12-STM32物联网开发WIFI(ESP8266)+GPRS(Air202)系统方案升级篇

杨奉武

发布于 2019-05-19 16:53:27

8550

发布于 2019-05-19 16:53:27

文章被收录于专栏：知识分享知识分享

,8266AT指令版本,实现远程升级单片机程序....主要问题是两个printf离得太近,wifi当成一个数据了

先说明一下,如果自己不是用的8266应该修改的地方,由于只是IAP程序里面实现的升级,所以只需要修改IAP程序就可以,大家可以在用户程序里面实现自己的具体功能,如果想升级,就复位一下单片机就可以

其实程序和上一版并没有太大改动...连解析协议都没动,只是修改链接TCP的函数而已

还有个地方需要注意:http数据解析的地方

我现在用的是8266透传实现的,也就是说,网络回给8266什么数据,8266就发给单片机什么数据,不掺杂任何其他东西

如果自己的模块回复的是这样也可以

XXXXXX ?http数据 http数据 ?http数据 ? ? ??

这样的不可以

XXXXXX http数据 XXXX http数据 ?XXXX http数据

需要在这里剔除,...算了,我再做一版.....下一节吧

这是我的数据解析部分

void USART1_IRQHandler(void)                    //????1????·??????ò
{
    u8 Res;
    if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        Res =USART_ReceiveData(USART1);    //????????????????
        
        if(Usart1ReadCnt < 399)
        {
            Usart1ReadBuff[Usart1ReadCnt] = Res;
        }
        else
        {
            Usart1ReadCnt=0;
        }
        Usart1ReadCnt ++;    //????????
        Usart1IdleCnt = 0;
        /*?????ü?????ò*/
        if(UpdateStartFlage == 1)
        {
            if(UpdateOverflow==0)
            {
              if(PutData(&Res,1) == -1)//没有溢出
                {
                    UpdateOverflow = 1;//溢出
                }    
            }
        }
        else//????????
        {
            //HTTP/1.1 200 OK
            //HTTP/1.1 400 Bad Request
            if(!Usart1ReadHttpHeadOK)
            {
                if(Res=='H' && Usart1ReadHttpHeadCnt==0)Usart1ReadHttpHeadCnt++;
                else if(Res=='T' && Usart1ReadHttpHeadCnt==1)Usart1ReadHttpHeadCnt++;
                else if(Res=='T' && Usart1ReadHttpHeadCnt==2)Usart1ReadHttpHeadCnt++;
                else if(Res=='P' && Usart1ReadHttpHeadCnt==3)Usart1ReadHttpHeadCnt++;
                else if(Res=='/' && Usart1ReadHttpHeadCnt==4)Usart1ReadHttpHeadCnt++;
                else if(Res=='1' && Usart1ReadHttpHeadCnt==5)Usart1ReadHttpHeadCnt++;
                else if(Res=='.' && Usart1ReadHttpHeadCnt==6)Usart1ReadHttpHeadCnt++;
                else if(Res=='1' && Usart1ReadHttpHeadCnt==7)Usart1ReadHttpHeadCnt++;
                else if(Res==' ' && Usart1ReadHttpHeadCnt==8)Usart1ReadHttpHeadCnt++;
                else if(Res=='2' && Usart1ReadHttpHeadCnt==9)Usart1ReadHttpHeadCnt++;
                else if(Res=='0' && Usart1ReadHttpHeadCnt==10)Usart1ReadHttpHeadCnt++;
                else if(Res=='0' && Usart1ReadHttpHeadCnt==11)Usart1ReadHttpHeadCnt++;
                else if(Res==' ' && Usart1ReadHttpHeadCnt==12)Usart1ReadHttpHeadCnt++;
                else if(Res=='O' && Usart1ReadHttpHeadCnt==13)Usart1ReadHttpHeadCnt++;
                else if(Res=='K' && Usart1ReadHttpHeadCnt==14){Usart1ReadHttpHeadOK = 1;Usart1ReadHttpHeadCnt=0;Usart1ReadHttpDataLength=0;}  
                else
                {
                    Usart1ReadHttpHeadCnt=0;
                }
            }

            //Content-Length: XXXXXXXX
            if(Usart1ReadHttpHeadOK && !Usart1ReadHttpDataLengthOK)
            {
                if(Res=='-' && Usart1ReadHttpHeadCnt==0)     Usart1ReadHttpHeadCnt++;
                else if(Res=='L' && Usart1ReadHttpHeadCnt==1)Usart1ReadHttpHeadCnt++;
                else if(Res=='e' && Usart1ReadHttpHeadCnt==2)Usart1ReadHttpHeadCnt++;
                else if(Res=='n' && Usart1ReadHttpHeadCnt==3)Usart1ReadHttpHeadCnt++;
                else if(Res=='g' && Usart1ReadHttpHeadCnt==4)Usart1ReadHttpHeadCnt++;
                else if(Res=='t' && Usart1ReadHttpHeadCnt==5)Usart1ReadHttpHeadCnt++;
                else if(Res=='h' && Usart1ReadHttpHeadCnt==6)Usart1ReadHttpHeadCnt++;
                else if(Res==':' && Usart1ReadHttpHeadCnt==7)Usart1ReadHttpHeadCnt++;
                else if(Res==' ' && Usart1ReadHttpHeadCnt==8)Usart1ReadHttpHeadCnt++;
                else if(Usart1ReadHttpHeadCnt>=9 && Usart1ReadHttpHeadCnt<=16 )//数据设置的最大是99999999个字节
                {
                    if(Res!=0x0D)
                    {
                        Usart1ReadHttpDataLength = Usart1ReadHttpDataLength*10 + Res - '0';
                        Usart1ReadHttpHeadCnt++;
                        
                    }
                    else
                    {
                        Usart1ReadHttpDataLengthOK = 1;
                        Usart1ReadHttpHeadCnt = 0;
                        
                    }
                }
                else
                {
                    Usart1ReadHttpHeadCnt = 0;
                }
            }

            //0D 0A 0D 0A
            if(Usart1ReadHttpHeadOK && Usart1ReadHttpDataLengthOK && Usart1ReadHttpDataLength && !Usart1ReadHttpHeadEndOK)
            {
                if(Res==0x0D && Usart1ReadHttpHeadCnt==0)Usart1ReadHttpHeadCnt++;
                else if(Res==0x0A && Usart1ReadHttpHeadCnt==1)Usart1ReadHttpHeadCnt++;
                else if(Res==0x0D && Usart1ReadHttpHeadCnt==2)Usart1ReadHttpHeadCnt++;
                else if(Res==0x0A && Usart1ReadHttpHeadCnt==3){Usart1ReadHttpHeadEndOK = 1;PCout(13) =1;}
                else Usart1ReadHttpHeadCnt = 0;
            }
        }
        
        if(Usart1ReadHttpHeadEndOK == 1)//http 头解析完成
        {
            Usart1ReadHttpHeadEndOK=0;
            Usart1ReadHttpHeadCnt = 0;
            Usart1ReadHttpDataLengthOK=0;
            if(Status==2)//询问的是程序
            {
                UpdateStartFlage = 1;//把程序写入链表
                SysTickIdleTime = 5000;//超时时间大一点
            }
        }
    } 
}

现在看使用

1,给Wi-Fi刷AT指令的固件.依照自己的模块选择