755 lines
25 KiB
C
755 lines
25 KiB
C
#include "Modbus.h"
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#include "string.h"
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#define MODBUS_UART usart3 // 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 USART3 // 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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uint8_t CoilState[(MAX_DIS_NUM + 7) / 8] = {0x00}; // 线圈寄存器
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uint8_t DisState[(MAX_DIS_NUM + 7) / 8] = {0x00}; // 离散量寄存器
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uint16_t InputReg[MAX_INPUT_REG_NUM] = {0x0000, 0x0000}; // 输入寄存器
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uint16_t HoldReg[MAX_HOLD_REG_NUM] = {0x0000, 0x0000}; // 保持寄存器
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Var_Reg SamVarReg;
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void MODBUS_ERRFunction(uint8_t uCmdCode, uint8_t uErrorCode);
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/*******************************************************************************
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函数名称 ： ModbusCRC16
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功 能 ： CRC校验
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参 数 ： ptr--校验数组指针 len--校验数据长度
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返 回 值 ： CRC校验码，双字节
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*******************************************************************************/
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uint16_t ModbusCRC16(uint8_t *ptr, uint16_t len)
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{
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uint8_t i;
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uint16_t crc = ~0x00;
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if ((ptr == NULL) || (len == 0xFFFF))
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return crc;
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while (len--)
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{
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crc ^= *ptr++;
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for (i = 0; i < 8; i++)
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{
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if (crc & 0x01)
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{
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crc >>= 1;
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crc ^= 0xA001;
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}
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else
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{
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crc >>= 1;
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}
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}
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}
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return (crc);
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}
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void GetOneCoilVal(uint16_t wCoilAddr, uint8_t *pCoilVal)
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{
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uint8_t uVal;
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uVal = CoilState[(wCoilAddr - COIL_ADD_MIN) / 8];
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if (uVal & (1 << ((wCoilAddr - COIL_ADD_MIN) % 8)))
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{
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*pCoilVal = 0x01;
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}
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else
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{
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*pCoilVal = 0x00;
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}
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}
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/*******************************************************************************
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函数名称 ： ReadCoilStateFUNC
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功 能 ： 功能码:0x01,读取线圈
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参 数 ： 无
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返 回 值 ： 无
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*发送:[硬件地址][01][线圈起始地址高][线圈起始地址低][线圈数量高][线圈数量低][CRC低][CRC高]
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*返回:[硬件地址][01][字节长度][线圈值][线圈值][线圈值][CRC低][CRC高]
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*******************************************************************************/
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void ReadCoilStateFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
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{
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uint16_t wCoilStartAddr, wCoilNum, wTotalCoilNum, CRC16Temp;
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uint8_t i, k, uCommIndexNum = 0, uByteCount, uCoilVal, uErrorCode, uExit = 0;
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uint8_t upTxdbuf[50] = {0};
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wCoilStartAddr = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取线圈起始地址
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wCoilNum = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取线圈个数
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if ((wCoilNum >= 0x0001) || (wCoilNum <= MAX_COIL_NUM))
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{
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if (((wCoilStartAddr <= COIL_ADD_MAX)) &&
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(wCoilNum + wCoilStartAddr <= COIL_ADD_MAX + 1)) //(wCoilStartAddr >= COIL_ADD_MIN) &&
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{
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uByteCount = (wCoilNum + 7) / 8; // 返回数据字节个数
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upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
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upTxdbuf[uCommIndexNum++] = ReadCoilState;
