I am using an adafruit library to communicate with the ic.
I am not cascading them, so I have no idea how to do that part. But controller 1 of them is easy. And when I have my pcb's design finished and ordered and all the parts at home, I will come up with a protocol of how the lights should respond to mysensor messages.
/***************************************************
This is an example for our Adafruit 16-channel PWM & Servo driver
GPIO test - this will set a pin high/low
Pick one up today in the adafruit shop!
------> http://www.adafruit.com/products/815
These drivers use I2C to communicate, 2 pins are required to
interface.
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
#include <Wire.h>
#include <Adafruit_PWMServoDriver.h>
// called this way, it uses the default address 0x40
//Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
// you can also call it with a different address you want
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x41);
// you can also call it with a different address and I2C interface
//Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x40, &Wire);
void setup() {
Serial.begin(9600);
Serial.println("GPIO test!");
pwm.begin();
pwm.setPWMFreq(1600); // Set to whatever you like, we don't use it in this demo!
// if you want to really speed stuff up, you can go into 'fast 400khz I2C' mode
// some i2c devices dont like this so much so if you're sharing the bus, watch
// out for this!
Wire.setClock(400000);
}
void loop() {
delay(1000);
// Drive each pin in a 'wave'
for (uint16_t waarde=0; waarde <4000; waarde++) {
pwm.setPin(0,waarde); // turns pin fully on
delay(5);
}
delay(500);
for (uint16_t waarde=4000; waarde >0; waarde--) {
pwm.setPin(0,waarde); // turns pin fully on
delay(5);
}
}```
