stm32 利用SIM800C模块定位再通过该模块http协议发送给服务器_at+clbs

http 入门参考：https://cloud.tencent.com/developer/article/1425279

1、http基本命令

2、定位基本命令

参考文章：http://www.openedv.com/forum.php?mod=viewthread&tid=232045&page=1

AT+CLBS=1,1

+CLBS: 0,113.333941,23.308106,550

+CLBS: 0,113.333941,23.308106,550 //这就得到了想要的定位数据，这里直接输出的是经纬度。其中113.333941是经度，23.308106是纬度，

3、程序控制

//SIM800C主测试程序
void sim800c_test(void)
{
	u8 key=0; 
	u8 timex=0;
	u8 sim_ready=0;
//	u8 start_flag = 0;
	
	POINT_COLOR=RED;
	Show_Str_Mid(0,30,"ATK-SIM800C 测试程序",16,240); //LCD显示
	while(sim800c_send_cmd("AT","OK",100))//检测是否应答AT指令 
	{
		Show_Str(40,55,200,16,"未检测到模块!!!",16,0);
		delay_ms(800);
		LCD_Fill(40,55,200,55+16,WHITE);
		Show_Str(40,55,200,16,"尝试连接模块...",16,0);
		delay_ms(400);  
	} 	 
	LCD_Fill(40,55,200,55+16,WHITE);
	key+=sim800c_send_cmd("ATE0","OK",200);//不回显
	sim800c_mtest_ui(40,20);
	ntp_update();//网络更新
	while(1)
	{
		delay_ms(10); 
		sim_at_response(1);//检查GSM模块发送过来的数据,及时上传给电脑
		if(sim_ready)//SIM卡就绪.
		{
			key=KEY_Scan(0); 
			if(key==KEY0_PRES)
			{
//				 start_flag =!start_flag;
//				 if(start_flag)
//				 {
							
						GPS_Location(); //定位测试
				 
//				 }
 
				sim800c_mtest_ui(40,30);
				timex=0;
			} 			
		}
		if(timex==0)		//2.5秒左右更新一次
		{
			if(sim800c_gsminfo_show(40,225)==0)sim_ready=1;
			else sim_ready=0;
		}	
		if((timex%20)==0)LED0=!LED0;//200ms闪烁 
		timex++;	 
	} 	
}
 
void GPS_Location()
{
		char *buf;
		char *p,*p1,*p2; 
		char longitude[10],latitude[10];
	
		buf=mymalloc(SRAMIN,80);//申请80个字节的内存
		p=mymalloc(SRAMIN,50);//申请50个字节的内存
		if(buf==NULL||p==NULL)
		{
				printf("buf=mymalloc 失败!!!!!!!!!!\r\n");
		
		}
	
		 //查询经纬度信息	
		while(sim800c_send_cmd("AT+CLBS=1,1","+CLBS",200))
		{
		   printf("查询经纬度失败\r\n");
		}
//+CLBS		
		
    		p1=(u8*)strstr((const char*)USART3_RX_BUF,","); //第一个逗号开始
	      	p2=(u8*)strstr((const char*)(p1+1),","); //第二个逗号开始
			p2[0]=0;
		    sprintf((char*)longitude,"%s",p1+1); //经度		
			p1=(u8*)strstr((const char*)(p2+1),","); //第三个逗号开始
			p1[0]=0;
		    sprintf((char*)latitude,"%s",p2+1); //纬度
			USART3_RX_STA=0;		
		
		
	  sprintf((char*)buf,"AT+HTTPPARA=\"URL\",\"www.xiongyuchun.xyz:9999/Api/addDreamValueAPI.aspx?id=1&lng=%s&lat=%s\"",longitude,latitude); //经纬度作为http请求参数
		sim800c_send_cmd(buf,"OK",200);		
		sim800c_send_cmd("AT+HTTPACTION=0","OK",200);
		
		printf("%s\r\n",buf); //显示域名
		
		myfree(SRAMIN,buf);
		myfree(SRAMIN,p);
		
		delay_ms(1000);
		delay_ms(1000);
		delay_ms(1000); 
		delay_ms(1000); //延时4s
		
}
 
 
//gprs网络初始化
void ntp_update(void)
{  
	 u8 ;
	
	 while(sim800c_send_cmd("AT+SAPBR=3,1,\"Contype\",\"GPRS\"","OK",200))//配置承载场景1
	 {
			printf("配置承载场景1失败\r\n");	
	 
	 }
	while(sim800c_send_cmd("AT+SAPBR=3,1,\"APN\",\"CMNET\"","OK",200))//设置为中国联通网络
	 {
			printf("设置为中国联通网络失败\r\n");	
	 
	 }
	 while(sim800c_send_cmd("AT+SAPBR=1,1",0,200))//激活一个GPRS上下文
	 {
			printf("激活一个GPRS上下文失败\r\n");	
	 
	 }
	 
	  sim800c_send_cmd("AT+HTTPINIT","OK",200);              //http初始化
		sim800c_send_cmd("AT+HTTPPARA=\"CID\",1","OK",200);	  //设置http回话参数
	 
 
}
 
 
 
 

4、工程下载

https://download.csdn.net/download/shenlong1356/12453371