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upTxdbuf[uCommIndexNum++] = uByteCount;
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wTotalCoilNum = 0;
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for (k = 0; k < uByteCount; k++)
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{
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upTxdbuf[uCommIndexNum] = 0;
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for (i = 0; i < 8; i++)
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{
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GetOneCoilVal(wCoilStartAddr + wTotalCoilNum, &uCoilVal);
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upTxdbuf[uCommIndexNum] |= uCoilVal << i;
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wTotalCoilNum++;
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if (wTotalCoilNum >= wCoilNum)
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{
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uExit = 1;
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break;
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}
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}
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uCommIndexNum++;
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if (uExit == 1)
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{
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break;
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}
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}
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CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8);
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MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
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memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
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modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
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return;
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
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}
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_VALUE;
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}
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MODBUS_ERRFunction(ReadCoilState, uErrorCode);
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return;
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}
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void GetOneDisInputVal(uint16_t wDisInputAddr, uint8_t *pDisInputVal)
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{
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uint8_t uVal;
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uVal = DisState[(wDisInputAddr - DIS_ADD_MIN) / 8];
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if (uVal & (1 << ((wDisInputAddr - DIS_ADD_MIN) % 8)))
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{
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*pDisInputVal = 0x01;
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}
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else
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{
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*pDisInputVal = 0x00;
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}
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}
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/*******************************************************************************
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函数名称 ： ReadDisInputStateFUNC
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功 能 ： 功能码:0x02,读取离散量
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参 数 ： 无
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返 回 值 ： 无
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*发送:[硬件地址][02][离散量起始地址高][离散量起始地址低][离散量数量高][离散量数量低][CRC低][CRC高]
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*返回:[硬件地址][02][字节长度][离散量值][离散量值][离散量值][CRC低][CRC高]
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*******************************************************************************/
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void ReadDisInputStateFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
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{
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uint16_t wDisStartAddr, wDisNum, wTotalDisNum, CRC16Temp;
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uint8_t i, k, uCommIndexNum = 0, uByteCount, uDisVal, uErrorCode, uExit = 0;
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uint8_t upTxdbuf[50];
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wDisStartAddr = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取离散量起始地址
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wDisNum = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取离散量个数
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if ((wDisNum >= 0x0001) || (wDisNum <= MAX_DIS_NUM))
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{
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if (((wDisStartAddr <= DIS_ADD_MAX)) &&
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(wDisNum + wDisStartAddr <= DIS_ADD_MAX + 1)) //(wDisStartAddr >= DIS_ADD_MIN) &&
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{
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uByteCount = (wDisNum + 7) / 8; // 返回数据字节个数
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upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
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upTxdbuf[uCommIndexNum++] = ReadDisInputState;
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upTxdbuf[uCommIndexNum++] = uByteCount;
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wTotalDisNum = 0;
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for (k = 0; k < uByteCount; k++)
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{
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upTxdbuf[uCommIndexNum] = 0;
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for (i = 0; i < 8; i++)
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{
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GetOneDisInputVal(wDisStartAddr + wTotalDisNum, &uDisVal);
