Template: SIM7600G-H-M2 4G HAT Spec

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Instruction

Features:

  • Supports dial-up, phone call, SMS, TCP, UDP, MQTT, HTTP(S), FTP(S), and so on.
  • GNSS positioning: GPS, Beidou, Glonass, Galileo, QZSS, LBS base station.
  • USB 3.1 port (USB 2.0 compatible) for connecting to PC, Raspberry Pi, or Jetson Nano host board to enable high speed 4G communication.
  • Onboard UART, PWR, and RST control pin, built-in voltage level translator, enabled via DIP switch, for use with hosts like Raspberry Pi or Arduino.
  • Onboard USB-C connector, enabled via switch, for connecting standalone power supply for the module, allows more loads, stable amd flexible power supply.
  • Onboard power supply on/off switch, reset button and LED indicator, easy to turn on/off the module or monitor the operating status.
  • Reserved 4x SMA to IPEX antenna interfaces, with pre-soldered 2x connectors for easily using antennas, allows changing the SMA antenna position.
  • Onboard audio jack and audio decoder, allows audio operation like making phone call.
  • High efficiency power supply circuit, up to 3A output current.

Test:

  • In addition to the MICRO USB cable LTE antenna GPS antenna, the user needs to prepare the following things before using the module:
1 x 4G SIM card (4G-enabled and GPRS mobile phone card);
1 x earphone with microphone (optional);
1 x USB TO UART module (optional);
  • In the case of power off, insert the activated 4G SIM card, the headphone cable with microphone (optional), and then connect the USB cable to the computer.
  • Connect one end of the micro USB cable to the USB interface of the PC, and the other end to the USB interface of the SIM7600G-H-M2 4G HAT, the PWR light is on, and the NET light is off.
  • When you see the NET light starts flashing every second, the module starts to work.
  • Turn the TX and RX of the DIP switch to the ON side, connect to the computer and other equipment through the USB TO UART module, and perform AT command to debug on the corresponding COM port. (optional)

SIM7600G-H -M2-TOP.png

  • Open the device manager and you can see that there are COM ports as shown in the figure below.

Sim7600CE-3.jpg

  • If the COM port is recognized in the above picture, but an exclamation mark appears, it means that the driver has not been installed, and can be manually loaded as follows:
  • Download drive: SIM7600X drive document.
  • Insert the USB port of the 4G HAT into a Windows computer (the Windows 10 operating system is used as an example below)
  • Open Device Manager - > Other Devices - > "SimTech,Incorporated" - > Update the driver - > Browse my computer for driver software - > Select a path to save the driver file based on your system - > Installation complete.
  • Install all identified devices according to the above method, and the driver installation effect is as follows:

SIM7600X-Driver-8.jpg

Net light operating condition

Net light operating condition as follows:

Net Light working mode Module working mode
Always on searching for the net or on the call
200ms on/200ms off Data connection established
800ms on/800ms off the network is registered
Off Shutdown or hibernate mode

Brief description of the test

Common AT commands

Command Description Return Value
AT AT test command OK
ATE ATE1 sets echo
ATE0 turns off echo
OK
AT+CGMI Query module manufacture OK
AT+CGMM Query module model OK
AT+CGSN Query product serial number OK
AT+CSUB Query module version and chip OK
AT+CGMR Query the firmware version serial number OK
AT+IPREX Set the module hardware serial port baud rate +IPREX:
OK
AT+CRESET reset module OK
AT+CSQ Network signal quality query, return signal value +CSQ: 17,99
OK
AT+CPIN? Query the status of the SIM card and return READY, indicating that the SIM card can be recognized normally +CPIN: READY
AT+COPS? Query the current operator, the operator information will be returned after normal networking +COPS:
OK
AT+CREG? Query network registration status +CREG:
OK
AT+CPSI? Query UE system information
AT+CNMP Network mode selection command:
2:Automatic
13:GSM only
38:LTE only
48 : Any modes but LTE
... ....
OK

For more AT commands, see SIM7500_SIM7600 Series_AT Command manual_v1.07

SIM7600 4G HAT(B) AT Command.png

Dail-up

[Note]: You must use a SIM card with GPRS networking function enabled and not out of service

