AVR I2C Slave Library
This library provides interrupt-based I2C slave functionality for Atmel 8-bit microcontrollers equipped with a TWI peripheral.
It is somewhat based on an existing library found here: https://github.com/devthrash/I2C-slave-lib
I2CSlave.c-- Implements init/stop, and interrupt-based receive and request logic
I2CSlave.h-- Function prototypes and a convience method for transmitting data
Provide callbacks for receiving and handling requests in your application code. eg:
void I2C_received(uint8_t data); void I2C_requested(); I2C_setCallbacks(I2C_received, I2C_requested);
The library calls the received callback for each byte the master transmits to the slave. The library calls the requested callback for each byte the master attempts to read from the slave.
Init the I2C slave with the slave address
Transmitting data to the master when requested
The example in
main.c implements a sample application in which the slave can receive a byte,
and then will echo the byte when requested.