usart DMA 发送AT命令

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楼主 | 2018-7-15 14:42 | 只看该作者回帖奖励

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USART, AT命令, DMA, ZigBee, igbee

大神们发送AT命令的时候+++可以收到回复ok  但是发送AT+PID? 这种就不行帮帮看看

static at_cmd s_zigbee_init_cmd [] = {

   {&quot;+++&quot;,&quot;OK&quot;,3, 2},
   {&quot;+++&quot;,&quot;OK&quot;,3, 2},
   {&quot;+++&quot;,&quot;OK&quot;,3, 2},
   {&quot;+++&quot;,&quot;OK&quot;,3, 2},
   {&quot;AT+PRF=0&quot;,&quot;OK&quot;,8,2},
   {&quot;AT+VER&quot;,&quot;OK&quot;,6, 2},
};

void zigbee_task(void *p_arg)
{
   zigbee_msg_st ltv_Msg;
   unsigned char lcv_BuffIndex;
   unsigned char *lcp_RecvPtr;
   unsigned char *lcp_SendPtr;
   unsigned char i;

   uint8_t atcmdindex = 0;
   /*zigbee初始化*/
   zigbee_usart1_init();

   /*创建消息队列*/
   gtv_ZigbeeTaskMsgQueueHandle = xQueueCreate(10, sizeof(zigbee_msg_st));
   configASSERT(gtv_ZigbeeTaskMsgQueueHandle != NULL);

   while(1) {
      lcv_BuffIndex = bsp_get_usart1_send_buff_index();
      if(lcv_BuffIndex) {
         lcp_SendPtr = gcav_Usart1DmaTxBuffer[1];
      } else {
         lcp_SendPtr = gcav_Usart1DmaTxBuffer[0];
      }

      for(i=0; i<s_zigbee_init_cmd[atcmdindex].mcv_AtCmdLen; i++) {
         /**拷贝数据**/
         lcp_SendPtr = s_zigbee_init_cmd[atcmdindex].mcv_AtCmdBuff;
      }
      /**发送函数**/
      usart1_send_buffer(NULL,s_zigbee_init_cmd[atcmdindex].mcv_AtCmdLen);

      /*等待串口消息*/
      xQueueReceive(gtv_ZigbeeTaskMsgQueueHandle, &ltv_Msg, portMAX_DELAY);

      if(ltv_Msg.mcv_RxIndex) {
         lcp_RecvPtr = gcav_Usart1DmaRxBuffer[1];
      } else {
         lcp_RecvPtr = gcav_Usart1DmaRxBuffer[0];
      }

      do {
         if((lcp_RecvPtr[0] == 0x0D) && (lcp_RecvPtr[1] == 0x0A)) {
               lcp_RecvPtr = &lcp_RecvPtr[2];
         } else {
               break;
         }
      } while(1);
      /*接收和结构体比较*/
      for(i=0; i<s_zigbee_init_cmd[atcmdindex].mcv_RecvLen; i++) {
         if(lcp_RecvPtr != s_zigbee_init_cmd[atcmdindex].mcv_RespBuff) {
               break;
         }
      }

      if(i >= s_zigbee_init_cmd[atcmdindex].mcv_RecvLen) {
         if(atcmdindex+1 < sizeof(s_zigbee_init_cmd)/sizeof(at_cmd)) {
               atcmdindex++;
         } else {
               atcmdindex = 0;//重新发送
         }
      } else {

      }
   }
}

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usart DMA 发送AT命令

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