PC Windows Internet

NDIS Dail-up
  • At present, when using Windows 10 operating system, you can connect to 4G DONGLE module (equipped with 4G card of China Mobile/Telecom/Unicom). After installing the driver, most computers will automatically connect to the Internet.
  • If WINdows cannot access the Internet, you need to manually start NDIS dialing, open SIM7600 AT port, and send the command:
AT$QCRMCALL=1,1+enter

SIM820 dial.png
At this point, the NDIS dialing takes effect, and the computer can connect to the network; if the dialing command returns an error, send the following command to set the NDIS dialing mode and then dial again:

AT+CUSBPIDSWITCH=9001,1,1

RNDIS Dial-Up Internet

In addition, dial-up Internet access using RNDIS is also possible:

  • After the device installed SIM card and antenna, connect the USB port to computer, then connect the power supply.
  • Refer to the above to install the USB driver
  • Open the serial port assistant, find the serial port number corresponding to the AT serial port, and send the AT command to check whether it is registered on the network:
AT+CPSI?  
  • If you have successfully registered on the network, then send the AT command to enable USB dial-up Internet access:
AT+CUSBPIDSWITCH=9011,1,1
  • If the transmission is successful, the DTU will return OK and reboot automatically.
  • And then you can find that there are some unrecognized devices in the Device Manager on the computer, such as RNDIS (with exclamation mark).

RNDIS Dial-up01.png

  • Right-click the 'RNDIS', search "Update Divers" and select "Let me pick from a list of available drivers on my computer", then select "Network adapters" from the device list.

RNDIS Dial-up02.png

RNDIS Dial-up03.png

  • Select "Microsoft" in the manufacturer list of the Network adapters window, and then select "Remote NDIS Compatible Device" in the list on the right, which is the remote NDIS compatible device.

500PX

Click 'Next' and wait for the installation to finish, the RNDIS Kitl device will be installed successfully. And then you can see that the PC can access the Internet via DTU.

PPP dial-up

If the NDIS or RNDIS dial-up cannot access the Internet, you can also use PPP dial-up. The operation steps are as follows:

  • Network and Internet Settings -> Set up a new connection -> Connect to the Internet -> Dial up (D) -> Dial a phone number (D): *99# (others are empty by default) -> Connection -> Register -> Connected to the Internet

GPS Test

GNSS control instance

  • Plug in the GPS antenna, and place the receiver tag face down in the open air,(Note that rainy weather cannot be tested) you need to wait about 1 minute before receiving the location signal.

SIM7600G-H-M2-GPS.png

  • Detailed test instructions and screenshots are as follows:
AT+CGPS=1               // Open GPS
AT+CGPSINFO             // Prints GPS information to the serial port
AT+CGPS=0               // Turn off GPS

SIM7600E-H 4G DTU GNSS.png

TCP/IP Internet data

GPRS debugging requires a SIM card with GPRS networking function enabled:
The following example takes accessing a mobile SIM card as an example:

  1. Correctly install the mobile phone card (the GPRS networking function must be enabled), the GSM antenna, and connect the USB cable to the computer;
  2. Press the PWR key to start the module and wait for more than ten seconds;
  3. Observe whether the indicator light is normal, the PWR indicator is always on, and the NET indicator is flashing;

Set up a local computer virtual server

The virtual server defines the mapping relationship between the WAN service port and the LAN network server. All access to the WAN service port will be relocated to the LAN network server specified by the IP address. (Please refer to your router's corresponding manufacturer's manual)

  1. Use a browser to log in to the router management interface (please refer to your router manual for the specific address)
  2. Set the port number: 2317 (it does not conflict with the existing port number. In this example, it is set to 2317)
  3. Set the intranet IP of the computer (the IP obtained by the computer in the local area network can be run CMD on the local machine, enter the command line prompt, enter ipconfig to check the IPv4 address, the intranet IP of the computer in this example is 192.168.1.168), as shown in the following figure :

Sim7600CE-18.jpg

Configure GPRS

AT+CGDCONT=1,"IP","CMNET"     //Set APN
AT+CSQ       //Query the network signal quality. The first parameter is that the network signal quality is up to 31. The larger the  value, the stronger the network signal.
AT+CREG?         //Query the network registration status, where the second parameter is 1, indicating that the registration has    been successful.
AT+CIPMODE=1        //Set TCP/IP mode
AT+CSOCKSETPN=1          //select TCP/IP application mode
AT+CIPMODE=0          //select TCP/IP application mode
AT+NETOPEN         //startup mode 
AT+CIPOPEN=0,"TCP","113.81.233.65",2317         //Set TCP、IP and port number, establish TCP/IP connection 
AT+CIPSEND=0,9,         //To specify to send 9 characters of data, return to > to start sending 9 characters of content
AT+CIPCLOSE=0,         //close the TCP connection
AT+NETCLOSE,         //close the network

