Kernel driver for STMicroelectronics LED1202Âķ

/sys/class/leds/<led>/hw_patternÂķ

Specify a hardware pattern for the ST1202 LED. The LED controller implements 12 low-side current generators with independent dimming control. Internal volatile memory allows the user to store up to 8 different patterns. Each pattern is a particular output configuration in terms of PWM duty-cycle and duration (ms).

To be compatible with the hardware pattern format, maximum 8 tuples of brightness (PWM) and duration must be written to hw_pattern.

  • Brightness range: 0-255

  • Min pattern duration: 22 ms

  • Max pattern duration: 5610 ms

The format of the hardware pattern values should be: “brightness duration brightness duration ...”

/sys/class/leds/<led>/repeatÂķ

Specify a pattern repeat number, which is common for all channels. Default is 1. Writing 0 is invalid. Writing -1 or 255 repeats the pattern indefinitely.

This file will always return the originally written repeat number.