[参考译文] BQ79616EVM-021：BQ79616 EVM：在 UART 上未接收到任何消息

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1220257/bq79616evm-021-bq79616-evm-not-receiving-any-message-on-uart

我有一块 bq79616EVM 板、我正在尝试通过 UART 将其与微控制器连接。

我遵循数据表中给出的步骤如下：

首先、发送2.5ms 的唤醒脉冲、成功地唤醒电路板。

电流消耗略有增加、板载 LED 亮起。

我将发送自动寻址命令、最后等待电路板的响应。 问题是、我没有从电路板获得任何响应。

  /* Initialize for UART_PAL */
  UART_Init(&uart_instance, UART_PAL_CONFIG);

  uint8_t cmd[] = {0xD0, 0x03, 0x4c, 0x00, 0xFC, 0x24};

  uint8_t cmdSetAutoAdd[] = {0xD0, 0x03, 0x09, 0x01, 0x0F, 0x74};

  uint8_t cmdSetAdd[] = {0xD0, 0x03, 0x06, 0x00, 0xCB, 0x44};

  uint8_t cmdSetStack[] = {0xD0, 0x03, 0x08, 0x02, 0x4e, 0xe5};

  uint8_t cmdSetBase[] = {0xD0, 0x03, 0x08, 0x01, 0x0e, 0xe4};

//  uint8_t cmd1[] = {0xC0, 0x05, 0x68, 0x10, 0x02, 0x29};
  uint8_t cmd1[] = {0xC0, 0x03, 0x4c, 0x1, 0x39, 0x24};

  UART_SendDataBlocking(&uart_instance, (uint8_t *) cmd, 6, TIMEOUT);
  while(UART_GetTransmitStatus(&uart_instance, &bytesRemaining)== STATUS_BUSY);

  UART_SendDataBlocking(&uart_instance, (uint8_t *) cmdSetAutoAdd, 6, TIMEOUT);
   while(UART_GetTransmitStatus(&uart_instance, &bytesRemaining)== STATUS_BUSY);

   UART_SendDataBlocking(&uart_instance, (uint8_t *) cmdSetAdd, 6, TIMEOUT);
    while(UART_GetTransmitStatus(&uart_instance, &bytesRemaining)== STATUS_BUSY);

    UART_SendDataBlocking(&uart_instance, (uint8_t *) cmdSetStack, 6, TIMEOUT);
     while(UART_GetTransmitStatus(&uart_instance, &bytesRemaining)== STATUS_BUSY);

     UART_SendDataBlocking(&uart_instance, (uint8_t *) cmdSetBase, 6, TIMEOUT);
      while(UART_GetTransmitStatus(&uart_instance, &bytesRemaining)== STATUS_BUSY);

  UART_SendDataBlocking(&uart_instance, (uint8_t *) cmd1, 6, TIMEOUT);
  while(UART_GetTransmitStatus(&uart_instance, &bytesRemaining)== STATUS_BUSY);


  while(UART_GetTransmitStatus(&uart_instance, &bytesRemaining)== STATUS_BUSY);
    /* Send a welcome message */
//  UART_SendDataBlocking(&uart_instance, (uint8_t *)welcomeMsg, strlen(welcomeMsg), TIMEOUT);

  /* Infinite loop:
   *     - Receive data from user
   *     - Echo the received data back
   */
  while(1)
  {
      /* Receive and store data byte by byte until new line character is received,
       * or the buffer becomes full (256 characters received)
       */
      UART_ReceiveData(&uart_instance, buffer, 1U);
      /* Wait for transfer to be completed */
      while(UART_GetReceiveStatus(&uart_instance, &bytesRemaining) == STATUS_BUSY);

    }

代码卡在 UART_GetReceiveStatus 处、我不接收来自 EVM 板的任何内容、为了安全起见、我使用终端软件测试了此代码、我可以看到波特率是1mbps 并且接收到的数据是正确的此外、我从终端发回数据、我在固件末端接收相同的数据。

我对固件部分是否缺少某些序列或数据包中存在 CRC 错误没有疑问。  

代码中是否缺少某些内容？  EVM 上的 LED 状态含义是什么？ 它处于激活模式右?