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upTxdbuf[uCommIndexNum] |= uDisVal << i;
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wTotalDisNum++;
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if (wTotalDisNum >= wDisNum)
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{
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uExit = 1;
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break;
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}
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}
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uCommIndexNum++;
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if (uExit == 1)
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{
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break;
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}
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}
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CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8);
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MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
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memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
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modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
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return;
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
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}
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_VALUE;
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}
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MODBUS_ERRFunction(ReadDisInputState, uErrorCode);
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return;
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}
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/*******************************************************************************
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函数名称 ： GetHoldRegData
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功 能 ： 获取RegAdd的数据
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参 数 ： u16 RegAdd
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返 回 值 ： 两字节寄存器数据
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*******************************************************************************/
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uint16_t GetHoldRegData(uint16_t RegAdd)
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{
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int16_t wRegValue;
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wRegValue = HoldReg[RegAdd - HOLD_REG_ADD_MIN];
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return wRegValue;
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}
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/*******************************************************************************
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函数名称 ： ReadHoldRegFUNC
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功 能 ： 功能码:0x03,读取保持寄存器
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参 数 ： 无
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返 回 值 ： 无
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*发送:[硬件地址][03][起始地址高][起始地址低][总寄存器数高][总寄存器数低][CRC低][CRC高]
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*返回:[硬件地址][03][字节数][寄存器0高][寄存器0低][寄存器1高][寄存器1低][寄存器n高][寄存器n低][CRC低][CRC高]
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*******************************************************************************/
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void ReadHoldRegFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
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{
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uint16_t wRegStartAdd, wRegLen, i, wRegValue, CRC16Temp;
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uint8_t uErrorCode, uCommIndexNum = 0;
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uint8_t upTxdbuf[50];
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if (upRxdbuf == NULL)
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return;
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wRegStartAdd = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取寄存器起始地址
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wRegLen = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取读取寄存器长度
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if ((wRegLen >= 0x01) && (wRegLen <= MAX_HOLD_REG_NUM))
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{
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if (((wRegStartAdd <= HOLD_REG_ADD_MAX)) &&
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(((wRegStartAdd + wRegLen) >= HOLD_REG_ADD_MIN) && ((wRegStartAdd + wRegLen) <= HOLD_REG_ADD_MAX + 1))) //(wRegStartAdd >= HOLD_REG_ADD_MIN) &&
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{
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upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
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upTxdbuf[uCommIndexNum++] = ReadHoldReg;
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upTxdbuf[uCommIndexNum++] = wRegLen * 2;
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for (i = 0; i < wRegLen; i++)
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{
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// 获取16位数据并返回
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wRegValue = GetHoldRegData(wRegStartAdd + i);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(wRegValue >> 8);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(wRegValue & 0xFF);
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}
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CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF); // crc16低字节在前
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8); // crc16高字节在后
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MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
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memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
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modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
