def send_single_command(self, cmd, read_response = True): packet = [self.p_sync, self.p_adr, 0x06, cmd] packet = packet + int2bytes( self.__calc_crc(packet) ) self.serial.write( serial.to_bytes( packet ) ) if read_response: return self._read_response() return True
def send_single_command(self, cmd, read_response=True):
packet = [self.p_sync, self.p_adr, 0x06, cmd]
packet = packet + int2bytes(self.__calc_crc(packet))
self.serial.write(serial.to_bytes(packet))
if read_response:
return self._read_response()
return True
def send_command(self, data, read_response = True): packet = [ self.p_sync, self.p_adr, 5 + len(data)] + data packet = packet+ int2bytes(self.__calc_crc(packet)) self.serial.write(serial.to_bytes(packet) ) if read_response: return self._read_response() return True
def send_command(self, data, read_response=True):
packet = [self.p_sync, self.p_adr, 5 + len(data)] + data
packet = packet + int2bytes(self.__calc_crc(packet))
self.serial.write(serial.to_bytes(packet))
if read_response:
return self._read_response()
return True
def __read(self, timeout = 60):
time_start = time.time()
frame = []
data = ''
byte = self.serial.read(1)
data += byte
try:
first_byte = int(byte2hex( byte ), 16)
self.logger.debug('DispenserAdapter.__read: first byte is: 0x%02X' % first_byte)
if first_byte == self.dispenser.p_nck:
self.logger.debug('DispenserAdapter.__read: first byte is NCK')
return [self.dispenser.p_nck]
if first_byte == self.dispenser.p_ack:
self.logger.debug('DispenserAdapter.__read: first byte is: ACK')
return [self.dispenser.p_ack]
byte = self.serial.read(1)
data += byte
self.logger.debug('DispenserAdapter.__read: Wrong first byte in response 0x%02X' % first_byte )
self.logger.debug('DispenserAdapter.__read: Next byte in response is 0x%02X' % int(byte2hex( byte )) )
except Exception as e:
self.logger.debug('DispenserAdapter.__read: %s' % str(e.args) )
pass
self.logger.debug('DispenserAdapter.__read: first byte is detected')
while True:
if time.time() - time_start > timeout:
self.logger.debug('DispenserAdapter.__read: timeout to read. ')
for _, i in enumerate(serial.to_bytes(data)):
frame.append( int(byte2hex(i), 16) )
self.logger.debug('DispenserAdapter.__read: full dump of response: %s' % (["0x%02X" % x for x in frame]))
raise DispenserError(message = 'Timeout to read', code = 500)
try:
if int(byte2hex(byte), 16) == self.dispenser.p_etx:
break
except Exception as e:
self.logger.debug('Error in read cycle: %s' % str(e.args) )
time.sleep( .01 )
byte = self.serial.read(1)
data += byte
self.logger.debug('DispenserAdapter.__read: cycle is complete')
data += self.serial.read(1)
for _, i in enumerate(serial.to_bytes(data)):
frame.append( int(byte2hex(i), 16) )
self.logger.debug('DispenserAdapter.__read: full dump of response: [%s]' % ([x for x in frame]))
return frame
def __write(self, bytes): return self.serial.write(serial.to_bytes(bytes))
(BYTE*8)(0x9c, 0xe4, 0x08, 0x00, 0x3e, 0x30, 0x1f, 0x73))
DIGCF_PRESENT = 2
DIGCF_DEVICEINTERFACE = 16
INVALID_HANDLE_VALUE = 0
ERROR_INSUFFICIENT_BUFFER = 122
SPDRP_HARDWAREID = 1
SPDRP_FRIENDLYNAME = 12
ERROR_NO_MORE_ITEMS = 259
DICS_FLAG_GLOBAL = 1
DIREG_DEV = 0x00000001
KEY_READ = 0x20019
REG_SZ = 1
# workaround for compatibility between Python 2.x and 3.x
PortName = serial.to_bytes([80, 111, 114, 116, 78, 97, 109, 101]) # "PortName"
def comports():
"""This generator scans the device registry for com ports and yields port, desc, hwid"""
g_hdi = SetupDiGetClassDevs(ctypes.byref(GUID_CLASS_COMPORT), None, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE);
#~ for i in range(256):
for dwIndex in range(256):
did = SP_DEVICE_INTERFACE_DATA()
did.cbSize = ctypes.sizeof(did)
if not SetupDiEnumDeviceInterfaces(g_hdi, None, ctypes.byref(GUID_CLASS_COMPORT), dwIndex, ctypes.byref(did)):
if ctypes.GetLastError() != ERROR_NO_MORE_ITEMS:
raise ctypes.WinError()
break
dwNeeded = DWORD()
def __read(self, timeout=60):
time_start = time.time()
frame = []
data = ""
byte = self.serial.read(1)
data += byte
try:
first_byte = int(byte2hex(byte), 16)
self.logger.debug("DispenserAdapter.__read: first byte is: 0x%02X" % first_byte)
if first_byte == self.dispenser.p_nck:
self.logger.debug("DispenserAdapter.__read: first byte is NCK")
return [self.dispenser.p_nck]
if first_byte == self.dispenser.p_ack:
self.logger.debug("DispenserAdapter.__read: first byte is: ACK")
return [self.dispenser.p_ack]
byte = self.serial.read(1)
data += byte
self.logger.debug("DispenserAdapter.__read: Wrong first byte in response 0x%02X" % first_byte)
self.logger.debug("DispenserAdapter.__read: Next byte in response is 0x%02X" % int(byte2hex(byte)))
except Exception as e:
self.logger.debug("DispenserAdapter.__read: %s" % str(e.args))
pass
self.logger.debug("DispenserAdapter.__read: first byte is detected")
while True:
if time.time() - time_start > timeout:
self.logger.debug("DispenserAdapter.__read: timeout to read. ")
for _, i in enumerate(serial.to_bytes(data)):
frame.append(int(byte2hex(i), 16))
self.logger.debug(
"DispenserAdapter.__read: full dump of response: %s" % (["0x%02X" % x for x in frame])
)
raise DispenserError(message="Timeout to read", code=500)
try:
if int(byte2hex(byte), 16) == self.dispenser.p_etx:
break
except Exception as e:
self.logger.debug("Error in read cycle: %s" % str(e.args))
time.sleep(0.01)
byte = self.serial.read(1)
data += byte
self.logger.debug("DispenserAdapter.__read: cycle is complete")
data += self.serial.read(1)
for _, i in enumerate(serial.to_bytes(data)):
frame.append(int(byte2hex(i), 16))
self.logger.debug("DispenserAdapter.__read: full dump of response: [%s]" % ([x for x in frame]))
return frame
def __write(self, bytes):
return self.serial.write(serial.to_bytes(bytes))