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a5068e0 Jan 15, 2018
@ladyada @tdicola @adammhaile
70 lines (54 sloc) 1.88 KB
This is a library for our Adafruit 16-channel PWM & Servo driver
Pick one up today in the adafruit shop!
These displays use I2C to communicate, 2 pins are required to
interface. For Arduino UNOs, thats SCL -> Analog 5, SDA -> Analog 4
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
#ifndef _ADAFRUIT_PWMServoDriver_H
#define _ADAFRUIT_PWMServoDriver_H
#if ARDUINO >= 100
#include "Arduino.h"
#include "WProgram.h"
#include "Wire.h"
#define PCA9685_SUBADR1 0x2
#define PCA9685_SUBADR2 0x3
#define PCA9685_SUBADR3 0x4
#define PCA9685_MODE1 0x0
#define PCA9685_PRESCALE 0xFE
#define LED0_ON_L 0x6
#define LED0_ON_H 0x7
#define LED0_OFF_L 0x8
#define LED0_OFF_H 0x9
#define ALLLED_ON_L 0xFA
#define ALLLED_ON_H 0xFB
#define ALLLED_OFF_L 0xFC
#define ALLLED_OFF_H 0xFD
@brief Class that stores state and functions for interacting with PCA9685 PWM chip
class Adafruit_PWMServoDriver {
Adafruit_PWMServoDriver(uint8_t addr = 0x40);
Adafruit_PWMServoDriver(TwoWire *I2C, uint8_t addr = 0x40);
void begin(void);
void reset(void);
void setPWMFreq(float freq);
void setPWM(uint8_t num, uint16_t on, uint16_t off);
void setPin(uint8_t num, uint16_t val, bool invert=false);
uint8_t _i2caddr;
TwoWire *_i2c;
uint8_t read8(uint8_t addr);
void write8(uint8_t addr, uint8_t d);