hyperion.ng/libsrc/leddevice/LedDeviceWs2812SPI.cpp
redPanther d679affeb4 Leddevice rework2 (#193)
* commit debug code to save it due to merge

* migrate first devices to new device registry and configure on runtime

* fadecandy and rs232 resets device if config is set

* try to hunt crash on osx

* test commit if this works with osx

* refactor spi devices

* cleanup

* refactor leddevices file, tinkerforge and ws2812b

* refactor raw usb devices

* refactor udp devices

* - add tpm2net driver
- remove old udp driver from build (files left in place for reference for new udp driver)
- json serverinfo shows available leddevices

* finish rework part 2 of leddevices

* add schemas for leddevices.
currently only compiled in, but not usedx
2016-08-23 20:07:12 +02:00

68 lines
1.4 KiB
C++

// STL includes
#include <cstring>
#include <cstdio>
#include <iostream>
// Linux includes
#include <fcntl.h>
#include <sys/ioctl.h>
// hyperion local includes
#include "LedDeviceWs2812SPI.h"
LedDeviceWs2812SPI::LedDeviceWs2812SPI(const Json::Value &deviceConfig)
: LedSpiDevice(deviceConfig)
, bitpair_to_byte {
0b10001000,
0b10001100,
0b11001000,
0b11001100,
}
{
}
LedDevice* LedDeviceWs2812SPI::construct(const Json::Value &deviceConfig)
{
return new LedDeviceWs2812SPI(deviceConfig);
}
int LedDeviceWs2812SPI::write(const std::vector<ColorRgb> &ledValues)
{
_ledCount = ledValues.size();
// 3 colours, 4 spi bytes per colour + 3 frame end latch bytes
const int SPI_BYTES_PER_LED = 3 * 4;
unsigned spi_size = _ledCount * SPI_BYTES_PER_LED + 3;
if(_ledBuffer.size() != spi_size)
{
_ledBuffer.resize(spi_size, 0x00);
}
unsigned spi_ptr = 0;
for (unsigned i=0; i< (unsigned)_ledCount; ++i)
{
uint32_t colorBits = ((unsigned int)ledValues[i].red << 16)
| ((unsigned int)ledValues[i].green << 8)
| ledValues[i].blue;
for (int j=SPI_BYTES_PER_LED - 1; j>=0; j--)
{
_ledBuffer[spi_ptr+j] = bitpair_to_byte[ colorBits & 0x3 ];
colorBits >>= 2;
}
spi_ptr += SPI_BYTES_PER_LED;
}
_ledBuffer[spi_ptr++] = 0;
_ledBuffer[spi_ptr++] = 0;
_ledBuffer[spi_ptr++] = 0;
return writeBytes(spi_size, _ledBuffer.data());
}
int LedDeviceWs2812SPI::switchOff()
{
return write(std::vector<ColorRgb>(_ledCount, ColorRgb{0,0,0}));
}