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return;
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
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}
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_VALUE;
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}
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MODBUS_ERRFunction(ReadHoldReg, uErrorCode);
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return;
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}
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/*******************************************************************************
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函数名称 ： GetInputRegData
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功 能 ： 获取RegAdd的数据
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参 数 ： u16 RegAdd
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返 回 值 ： 两字节寄存器数据
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*******************************************************************************/
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uint16_t GetInputRegData(uint16_t RegAdd)
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{
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int16_t wRegValue;
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wRegValue = InputReg[RegAdd - INPUT_REG_ADD_MIN];
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return wRegValue;
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}
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/*******************************************************************************
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函数名称 ： ReadInputRegFUNC
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功 能 ： 功能码:0x04,读取输入寄存器
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参 数 ： 无
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返 回 值 ： 无
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*发送:[硬件地址][04][起始地址高][起始地址低][总寄存器数高][总寄存器数低][ CRC低 ][ CRC高 ]
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*返回:[硬件地址][04][ 字节数 ][寄存器0高 ][ 寄存器0低 ][ 寄存器1高 ][ 寄存器1低 ][ 寄存器n高 ][ 寄存器n低 ][ CRC低 ][ CRC高 ]
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*******************************************************************************/
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void ReadInputRegFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
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{
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uint16_t wRegStartAdd, wRegLen, i, wRegValue, CRC16Temp;
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uint8_t uErrorCode, uCommIndexNum = 0;
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uint8_t upTxdbuf[50];
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if (upRxdbuf == NULL)
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return;
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wRegStartAdd = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取寄存器起始地址
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wRegLen = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取读取寄存器长度
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if ((wRegLen >= 0x01) && (wRegLen <= MAX_INPUT_REG_NUM))
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{
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if (((wRegStartAdd <= INPUT_REG_ADD_MAX)) &&
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((wRegStartAdd + wRegLen) <= INPUT_REG_ADD_MAX + 1)) //(wRegStartAdd >= INPUT_REG_ADD_MIN) &&
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{
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upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
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upTxdbuf[uCommIndexNum++] = ReadInputReg;
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upTxdbuf[uCommIndexNum++] = wRegLen * 2;
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for (i = 0; i < wRegLen; i++)
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{
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// 获取16位数据并返回
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wRegValue = GetInputRegData(wRegStartAdd + i);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(wRegValue >> 8);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(wRegValue & 0xFF);
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}
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CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF); // crc16低字节在前
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8); // crc16高字节在后
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MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
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memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
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modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
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return;
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
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}
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}
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else
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{
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uErrorCode = MB_EX_ILLEGAL_DATA_VALUE;
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}
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MODBUS_ERRFunction(ReadInputReg, uErrorCode);
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return;
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}
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/*******************************************************************************
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函数名称 : WriteHoldRegData
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功 能 : 保存写入的保持寄存器数据
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参 数 : u16 StartAdd
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返 回 值 : 无
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*******************************************************************************/
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void WriteHoldRegData(uint16_t wRegAddr, uint16_t RegData)
