[Arduino source code for KC868-A4S]-07 OUTPUT PWM

Code:
/*************************************************** 

 ****************************************************/



#include <Wire.h>

#include <Adafruit_PWMServoDriver.h>

#define SDA  4

#define SCL  16

// called this way, it uses the default address 0x40

Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x40);

int brightness = 0;    

int fadeAmount = 64;    

void setup() {

  Serial.begin(9600);

  Serial.println("16 channel PWM test!");

  Wire.begin(SDA,SCL,100000);

  pwm.begin();

  pwm.setOscillatorFrequency(27000000);

  

  pwm.setPWMFreq(1000);  // 1600 This is the maximum PWM frequency



  // 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() {

  // Drive each PWM in a 'wave'

  /* for (uint16_t i=0; i<4096; i += 8) {

    for (uint8_t pwmnum=0; pwmnum < 16; pwmnum++) {

      pwm.setPWM(pwmnum, 0, (i + (4096/16)*pwmnum) % 4096 );

    }

  }*/

   

   for (uint8_t pwmnum=0; pwmnum < 16; pwmnum++) {

      pwm.setPWM(pwmnum, 0, brightness );

    }

    brightness = brightness + fadeAmount;

   if (brightness == 0 || brightness == 4096) {

    fadeAmount = -fadeAmount ;

  } 

  Serial.println(brightness);             

   delay(20);

    

  

   



  

}