aw9523_led.ino

Go to the documentation of this file.

 
#include <IoExpanderDrv.hpp>
 
#ifndef SENSOR_SDA
#define SENSOR_SDA  17
#endif
 
#ifndef SENSOR_SCL
#define SENSOR_SCL  18
#endif
 
// Pin 8 is P1_0, one of the six channels optimized for low dropout.
// Connect the LED anode to its positive supply and cathode to P1_0.
static constexpr uint8_t LED_PIN = 8;
 
IoExpanderAW9523 expander;
 
void setup()
{
    Serial.begin(115200);
 
    if (!expander.begin(Wire, AW9523_DEFAULT_ADDRESS, SENSOR_SDA, SENSOR_SCL)) {
        while (1) {
            Serial.println("Failed to find AW9523 - check your wiring and address pins!");
            delay(1000);
        }
    }
 
    expander.setLedCurrentRange(IoExpanderAW9523::LedCurrentRange::QUARTER);
    expander.analogWrite(LED_PIN, 0);
    expander.setLedMode(LED_PIN);
}
 
void loop()
{
    for (int brightness = 0; brightness <= 255; ++brightness) {
        expander.analogWrite(LED_PIN, brightness);
        delay(5);
    }
    for (int brightness = 255; brightness >= 0; --brightness) {
        expander.analogWrite(LED_PIN, brightness);
        delay(5);
    }
}