Does anyone know a good library supporting Modbus TCP client mode for the pico in python? I have implemented a client that writes values to a server based on joystick movements. This is the code I wrote:
import pygame
import pymodbus
from pymodbus.client import ModbusTcpClient
# Initialize pygame and the joystick
pygame.init()
pygame.joystick.init()
joystick_count = pygame.joystick.get_count()
print(f'[+] {joystick_count} joystick(s) found!')
joystick = pygame.joystick.Joystick(0)
joystick.init()
# Create a Modbus TCP client
client = ModbusTcpClient('127.0.0.1')
client.connect()
while True:
# Poll the joystick for events
for event in pygame.event.get():
if event.type == pygame.JOYHATMOTION:
# Get the joystick axis and value
print(event.value)
# Handle joyhatmotion UP event
if event.value[1] == 1:
client.write_registers(0x1, 2)
print('[+] UP Event Handled')
# Handle joyhatmotion DOWN event
if event.value[1] == -1:
client.write_registers(0x1, 8)
print('[+] DOWN Event Handled')
# Handle joyhatmotion LEFT event
if event.value[0] == -1:
client.write_registers(0x1, 4)
print('[+] LEFT Event Handled')
# Handle joyhatmotion RIGHT event
if event.value[0] == 1:
client.write_registers(0x1, 6)
print('[+] RIGHT Event Handled')
# Handle joyhatmotion NEUTRAL POSITION event
if event.value == (0,0):
client.write_registers(0x1, 0)
elif event.type == pygame.JOYBUTTONDOWN:
# Handle joyhatmotion RIGHT TRIGGER event
if event.button == 5:
client.write_registers(0x1, 6842)
print('[+] RIGHT TRIGGER Event Handled')
# Handle joyhatmotion LEFT TRIGGER event
if event.button == 4:
client.write_registers(0x1, 6248)
print('[+] LEFT TRIGGER Event Handled')
elif event.type == pygame.JOYBUTTONUP:
client.write_registers(0x1, 0)
# Close the Modbus TCP client when the program is finished
client.close()
For instance, I have tried GitHub - brainelectronics/micropython-modbus: Micropython Modbus RTU Slave/Master and TCP Server/Slave library but it doesn’t seem to provide a simple way to connect to the
Modbus master device by IP and issue a read register command.
Any help would be greatly appreciated.
Cheers,
Ric
