hyperion.ng/libsrc/leddevice/LedDevicePiBlaster.h
2016-06-25 14:44:52 +02:00

66 lines
1.4 KiB
C++

#pragma once
// STL includes
#include <cstdio>
// jsoncpp includes
#include <json/json.h>
// Hyperion-Leddevice includes
#include <leddevice/LedDevice.h>
#include <utils/Logger.h>
class LedDevicePiBlaster : public LedDevice
{
public:
///
/// Constructs the PiBlaster device which writes to the indicated device and for the assigned
/// channels
/// @param deviceName The name of the output device
/// @param gpioMapping The RGB-Channel assignment json object
///
LedDevicePiBlaster(const std::string & deviceName, const Json::Value & gpioMapping);
virtual ~LedDevicePiBlaster();
///
/// Attempts to open the piblaster-device. This will only succeed if the device is not yet open
/// and the device is available.
///
/// @param report If true errors are writen to the standard error else silent
/// @return Zero on succes else negative
///
int open(bool report = true);
///
/// Writes the colors to the PiBlaster device
///
/// @param ledValues The color value for each led
///
/// @return Zero on success else negative
///
int write(const std::vector<ColorRgb> &ledValues);
///
/// Switches off the leds
///
/// @return Zero on success else negative
///
int switchOff();
private:
/// The name of the output device (very likely '/dev/pi-blaster')
const std::string _deviceName;
int _gpio_to_led[64];
char _gpio_to_color[64];
/// File-Pointer to the PiBlaster device
FILE * _fid;
/// logger instance
Logger* _log;
};