108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
#ifndef __MODBUS_H
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#define __MODBUS_H
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#include "stdint.h"
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#include "string.h"
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#include "usart.h"
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#include "tim.h"
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/*--------------------------------- 宏定义 -----------------------------------*/
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//功能码
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#define ReadCoilState 0x01 //读取线圈状态
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#define ReadDisInputState 0x02 //读取输入状态
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#define ReadHoldReg 0x03 //读取保持寄存器
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#define ReadInputReg 0x04 //读取输入寄存器
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#define WriteSingleCoil 0x05 //强制写单线圈输出状态
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#define WriteSingleReg 0x06 //预设(写)单寄存器
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#define WriteMultiCoil 0x0F //强制写多线圈输出状态
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#define WriteMultiReg 0x10 //预设(写)多寄存器
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#define COIL_ADD_MIN 0x10
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#define COIL_ADD_MAX 0x5F
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#define MAX_COIL_NUM ((COIL_ADD_MAX) - (COIL_ADD_MIN) + 1)
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#define DIS_ADD_MIN 0x00
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#define DIS_ADD_MAX 0x5F
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#define MAX_DIS_NUM ((DIS_ADD_MAX) - (DIS_ADD_MIN) + 1)
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#define INPUT_REG_ADD_MIN 0x00
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#define INPUT_REG_ADD_MAX 0x5F
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#define MAX_INPUT_REG_NUM ((INPUT_REG_ADD_MAX) - (INPUT_REG_ADD_MIN) + 1)
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#define HOLD_REG_ADD_MIN 0x00
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#define HOLD_REG_ADD_MAX 0x5F
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#define MAX_HOLD_REG_NUM ((HOLD_REG_ADD_MAX) - (HOLD_REG_ADD_MIN) + 1)
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#define BROADCAST_ADDRESS 0x00
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extern int LOCAL_ADDRESS;
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#define MAKEWORD(a,b) ((uint16_t)(((uint8_t)(a)) | ((uint16_t)((uint8_t)(b))) << 8))
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//串口相关定义
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#define UART1_RXSIZE 1024 //一帧接收数据的最大值
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#define UART1_TXSIZE 1024 //一帧发送数据的最大值
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#define MAX_SIZE 1024
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#define MODBUS_UART uart1 //将串口改成相应的变量即可，例如用到UART1，此处改为uart1
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#define MODBUS_HUART huart1 //将串口改成相应的变量即可，例如用到UART1，此处改为huart1
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#define MODBUS_HTIM htim3 //将串口改成相应的变量即可，例如用到UART1，此处改为huart1
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typedef enum
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{
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MB_EX_NONE = 0x00,
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MB_EX_ILLEGAL_FUNCTION = 0x01,
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MB_EX_ILLEGAL_DATA_ADDRESS = 0x02,
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MB_EX_ILLEGAL_DATA_VALUE = 0x03,
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MB_EX_SLAVE_DEVICE_FAILURE = 0x04,
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MB_EX_ACKNOWLEDGE = 0x05,
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MB_EX_SLAVE_BUSY = 0x06,
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MB_EX_MEMORY_PARITY_ERROR = 0x08,
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MB_EX_GATEWAY_PATH_FAILED = 0x0A,
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MB_EX_GATEWAY_TGT_FAILED = 0x0B
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} eMBException;
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typedef union var_reg
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{
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uint16_t SamData [MAX_INPUT_REG_NUM]; // 采样数据
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uint16_t InputReg[MAX_INPUT_REG_NUM]; // Reg 与 SamData
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}Var_Reg;
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typedef struct
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{
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uint8_t *rx_buf; //接收缓冲数组
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uint16_t rx_buf_cnt; //接收缓冲计数值
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uint16_t rx_size; //接收数据大小
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uint8_t rx_flag; //接收完成标志位
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uint8_t *tx_buf; //发送缓冲数组
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uint16_t tx_buf_cnt; //发送缓冲计数值
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uint16_t tx_size; //实际发送数据大小
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}UART_BUF;
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extern UART_BUF uart1; //串口结构体实体
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extern uint8_t RxBuffer; //接收数据中间变量
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extern uint8_t CoilState[(MAX_COIL_NUM + 7) / 8];
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extern uint8_t DisState [(MAX_DIS_NUM + 7) / 8];
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extern uint16_t InputReg[MAX_INPUT_REG_NUM];
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extern uint16_t HoldReg[MAX_HOLD_REG_NUM];
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extern Var_Reg SamVarReg;
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void modbus_rtu_init(void);//RTU初始化
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void modbus_rx_cb(void);
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uint16_t ModbusCRC16(uint8_t *ptr, uint16_t len);
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void GetOneCoilVal(uint16_t wCoilAddr, uint8_t *pCoilVal);
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void GetOneDisInputVal(uint16_t wDisInputAddr, uint8_t *pDisInputVal);
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uint16_t GetHoldRegData(uint16_t RegAdd);
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uint16_t GetInputRegData(uint16_t RegAdd);
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void WriteHoldRegData(uint16_t wRegAddr, uint16_t RegData);
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void WriteOneCoilData(uint16_t wRegAddr, uint16_t RegData);
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void modbus_process_rtu(void);
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#endif
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