98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/*-------------------------------------------------------------------------
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NeoPixel library helper functions for DotStars using general Pins (APA102/LPD8806).
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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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class TwoWireBitBangImple
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{
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public:
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typedef NeoNoSettings SettingsObject;
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TwoWireBitBangImple(uint8_t pinClock, uint8_t pinData) :
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_pinClock(pinClock),
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_pinData(pinData)
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{
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pinMode(pinClock, OUTPUT);
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pinMode(pinData, OUTPUT);
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}
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~TwoWireBitBangImple()
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{
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pinMode(_pinClock, INPUT);
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pinMode(_pinData, INPUT);
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}
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void begin()
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{
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digitalWrite(_pinClock, LOW);
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digitalWrite(_pinData, LOW);
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}
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void beginTransaction()
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{
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}
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void endTransaction()
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{
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digitalWrite(_pinData, LOW);
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}
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void transmitByte(uint8_t data)
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{
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for (int bit = 7; bit >= 0; bit--)
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{
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// set data bit on pin
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digitalWrite(_pinData, (data & 0x80) == 0x80 ? HIGH : LOW);
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// set clock high as data is ready
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digitalWrite(_pinClock, HIGH);
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data <<= 1;
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// set clock low as data pin is changed
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digitalWrite(_pinClock, LOW);
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}
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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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const uint8_t* endData = data + dataSize;
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while (data < endData)
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{
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transmitByte(*data++);
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}
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}
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void applySettings(const SettingsObject& settings)
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{
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}
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private:
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const uint8_t _pinClock; // output pin number for clock line
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const uint8_t _pinData; // output pin number for data line
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}; |