onRequestI2C()

[Inter Integrated Circuit]

void onRequestI2C(void (*function)());

Description

Sets the function that will be called when the I2C bus requests data.

Parameters

function: the function that will be called when the I2C bus requests data.

Returns

Nothing.

Example Code

The code initializes the I2C communication with the SDA pin connected to pin 4, the SCL pin connected to pin 5, and the address of the chip set to 0x20.

Sets the function requestEvent to be called when the I2C bus requests data.

void requestEvent() {
    // code to be executed when the I2C bus requests data
}

void setup() {
    beginI2C(4, 5, 0x20);  // initializes the I2C communication with the SDA pin connected to pin 4, the SCL pin connected to pin 5, and the address of the chip set to 0x20
    onRequestI2C(requestEvent);  // sets the function requestEvent to be called when the I2C bus requests data
}

void loop() {
}

Notes and Warnings

The parameter function must be a function that does not receive any parameters.