UIFlow 上手教程
UiFlow1 快速上手
UiFlow1 Blockly
Event
UI
Unit
Module
Hat
UiFlow2 快速上手
Modbus Master
案例程序
实现Modbus主站，通过按钮A触发读取从站地址4的保持寄存器数据并显示在屏幕上
from m5stack import *
from m5ui import *
from uiflow import *
from modbus.master.uModBusSerial import uModBusSerial
setScreenColor(0x222222)
title0 = M5Title(title="Master Read Holding Register", x=60, fgcolor=0xFFFFFF, bgcolor=0xff0078)
label0 = M5TextBox(16, 212, "Press A Send Data", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label1 = M5TextBox(15, 69, "Text", lcd.FONT_DejaVu24, 0xe2ff00, rotate=0)
def buttonA_wasPressed():
# global params
label1.setText(str(modbus.read_holding_registers(4, 10, 3, False, timeout=)))
pass
btnA.wasPressed(buttonA_wasPressed)
modbus = uModBusSerial(2, tx=17, rx=16, baudrate=9600, data_bits=8, stop_bits=1, parity=None, ctrl_pin=None)功能说明
modbus = uModBusSerial(1, tx=0, rx=0, baudrate=9600, data_bits=8, stop_bits=1, parity=None, ctrl_pin=None)- UART 初始化配置
print((str('address:') + str((modbus.read_coils(1, 1, 0, timeout=2000)))))- 读取线圈状态
print((str('address:') + str((modbus.read_discrete_inputs(1, 1, 0, timeout=2000)))))- 读取离散输入
print((str('address:') + str((modbus.read_holding_registers(1, 1, 0, True, timeout=2000)))))- 读取保持寄存器
print((str('address:') + str((modbus.read_input_registers(1, 1, 0, True, timeout=2000)))))- 读取输入寄存器
print((str('write address:') + str((modbus.write_multiple_registers(1, 1, 0, True, timeout=2000)))))- 写多个线圈
print((str('write address:') + str((modbus.write_multiple_coils(1, 1, 0, timeout=2000)))))- 写多个寄存器
print((str('write address:') + str((modbus.write_single_coil(1, 1, 0xFF00, timeout=2000)))))- 写单个线圈
print((str('write address:') + str((modbus.write_single_register(1, 1, 0, True, timeout=2000)))))- 写单个寄存器