STM32F407通过ESP8266连接阿里云

闲来无事，手头有一块F4的板子，马上也该嵌入式芯片设计大赛了，就用F4上了一下阿里云。

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前言

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提示：以下是本篇文章正文内容，下面案例可供参考

一、演示效果

二、问题

中间遇到了一些问题，我刚开始是直接一直F1上的代码，移植的过程遇到了好多奇奇怪怪的问题，上网查了一些资料，终于把问题都解决了，但是下完代码之后还是上不了云，串口那就卡住了。最后，我实在没办法，我就在网上下了个代码，人家那个代码全是结构体，虽然勉勉强强能看懂，也上了云，但是，就是上传不了数据，最后，我又把我之前移植的代码拿了过来，发现是串口的问题。最终，可以上云了，还能上传数据，真不错~

三、主要代码

void uart2_init(u32 bound){
   //GPIO????
 	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //??GPIOA??
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);//??USART2??
 
	//??1????????
	GPIO_PinAFConfig(GPIOA,GPIO_PinSource2,GPIO_AF_USART2); //GPIOA2???USART2
	GPIO_PinAFConfig(GPIOA,GPIO_PinSource3,GPIO_AF_USART2); //GPIOA3???USART2
	
	//USART1????
  	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3; //GPIOA2?GPIOA3
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//????
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;	//??50MHz
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //??????
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //??
	GPIO_Init(GPIOA,&GPIO_InitStructure); //???PA2,PA3

   //USART2 ?????
	USART_InitStructure.USART_BaudRate = bound;//?????
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???8?????
	USART_InitStructure.USART_StopBits = USART_StopBits_1;//?????
	USART_InitStructure.USART_Parity = USART_Parity_No;//??????
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//????????
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;	//????
 	 USART_Init(USART2, &USART_InitStructure); //?????2
 	 USART_Cmd(USART2, ENABLE);  //????1 
	 USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);//??????
   USART_ITConfig(USART2, USART_IT_IDLE, ENABLE);
	//Usart1 NVIC ??
 	 NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//?????3
	NVIC_InitStructure.NVIC_IRQChannelSubPriority =3;		//????3
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;			//IRQ????
	NVIC_Init(&NVIC_InitStructure);	//??????????VIC????	
}

void USART2_IRQHandler(void)                    //??2??????
{
   u8 ucCh;
    if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
    {
		USART_ClearITPendingBit(USART2, USART_IT_RXNE); 
		ucCh = USART_ReceiveData(USART2);
		/*䳬³ö1024¸ö×Ö½ÚµÄ×Ö·û´®*/
        if(ESP8266_Fram_Record_Struct .InfBit .FramLength < ( RX_BUF_MAX_LEN - 1 ) ) 		// -1µÄÄ¿µÄ£ºÖÁÉÙ±£Áô×îºóһλ×ö½áÊø룬²¹'\0'
        {
            ESP8266_Fram_Record_Struct .Data_RX_BUF[ ESP8266_Fram_Record_Struct .InfBit .FramLength ++ ]  = ucCh;   
        }
		/*¶Ô³¬³ö1024¸ö×Ö½ÚµÄ×Ö·û´®×öÈÝ´í´¦Àí*/
		
    }
		 else if(USART_GetFlagStatus(USART2, USART_FLAG_IDLE) != RESET)
    {
        USART2->SR;
        USART2->DR;
        ESP8266_Fram_Record_Struct .InfBit .FramFinishFlag = 1;	
		ESP8266_Fram_Record_Struct.Data_RX_BUF[ESP8266_Fram_Record_Struct.InfBit.FramLength] = '\0';
		
        TcpClosedFlag = strstr ( ESP8266_Fram_Record_Struct .Data_RX_BUF, "CLOSED" ) ? 1 : 0;
		TcpReceiveFlag = strstr ( ESP8266_Fram_Record_Struct .Data_RX_BUF, "+IPD" ) ? 1 : 0;
		
		MQTTReceiveFlag = strstr ( ESP8266_Fram_Record_Struct .Data_RX_BUF, "+MQTTSUBRECV" ) ? 1 : 0;
 //       MQTTClosedFlag = strstr ( ESP8266_Fram_Record_Struct .Data_RX_BUF, "CLOSED" ) ? 1 : 0;
		
    }
	}

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总结

我用的是串口二上的阿里云，问题也是在串口2，所以，这里主要上传了串口的处理代码。如有需源码的联系我~
继续加油！