hyperion.ng/libsrc/hyperion/LedDeviceLdp6803.h
johan e5395951a5 Fixed endianness issue in LDP6803 device
Former-commit-id: 6762890065d791f3ad5f24526f2f735822b451e1
2013-11-02 19:30:19 +01:00

43 lines
1.3 KiB
C++

#pragma once
// Local hyperion incluse
#include "LedSpiDevice.h"
///
/// Implementation of the LedDevice interface for writing to LDP6803 led device.
///
/// 00000000 00000000 00000000 00000000 1RRRRRGG GGGBBBBB 1RRRRRGG GGGBBBBB ...
/// |---------------------------------| |---------------| |---------------|
/// 32 zeros to start the frame Led1 Led2 ...
///
/// For each led, the first bit is always 1, and then you have 5 bits each for red, green and blue
/// (R, G and B in the above illustration) making 16 bits per led. Total bytes = 4 + (2 x number of
/// leds)
///
class LedDeviceLdp6803 : public LedSpiDevice
{
public:
///
/// Constructs the LedDevice for a string containing leds of the type LDP6803
///
/// @param[in] outputDevice The name of the output device (eg '/dev/spidev0.0')
/// @param[in] baudrate The used baudrate for writing to the output device
///
LedDeviceLdp6803(const std::string& outputDevice, const unsigned baudrate);
///
/// Writes the led color values to the led-device
///
/// @param ledValues The color-value per led
/// @return Zero on succes else negative
///
virtual int write(const std::vector<RgbColor> &ledValues);
/// Switch the leds off
virtual int switchOff();
private:
/// The buffer containing the packed RGB values
std::vector<uint8_t> _ledBuffer;
};