93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*-------------------------------------------------------------------------
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NeoPixel library helper functions for DotStars using ESP32's alternate SPI (HSPI) (APA102/LPD8806).
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Written by Michael C. Miller.
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Minor changes adapting TwoWireSpiImple to support HSPI by Louis Beaudoin (Pixelvation)
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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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#include <SPI.h>
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template<typename T_SPISPEED> class TwoWireHspiImple
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{
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public:
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typedef typename T_SPISPEED::SettingsObject SettingsObject;
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TwoWireHspiImple(uint8_t, uint8_t) // clock and data pins ignored for hardware SPI
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{
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_hspi = new SPIClass(HSPI);
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}
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~TwoWireHspiImple()
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{
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_hspi->end();
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delete _hspi;
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}
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#if defined(ARDUINO_ARCH_ESP32)
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// for cases where hardware SPI can have pins changed
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void begin(int8_t sck, int8_t miso, int8_t mosi, int8_t ss)
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{
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_hspi->begin(sck, miso, mosi, ss);
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}
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#endif
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void begin()
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{
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_hspi->begin();
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}
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void beginTransaction()
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{
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_hspi->beginTransaction(SPISettings(_speed.Clock, MSBFIRST, SPI_MODE0));
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}
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void endTransaction()
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{
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_hspi->endTransaction();
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}
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void transmitByte(uint8_t data)
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{
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_hspi->transfer(data);
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}
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void transmitBytes(const uint8_t* data, size_t dataSize)
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{
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// ESPs have a method to write without inplace overwriting the send buffer
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// since we don't care what gets received, use it for performance
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// FIX: but for what ever reason on Esp32, its not const
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_hspi->writeBytes(const_cast<uint8_t*>(data), dataSize);
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}
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void applySettings(const SettingsObject& settings)
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{
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_speed.applySettings(settings);
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}
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private:
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SPIClass * _hspi = NULL;
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T_SPISPEED _speed;
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};
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