Template: A7670X Cat-1 HAT Jetson Guide

Hardware connection

Set the jumpers to B area, and the 3V3 to PWR.

Test with minicom

1. Connect the A7600X Cat-1/GSM/GPRS HAT to Jetson Nano.
2. Open a terminal and install the minicom tool.

sudo apt-get install minicom 

3. Open a minicom and test with AT commands.

sudo minicom -D /dev/ttyTHS1 -b 115200

To exit the minicom, you can press Ctrl+a and then press X. To configure, you can pres Ctrl+A and then Z.

Network testing

RNDIS method

• Connect the USB interface of A7670X modules to Raspberry Pi or Jetson Nano by micro USB cable. Check if the ttyUSB1 port is recognized normally.

sudo ls /dev/ttyUSB*

• Configure the module by minicom.

sudo minicom -D /dev/ttyUSB1

• Run the following commands and the A7670x module will reboot.

AT+DIALMODE=0
AT$MYCONFIG="usbnetmode",0

• Check if a new USBx port is recognized by ifconfig command. (It is USB0 for Pi and USB1 for Jetson Nano).

 ifconfig

• Applay the IP address of the USBx port.

sudo dhclient -v usb0

• Test the USBx port and try to ping a website, for example, google.com.

sudo ping -I usb0 www.google.com

• If the network is not available, please configure DNS for a try.

sudo route add -net 0.0.0.0 usb0

• If you want to restore the network mode, please send the following AT command by minicom:

AT+DIALMODE=1

PPPD method, please refer to the following link.

• SIM868 PPP Dail-up Networking

Python Example

Install libraries:

sudo apt-get python3-pip
sudo pip3 install pyserial
sudo apt-get install p7zip

Open a terminal and download the example:

cd ~
wget https://files.waveshare.com/upload/f/f3/AT7600X_Cat_Hat_Demo.7z
sudo apt-get install p7zip-full
7z x A7600X_Cat_HAT_Demo.7z   -r -o./
sudo chmod 777 -R /home/pi/A7600X_Cat_HAT_Demo

Run the examples:

sudo python TCP.py

The expected result: