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41 lines
1.2 KiB
41 lines
1.2 KiB
#ifndef __MODBUS_SLAVE_H
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#define __MODBUS_SLAVE_H
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#include "stm32g4xx_hal.h"
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#include <stdint.h>
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#include <stdbool.h>
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#include "com.h"
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/* Modbus 相关参数 */
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#define MODBUS_SLAVE_ADDRESS 0x34
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#define MODBUS_FUNCTION_CODE_01 0x01
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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
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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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/* 寄存器相关参数 */
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#define REGISTER_START_ADDRESS 0x0000
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#define REGISTER_COUNT 12
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/* 全局变量声明 */
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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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extern char dmk_read_state;
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/* TComCtrl 回调 — 注册到 RS485_1，由 rd_ComRead 自动调用 */
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int Modbus_Slave_Check(char *_pBuffer, uint32_t _iSize);
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void Modbus_Slave_Decode(const char *_pBuffer, uint32_t _iSize);
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/* Modbus 主机接口 */
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void Modbus_Master_Init(TComCtrl *ptRS485);
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void MB_WriteHoldingReg(uint8_t _addr, uint16_t _reg, uint16_t _data);
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void calculate_dmk(void);
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/* CRC 计算 */
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uint16_t CalculateCRC(uint8_t *data, uint8_t length);
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#endif /* __MODBUS_SLAVE_H */
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