_RTC_PERIOD
except:
self.clk_cal_factor = 1
if self.clk_cal_factor > 1.25 or self.clk_cal_factor < 0.75:
self.clk_cal_factor = 1
def enable_auto_poweroff(self):
self.setbits(CTRL_0_ADDR, 1 << 1)
def enable_pullups(self, pins):
mask = self._create_pin_mask(pins)
self.setbits(WPUA_ADDR, mask)
def disable_pullups(self, pins):
mask = self._create_pin_mask(pins)
self.clearbits(WPUA_ADDR, mask)
def enable_wake_on_raise(self, pins):
mask = self._create_pin_mask(pins)
self.setbits(IOCAP_ADDR, mask)
def disable_wake_on_raise(self, pins):
mask = self._create_pin_mask(pins)
self.clearbits(IOCAP_ADDR, mask)
def enable_wake_on_fall(self, pins):
mask = self._create_pin_mask(pins)
self.setbits(IOCAN_ADDR, mask)
def disable_wake_on_fall(self, pins):
mask = self._create_pin_mask(pins)
self.clearbits(IOCAN_ADDR, mask)
def get_wake_status(self):
# bits as they are returned from PIC:
# 0: PIN 0 value after awake
# 1: PIN 1 value after awake
# 2: PIN 2 value after awake
# 3: PIN 3 value after awake
# 4: TIMEOUT
# 5: POWER ON
wake_r = self.peek(WAKE_STATUS_ADDR)
return {'wake': wake_r & (TIMER_WAKE | POWER_ON_WAKE),
'P10': wake_r & 0x01, 'P17': (wake_r & 0x02) >> 1,
'P18': (wake_r & 0x08) >> 3}
def set_min_voltage_limit(self, value):
# voltage value passed in volts (e.g. 3.6) and round it to the nearest integer
value = int(((256 * 2.048) + (value / 2)) / value)
self.poke(MIN_BAT_ADDR, value)
def go_to_sleep(self, seconds):
gc.collect()
while True:
try:
self.calibrate()
except Exception:
pass
# the 1.024 factor is because the PIC LF operates at 31 KHz
# WDT has a frequency divider to generate 1 ms
# and then there is a binary prescaler, e.g., 1, 2, 4 ... 512, 1024 ms
# hence the need for the constant
# round to the nearest integer
seconds = int((seconds / (1.024 * self.clk_cal_factor)) + 0.5)
self.poke(SLEEP_TIME_ADDR, (seconds >> 16) & 0xFF)
self.poke(SLEEP_TIME_ADDR + 1, (seconds >> 8) & 0xFF)
self.poke(SLEEP_TIME_ADDR + 2, seconds & 0xFF)
self.setbits(CTRL_0_ADDR, 1 << 0)
def hw_reset(self):
self.setbits(CTRL_0_ADDR, 1 << 4)