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{
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HoldReg[wRegAddr - HOLD_REG_ADD_MIN] = RegData;
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}
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/*******************************************************************************
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函数名称 ： WriteSingleRegFUNC
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功 能 ： 功能码:0x06 预设(写)单寄存器
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参 数 ： 无
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返 回 值 ： 无
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*发送:[硬件地址][06][寄存器地址高][寄存器地址低][寄存器值高][寄存器值低][CRC低][CRC高]
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*返回:[硬件地址][06][寄存器地址高][寄存器地址低][寄存器值高][寄存器值低][CRC低][CRC高]
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*******************************************************************************/
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void WriteSingleRegFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
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{
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uint16_t wRegAddr, wRegValue, CRC16Temp;
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uint8_t uCommIndexNum = 0, uErrorCode;
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uint8_t upTxdbuf[50];
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if (upRxdbuf == NULL)
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return;
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wRegAddr = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取寄存器地址
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wRegValue = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取数据
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if ((wRegAddr <= HOLD_REG_ADD_MAX)) //(wRegAddr >= HOLD_REG_ADD_MIN) &&
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{
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WriteHoldRegData(wRegAddr, wRegValue);
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upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
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upTxdbuf[uCommIndexNum++] = WriteSingleReg;
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memcpy(upTxdbuf + uCommIndexNum, upRxdbuf, 4);
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uCommIndexNum += 4;
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CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF); // crc16低字节在前
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upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8); // crc16高字节在后
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MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
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memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
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modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
|
||
}
|
||
|
||
MODBUS_ERRFunction(WriteSingleReg, uErrorCode);
|
||
return;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
函数名称 ： WriteMultiRegFUNC
|
||
功 能 ： 功能码:0x10 写多个保持寄存器
|
||
参 数 ： 无
|
||
返 回 值 ： 无
|
||
*******************************************************************************/
|
||
void WriteMultiRegFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
|
||
{
|
||
uint16_t i, wRegStartAdd, wRegNum, CRC16Temp, uErrorCode, wRegValue;
|
||
uint8_t uCommIndexNum = 0, uByteNum;
|
||
uint8_t upTxdbuf[50];
|
||
|
||
if (upRxdbuf == NULL)
|
||
return;
|
||
|
||
wRegStartAdd = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取寄存器地址
|
||
wRegNum = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取寄存器数量
|
||
uByteNum = upRxdbuf[4]; // 获取字节数
|
||
|
||
if ((wRegNum >= 0x01) && (wRegNum <= MAX_HOLD_REG_NUM) && (uByteNum == wRegNum * 2))
|
||
{
|
||
if (((wRegStartAdd <= HOLD_REG_ADD_MAX) &&
|
||
(wRegStartAdd + wRegNum <= HOLD_REG_ADD_MAX + 1))) //(wRegStartAdd >= HOLD_REG_ADD_MIN) &&
|
||
{
|
||
for (i = 0; i < wRegNum; i++)
|
||
{
|
||
wRegValue = MAKEWORD(upRxdbuf[6 + i * 2], upRxdbuf[5 + i * 2]);
|
||
WriteHoldRegData(wRegStartAdd + i, wRegValue);
|
||
}
|
||
|
||
upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
|
||
upTxdbuf[uCommIndexNum++] = WriteMultiReg;
|
||
memcpy(upTxdbuf + uCommIndexNum, upRxdbuf, 4);
|
||
uCommIndexNum += 4;
|
||
|
||
CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF);
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8);
|
||
|
||
MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
|
||
memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
|
||
modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
|
||
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
uErrorCode = MB_EX_ILLEGAL_DATA_VALUE;
|
||
}
|
||
|
||
MODBUS_ERRFunction(WriteMultiReg, uErrorCode);
|
||
return;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
函数名称 : WriteOneCoilData
|
||
功 能 : 保存写入的线圈寄存器数据
|
||
参 数 : u16 StartAdd
|
||
返 回 值 : 无
|
||
*******************************************************************************/
|
||
void WriteOneCoilData(uint16_t wRegAddr, uint16_t RegData)
|
||
{
|
||
if (RegData == 0xFF00)
|
||
{
|
||
CoilState[(wRegAddr - COIL_ADD_MIN) / 8] |= 1 << ((wRegAddr - COIL_ADD_MIN) % 8);
|
||
}
|
||
else if (RegData == 0x0000)
|
||
{
|
||
CoilState[(wRegAddr - COIL_ADD_MIN) / 8] &= ~(1 << ((wRegAddr - COIL_ADD_MIN) % 8));
|
||
}
|
||
}
|
||
/*******************************************************************************
|
||
函数名称 ： WriteSingleCoilFUNC
|
||
功 能 ： 功能码:0x05 写单个线圈寄存器
|
||
参 数 ： 无
|
||
返 回 值 ： 无
|
||
*******************************************************************************/
|
||
void WriteSingleCoilFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
|
||
{
|
||
uint16_t wCoilAddr, wCoilValue, CRC16Temp;
|
||
uint8_t uCommIndexNum = 0, uErrorCode;
|
||
uint8_t upTxdbuf[50];
|
||
|
||
wCoilAddr = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取线圈地址
|
||
wCoilValue = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取线圈数据
|
||
|
||
if ((wCoilValue == 0x0000) || (wCoilValue == 0xFF00))
|
||
{
|
||
if ((wCoilAddr <= COIL_ADD_MAX)) //(wCoilAddr >= DIS_ADD_MIN ) &&
|
||
{
|
||
