jacdac.led
Submodules
Package Contents
Classes
A controller for displays of individually controlled RGB LEDs. |
- class jacdac.led.LedClient(bus: jacdac.bus.Bus, role: str)
Bases:
jacdac.bus.Client- A controller for displays of individually controlled RGB LEDs.
For 64 or less LEDs, the service should support the pack the pixels in the pixels register.
Beyond this size, the register should return an empty payload as the amount of data exceeds
the size of a packet. Typically services that use more than 64 LEDs
will run on the same MCU and will maintain the pixels buffer internally.
Implements a client for the LED service.
- property pixels: bytes | None
A buffer of 24bit RGB color entries for each LED, in R, G, B order. When writing, if the buffer is too short, the remaining pixels are set to #000000; If the buffer is too long, the write may be ignored, or the additional pixels may be ignored. If the number of pixels is greater than max_pixels_length, the read should return an empty payload.,
- property brightness: float | None
Set the luminosity of the strip. At 0 the power to the strip is completely shut down., _: /
- property actual_brightness: float | None
This is the luminosity actually applied to the strip. May be lower than brightness if power-limited by the max_power register. It will rise slowly (few seconds) back to brightness is limits are no longer required., _: /
- property num_columns: int | None
(Optional) If the LED pixel strip is a matrix, specifies the number of columns., _: #
- property max_power: int | None
(Optional) Limit the power drawn by the light-strip (and controller)., _: mA
- property leds_per_pixel: int | None
(Optional) If known, specifies the number of LEDs in parallel on this device. The actual number of LEDs is num_pixels * leds_per_pixel., _: #
- property wave_length: int | None
(Optional) If monochrome LED, specifies the wave length of the LED. Register is missing for RGB LEDs., _: nm