def test_page_bytes(self):
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56)
self.assertEqual(i2c.page_bytes, 8)
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56, page_bytes=16)
self.assertEqual(i2c.page_bytes, 16)
with self.assertRaises(TypeError):
i2c.page_bytes = "1"
with self.assertRaises(ValueError):
i2c.page_bytes = -1
with self.assertRaises(ValueError):
i2c.page_bytes = 0
with self.assertRaises(ValueError):
i2c.page_bytes = 4
with self.assertRaises(ValueError):
i2c.page_bytes = 10
with self.assertRaises(ValueError):
i2c.page_bytes = 2048
i2c.page_bytes = 32
self.assertEqual(i2c.page_bytes, 32)
i2c.page_bytes = 64
self.assertEqual(i2c.page_bytes, 64)
def test_init(self):
with self.assertRaises(TypeError):
pylibi2c.I2CDevice()
with self.assertRaises(TypeError):
pylibi2c.I2CDevice(1, 2)
with self.assertRaises(TypeError):
pylibi2c.I2CDevice("1", "2")
with self.assertRaises(TypeError):
pylibi2c.I2CDevice("/dev/i2c-1")
with self.assertRaises(IOError):
pylibi2c.I2CDevice("/dev/i2c-100", 0x56)
async def open(self, ws, data):
# Parse request
device = I2CDevice(**data).__dict__
device.pop("handle")
# First open i2c bus
self.__device = pylibi2c.I2CDevice(**device)
def test_setattr(self):
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56)
with self.assertRaises(AttributeError):
i2c.bus = ""
with self.assertRaises(AttributeError):
i2c.addr = ""
def __init__(self, i2c_chan = 1, i2c_base_addr = 0x3B):
self.i2c_chan = i2c_chan
self.i2c_base_addr = i2c_base_addr
self.i2c_bus = pylibi2c.I2CDevice(
'/dev/i2c-'+str(self.i2c_chan),
self.i2c_base_addr,
iaddr_bytes=2
)
def __init__(self):
logger.info('MPU: Opening i2c device @/dev/i2c-1, addr 0x68')
self.device = pylibi2c.I2CDevice('/dev/i2c-1', 0x68)
self.device.delay = 10
self.device.page_bytes = 8
self.device.flags = pylibi2c.I2C_M_IGNORE_NAK
time.sleep(3)
logger.info('MPU: disabling sleep mode')
i2cdev.setSleepMode(self.device, enabled=0)
self.gyro_cal_x = 0
self.gyro_cal_y = 0
self.gyro_cal_z = 0
def test_tenbit(self):
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56)
self.assertEqual(i2c.tenbit, False)
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56, tenbit=1)
self.assertEqual(i2c.tenbit, True)
with self.assertRaises(TypeError):
i2c.tenbit = 0
with self.assertRaises(TypeError):
i2c.tenbit = 100
with self.assertRaises(TypeError):
i2c.tenbit = "True"
i2c.tenbit = False
self.assertEqual(i2c.tenbit, False)
i2c.tenbit = True
self.assertEqual(i2c.tenbit, True)
def test_iaddr_bytes(self):
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56)
self.assertEqual(i2c.iaddr_bytes, 1)
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56, iaddr_bytes=2)
self.assertEqual(i2c.iaddr_bytes, 2)
with self.assertRaises(TypeError):
i2c.iaddr_bytes = "1"
with self.assertRaises(ValueError):
i2c.iaddr_bytes = -1
with self.assertRaises(ValueError):
i2c.iaddr_bytes = 5
i2c.iaddr_bytes = 0
self.assertEqual(i2c.iaddr_bytes, 0)
i2c.iaddr_bytes = 1
self.assertEqual(i2c.iaddr_bytes, 1)
i2c.iaddr_bytes = 3
self.assertEqual(i2c.iaddr_bytes, 3)
def test_delay(self):
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56)
self.assertEqual(i2c.delay, 1)
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56, delay=0)
self.assertEqual(i2c.delay, 0)
with self.assertRaises(TypeError):
i2c.delay = "100"
with self.assertRaises(TypeError):
i2c.delay = 0.1
with self.assertRaises(ValueError):
i2c.delay = -1
with self.assertRaises(ValueError):
i2c.delay = 101
i2c.delay = 10
self.assertEqual(i2c.delay, 10)
i2c.delay = 100
self.assertEqual(i2c.delay, 100)
def test_flags(self):
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56)
self.assertEqual(i2c.flags, 0)
i2c = pylibi2c.I2CDevice("/dev/i2c-1", 0x56, flags=1)
self.assertEqual(i2c.flags, 1)
with self.assertRaises(TypeError):
i2c.flags = "100"
with self.assertRaises(TypeError):
i2c.flags = 0.1
with self.assertRaises(ValueError):
i2c.flags = -1
i2c.flags = 0
self.assertEqual(i2c.flags, 0)
i2c.flags = pylibi2c.I2C_M_NOSTART
self.assertEqual(i2c.flags, pylibi2c.I2C_M_NOSTART)
i2c.flags = pylibi2c.I2C_M_IGNORE_NAK
self.assertEqual(i2c.flags, pylibi2c.I2C_M_IGNORE_NAK)
page_bytes = args.get('page_bytes')
iaddr_bytes = args.get('iaddr_bytes')
data = args.get('data')
size = args.get('size')
ioctl = args.get('ioctl')
