mirror of
https://github.com/hyperion-project/hyperion.ng.git
synced 2023-10-10 13:36:59 +02:00
5a902add81
* Added "invert" and "spimode" options to ws2801, ws2812spi and sk6812spi devices * fixed test/TestSpi.cpp * some coding style wish
66 lines
1.6 KiB
C++
66 lines
1.6 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 std::string& outputDevice, const unsigned baudrate,
|
|
const int spiMode, const bool spiDataInvert)
|
|
: LedSpiDevice(outputDevice, baudrate, 0, spiMode, spiDataInvert)
|
|
, mLedCount(0)
|
|
, bitpair_to_byte {
|
|
0b10001000,
|
|
0b10001100,
|
|
0b11001000,
|
|
0b11001100,
|
|
}
|
|
|
|
{
|
|
// empty
|
|
}
|
|
|
|
int LedDeviceWs2812SPI::write(const std::vector<ColorRgb> &ledValues)
|
|
{
|
|
mLedCount = ledValues.size();
|
|
|
|
// 3 colours, 4 spi bytes per colour + 3 frame end latch bytes
|
|
#define COLOURS_PER_LED 3
|
|
#define SPI_BYTES_PER_COLOUR 4
|
|
#define SPI_BYTES_PER_LED COLOURS_PER_LED * SPI_BYTES_PER_COLOUR
|
|
|
|
unsigned spi_size = mLedCount * SPI_BYTES_PER_LED + 3;
|
|
if(_spiBuffer.size() != spi_size){
|
|
_spiBuffer.resize(spi_size, 0x00);
|
|
}
|
|
|
|
unsigned spi_ptr = 0;
|
|
for (unsigned i=0; i< mLedCount; ++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--) {
|
|
_spiBuffer[spi_ptr+j] = bitpair_to_byte[ colorBits & 0x3 ];
|
|
colorBits >>= 2;
|
|
}
|
|
spi_ptr += SPI_BYTES_PER_LED;
|
|
}
|
|
_spiBuffer[spi_ptr++] = 0;
|
|
_spiBuffer[spi_ptr++] = 0;
|
|
_spiBuffer[spi_ptr++] = 0;
|
|
|
|
return writeBytes(spi_size, _spiBuffer.data());
|
|
}
|
|
|
|
int LedDeviceWs2812SPI::switchOff()
|
|
{
|
|
return write(std::vector<ColorRgb>(mLedCount, ColorRgb{0,0,0}));
|
|
}
|