stm32f0_freemodbus补充文件

/**********************************freemodbus移植文件************************** 1、 这个文件依赖于uart.c文件，作为uart.c文件的补充，当不使用modbus时，单独使用 uart.c文件就可以完成串口通信 2、 当使用modbus时，使用此文件中的modbusInit初始化函数初始化串口 3、 寄存器在这个文件里定义，如果要在主程序里使用，则要在主程序里extern引用 *******************************************************************************/ /* Includes ------------------------------------------------------------------*/ #include "modbus.h" #include "uart.h" #include "mb.h" #include "mbport.h" #include "mbutils.h" TIM_HandleTypeDef TimHandle; extern UART_HandleTypeDef UartHandle; extern void prvvUARTTxReadyISR(void); extern void prvvUARTRxISR(void); extern void TIMERExpiredISR(void); #define TYPECOIL 1 #define TYPEREG 2 //Modbus更新标志，用来被其他程序使用 uint8_t flagUpdate = 0; uint8_t regType = 0; //1,写的线圈，2，写的保持寄存器 uint8_t regIndex = 0; //修改的寄存器的索引 uint8_t regNum = 0; //修改的寄存器的数量 eMBErrorCode eStatus; //Modbus错误状态相关变量 eMBParity mbparity = MB_PAR_NONE; //modbus初始化用的parity //线圈输出控制寄存器 #define REG_COILS_START 1000 #define REG_COILS_SIZE 8 //这里代表的是8个点，所以只需要/8个寄存器 unsigned char ucRegCoilsBuf[REG_COILS_SIZE/8] = {0x00}; //离散输入 #define REG_DISC_START 1000 #define REG_DISC_SIZE 8 //这里代表的是8个点，所以只需要/8个寄存器 static unsigned char ucRegDiscBuf[REG_DISC_SIZE / 8] = {0x08}; //MSB是第8号，LSB是IN0 //输入寄存器变量 #define REG_INPUT_START 1000 //输入寄存器起始地址 #define REG_INPUT_NREGS 2 //输入寄存器总长度 uint16_t usRegInputStart = REG_INPUT_START; //输入寄存器变量 uint16_t usRegInputBuf[REG_INPUT_NREGS] = {0x0100,0x0100}; //硬件版本1.00，软件版本1.00 //保持寄存器变量 #define REG_HOLDING_START 1000 //保持寄存器起始地址 #define REG_HOLDING_NREGS 16 //保持寄存器总长度 uint16_t usRegHoldingStart = REG_HOLDING_START; uint16_t usRegHoldingBuf[REG_HOLDING_NREGS] = {0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, 0x0000,0x0000,0x0000,0x1111,0x2222,0x3333,0x4444,0x5555,0x6666}; ///-----------------modbus配置函数-------------------------------------------- //描述:配置串口为中断模式 void ModbusInit(uint8_t devaddr,uint32_t baudrate,uint32_t datlen,uint32_t parity) { //初始化串口 UART_Init_para(&UartHandle,baudrate,datlen,parity); Modbus_TR_Init(); Modbus_Rx(); //初始化Modbus，参数分别是：模式、从机地址、端口、波特率、校验模式 eStatus = eMBInit( MB_RTU, devaddr, 0, baudrate, mbparity ); /* 使能Modbus堆栈 */ eStatus = eMBEnable(); if(eStatus != MB_ENOERR) { //出错了 printf("err"); } } ///--------------------------------读输入寄存器------------------------------------------------------------ //返回的错误代码的取值范围 //MB_ENOERR, /*!< no error. */ //MB_ENOREG, /*!< illegal register address. */ //MB_EINVAL, /*!< illegal argument. */ ///-------------------------------------------------------------------------------------------------------- eMBErrorCode eMBRegInputCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs ) { eMBErrorCode eStatus = MB_ENOERR; int iRegIndex; //判断请求的起始地址 && 起始地址加上请求寄存器数是否合法 if( ( usAddress >= REG_INPUT_START )&& ( usAddress + usNRegs <= REG_INPUT_START + REG_INPUT_NREGS ) ) { //计算从第几个寄存器开始读取 iRegIndex = ( int )( usAddress - usRegInputStart ); //返回读取的寄存器的内容，先返高字节，再返低字节 while( usNRegs > 0 ) { *pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] >> 8 ); *pucRegBuffer++ = ( unsigned char )( usRegInputBuf[iRegIndex] & 0xFF ); iRegIndex++; usNRegs--; } } else { eStatus = MB_ENOREG; } return eStatus; } ///--------------------------------读写保持寄存器------------------------------------------------------------ //eMode的取值 //MB_REG_READ, /*!