def _read_response(self):
header = self._read_nbytes(3)
try:
message = 'Header error. Is Cashcode connected to %s? Header is %s' % (
self.device, header)
if (header[0] <> self.p_sync or header[1] <> self.p_adr):
self.logger.debug(message)
raise AcceptorError(message=message, code=500)
except IndexError:
message = 'Header error. Header is %s' % (header)
self.logger.debug(message)
raise AcceptorError(message=message, code=500)
packet = self._read_nbytes(header[2] - 3 - 2)
crc = self._read_crc()
checkCrc = int2bytes(self.__calc_crc(header + packet))
if crc != checkCrc:
self.logger.debug(
'%s: _read_response. Crc not satisfied their=%s , my=%s' %
(self.__prefix, crc, checkCrc))
# self.logger.debug('%s: _read_response. response(len=%d) dec=%s, hex=%s ' % (self.__prefix, len(packet), packet, ints2hex(packet) ))
self.validate_statement(packet)
return packet
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_response(self):
header = self._read_nbytes(3)
try:
message = 'Header error. Is Cashcode connected to %s? Header is %s' % (self.device, header)
if (header[0] <> self.p_sync or header[1] <> self.p_adr):
self.logger.debug( message )
raise AcceptorError( message = message, code = 500 )
except IndexError:
message = 'Header error. Header is %s' % ( header )
self.logger.debug( message )
raise AcceptorError( message = message, code = 500 )
packet = self._read_nbytes( header[2] - 3 - 2 )
crc = self._read_crc()
checkCrc = int2bytes( self.__calc_crc(header + packet) )
if crc != checkCrc:
self.logger.debug('%s: _read_response. Crc not satisfied their=%s , my=%s' % (self.__prefix, crc, checkCrc))
# self.logger.debug('%s: _read_response. response(len=%d) dec=%s, hex=%s ' % (self.__prefix, len(packet), packet, ints2hex(packet) ))
self.validate_statement(packet)
return packet
