60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
#pragma once
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// STL includes
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#include <string>
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// Linux-SPI includes
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#include <linux/spi/spidev.h>
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// hyperion incluse
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#include <hyperion/LedDevice.h>
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///
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/// Implementation of the LedDevice interface for writing to Ws2801 led device.
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///
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class LedDeviceWs2801 : public LedDevice
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{
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public:
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///
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/// Constructs the LedDevice for a string containing leds of the type Ws2801
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///
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/// @param outputDevice The name of the output device (eg '/etc/SpiDev.0.0')
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/// @param baudrate The used baudrate for writing to the output device
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///
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LedDeviceWs2801(const std::string& outputDevice,
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const unsigned baudrate);
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///
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/// Destructor of the LedDevice; closes the output device if it is open
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///
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virtual ~LedDeviceWs2801();
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///
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/// Opens and configures the output device
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///
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/// @return Zero on succes else negative
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///
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int open();
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///
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/// Writes the led color values to the led-device
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///
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/// @param ledValues The color-value per led
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/// @return Zero on succes else negative
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///
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virtual int write(const std::vector<RgbColor> &ledValues);
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private:
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/// The name of the output device
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const std::string mDeviceName;
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/// The used baudrate of the output device
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const int mBaudRate_Hz;
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/// The File Identifier of the opened output device (or -1 if not opened)
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int mFid;
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/// The transfer structure for writing to the spi-device
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spi_ioc_transfer spi;
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/// The 'latch' time for latching the shifted-value into the leds
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timespec latchTime;
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};
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