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79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
//
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// FILE: PCA9685.H
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// AUTHOR: Rob Tillaart
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// DATE: 24-apr-2016
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// VERSION: 0.1.00
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// PURPOSE: I2C PCA9685 library for Arduino
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// URL: https://github.com/RobTillaart/Arduino/tree/master/libraries
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//
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// HISTORY:
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// see PCA9685.cpp file
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//
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#ifndef _PCA9685_H
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#define _PCA9685_H
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#include "Arduino.h"
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#define PCA9685_LIB_VERSION "0.1.00 BETA"
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// check datasheet for details
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#define PCA9685_MODE1 0x00
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#define PCA9685_MODE2 0x01
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//
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#define PCA9685_PWMALL 0xFA
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// NOT IMPLEMENTED
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#define PCA9685_SUBADR(x) (0x01+(x)) // x = 1..3
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// NOT IMPLEMENTED
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#define PCA9685_ALLCALLADR 0x05
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// NOT IMPLEMENTED
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#define PCA9685_PRE_SCALE 0xFE
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// NOT IMPLEMENTED
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#define PCA9685_TESTMODE 0xFF
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// ERROR CODES
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#define PCA9685_OK 0x00
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#define PCA9685_ERROR 0xFF
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#define PCA9685_ERR_CHANNEL 0xFE
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#define PCA9685_ERR_MODE 0xFD
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class PCA9685
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{
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public:
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explicit PCA9685(const uint8_t deviceAddress);
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// reg = 1, 2 check datasheet for values
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void writeMode(uint8_t reg, uint8_t value);
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uint8_t readMode(uint8_t reg);
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// single PWM setting, 0..15, 0..4095, 0..4095
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// allows shifted PWM's
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void setPWM(uint8_t channel, uint16_t onTime, uint16_t offTime);
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void getPWM(uint8_t channel, uint16_t* onTime, uint16_t* offTime);
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// single PWM setting, 0..15, 0..4095
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// onTime == 0, sets the OFF time
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void setPWM(uint8_t channel, uint16_t val);
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void setON(uint8_t channel);
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void setOFF(uint8_t channel);
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int lastError();
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private:
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// DIRECT CONTROL
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void writeReg(uint8_t reg, uint8_t value);
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void writeReg2(uint8_t reg, uint16_t a, uint16_t b);
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uint8_t readReg(uint8_t reg);
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uint8_t _address;
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int _error;
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};
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#endif
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//
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// END OF FILE
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//
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