stm32basic/modbus/modbus_block_host.cpp

#include "modbus_block_host.hpp"

#include "modbus_basic.hpp"
using namespace iflytop;
#define PRV_DEBUG 0
ModbusBlockHost::ModbusBlockHost() {}
ModbusBlockHost::~ModbusBlockHost() {}

extern "C" {
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {}
}

void ModbusBlockHost::initialize(UART_HandleTypeDef *huart) {
  this->huart = huart;
  m_modbus_lock.init();
}
void ModbusBlockHost::cleanRxBuff() {  //
  HAL_StatusTypeDef status;
  do {
    status = HAL_UART_Receive(huart, rxbuff, 1, 1);
  } while (status == HAL_OK);
}

void ModbusBlockHost::uarttx(uint8_t *buff, size_t len) {
  ZASSERT(len < sizeof(txbuff));
#if PRV_DEBUG
  printf("uart_tx:\n");
  for (size_t i = 0; i < len; i++) {
    printf("%02x ", buff[i]);
  }
  printf("\n");
#endif
  // HAL_UART_Transmit(huart, buff, len, 1000);
  HAL_UART_DMAStop(huart);
  HAL_StatusTypeDef ret = HAL_UART_Transmit_DMA(huart, buff, len);
  ZASSERT(ret == HAL_OK);

  // 等待DMA传输完成
  while (true) {
    if (HAL_UART_GetState(huart) == HAL_UART_STATE_READY) break;
  }
  return;
}
bool ModbusBlockHost::uartrx(uint8_t *buff, size_t len, int overtimems) {
  HAL_StatusTypeDef status;
  ZASSERT(len < sizeof(rxbuff));

  status = HAL_UART_Receive_DMA(huart, buff, len);

  if (status != HAL_OK) {
    return false;
  }

  for (size_t i = 0; i < overtimems; i++) {
    osDelay(3);
    if (HAL_UART_GetState(huart) == HAL_UART_STATE_READY) {
#if PRV_DEBUG
      if (status == HAL_OK) {
        printf("uart_rx:");
        for (size_t i = 0; i < len; i++) {
          printf("%02x ", buff[i]);
        }
        printf("\n");
      }
#endif
      return true;
    }
  }
#if PRV_DEBUG
  printf("uart_rx timeout\n");
#endif

  HAL_UART_Abort(huart);
  HAL_UART_DMAStop(huart);

  return false;
}

bool ModbusBlockHost::readReg03(uint8_t slaveAddr, uint16_t regAddr, uint16_t *regVal, int overtimems) {
  zlock_guard lck(m_modbus_lock);

  txbuff[0] = slaveAddr;
  txbuff[1] = 0x03;
  txbuff[2] = regAddr >> 8;
  txbuff[3] = regAddr & 0xff;
  txbuff[4] = 0x00;
  txbuff[5] = 0x01;
  modbus_pack_crc_to_packet(txbuff, 6 + 2);

  cleanRxBuff();

  uarttx(txbuff, 6 + 2);

  bool status;
  status = uartrx(rxbuff, 5 + 2, overtimems);

  if (!status) {
    return false;
  }

  if (!modbus_checkcrc16(rxbuff, 7)) {
    ZLOGE("ModbusBlockHost", "crc error");
    return false;
  }

  *regVal = (((uint16_t)(rxbuff[3])) << 8) | rxbuff[4];

  return true;
}

// static const char *hex2str(uint8_t *buff, size_t len) {
//   static char str[100];
//   for (size_t i = 0; i < len; i++) {
//     sprintf(str + i * 2, "%02x", buff[i]);
//   }
//   return str;
// }

bool ModbusBlockHost::readReg03Muti(uint8_t slaveAddr, uint16_t regAddr, uint16_t *regVal, int regNum, int overtimems) {
  zlock_guard lck(m_modbus_lock);

  txbuff[0] = slaveAddr;
  txbuff[1] = 0x03;
  txbuff[2] = regAddr >> 8;
  txbuff[3] = regAddr & 0xff;
  txbuff[4] = 0x00;
  txbuff[5] = regNum;
  modbus_pack_crc_to_packet(txbuff, 6 + 2);

  cleanRxBuff();

  uarttx(txbuff, 6 + 2);

  bool status;
  // 14*2 = 28
  status = uartrx(rxbuff, 5 + regNum * 2, overtimems);
  if (!status) {
    return false;
  }

  if (!modbus_checkcrc16(rxbuff, 5 + regNum * 2)) {
    ZLOGE("ModbusBlockHost", "crc error");
    return false;
  }
  for (int i = 0; i < regNum; i++) {
    regVal[i] = ((uint16_t)(rxbuff[3 + i * 2]) << 8) | rxbuff[4 + i * 2];
    // int16_t val = regVal[i] ;
    // ZLOGI("RX", "%d", val);
  }

  return true;
}

bool ModbusBlockHost::writeReg06(uint8_t slaveAddr, uint16_t regAddr, uint16_t regVal, int overtimems) {
  zlock_guard lck(m_modbus_lock);

  txbuff[0] = slaveAddr;
  txbuff[1] = 0x06;
  txbuff[2] = regAddr >> 8;
  txbuff[3] = regAddr & 0xff;
  txbuff[4] = regVal >> 8;
  txbuff[5] = regVal & 0xff;
  modbus_pack_crc_to_packet(txbuff, 6 + 2);

  cleanRxBuff();

  uarttx(txbuff, 6 + 2);

  bool status;
  status = uartrx(rxbuff, 8, overtimems);

  if (status && modbus_checkcrc16(rxbuff, 8)) {
    return true;
  }
  return false;
}
bool ModbusBlockHost::writeReg10(uint8_t slaveAddr, uint16_t regAddr, uint16_t regVal, int overtimems) {
  zlock_guard lck(m_modbus_lock);

  txbuff[0] = slaveAddr;
  txbuff[1] = 0x10;
  txbuff[2] = regAddr >> 8;
  txbuff[3] = regAddr & 0xff;
  txbuff[4] = 0x00;
  txbuff[5] = 0x01;
  txbuff[6] = 0x02;  // 字节数
  txbuff[7] = regVal >> 8;
  txbuff[8] = regVal & 0xff;
  modbus_pack_crc_to_packet(txbuff, 9 + 2);

  cleanRxBuff();

  uarttx(txbuff, 9 + 2);

  bool status;
  status = uartrx(rxbuff, 8, overtimems);

  if (status && modbus_checkcrc16(rxbuff, 8)) {
    return true;
  }
  return false;
}