144 lines
4.1 KiB
C++
144 lines
4.1 KiB
C++
/*-------------------------------------------------------------------------
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NeoPixel library helper functions for LPD6803 using general Pins
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Written by Michael C. Miller.
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I invest time and resources providing this open source code,
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please support me by dontating (see https://github.com/Makuna/NeoPixelBus)
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-------------------------------------------------------------------------
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This file is part of the Makuna/NeoPixelBus library.
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NeoPixelBus is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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NeoPixelBus is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with NeoPixel. If not, see
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<http://www.gnu.org/licenses/>.
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-------------------------------------------------------------------------*/
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#pragma once
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// must also check for arm due to Teensy incorrectly having ARDUINO_ARCH_AVR set
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#if defined(ARDUINO_ARCH_AVR) && !defined(__arm__)
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#include "TwoWireBitBangImpleAvr.h"
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#else
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#include "TwoWireBitBangImple.h"
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#endif
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template<typename T_TWOWIRE> class Lpd6803MethodBase
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{
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public:
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typedef typename T_TWOWIRE::SettingsObject SettingsObject;
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Lpd6803MethodBase(uint8_t pinClock, uint8_t pinData, uint16_t pixelCount, size_t elementSize, size_t settingsSize) :
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_sizeData(pixelCount * elementSize + settingsSize),
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_sizeFrame((pixelCount + 7) / 8), // bit for every pixel at least
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_wire(pinClock, pinData)
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{
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_data = static_cast<uint8_t*>(malloc(_sizeData));
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// data cleared later in Begin()
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}
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#if !defined(__AVR_ATtiny85__) && !defined(ARDUINO_attiny)
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Lpd6803MethodBase(uint16_t pixelCount, size_t elementSize, size_t settingsSize) :
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Lpd6803MethodBase(SCK, MOSI, pixelCount, elementSize, settingsSize)
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{
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}
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#endif
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~Lpd6803MethodBase()
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{
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free(_data);
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}
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bool IsReadyToUpdate() const
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{
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return true; // dot stars don't have a required delay
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}
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#if defined(ARDUINO_ARCH_ESP32)
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void Initialize(int8_t sck, int8_t miso, int8_t mosi, int8_t ss)
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{
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_wire.begin(sck, miso, mosi, ss);
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}
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#endif
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void Initialize()
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{
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_wire.begin();
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}
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void Update(bool)
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{
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const uint8_t startFrame[4] = { 0x00 };
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_wire.beginTransaction();
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// start frame
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_wire.transmitBytes(startFrame, sizeof(startFrame));
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// data
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_wire.transmitBytes(_data, _sizeData);
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// end frame
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// one bit for every pixel with no less than 1 byte
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for (size_t frameByte = 0; frameByte < _sizeFrame; frameByte++)
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{
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_wire.transmitByte(0x00);
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}
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_wire.endTransaction();
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}
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uint8_t* getData() const
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{
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return _data;
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};
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size_t getDataSize() const
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{
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return _sizeData;
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};
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void applySettings(const SettingsObject& settings)
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{
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_wire.applySettings(settings);
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}
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private:
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const size_t _sizeData; // Size of '_data' buffer below
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const size_t _sizeFrame;
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T_TWOWIRE _wire;
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uint8_t* _data; // Holds LED color values
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};
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typedef Lpd6803MethodBase<TwoWireBitBangImple> Lpd6803Method;
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#if !defined(__AVR_ATtiny85__) && !defined(ARDUINO_attiny)
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#include "TwoWireSpiImple.h"
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typedef Lpd6803MethodBase<TwoWireSpiImple<SpiSpeed20Mhz>> Lpd6803Spi20MhzMethod;
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typedef Lpd6803MethodBase<TwoWireSpiImple<SpiSpeed10Mhz>> Lpd6803Spi10MhzMethod;
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typedef Lpd6803MethodBase<TwoWireSpiImple<SpiSpeed5Mhz>> Lpd6803Spi5MhzMethod;
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typedef Lpd6803MethodBase<TwoWireSpiImple<SpiSpeed2Mhz>> Lpd6803Spi2MhzMethod;
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typedef Lpd6803MethodBase<TwoWireSpiImple<SpiSpeed1Mhz>> Lpd6803Spi1MhzMethod;
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typedef Lpd6803MethodBase<TwoWireSpiImple<SpiSpeed500Khz>> Lpd6803Spi500KhzMethod;
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typedef Lpd6803MethodBase<TwoWireSpiImple<SpiSpeedHz>> Lpd6803SpiHzMethod;
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typedef Lpd6803Spi10MhzMethod Lpd6803SpiMethod;
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#endif
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