WriteOneCoilData(wCoilAddr, wCoilValue);
|
||
|
||
upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
|
||
upTxdbuf[uCommIndexNum++] = WriteSingleCoil;
|
||
memcpy(upTxdbuf + uCommIndexNum, upRxdbuf, 4);
|
||
uCommIndexNum += 4;
|
||
|
||
CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF);
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8);
|
||
|
||
MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
|
||
memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
|
||
modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
|
||
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
uErrorCode = MB_EX_ILLEGAL_DATA_VALUE;
|
||
}
|
||
|
||
MODBUS_ERRFunction(WriteSingleCoil, uErrorCode);
|
||
return;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
函数名称 ： WriteMultiCoilFUNC
|
||
功 能 ： 功能码:0x0F,写多个线圈
|
||
参 数 ： 无
|
||
返 回 值 ： 无
|
||
*发送:[硬件地址][0F][起始地址高][起始地址低][线圈数量高][线圈数量低][字节数][线圈值][CRC低][CRC高]
|
||
*返回:[硬件地址][0F][起始地址高][起始地址低][线圈数量高][线圈数量低][CRC低][CRC高]
|
||
*******************************************************************************/
|
||
void WriteMultiCoilFUNC(uint8_t *upRxdbuf, uint16_t wRxdLen)
|
||
{
|
||
uint16_t wCoilStartAddr, wCoilNum, wCoilVal, wTotalCoilNum, CRC16Temp;
|
||
uint8_t i, k, uCommIndexNum = 0, uByteNum, uByteVal, uExit = 0, uErrorCode;
|
||
uint8_t upTxdbuf[50];
|
||
|
||
wCoilStartAddr = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); // 获取线圈地址
|
||
wCoilNum = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); // 获取线圈个数
|
||
uByteNum = upRxdbuf[4]; // 获取字节数
|
||
|
||
if ((wCoilNum >= 0x01) && (wCoilNum <= MAX_COIL_NUM) && (wCoilNum <= 8 * uByteNum))
|
||
{
|
||
if ((wCoilStartAddr <= COIL_ADD_MAX) &&
|
||
(wCoilStartAddr + wCoilNum <= COIL_ADD_MAX + 1)) //(wCoilStartAddr >= COIL_ADD_MIN) &&
|
||
{
|
||
wTotalCoilNum = 0;
|
||
for (k = 0; k < uByteNum; k++)
|
||
{
|
||
uByteVal = upRxdbuf[5 + k];
|
||
for (i = 0; i < 8; i++)
|
||
{
|
||
if (uByteVal & (1 << i))
|
||
wCoilVal = 0xFF00;
|
||
else
|
||
wCoilVal = 0x0000;
|
||
|
||
WriteOneCoilData(wCoilStartAddr + wTotalCoilNum, wCoilVal);
|
||
|
||
wTotalCoilNum++;
|
||
if (wTotalCoilNum >= wCoilNum)
|
||
{
|
||
uExit = 1;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (uExit == 1)
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
|
||
upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
|
||
upTxdbuf[uCommIndexNum++] = WriteMultiCoil;
|
||
memcpy(upTxdbuf + uCommIndexNum, upRxdbuf, 4);
|
||
uCommIndexNum += 4;
|
||
|
||
CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF);
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8);
|
||
|
||
MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
|
||
memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
|
||
modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
|
||
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
uErrorCode = MB_EX_ILLEGAL_DATA_ADDRESS;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
uErrorCode = MB_EX_ILLEGAL_DATA_VALUE;
|
||
}
|
||
|
||
MODBUS_ERRFunction(WriteMultiCoil, uErrorCode);
|
||
return;
|
||
}
|
||
|
||
/********
|
||
***********************************************************************
|
||
函数名称 : MODBUS_ERRFunction
|
||
功 能: 错误回应指令
|
||
参 数: 无
|
||
返 回 值: 无
|
||
异常功能码 = 功能码+0x80
|
||
*******************************************************************************/
|
||
void MODBUS_ERRFunction(uint8_t uCmdCode, uint8_t uErrorCode)
|
||
{
|
||
uint8_t uCommIndexNum = 0;
|
||
uint16_t CRC16Temp = 0;
|
||
uint8_t upTxdbuf[50];
|
||
|
||
upTxdbuf[uCommIndexNum++] = LOCAL_ADDRESS;
|
||
upTxdbuf[uCommIndexNum++] = uCmdCode | 0x80;
|
||
upTxdbuf[uCommIndexNum++] = uErrorCode;
|
||
|
||
CRC16Temp = ModbusCRC16(upTxdbuf, uCommIndexNum);
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp & 0xFF); // crc16低字节在前
|
||
upTxdbuf[uCommIndexNum++] = (uint8_t)(CRC16Temp >> 8);
|
||
|
||
MODBUS_UART.tx_size = (uCommIndexNum <= MODBUS_UART.tx_buf_cnt ? uCommIndexNum : MODBUS_UART.tx_buf_cnt);
|
||
memcpy(MODBUS_UART.tx_buf, upTxdbuf, MODBUS_UART.tx_size);
|
||
modbus_send(MODBUS_HUART, MODBUS_UART.tx_buf, MODBUS_UART.tx_size);
|
||
}
|
||
|
||
/*******************************************************************************
|
||
函数名称 ： Modbus_Analysis
|
||
功 能 ： CRC校验
|
||
参 数 ： ptr--校验数组指针 len--校验数据长度
|
||
返 回 值 ： CRC校验码，双字节
|
||
*******************************************************************************/
|
||
void Modbus_Analysis(uint8_t *upRxdbuf, uint16_t wRxdLen)
|
||
{
|
||
uint8_t uSlaveAdd, uCmdCode;
|
||
|
||
if ((upRxdbuf == NULL) || (wRxdLen < 2))
|
||
return;
|
||
|
||
uSlaveAdd = upRxdbuf[0];
|
||
uCmdCode = upRxdbuf[1];
|
||
|
||
// 从机地址为本机地址或者是广播帧
|
||
if ((uSlaveAdd == LOCAL_ADDRESS) || (uSlaveAdd == BROADCAST_ADDRESS))
|
||
{
|
||
switch (uCmdCode)
|
||
{
|
||
case ReadCoilState:
|
||
ReadCoilStateFUNC(upRxdbuf + 2, wRxdLen - 2); // 读线圈状态
|
||
break;
|
||
|
||
case ReadDisInputState:
|
||
ReadDisInputStateFUNC(upRxdbuf + 2, wRxdLen - 2); // 读离散输入状态
|
||
break;
|
||
|
||
case ReadHoldReg:
|
||
ReadHoldRegFUNC(upRxdbuf + 2, wRxdLen - 2); // 读取保持寄存器
|
||
break;
|
||
|
||
case ReadInputReg:
|
||
ReadInputRegFUNC(upRxdbuf + 2, wRxdLen - 2); // 读取输入寄存器
|
||
break;
|
||
|
||
case WriteSingleReg:
|
||
WriteSingleRegFUNC(upRxdbuf + 2, wRxdLen - 2); // 写单个寄存器
|
||
break;
|
||
|
||
case WriteMultiCoil:
|
||
WriteMultiCoilFUNC(upRxdbuf + 2, wRxdLen - 2); // 写多个线圈
|
||
break;
|
||
|
||
case WriteMultiReg:
|
||
WriteMultiRegFUNC(upRxdbuf + 2, wRxdLen - 2); // 写多个寄存器
|
||
break;
|
||
|
||
case WriteSingleCoil:
|
||
WriteSingleCoilFUNC(upRxdbuf + 2, wRxdLen - 2); // 写单个线圈
|
||
break;
|
||
|
||
default:
|
||
MODBUS_ERRFunction(upRxdbuf[1], 0x01); // 错误码处理
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
void Modbus_Process(void)
|
||
{
|
||
uint8_t *pFrame;
|
||
uint16_t wFrameLen = 0;
|
||
uint16_t wFrameCRC, wCalCRC;
|
||
|
||
pFrame = MODBUS_UART.rx_buf; // 接收数据起始地址
|
||
wFrameLen = MODBUS_UART.rx_size; // 接收数据长度
|
||
|
||
if (wFrameLen < 2)
|
||
return; // 数据长度不是有效值
|
||
|
||
// 获取接收数据帧中的校验和
|
||
wFrameCRC = MAKEWORD(pFrame[wFrameLen - 2], pFrame[wFrameLen - 1]);
|
||
// 计算接收到的数据的校验和
|
||
wCalCRC = ModbusCRC16(pFrame, wFrameLen - 2);
|
||
if (wFrameCRC != wCalCRC)
|
||
return;
|
||
|
||
Modbus_Analysis(MODBUS_UART.rx_buf, MODBUS_UART.rx_size); // 协议处理
|
||
}
|