653 lines
22 KiB
C
653 lines
22 KiB
C
#include "modbus.h"
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void modbus_errfunction_rtu(uint8_t uCmdCode, uint8_t uErrorCode);
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uint8_t uart1_rx_buf[UART1_RXSIZE]; //发送数据缓冲数组
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uint8_t uart1_tx_buf[UART1_TXSIZE]; //接收数据缓冲数据
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void modbus_rtu_init(UART_HandleTypeDef *huart,TIM_HandleTypeDef *htim)
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{
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if(huart->Instance == USART1)
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{
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MODBUS_UART.rx_buf = uart1_rx_buf; //接收数据变量初始化
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MODBUS_UART.rx_buf_cnt = 0;
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MODBUS_UART.rx_size = 0;
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MODBUS_UART.rx_flag = 0;
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MODBUS_UART.tx_buf = uart1_tx_buf; //发送数据变量初始化
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MODBUS_UART.tx_buf_cnt = UART1_TXSIZE;
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MODBUS_UART.tx_size = 0;
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HAL_UART_Receive_IT(huart, (uint8_t *)&RxBuffer, 1); //开启接收中断
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}
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if(htim == &MODBUS_HTIM)
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{
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__HAL_TIM_CLEAR_FLAG(htim, TIM_FLAG_UPDATE); //手动添加
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HAL_TIM_Base_Start_IT(htim);
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}
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}
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void modbus_rx_cb(void)
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{
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if(uart1.rx_buf_cnt >= UART1_RXSIZE-1) //接收数据量超限，错误
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{
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MODBUS_UART.rx_buf_cnt = 0;
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memset(MODBUS_UART.rx_buf, 0x00, sizeof(&MODBUS_UART.rx_buf));
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HAL_UART_Transmit(&MODBUS_HUART, (uint8_t *)"数据溢出", 10, 0xFFFF);
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}
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else //接收正常
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{
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uart1.rx_buf[MODBUS_UART.rx_buf_cnt++] = RxBuffer; //接收数据存储到rx_buf
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HAL_TIM_Base_Stop_IT(&MODBUS_HTIM);
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__HAL_TIM_SET_COUNTER(&MODBUS_HTIM, 0);
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HAL_TIM_Base_Start_IT(&MODBUS_HTIM); //将定时器7的计数值清零后重新计数
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}
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HAL_UART_Receive_IT(&MODBUS_HUART, (uint8_t *)&RxBuffer, 1);
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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 readcoilstate_rtu(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[MAX_SIZE] = {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_rtu(ReadCoilState, uErrorCode);
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return;
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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 readdisinputstate_rtu(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[MAX_SIZE];
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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_rtu(ReadDisInputState, uErrorCode);
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return;
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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 readholdreg_rtu(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[MAX_SIZE];
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if(upRxdbuf == NULL) 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_rtu(ReadHoldReg, uErrorCode);
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return;
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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 readinputreg_rtu(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[MAX_SIZE];
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if(upRxdbuf == NULL) 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_rtu(ReadInputReg, uErrorCode);
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return;
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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 writesinglereg_rtu(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[MAX_SIZE];
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if(upRxdbuf == NULL) 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);
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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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modbus_errfunction_rtu(WriteSingleReg, uErrorCode);
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return;
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}
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/*******************************************************************************
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函数名称 ： WriteMultiRegFUNC
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功 能 ： 功能码:0x10 写多个保持寄存器
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参 数 ： 无
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返 回 值 ： 无
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*******************************************************************************/
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void writemultireg_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen)
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{
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uint16_t i, wRegStartAdd, wRegNum, CRC16Temp, uErrorCode, wRegValue;
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uint8_t uCommIndexNum = 0, uByteNum;
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uint8_t upTxdbuf[MAX_SIZE];
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if(upRxdbuf == NULL) return;
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wRegStartAdd = MAKEWORD(upRxdbuf[1], upRxdbuf[0]); //获取寄存器地址
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wRegNum = MAKEWORD(upRxdbuf[3], upRxdbuf[2]); //获取寄存器数量
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uByteNum = upRxdbuf[4]; //获取字节数
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if((wRegNum >= 0x01) && (wRegNum <= MAX_HOLD_REG_NUM) && (uByteNum == wRegNum * 2))
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{
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if(((wRegStartAdd <= HOLD_REG_ADD_MAX) &&
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(wRegStartAdd + wRegNum <= HOLD_REG_ADD_MAX + 1)))//(wRegStartAdd >= HOLD_REG_ADD_MIN) &&
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{
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for(i = 0; i < wRegNum; i++)
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{
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wRegValue = MAKEWORD(upRxdbuf[6 + i * 2], upRxdbuf[5 + i * 2]);
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WriteHoldRegData(wRegStartAdd + i, wRegValue);
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}
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upTxdbuf[uCommIndexNum ++] = LOCAL_ADDRESS;
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upTxdbuf[uCommIndexNum ++] = WriteMultiReg;
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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);
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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_rtu(WriteMultiReg, uErrorCode);
|
||
return;
|
||
}
|
||
|
||
/*******************************************************************************
|
||
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 writesinglecoil_rtu(uint8_t * upRxdbuf, uint16_t wRxdLen)
|
||
{
|
||
uint16_t wCoilAddr, wCoilValue, CRC16Temp;
|
||
uint8_t uCommIndexNum = 0, uErrorCode;
|
||
uint8_t upTxdbuf[MAX_SIZE];
|
||
|
||
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_rtu(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 writemulticoil_rtu(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[MAX_SIZE];
|
||
|
||
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_rtu(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_rtu(uint8_t uCmdCode, uint8_t uErrorCode)
|
||
{
|
||
uint8_t uCommIndexNum = 0;
|
||
uint16_t CRC16Temp = 0;
|
||
uint8_t upTxdbuf[MAX_SIZE];
|
||
|
||
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_rtu(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:
|
||
readcoilstate_rtu(upRxdbuf + 2, wRxdLen - 2); // 读线圈状态
|
||
break;
|
||
|
||
case ReadDisInputState:
|
||
readdisinputstate_rtu(upRxdbuf + 2, wRxdLen - 2); // 读离散输入状态
|
||
break;
|
||
|
||
case ReadHoldReg:
|
||
readholdreg_rtu(upRxdbuf + 2, wRxdLen - 2); // 读取保持寄存器
|
||
break;
|
||
|
||
case ReadInputReg:
|
||
readinputreg_rtu(upRxdbuf + 2, wRxdLen - 2); // 读取输入寄存器
|
||
break;
|
||
|
||
case WriteSingleReg:
|
||
writesinglereg_rtu(upRxdbuf + 2, wRxdLen - 2); // 写单个寄存器
|
||
break;
|
||
|
||
case WriteMultiCoil:
|
||
writemulticoil_rtu(upRxdbuf + 2, wRxdLen - 2); // 写多个线圈
|
||
break;
|
||
|
||
case WriteMultiReg:
|
||
writemultireg_rtu(upRxdbuf + 2, wRxdLen - 2); // 写多个寄存器
|
||
break;
|
||
|
||
case WriteSingleCoil:
|
||
writesinglecoil_rtu(upRxdbuf + 2, wRxdLen - 2); // 写单个线圈
|
||
break;
|
||
|
||
default:
|
||
modbus_errfunction_rtu(upRxdbuf[1], 0x01); // 错误码处理
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
void modbus_process_rtu(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_rtu(MODBUS_UART.rx_buf, MODBUS_UART.rx_size);// 协议处理
|
||
}
|
||
|
||
|