The operation is shown in the following figure:
thumb

Call Phone

  • Refer to the "Hardware Configuration" chapter to connect the LTE antenna, SIM card (the phone function must be enabled) and the headset cable with microphone, and the module is turned on.
  • Common commands for making calls:
AT+CNUM Check the phone number (not all SIM cards support this command) +CNUM
OK
AT+CSDVC AT+CSDVC=1: switch to headphone output
AT+CSDVC=3: switch to speaker output
OK
AT+CLVL=? Query volume range OK
AT+CLVL=2 set volume to 2 OK
ATD<phone_number>; ATD10086; Dial Mobile customer service phone number 10086 OK
AT+CHUP set volume to 2 OK
AT+CLIP=1 Set up caller ID OK
ATA Answering the Phone OK
  • The detailed operation screenshots are as follows:

thumb
[Note]: When using the SSCOM serial port assistant to send and receive AT commands, you must click "carriage return and line feed"

Voice output mode and volume adjustment

AT+CSDVC=1 		//switch to headphones 
AT+CSDVC =3 	        //switch to speaker
AT+CLVL =?		//Query the volume range, return +CLVL: (0-5) //Indicates that the volume is adjustable from 0 to 5
AT+CLVL=2     	        //Set the volume to 2, return OK

Answer the phone

Incoming call serial port display: RING
Send “ATA”      //Answer the phone
Send ”AT+CHUP”  //Hang up

Audio parameter debugging

AT+CACDBFN=?
+CACDBFN: (Handset_cal.acdb,Handset_tianmai.acdb)	// It is recommended to consider setting this set of parameters 
OK

A.In the initialization stage of the module startup, before making a call, add the following

AT^PWRCTL=0,1,3	// Mainly improve TDD noise effect 
OK

B. The module is in the process of establishing a voice call

VOICE CALL:BEGIN  	// Establish module call to improve call    effect
AT+CECM=1      		//suppress echo
OK
AT+CECH=0x500 	// improve the volume on the mobile phone  
OK

See "SIM7X00_Audio_Application_Note" document for details

Send English SMS

  1. Correctly install the SIM card and LTE antenna, connect the module's USB interface to the computer with a USB cable, and turn on the module;
  2. Observe whether the indicator light is normal, the PWR indicator is always on, and the NET indicator is flashing;
  3. Set the local SMS center: AT + CSCA = " + 8613800755500" + Enter, return OK.

Note: China Mobile's SMS service center number is +861380xxxx500, where xxxx is the long-distance telephone area code where you are located. The SMS center may be different from place to place. For details, you can query Baidu or call China Mobile Unicom customer service. This SMS center is Shenzhen (0755) ;

  1. AT+CMGF=1: Set the SMS mode to TEXT;
  2. AT+CMGS="phone number"<Enter>, set the recipient's phone number, and then return: ">", send the content what you need, such as "Send massage test!", You don’t need to “Enter” at the end. After editing the text message, send 1A to send information in hexadecimal format (1A is the key value of "CTRL+Z", which is used to tell the module to perform the sending operation, or 1B or "ESC" to cancel the operation). After successfully sending, the module returns + CMGS: 15 confirm that the transmission was successful. As shown below.

thumb

Receive English SMS

  1. Send a message on the phone: "This is a receive test for SIM7600X!" to the test module
  2. When receiving the information, the serial port will brake and report the information, "SM", 20, which means there are 20 pieces of information in the SM, and the message just sent is the 20th piece of information.
  3. Read information: AT+CMGR=20 to read the 20th information (AT+CMGL="ALL" to read all information)
  4. Delete information: AT+CMGD=20, as shown below
  5. Convert the displayed information to text through a code converter.

