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61 lines
1.5 KiB
61 lines
1.5 KiB
4 days ago
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/*
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* modbus.h
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*
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* Created on: Jul 3, 2025
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* Author: shiyanlei
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*/
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#ifndef __MODBUS_SLAVE_H
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#define __MODBUS_SLAVE_H
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#include "stm32g4xx_hal.h"
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/* 定义Modbus相关参数 */
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#define MODBUS_SLAVE_ADDRESS 0x34
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#define MODBUS_FUNCTION_CODE_03 0x03
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#define MODBUS_FUNCTION_CODE_06 0x06
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#define MODBUS_FUNCTION_CODE_10 0x10 // 写多个寄存器功能码
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#define MODBUS_BUFFER_SIZE 256
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#define MODBUS_TIMEOUT_MS 2
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#define MODBUS_CRC_OFF 0 //==1关闭CRC校验
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/* 定义寄存器相关参数 */
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#define REGISTER_START_ADDRESS 0x0000
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//#define REGISTER_COUNT 10
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#define REGISTER_COUNT 12
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extern uint16_t holdingRegisters[REGISTER_COUNT];
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extern uint8_t RS485_1_RX;
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extern uint8_t RS485_1_Host_Existed;
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#define registerWritable_0 1
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#define registerWritable_1 1
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#define registerWritable_2 1
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#define registerWritable_3 1
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#define registerWritable_4 1
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#define registerWritable_5 1
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#define registerWritable_6 1
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#define registerWritable_7 1
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#define registerWritable_8 1
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#define registerWritable_9 1
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#define registerWritable_10 1
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#define registerWritable_11 1
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//holdingRegisters[0]= motor_cmd //0:stop 1:forward 2:reverse
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//holdingRegisters[1]= HX711_A_F //int16_t 10g
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//holdingRegisters[2]= HX711_K //uint16_t
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//holdingRegisters[3]= HX711_D //int16_t 1g
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//holdingRegisters[4]= HX711_B_F //int16_t 10g
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extern void MB_WriteHoldingReg(uint8_t _addr,
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uint16_t _reg, uint16_t _data);
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/* 初始化Modbus从机 */
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void Modbus_Init(void);
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/* 处理Modbus消息 */
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void Modbus_Process(void);
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#endif /* __MODBUS_SLAVE_H */
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