Usage Example for HTTP-GET Request

Hardware Preparation

• TEL0182 SIM7070G Global NB-IoT Communication Module x1
• Windows11 PC x1
• NB SIM card x1
• NB_RF antenna x1
• GPS antenna x1
• FIT0668 Type-C&Micro 2-in-1 USB Cable x1

Software Preparation

• Download and install the driver: Click to download driver

Operation Steps

AT+CNACT=0,1

//Activate wireless connection, the first parameter '0' represents PDP Index, the second parameter '1' represents activation.

AT+CNACT?

//Get local IP address

AT+SHCONF="URL","http://www.baidu.com" 

//Set server URL

AT+SHCONF="BODYLEN",1024

//Set HTTP body length, for the range of maximum body length

AT+SHCONF="HEADERLEN",350

//Set HTTP header length, for the range of maximum header length

AT+SHCONN

//Establish HTTP connection

AT+SHSTATE?

//Get HTTP status
//"+SHSTATE: 1": Connected
//"+SHSTATE: 0": Disconnected

AT+SHCHEAD

//Clear HTTP header, because the HTTP header is appended

AT+SHAHEAD="User-Agent","Mozilla/5.0" 

//Add header content

AT+SHAHEAD="Cache-control","no-cache"

//Add header content

AT+SHAHEAD="Connection","keep-alive"

//Add header content

AT+SHAHEAD="Accept","*/*"

//Add header content

AT+SHREQ="/search?q=SIM7070G", 1

//Set request type to GET
//The response will depend on the actual size of the data returned by the server
//For example, the size of the data returned here is 247

AT+SHREAD=0,247

//Read data length is 247
//Data content follows "+SHREAD: 247"

AT+SHDISC

//Disconnect HTTP connection

AT+CNACT=0,0

//Close wireless connection, the first parameter '0' represents PDP Index, the second parameter '0' represents disconnect.

The default time to keep a request is 60 seconds, you can also choose the setting range of 30-1800