The C-code of a master and slave that communicate over SPI.
The code was written in Atmel Studio and is supposed to demonstrate the functionality of the SPI communication between two Arduino UNO/NANO.
- reads the state of a button
- Send the button state over SPI to the slave
- controls the SPI communication
- controls an LED depending on the button state of the master
- Turns on the LED in case button is pressed
- Turns off the LED in case button is not pressed
Schematic:
