sim900a和Esp8266使用AT指令的区别

1.连接云服务

1)sim900A

//AT+CIPSTART="TCP","183.230.40.39","6002"  

2)esp8266

//AT+CIPSTART="TCP","183.230.40.39",6002

 

2.串口接收数据

1)SIM900A:    原始数据

2)ESP8266: +IPD:  后面才是有效数据

 

3.TCP初始化流程AT指令

1）SIM900

if ( ESP8266_SendCmd ( "AT\r\n", "OK", 100 ) )
{

delay_ms ( 1500 );

if ( ESP8266_SendCmd ( "AT\r\n", "OK", 100 ) )
{
//Òì³£
return 1;
//while ( 1 );
}
}
if ( ESP8266_SendCmd ( "ATE0\r\n", "OK", 100 ) )
{

delay_ms ( 1500 );

if ( ESP8266_SendCmd ( "AT\r\n", "OK", 100 ) )
{
//Òì³£
return 1;
//while ( 1 );
}
}

if ( ESP8266_SendCmd ( "AT+CPIN?\r\n", "READY", 1000 ) ) // ¼ì²éÊÖ»ú¿¨ÊÇ·ñÔÚ
{
return 1;

}

if ( ESP8266_SendCmd ( "AT+CGCLASS=\"B\"\r\n", "OK", 100 ) ) // ÉèÖÃGPRSÒƶ¯Ì¨ÀàÐÍΪB
{
return 1;

}

if ( ESP8266_SendCmd ( "AT+CGDCONT=1,\"IP\",\"CMNET\"\r\n", "OK", 100 ) ) // ¶¨ÒåPDPÉÏÏÂÎÄ£¬ÉèÖÃPDPÉÏÏÂÎıê־Ϊ1£¬IPЭÒ飬½ÓÈëµãΪCMNET.
{
return 1;

}

 

if ( ESP8266_SendCmd ( "AT+CGATT=1\r\n", "OK", 100 ) ) //¸½×ÅGPRS
{
return 1;

}

2)ESP8266

if ( ESP8266_SendCmd ( "AT\r\n", "OK", 100 ) )
{

delay_ms ( 1500 );

if ( ESP8266_SendCmd ( "AT\r\n", "OK", 100 ) )
{
//Òì³£
return 1;
//while ( 1 );
}
}
if ( ESP8266_SendCmd ( "ATE0\r\n", "OK", 100 ) )
{

delay_ms ( 1500 );

if ( ESP8266_SendCmd ( "AT\r\n", "OK", 100 ) )
{
//Òì³£
return 1;
//while ( 1 );
}
}

 

if ( ESP8266_SendCmd ( "AT+CWMODE=1\r\n", "OK", 100 ) ) // ÉèÖÃΪ station ģʽ
{
return 1;
}

if ( ESP8266_SendCmd ( "AT+CIPMODE=0\r\n", "OK", 100 ) ) // 0-·Ç͸´«Ä£Ê½
{
return 1;
}

if ( ESP8266_SendCmd ( strESP8266_WIFI_INFO, "CONNECTED", 13000 ) ) //"GOT IP" Á¬½Ó·ÓÉÆ÷
{
if ( ESP8266_SendCmd ( strESP8266_WIFI_INFO, "CONNECTED", 13000 ) )
{
return 1;

}
}