def readstring(self, readlist, size=1):
"""
Read String from Device.
readlist = [function code, address, data type]
"""
if self.isopened is False:
return None
try:
ret = pymodbus.read_registers(readlist[0:3], size)
except BaseException as err:
if self.platform == 'linux':
led.ioctl(led.IXORA_LED4, led.GREEN, led.LOW)
led.ioctl(led.IXORA_LED4, led.RED, led.HIGH)
print(err)
return None
else:
if self.platform == 'linux':
led.ioctl(led.IXORA_LED4, led.RED, led.LOW)
led.ioctl(led.IXORA_LED4, led.GREEN, led.HIGH)
else:
pass
# And each hexadecimal number into ASCII code
return ''.join((lambda v: [chr(i) for i in v])(ret)).strip('\x00')
def send(self, led, readlist, length=1):
"""Send Data to Device."""
msg = 'Code = ' + str(readlist[0]) + ' Addr = %4d' % (readlist[1]) + ' => '
try:
ret = pymodbus.read_registers(readlist[0:3], length)
msg += str(ret)
led.normal()
except BaseException as err:
led.error()
print(err)
return -1
return ret[0]
def send(self, readlist, length=1):
"""Send Data to Device."""
try:
ret = pymodbus.read_registers(readlist[0:3], length)
except BaseException as err:
led.ioctl(led.IXORA_LED4, led.GREEN, led.LOW)
led.ioctl(led.IXORA_LED4, led.RED, led.HIGH)
print(err)
return None
else:
led.ioctl(led.IXORA_LED4, led.RED, led.LOW)
led.ioctl(led.IXORA_LED4, led.GREEN, led.HIGH)
finally:
pass
# When the length is greater than 1, it is a string.
# And each hexadecimal number into ASCII code
return ret[0] if length == 1 else ''.join(
(lambda val: [chr(i) for i in val])(ret)).strip('\x00')
def readregs(self, readlist, size=1):
"""
Read Data from Device.
readlist = [function code, address, data type]
"""
if self.isopened is False:
return None
try:
retlist = pymodbus.read_registers(readlist[0:3], size)
except BaseException as err:
if self.platform == 'linux':
led.ioctl(led.IXORA_LED4, led.GREEN, led.LOW)
led.ioctl(led.IXORA_LED4, led.RED, led.HIGH)
print(err)
return None
else:
if self.platform == 'linux':
led.ioctl(led.IXORA_LED4, led.RED, led.LOW)
led.ioctl(led.IXORA_LED4, led.GREEN, led.HIGH)
else:
pass
return retlist