hyperion.ng/libsrc/leddevice/LedDeviceAPA102.h
penfold42 c17e4894d9 Apa102 fix if the led strip has more physical LEDs than you want to configure with hyperion (#626)
* Removed -HUP so the default -TERM signal is sent instead.
- hyperiond only listens for TERM and INT. HUP is often used to get an exe to reread its config

Changed pgrep to add '-x' so it wont partial match on the exe name.
- I have multiple instances with multiple hyperiond-instance1 names
- this ensures the service script only kills the right process

* reversing errant change to hyperion.systemd.sh

* started bug fixes for APA strips with more physical leds than configured

* 1st cut of changes to APA102.

now looks at config for "leds" which is the # of hardware leds in the strip.
This enables us to write the correct trailer length in the packet.

Also fixed a bug where switchoff was writing the wrong # of leds

* removed commented out old code

removed debug printf

* included prebuild test binary for Pi2

* Second attempt at the fix.
BEFORE:
If you have more physcial LEDs than defined in the "leds" "index" section of the config there is random junk added to the end of the strip.

WITH THIS FIX:
In the "device" section specify the number of physical leds with:
 "leds" : 212,
If this is greater than the number of led indexes, additional LEDs are set to black
If this is smaller than the number of led indexes, it is ignored

* included test binary

* Clean exit if the device config is missing or a non-supported device type is specified

Former-commit-id: 8ae96188fa74d91b13a921e7d5faf6d6ac1c42ee
2016-05-10 12:16:19 +02:00

46 lines
1.0 KiB
C++

#pragma once
// STL includes
#include <string>
// hyperion incluse
#include "LedSpiDevice.h"
///
/// Implementation of the LedDevice interface for writing to APA102 led device.
///
/// APA102 is
///
class LedDeviceAPA102 : public LedSpiDevice
{
public:
///
/// Constructs the LedDevice for a string containing leds of the type APA102
///
/// @param outputDevice The name of the output device (eg '/etc/SpiDev.0.0')
/// @param baudrate The used baudrate for writing to the output device
///
LedDeviceAPA102(const std::string& outputDevice,
const unsigned baudrate, const unsigned ledcount );
///
/// 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<ColorRgb> &ledValues);
/// Switch the leds off
virtual int switchOff();
private:
/// The buffer containing the packed RGB values
std::vector<uint8_t> _ledBuffer;
unsigned int _HW_ledcount;
unsigned int _mLedCount;
};