This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ===== Rasbperry Pi 3 with GSM module ===== ==== Modem ==== It's a generic chinese modem with SIM800C GSM chip, has microphone and audio input. ==== Connection ==== ==== Serial port ==== The modem uses a serial port to communicates with you, by default the serial port is redirected to a terminal port, to change it you need to follow this steps in Raspbian 8.0. Launch raspi-config: <code> $ sudo raspi-config </code> Select 9. Advanced Options, next A7 Serial, choose no to question "Would you like a login shell to be accessible over serial?". Select Finish button. We need also to enable UART, follow this steps, edit /boot/config.txt and add or change the next lines: <code> enable_uart=1 dtoverlay=pi3-miniuart-bt </code> You can follow the same steps with RPi and RPi2 but omitting the "dtoverlay=pi3-miniuart-bt" line. Restart. ==== minicom and serial port ==== Now you can start to test your modem: <code> sudo minicom -b 115200 -o -D /dev/ttyAMA0 </code> ==== References ==== * https://www.cube-controls.com/2015/11/02/disable-serial-port-terminal-output-on-raspbian/ * https://kb.op5.com/display/FAQ/HowTo+test+SMS-Modem+using+minicom