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89 lines
2.4 KiB
89 lines
2.4 KiB
2 years ago
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package driver
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import "image/draw"
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func DefaultConfig() *Config {
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return &Config{
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Rows: 32,
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Cols: 128,
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ChainLength: 1,
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Parallel: 1,
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PWMBits: 11,
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PWMLSBNanoseconds: 130,
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Brightness: 100,
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ScanMode: 0,
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}
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}
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// Config rgb-led-matrix configuration
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type Config struct {
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// Rows the number of rows supported by the display, so 32 or 16.
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Rows int
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// Cols the number of columns supported by the display, so 32 or 64 .
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Cols int
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// ChainLengthis the number of displays daisy-chained together
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// (output of one connected to input of next).
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ChainLength int
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// Parallel is the number of parallel chains connected to the Pi; in old Pis
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// with 26 GPIO pins, that is 1, in newer Pis with 40 interfaces pins, that
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// can also be 2 or 3. The effective number of pixels in vertical direction is
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// then thus rows * parallel.
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Parallel int
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// Set PWM bits used for output. Default is 11, but if you only deal with
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// limited comic-colors, 1 might be sufficient. Lower require less CPU and
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// increases refresh-rate.
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PWMBits int
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// Change the base time-unit for the on-time in the lowest significant bit in
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// nanoseconds. Higher numbers provide better quality (more accurate color,
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// less ghosting), but have a negative impact on the frame rate.
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PWMLSBNanoseconds int // the DMA channel to use
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// Brightness is the initial brightness of the panel in percent. Valid range
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// is 1..100
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Brightness int
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// ScanMode progressive or interlaced
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ScanMode int
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// Disable the PWM hardware subsystem to create pulses. Typically, you don't
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// want to disable hardware pulsing, this is mostly for debugging and figuring
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// out if there is interference with the sound system.
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// This won't do anything if output enable is not connected to GPIO 18 in
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// non-standard wirings.
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DisableHardwarePulsing bool
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ShowRefreshRate bool
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InverseColors bool
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// Name of GPIO mapping used
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HardwareMapping string
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}
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func (c *Config) Geometry() (width, height int) {
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return c.Cols * c.ChainLength, c.Rows * c.Parallel
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}
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type Matrix interface {
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draw.Image
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// Close the driver.
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Close() error
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// Name of the driver.
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Name() string
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// Swap the render buffer.
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Swap(leds []Color) (prev []Color, err error)
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// Render updates the display.
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Render() error
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// ColorDepth returns the number of color bits.
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ColorDepth() int
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}
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