if data is None and size is None:
raise RuntimeError(
"'data' or 'size' must specified one, 'data' for write, 'size' for read"
)
# Create a i2c device
i2c = pylibi2c.I2CDevice(bus=bus,
addr=device,
page_bytes=page_bytes,
iaddr_bytes=iaddr_bytes,
delay=delay)
if data:
write_handle = i2c.ioctl_write if ioctl else i2c.write
ret = write_handle(iaddr, bytes(data.encode("ascii")))
print("Write: '{0:s}' to address: 0x{1:x}".format(data, iaddr))
print("Result:{}".format(ret))
else:
read_handle = i2c.ioctl_read if ioctl else i2c.read
data = read_handle(iaddr, size)
print("Read: {0:d} bytes data from address: 0x{1:x}".format(
size, iaddr))
print("Result:'{}'".format(data.decode("ascii")))
except (TypeError, IOError, ValueError, RuntimeError) as err:
def setUp(self):
self.i2c_size = 256
# 24C04 E2PROM test
self.i2c = pylibi2c.I2CDevice(bus="/dev/i2c-1",
addr=0x56,
page_bytes=16)
import ctypes
import pylibi2c
import time
#------CONNECT TO NZ AT GIVEN ADDRESS (e.g. 0x40) AND GIVE IT A NAME (e.g. "wheels")----
wheels = pylibi2c.I2CDevice('/dev/i2c-1',
0x40) # Open i2c device at address 0x3
wheels.delay = 10 # Set delay
wheels.page_bytes = 16 # Set page_bytes
wheels.flags = pylibi2c.I2C_M_IGNORE_NAK # Set flags
#------CONNECT TO ANOTHER NZ WITH A DIFFERENT ADDRESS AND NAME---------------------------
#head = pylibi2c.I2CDevice('/dev/i2c-1', 0x41) # Open i2c device at address 0x4
#head.delay = 10 # Set delay
#head.page_bytes = 16 # Set page_bytes
#head.flags = pylibi2c.I2C_M_IGNORE_NAK # Set flags
#------READ FROM THE NEARZERO------------------------------------------------------------
while True:
data1 = wheels.read(
0x0, 12
) #The last part is the buffer size; enough for 6 digits from each encoder
print(data1)
#data2 = head.read(0x0,12)
#print(data2)
#The first 6 digits give the encoder value from channel 1
#The second 6 digits give the encoder value from channel 2
#Digits 1 and 7 indicate sign, where 0 = positive and - = negative.
def i2cSetup(self):
self.address = pylibi2c.I2CDevice('/dev/i2c-1', self.address)
self.address.delay = 10
self.address.page_bytes = 16
self.address.flags = pylibi2c.I2C_M_IGNORE_NAK
import ctypes
import pylibi2c
import time
#------CONNECT TO NZ AT GIVEN ADDRESS (e.g. 0x40) AND GIVE IT A NAME (e.g. "wheels")------
wheels = pylibi2c.I2CDevice('/dev/i2c-1', 0x40)
wheels.delay = 10
wheels.page_bytes = 16
wheels.flags = pylibi2c.I2C_M_IGNORE_NAK
#------CONNECT TO ANOTHER NZ WITH A DIFFERENT ADDRESS AND NAME----------------------------
#head = pylibi2c.I2CDevice('/dev/i2c-1', 0x41)
#head.delay = 10
#head.page_bytes = 16
#head.flags = pylibi2c.I2C_M_IGNORE_NAK
#------WRITE COMMANDS TO NEARZERO---------------------------------------------------------
#(0x0, 'CHAN(1/2) MODE(v/p/s) SIGN(+/-) CMD CMD CMD CMD CMD "C" CMD CMD CMD CMD CMD')
wheels.write(
0x0,
'1v+00100c00200') #Drive channel 1 at velocity=100 with 200mA of current
wheels.write(
0x0,
'2v+00250c00320') #Drive channel 2 at velocity=250 with 320mA of current
#head.write(0x0, '1p+00000c00000') #Drive channel 1 at position=0 with 0mA of current
#head.write(0x0, '2p+01000c00600') #Drive channel 2 at position=1000 and 600mA of current
import ctypes
import pylibi2c
import time
import datetime
from firebase import firebase
# Open i2c device @/dev/i2c-0, addr 0x00, 16bits internal address
i2c = pylibi2c.I2CDevice('/dev/i2c-1', 0x08, iaddr_bytes=2)
# Set delay
i2c.delay = 10
# Set page_bytes
i2c.page_bytes = 16
# Set flags
i2c.flags = pylibi2c.I2C_M_IGNORE_NAK
# Inicializando buffer
buf = bytes(256)
firebase = firebase.FirebaseApplication(
'https://surveillaceathenaiot.firebaseio.com/', None)
while True:
#endereco I2C -> 8
data = i2c.ioctl_read(0x0, 8)
if data != '99999999':
import ctypes
import pylibi2c
import time
from log_setup import logger
from utils import i2cdev
logger.info('Opening i2c device @/dev/i2c-1, addr 0x68')
i2c = pylibi2c.I2CDevice('/dev/i2c-1', 0x68)
i2c.delay = 10
logger.info('Set delay = 10')
i2c.page_bytes = 8
logger.info('Set page bytes = 8')
i2c.flags = pylibi2c.I2C_M_IGNORE_NAK
logger.info('Set flags to ignore i2c device nak signal')
#i2cdev.setSleepMode(i2c, 0)
time.sleep(3)
pwr_reg = i2cdev.readByte(i2c, 0x6B)
#print(i2c.read(0x0, 256))
print(pwr_reg)
#logger.debug('Reading PWR MGMT register field')
#print(pwr_reg)
while True:
data = i2c.read(0x43, 6)