< Read register values and pass to protocol stack. */ //MB_REG_WRITE /*!< Update register values. */ ///---------------------------------------------------------------------------------------------------------- eMBErrorCode eMBRegHoldingCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNRegs, eMBRegisterMode eMode ) { eMBErrorCode eStatus = MB_ENOERR; int iRegIndex; //判断地址是否合法 if( ( usAddress >= REG_HOLDING_START )&& ( usAddress + usNRegs <= REG_HOLDING_START + REG_HOLDING_NREGS ) ) { //计算从第几个寄存器开始读取 iRegIndex = ( int )( usAddress - usRegHoldingStart ); //区分是读操作还是写操作 switch (eMode) { //读操作 case MB_REG_READ: { //返回读取的寄存器的内容，先返高字节，再返低字节 while( usNRegs > 0 ) { *pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] >> 8 ); *pucRegBuffer++ = ( unsigned char )( usRegHoldingBuf[iRegIndex] & 0xFF ); iRegIndex++; usNRegs--; } break; } //写操作 case MB_REG_WRITE: { //------------------------------------------------------- //标记标志，提供给其他程序使用 flagUpdate = 1; regType = TYPEREG; //记录索引，提供给其他程序使用 regIndex = iRegIndex; regNum = usNRegs; //------------------------------------------------------- //先写入高字节，再写入低字节 while( usNRegs > 0 ) { usRegHoldingBuf[iRegIndex] = *pucRegBuffer++ << 8; usRegHoldingBuf[iRegIndex] |= *pucRegBuffer++; iRegIndex++; usNRegs--; } break; } } } else { eStatus = MB_ENOREG; } //返回错误代码 return eStatus; } ///--------------------------------读写线圈----------------------------------------------------------------- //线圈，读写，单个比特 ///--------------------------------------------------------------------------------------------------------- eMBErrorCode eMBRegCoilsCB( UCHAR * pucRegBuffer, USHORT usAddress, USHORT usNCoils, eMBRegisterMode eMode ) { eMBErrorCode eStatus = MB_ENOERR; short iNCoils = ( short )usNCoils; unsigned short usBitOffset; /* Check if we have registers mapped at this block. */ if( ( usAddress >= REG_COILS_START ) && ( usAddress + usNCoils <= REG_COILS_START + REG_COILS_SIZE ) ) { usBitOffset = ( unsigned short )( usAddress - REG_COILS_START ); switch ( eMode ) { /* Read current values and pass to protocol stack. */ case MB_REG_READ: while( iNCoils > 0 ) { *pucRegBuffer++ = xMBUtilGetBits( ucRegCoilsBuf, usBitOffset, ( unsigned char )( iNCoils > 8 ? 8 : iNCoils ) ); iNCoils -= 8; usBitOffset += 8; } break; /* Update current register values. */ case MB_REG_WRITE: //------------------------------------------------------- //标记标志 flagUpdate = 1; regType = TYPECOIL; //------------------------------------------------------- while( iNCoils > 0 ) { xMBUtilSetBits( ucRegCoilsBuf, usBitOffset, ( unsigned char )( iNCoils > 8 ? 8 : iNCoils ), *pucRegBuffer++ ); iNCoils -= 8; } break; } } else { eStatus = MB_ENOREG; } return eStatus; } ///-------