40pin IO Development

RDK-S100_40pin Pinout

Experiment 01 - GPIO Output (LED Blinking)

  1. Hardware Connection

Connect LED bulb to VCC, GND, and IO37 on the S100 mainboard

  1. Software Operation

Enter user home directory and run:

  1. cd user
  2. sudo python3 ./LED_out.py

Terminal as shown:

At this point, you can see the LED bulb starts flashing at one-second intervals.

Experiment 02 - GPIO Input

  1. Hardware Connection

Connect button circuit to IO37 (can use DuPont wire instead of button)

  1. Software Operation

Enter user home directory and run:

  1. cd user
  2. sudo python3 ./GPIO_input.py

Terminal as shown:

At this point, you can see when the button is pressed, the terminal outputs low level; when released, the terminal outputs high level.

Experiment 03 - Button Control LED On/Off

  1. Hardware Connection

Connect button circuit to IO24 (can use DuPont wire instead of button), connect LED bulb to IO23

  1. Software Operation