一种判断AT命令应答的技巧（原创） -

标题: 一种判断AT命令应答的技巧（原创） [打印本页]

作者: jizhongbiao 时间: 2020-1-3 16:36
标题: 一种判断AT命令应答的技巧（原创）
//串口中断服务函数
void UART5_IRQHandler(void)
{
unsigned char ch;
//接收中断
if ( USART_GetITStatus(UART5, USART_IT_RXNE) != RESET )
{
      USART_ClearITPendingBit(UART5, USART_IT_RXNE);

      ch = UART5->DR;
            switch (g_uart5_ctrl.recv_stau)
                     {
                        case PENETRATE_MODE: //当前是透传模式
                                    {
                                             PassThroughRecv(ch, &g_uart5_ctrl);
                                    }
                                    break ;
                        //以下分支均为命令响应判断
                              case WAIT_AT :
                                    {
                                             match_cmd_at(ch, &g_uart5_ctrl);
                                    }
                                    break ;
                              case WAIT_SETMODE:  //设置为sta
                                    {
                                             match_cmd_setmode(ch, &g_uart5_ctrl);
                                    }
                                    break ;
                              case WAIT_SETWIFI: //加入wifi
                                    {
                                             match_cmd_setwifi(ch, &g_uart5_ctrl);
                                    }
                                    break ;
                              case CHECK_IDADR:
                                    {
                                             match_cmd_check_ipadr(ch, &g_uart5_ctrl);
                                    }
                                    break;
                              case WAIT_SETTCPINFO: //链接tcp
                                    {
                                             match_cmd_settcpinfo(ch, &g_uart5_ctrl);
                                    }
                                    break ;
                              case WAIT_SETTCPMODE://设置透传
                                    {
                                             match_cmd_settcpmode(ch, &g_uart5_ctrl);
                                    }
                                    break ;
                              case WAIT_ANSTOPENETRATE: //等待进入透传数据命令结果
                                    {
                                             match_cmd_cipsend(ch, &g_uart5_ctrl);
                                    }
                                    break ;
                              #if 0  //直接硬复位
                              case WAIT_EXITTOPENETRATE: //退出透传
                                    {

                                    }
                                    break ;
                              case WAIT_GORST: //重启模块
                                    {

                                    }
                                    break ;
                              case WAIT_GORST:
                                    {

                                    }
                                    break ;
                              #endif
                              default :
                                    break ;
                     }
}

/* 空闲中断 */
      if ( USART_GetITStatus(UART5, USART_IT_IDLE) != RESET )
      {
         USART_ClearITPendingBit(UART5, USART_IT_IDLE);
            g_uart5_ctrl.send_flag = 0;
      }

/* 串口发送完成中断 */
      if ( USART_GetITStatus(UART5, USART_IT_TC) != RESET )
      {
         /* 清中断 */
            USART_ClearITPendingBit(UART5, USART_IT_TC);

            USART_ITConfig(USART1, USART_IT_TXE, DISABLE);

      /* 允许再次发送 */
            g_uart5_ctrl.send_flag = 0;

      }
}
//回传处理技巧
/********************************************
功能：set wifi命令响应判断(AT+CWJAP+DEF = XXXXXX)
入口：
作者：jzb2019年11月8日
备注：该命令正确响应是：‘O’‘K’ 掩码2位0x0003
      错误响应    FAIL    掩码4位 0xf000
   wifi名称和密码是固定死的
********************************************/
void match_cmd_setwifi(unsigned char ch,USART5_CTRL_ST * p )
{
      if('O' == ch ||'C' == ch)
            { p->current_mask |= 0x0001; }
      else if('K' == ch ||'N' == ch)
            { p->current_mask |= 0x0002; }
      if(0x0003 == p->current_mask & 0x0003 ) //响应成功
            {p->at_cmd_res = AT_CMD_YES;}
      #if 0
      //错误响应
if ('F' == ch)
            {p->current_mask |= 0x8000; }
      else if ('A' == ch)
            {p->current_mask |= 0x4000; }
      else if ('I' == ch)
            {p->current_mask |= 0x2000; }
      else if ('L' == ch)
            {p->current_mask |= 0x1000; }
      if(0xf000 == p->current_mask &0xf000  )//响应失败
            {p->at_cmd_res = AT_CMD_FAIL;}
      #endif
}

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