Andrew Lindsay / Adafruit_PWMServoDriver

This is a library for our Adafruit 16-channel PWM or any other board that uses the PCA9685 I2C PWM driver chip.

Dependents:   K9_Head_Controller

Adafruit_PWMServoDriver.h@0:ed0c8a6481fd, 2013-08-17 (annotated)

Committer:
bxd
Date:
Sat Aug 17 06:59:05 2013 +0000
Revision:
0:ed0c8a6481fd
Version 0, untested.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bxd 0:ed0c8a6481fd 1 /***************************************************
bxd 0:ed0c8a6481fd 2 This is a library for our Adafruit 16-channel PWM & Servo driver
bxd 0:ed0c8a6481fd 3
bxd 0:ed0c8a6481fd 4 Pick one up today in the adafruit shop!
bxd 0:ed0c8a6481fd 5 ------> http://www.adafruit.com/products/815
bxd 0:ed0c8a6481fd 6
bxd 0:ed0c8a6481fd 7 These displays use I2C to communicate, 2 pins are required to
bxd 0:ed0c8a6481fd 8 interface. For Arduino UNOs, thats SCL -> Analog 5, SDA -> Analog 4
bxd 0:ed0c8a6481fd 9
bxd 0:ed0c8a6481fd 10 Adafruit invests time and resources providing this open source code,
bxd 0:ed0c8a6481fd 11 please support Adafruit and open-source hardware by purchasing
bxd 0:ed0c8a6481fd 12 products from Adafruit!
bxd 0:ed0c8a6481fd 13
bxd 0:ed0c8a6481fd 14 Written by Limor Fried/Ladyada for Adafruit Industries.
bxd 0:ed0c8a6481fd 15 BSD license, all text above must be included in any redistribution
bxd 0:ed0c8a6481fd 16
bxd 0:ed0c8a6481fd 17 Ported to mbed by Brian Dickman, mbed.org user bxd.
bxd 0:ed0c8a6481fd 18
bxd 0:ed0c8a6481fd 19 Note: you are responsible for creating the I2C object, and setting
bxd 0:ed0c8a6481fd 20 frequency if desired.
bxd 0:ed0c8a6481fd 21 ****************************************************/
bxd 0:ed0c8a6481fd 22
bxd 0:ed0c8a6481fd 23 #ifndef _ADAFRUIT_PWMServoDriver_H
bxd 0:ed0c8a6481fd 24 #define _ADAFRUIT_PWMServoDriver_H
bxd 0:ed0c8a6481fd 25
bxd 0:ed0c8a6481fd 26 #include "mbed.h"
bxd 0:ed0c8a6481fd 27
bxd 0:ed0c8a6481fd 28
bxd 0:ed0c8a6481fd 29 #define PCA9685_SUBADR1 0x2
bxd 0:ed0c8a6481fd 30 #define PCA9685_SUBADR2 0x3
bxd 0:ed0c8a6481fd 31 #define PCA9685_SUBADR3 0x4
bxd 0:ed0c8a6481fd 32
bxd 0:ed0c8a6481fd 33 #define PCA9685_MODE1 0x0
bxd 0:ed0c8a6481fd 34 #define PCA9685_PRESCALE 0xFE
bxd 0:ed0c8a6481fd 35
bxd 0:ed0c8a6481fd 36 #define LED0_ON_L 0x6
bxd 0:ed0c8a6481fd 37 #define LED0_ON_H 0x7
bxd 0:ed0c8a6481fd 38 #define LED0_OFF_L 0x8
bxd 0:ed0c8a6481fd 39 #define LED0_OFF_H 0x9
bxd 0:ed0c8a6481fd 40
bxd 0:ed0c8a6481fd 41 #define ALLLED_ON_L 0xFA
bxd 0:ed0c8a6481fd 42 #define ALLLED_ON_H 0xFB
bxd 0:ed0c8a6481fd 43 #define ALLLED_OFF_L 0xFC
bxd 0:ed0c8a6481fd 44 #define ALLLED_OFF_H 0xFD
bxd 0:ed0c8a6481fd 45
bxd 0:ed0c8a6481fd 46
bxd 0:ed0c8a6481fd 47 class Adafruit_PWMServoDriver {
bxd 0:ed0c8a6481fd 48 public:
bxd 0:ed0c8a6481fd 49 Adafruit_PWMServoDriver(I2C *i2c, uint8_t addr = 0x40);
bxd 0:ed0c8a6481fd 50 void begin(void);
bxd 0:ed0c8a6481fd 51 void reset(void);
bxd 0:ed0c8a6481fd 52 void setPWMFreq(float freq);
bxd 0:ed0c8a6481fd 53 void setPWM(uint8_t num, uint16_t on, uint16_t off);
bxd 0:ed0c8a6481fd 54
bxd 0:ed0c8a6481fd 55 private:
bxd 0:ed0c8a6481fd 56 I2C *_i2c;
bxd 0:ed0c8a6481fd 57 uint8_t _i2caddr;
bxd 0:ed0c8a6481fd 58
bxd 0:ed0c8a6481fd 59 uint8_t read8(uint8_t addr);
bxd 0:ed0c8a6481fd 60 void write8(uint8_t addr, uint8_t d);
bxd 0:ed0c8a6481fd 61 };
bxd 0:ed0c8a6481fd 62
bxd 0:ed0c8a6481fd 63 #endif