83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
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// STL includes
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#include <cstring>
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#include <cstdio>
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#include <iostream>
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// Linux includes
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#include <fcntl.h>
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#include <sys/ioctl.h>
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// hyperion local includes
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#include "LedDeviceAdalightApa102.h"
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LedDeviceAdalightApa102::LedDeviceAdalightApa102(const std::string& outputDevice, const unsigned baudrate, int delayAfterConnect_ms) :
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LedRs232Device(outputDevice, baudrate, delayAfterConnect_ms),
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_ledBuffer(0),
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_timer()
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{
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// setup the timer
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_timer.setSingleShot(false);
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_timer.setInterval(5000);
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connect(&_timer, SIGNAL(timeout()), this, SLOT(rewriteLeds()));
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// start the timer
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_timer.start();
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}
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//comparing to ws2801 adalight, the following changes were needed:
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// 1- differnt data frame (4 bytes instead of 3)
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// 2 - in order to accomodate point 1 above, number of leds sent to adalight is increased by 1/3rd
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int LedDeviceAdalightApa102::write(const std::vector<ColorRgb> & ledValues)
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{
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ledCount = ledValues.size();
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const unsigned int startFrameSize = 4;
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const unsigned int endFrameSize = std::max<unsigned int>(((ledCount + 15) / 16), 4);
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const unsigned int mLedCount = (ledCount * 4) + startFrameSize + endFrameSize;
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if(_ledBuffer.size() != mLedCount+6){
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_ledBuffer.resize(mLedCount+6, 0x00);
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_ledBuffer[0] = 'A';
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_ledBuffer[1] = 'd';
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_ledBuffer[2] = 'a';
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_ledBuffer[3] = (((unsigned int)(ledValues.size())) >> 8) & 0xFF; // LED count high byte
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_ledBuffer[4] = ((unsigned int)(ledValues.size())) & 0xFF; // LED count low byte
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_ledBuffer[5] = _ledBuffer[3] ^ _ledBuffer[4] ^ 0x55; // Checksum
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}
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for (unsigned iLed=1; iLed<=ledCount; iLed++) {
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const ColorRgb& rgb = ledValues[iLed-1];
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_ledBuffer[iLed*4+6] = 0xFF;
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_ledBuffer[iLed*4+1+6] = rgb.red;
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_ledBuffer[iLed*4+2+6] = rgb.green;
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_ledBuffer[iLed*4+3+6] = rgb.blue;
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}
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// restart the timer
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_timer.start();
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// write data
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return writeBytes(_ledBuffer.size(), _ledBuffer.data());
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}
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int LedDeviceAdalightApa102::switchOff()
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{
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for (unsigned iLed=1; iLed<=ledCount; iLed++) {
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_ledBuffer[iLed*4+6] = 0xFF;
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_ledBuffer[iLed*4+1+6] = 0x00;
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_ledBuffer[iLed*4+2+6] = 0x00;
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_ledBuffer[iLed*4+3+6] = 0x00;
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}
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// restart the timer
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_timer.start();
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// write data
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return writeBytes(_ledBuffer.size(), _ledBuffer.data());
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}
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void LedDeviceAdalightApa102::rewriteLeds()
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{
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writeBytes(_ledBuffer.size(), _ledBuffer.data());
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}
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