thumb

Send Chinese SMS

  1. Set the parameters for sending SMS
AT+CMGF=1             //set to text mode 
AT+CSCS="UCS2"           //Set info text to UCS2 encoding set
AT+CSMP=17,167,2,25          //Set text mode parameters
AT+CMGS="00310033003400330032003100310039003100300031"          //Set the UCS2 set of the receiver's mobile number
  1. Waiting to return >, send the information content converted by the software at this time (00530049004D003700360030003000584E2D658777ED4FE16D4B8BD5), no carriage return is required at the end, after editing the text message, send 1A to send the message in hexadecimal format, as shown in the following figure:

thumb

Receive Chinese SMS

  1. Set the parameters for sending SMS
AT+CMGF=1    	 //set test mode
AT+CSCS="GSM"	//set GSM code set
AT+CNMI=2,1   	//Set up new message alerts
  1. When receiving the information, the serial port will automatically report the information, and read the returned 21st information as shown in the figure below:
AT+CMGR=21        //Read the SMS content of serial number 21
  1. Translate the information into Chinese in the software, as shown below:

thumb

Raspberry Pi Internet Operation

If you are using Raspberry Pi 4B, Raspberry Pi 3B+ or CM4-IO-BASE-A/B baseboard, you can use the used the customized USB adapter.if it is used for other embedded mainboards or PCs, it can be connected through the matching double-head usb3.0 data cable; as shown in the following figure:
SIM7600G-H-M2 4G HAT-1.png
For specific operations related to Raspberry Pi dial-up Internet access, please refer to the following links:

Raspberry Pi minicom sends AT command to debug

  1. Connect the module into Raspberry Pi
  2. Install minicom, minicom is a serial debugging tool for linux platform
sudo apt-get install minicom
  1. USB and UART serial AT command debugging
  • Execute minicom -D /dev/ttyUSB2. (default baud rate is 115200)
 sudo minicom -D /dev/ttyUSB2
  • Turn ON the TXD and RXD of the dial switch and execute minicom -D /dev/ttyS0. (Baud rate 115200)
 sudo minicom -D /dev/ttyS0 -b 115200
  1. Taking the AT synchronization test as an example, send relevant commands, as shown in the following figure:

SIM7600G-H-M2 4G HAT-2.png
* minicom can enter the setting mode by pressing Ctrl+A, then Z, and exit by selecting X. If the sending command does not display, please send the command ATE=1 + Enter -> open the echo

Program sample

  1. After inserting the module and connecting it to the Raspberry Pi;
  2. Download the sample program to the /home/pi/ path;
wget https://www.waveshare.net/w/upload/5/5c/SIM7600G-H-4G-HAT-B-Demo.zip
sudo apt-get install p7zip-full
7z x SIM7600G-H-4G-HAT-B-Demo.zip 

sudo chmod 777 -R /home/pi/SIM7600X-4G-HAT\(B\)-Demo

Raspberry Pi minicom sends AT command to debug

1.Connect the module into Raspberry Pi
2.Install minicom, minicom is a serial debugging tool for linux platform

sudo apt-get install minicom

3.USB and UART serial AT command debugging

  • Execute minicom -D /dev/ttyUSB2. (default baud rate is 115200)
 sudo minicom -D /dev/ttyUSB2
  • Turn ON the TXD and RXD of the dial switch and execute minicom -D /dev/ttyS0. (Baud rate 115200)
 sudo minicom -D /dev/ttyS0 -b 115200

4.Taking the AT synchronization test as an example, send relevant commands, as shown in the following figure:
SIM7600G-H-M2 4G HAT-2.png
* minicom can enter the setting mode by pressing Ctrl+A, then Z, and exit by selecting X. If the sending command does not display, please send the command ATE=1 + Enter -> open the echo

Program sample

1.After inserting the module and connecting it to the Raspberry Pi; 2.Download the sample program to the /home/pi/ path;

wget https://www.waveshare.net/w/upload/5/5c/SIM7600G-H-4G-HAT-B-Demo.zip
sudo apt-get install p7zip-full
7z x SIM7600G-H-4G-HAT-B-Demo.zip 

sudo chmod 777 -R /home/pi/SIM7600X-4G-HAT\(B\)-Demo 3.Go to the corresponding instance directory respectively, compile and run the program, the relevant instructions are as follows (take the PhoneCall.py program as an example):

cd SIM7600G-H-4G-HAT-B-Demo/Raspberry/python/PhoneCall/      //Go to the folder where PhoneCall.py is located
sudo apt-get install python3-pip
sudo pip3 install pyserial

sudo pip3 install RPi.GPIO

sudo python PhoneCall.py       //Run the program

AT command example