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151 lines
4.9 KiB
C++
151 lines
4.9 KiB
C++
#pragma once
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//
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// FILE: PCA9635.h
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// AUTHOR: Rob Tillaart
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// DATE: 23-apr-2016
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// VERSION: 0.4.2
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// PURPOSE: Arduino library for PCA9635 I2C LED driver, 16 channel
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// URL: https://github.com/RobTillaart/PCA9635
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#include "Arduino.h"
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#include "Wire.h"
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#define PCA9635_LIB_VERSION (F("0.4.2"))
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#define PCA9635_MODE1 0x00
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#define PCA9635_MODE2 0x01
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// 0x80 bit ==> Auto-Increment for all registers.
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// used in writeN() - see issue #9 PCA9634
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#define PCA9635_PWM(x) (0x82+(x))
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#define PCA9635_GRPPWM 0x12
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#define PCA9635_GRPFREQ 0x13
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// check datasheet for details
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#define PCA9635_LEDOUT_BASE 0x14 // 0x14..0x17
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#define PCA9635_LEDOFF 0x00 // default @ startup
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#define PCA9635_LEDON 0x01
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#define PCA9635_LEDPWM 0x02
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#define PCA9635_LEDGRPPWM 0x03
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// Error codes
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#define PCA9635_OK 0x00
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#define PCA9635_ERROR 0xFF
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#define PCA9635_ERR_WRITE 0xFE
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#define PCA9635_ERR_CHAN 0xFD
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#define PCA9635_ERR_MODE 0xFC
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#define PCA9635_ERR_REG 0xFB
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#define PCA9635_ERR_I2C 0xFA
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// Configuration bits MODE1 register
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#define PCA9635_MODE1_AUTOINCR2 0x80 // ReadOnly, 0 = disable 1 = enable
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#define PCA9635_MODE1_AUTOINCR1 0x40 // ReadOnly, bit1
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#define PCA9635_MODE1_AUTOINCR0 0x20 // ReadOnly, bit0
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#define PCA9635_MODE1_SLEEP 0x10 // 0 = normal 1 = sleep
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#define PCA9635_MODE1_SUB1 0x08 // 0 = disable 1 = enable
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#define PCA9635_MODE1_SUB2 0x04 // 0 = disable 1 = enable
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#define PCA9635_MODE1_SUB3 0x02 // 0 = disable 1 = enable
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#define PCA9635_MODE1_ALLCALL 0x01 // 0 = disable 1 = enable
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#define PCA9635_MODE1_NONE 0x00
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// Configuration bits MODE2 register
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#define PCA9635_MODE2_BLINK 0x20 // 0 = dim 1 = blink
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#define PCA9635_MODE2_INVERT 0x10 // 0 = normal 1 = inverted
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#define PCA9635_MODE2_ACK 0x08 // 0 = on STOP 1 = on ACK
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#define PCA9635_MODE2_TOTEMPOLE 0x04 // 0 = open drain 1 = totem-pole
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#define PCA9635_MODE2_NONE 0x00
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// NOT IMPLEMENTED YET
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#define PCA9635_SUBADR(x) (0x17+(x)) // x = 1..3
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#define PCA9635_ALLCALLADR 0x1B
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class PCA9635
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{
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public:
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explicit PCA9635(const uint8_t deviceAddress, TwoWire *wire = &Wire);
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#if defined (ESP8266) || defined(ESP32)
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bool begin(int sda, int scl,
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uint8_t mode1_mask = PCA9635_MODE1_ALLCALL,
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uint8_t mode2_mask = PCA9635_MODE2_NONE);
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#endif
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bool begin(uint8_t mode1_mask = PCA9635_MODE1_ALLCALL,
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uint8_t mode2_mask = PCA9635_MODE2_NONE);
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void configure(uint8_t mode1_mask, uint8_t mode2_mask);
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bool isConnected();
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uint8_t channelCount() { return _channelCount; };
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uint8_t setLedDriverMode(uint8_t channel, uint8_t mode);
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uint8_t getLedDriverMode(uint8_t channel);
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// single PWM setting
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uint8_t write1(uint8_t channel, uint8_t value);
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// RGB setting, write three consecutive PWM registers
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uint8_t write3(uint8_t channel, uint8_t R, uint8_t G, uint8_t B);
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// generic worker, write N consecutive PWM registers
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uint8_t writeN(uint8_t channel, uint8_t* arr, uint8_t count);
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// reg = 1, 2 check datasheet for values
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uint8_t writeMode(uint8_t reg, uint8_t value);
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uint8_t readMode(uint8_t reg);
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// convenience wrappers
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uint8_t setMode1(uint8_t value) { return writeMode(PCA9635_MODE1, value); };
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uint8_t setMode2(uint8_t value) { return writeMode(PCA9635_MODE2, value); };
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uint8_t getMode1() { return readMode(PCA9635_MODE1); };
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uint8_t getMode2() { return readMode(PCA9635_MODE2); };
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// TODO PWM also in %% ?
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void setGroupPWM(uint8_t value) { writeReg(PCA9635_GRPPWM, value); };
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uint8_t getGroupPWM() { return readReg(PCA9635_GRPPWM); };
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// TODO set time in milliseconds and round to nearest value?
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void setGroupFREQ(uint8_t value) { writeReg(PCA9635_GRPFREQ, value); };
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uint8_t getGroupFREQ() { return readReg(PCA9635_GRPFREQ); };
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int lastError();
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/////////////////////////////////////////////////////
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//
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// SUB CALL - ALL CALL (since 0.2.0)
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//
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// nr = { 1, 2, 3 }
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bool enableSubCall(uint8_t nr);
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bool disableSubCall(uint8_t nr);
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bool isEnabledSubCall(uint8_t nr);
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bool setSubCallAddress(uint8_t nr, uint8_t address);
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uint8_t getSubCallAddress(uint8_t nr);
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bool enableAllCall();
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bool disableAllCall();
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bool isEnabledAllCall();
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bool setAllCallAddress(uint8_t address);
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uint8_t getAllCallAddress();
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private:
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// DIRECT CONTROL
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uint8_t writeReg(uint8_t reg, uint8_t value); // returns error status.
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uint8_t readReg(uint8_t reg);
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uint8_t _address;
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uint8_t _register;
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uint8_t _data;
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int _error;
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uint8_t _channelCount = 16;
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TwoWire* _wire;
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};
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// -- END OF FILE --
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