110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
#include "LedDeviceDMX.h"
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#include <QSerialPort>
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#ifndef _WIN32
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#include <time.h>
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#endif
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LedDeviceDMX::LedDeviceDMX(const QJsonObject &deviceConfig)
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: ProviderRs232(deviceConfig)
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, _dmxDeviceType(0)
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, _dmxStart(1)
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, _dmxSlotsPerLed(3)
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, _dmxLedCount(0)
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, _dmxChannelCount(0)
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{
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}
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LedDevice* LedDeviceDMX::construct(const QJsonObject &deviceConfig)
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{
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return new LedDeviceDMX(deviceConfig);
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}
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bool LedDeviceDMX::init(const QJsonObject &deviceConfig)
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{
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bool isInitOK = false;
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// Initialise sub-class
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if ( ProviderRs232::init(deviceConfig) )
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{
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QString dmxTypeString = deviceConfig["dmxtype"].toString("invalid");
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if (dmxTypeString == "raw")
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{
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_dmxDeviceType = 0;
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_dmxStart = 1;
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_dmxSlotsPerLed = 3;
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}
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else if (dmxTypeString == "McCrypt")
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{
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_dmxDeviceType = 1;
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_dmxStart = 1;
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_dmxSlotsPerLed = 4;
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}
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else
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{
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QString errortext = QString ("unknown dmx device type: %1").arg(dmxTypeString);
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this->setInError(errortext);
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return false;
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}
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Debug(_log, "_dmxTypeString \"%s\", _dmxDeviceType %d", QSTRING_CSTR(dmxTypeString), _dmxDeviceType );
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_rs232Port.setStopBits(QSerialPort::TwoStop);
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_dmxLedCount = qMin(static_cast<int>(_ledCount), 512/_dmxSlotsPerLed);
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_dmxChannelCount = 1 + _dmxSlotsPerLed * _dmxLedCount;
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Debug(_log, "_dmxStart %d, _dmxSlotsPerLed %d", _dmxStart, _dmxSlotsPerLed);
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Debug(_log, "_ledCount %d, _dmxLedCount %d, _dmxChannelCount %d", _ledCount, _dmxLedCount, _dmxChannelCount);
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_ledBuffer.resize(_dmxChannelCount, 0);
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_ledBuffer[0] = 0x00; // NULL START code
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isInitOK = true;
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}
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return isInitOK;
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}
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int LedDeviceDMX::write(const std::vector<ColorRgb> &ledValues)
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{
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switch (_dmxDeviceType) {
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case 0:
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memcpy(_ledBuffer.data()+1, ledValues.data(), _dmxChannelCount-1);
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break;
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case 1:
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int l =_dmxStart;
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for (int d=0; d<_dmxLedCount; d++)
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{
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_ledBuffer[l++] = ledValues[d].red;
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_ledBuffer[l++] = ledValues[d].green;
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_ledBuffer[l++] = ledValues[d].blue;
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_ledBuffer[l++] = 255;
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}
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break;
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}
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_rs232Port.setBreakEnabled(true);
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// Note Windows: There is no concept of ns sleeptime, the closest possible is 1ms but requested is 0,000176ms
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#ifndef _WIN32
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nanosleep((const struct timespec[]){{0, 176000L}}, NULL); // 176 uSec break time
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#endif
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_rs232Port.setBreakEnabled(false);
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#ifndef _WIN32
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nanosleep((const struct timespec[]){{0, 12000L}}, NULL); // 176 uSec make after break time
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#endif
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#undef uberdebug
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#ifdef uberdebug
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printf ("Writing %d bytes", _dmxChannelCount);
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for (unsigned int i=0; i < _dmxChannelCount; i++)
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{
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if (i%32 == 0) {
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printf ("\n%04x: ", i);
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}
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printf ("%02x ", _ledBuffer[i]);
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}
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printf ("\n");
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#endif
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return writeBytes(_dmxChannelCount, _ledBuffer.data());
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}
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