mirror of
https://github.com/hyperion-project/hyperion.ng.git
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ed5455458b
* Handle Exceptions in main & Pythoninit * Have SSDPDiscover generic again * Have SSDPDiscover generic again * Change Info- to Debug logs as technical service messages * Nanoleaf - When switched on, ensure UDP mode * Include SQL Database in Cross-Compile instructions * Fix Clazy (QT code checker) and clang Warnings * Stop LedDevice:write for disabled device * Nanoleaf: Fix uint printfs * NanoLeaf: Fix indents to tabs * NanoLeaf - Add debug verbosity switches * Device switchability support, FileDevice with timestamp support * Nanoleaf Light Panels now support External Control V2 * Enhance LedDeviceFile by Timestamp + fix readyness * Stop color stream, if LedDevice disabled * Nanoleaf - remove switchability * Fix MultiColorAdjustment, if led-range is greater lednum * Fix logging * LedFileDevice/LedDevice - add testing support * New "Led Test" effect * LedDeviceFile - Add chrono include + Allow Led rewrites for testing * Stabilize Effects for LedDevices where latchtime = 0 * Update LedDeviceFile, allow latchtime = 0 * Distangle LinearColorSmoothing and LEDDevice, Fix Effect configuration updates * Updates LedDeviceFile - Initialize via Open * Updates LedDeviceNanoleaf - Initialize via Open, Remove throwing exceptions * Updates ProviderUDP - Remove throwing exceptions * Framebuffer - Use precise timer * TestSpi - Align to LedDevice updates * Pretty Print CrossCompileHowTo as markdown-file * Ensure that output is only written when LedDevice is ready * Align APA102 Device to new device staging * Logger - Remove clang warnings on extra semicolon * Devices SPI - Align to Device stages and methods * Fix cppcheck and clang findings * Add Code-Template for new Devices * Align devices to stages and methods, clean-up some code * Allow to reopen LedDevice without restart * Revert change "Remove Connect (PriorityMuxer::visiblePriorityChanged -> Hyperion::update) due to double writes" * Remove visiblePriorityChanged from LedDevice to decouple LedDevice from hyperion logic * Expose LedDevice getLedCount and align signedness
97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
#include "LedDeviceWs2812SPI.h"
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/*
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From the data sheet:
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(TH+TL=1.25μs±600ns)
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T0H, 0 code, high level time, 0.40µs ±0.150ns
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T0L, 0 code, low level time, 0.85µs ±0.150ns
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T1H, 1 code, high level time, 0.80µs ±0.150ns
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T1L, 1 code, low level time, 0.45µs ±0.150ns
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WT, Wait for the processing time, NA
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Trst, Reset code,low level time, 50µs (not anymore... need 300uS for latest revision)
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To normalise the pulse times so they fit in 4 SPI bits:
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On the assumption that the "low" time doesnt matter much
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A SPI bit time of 0.40uS = 2.5 Mbit/sec
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T0 is sent as 1000
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T1 is sent as 1100
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With a bit of excel testing, we can work out the maximum and minimum speeds:
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2106000 MIN
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2590500 AVG
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3075000 MAX
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Wait time:
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Not Applicable for WS2812
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Reset time:
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using the max of 3075000, the bit time is 0.325
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Reset time is 300uS = 923 bits = 116 bytes
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*/
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LedDeviceWs2812SPI::LedDeviceWs2812SPI(const QJsonObject &deviceConfig)
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: ProviderSpi()
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, SPI_BYTES_PER_COLOUR(4)
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, SPI_FRAME_END_LATCH_BYTES(116)
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, bitpair_to_byte {
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0b10001000,
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0b10001100,
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0b11001000,
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0b11001100,
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}
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{
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_devConfig = deviceConfig;
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_deviceReady = false;
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}
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LedDevice* LedDeviceWs2812SPI::construct(const QJsonObject &deviceConfig)
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{
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return new LedDeviceWs2812SPI(deviceConfig);
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}
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bool LedDeviceWs2812SPI::init(const QJsonObject &deviceConfig)
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{
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_baudRate_Hz = 2600000;
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bool isInitOK = ProviderSpi::init(deviceConfig);
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if ( isInitOK )
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{
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WarningIf(( _baudRate_Hz < 2106000 || _baudRate_Hz > 3075000 ), _log, "SPI rate %d outside recommended range (2106000 -> 3075000)", _baudRate_Hz);
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_ledBuffer.resize(_ledRGBCount * SPI_BYTES_PER_COLOUR + SPI_FRAME_END_LATCH_BYTES, 0x00);
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}
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return isInitOK;
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}
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int LedDeviceWs2812SPI::write(const std::vector<ColorRgb> &ledValues)
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{
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unsigned spi_ptr = 0;
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const int SPI_BYTES_PER_LED = sizeof(ColorRgb) * SPI_BYTES_PER_COLOUR;
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for (const ColorRgb& color : ledValues)
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{
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uint32_t colorBits = ((unsigned int)color.red << 16)
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| ((unsigned int)color.green << 8)
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| color.blue;
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for (int j=SPI_BYTES_PER_LED - 1; j>=0; j--)
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{
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_ledBuffer[spi_ptr+j] = bitpair_to_byte[ colorBits & 0x3 ];
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colorBits >>= 2;
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}
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spi_ptr += SPI_BYTES_PER_LED;
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}
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for (int j=0; j < SPI_FRAME_END_LATCH_BYTES; j++)
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{
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_ledBuffer[spi_ptr++] = 0;
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}
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return writeBytes(_ledBuffer.size(), _ledBuffer.data());
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}
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