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Summary
SetBrightness(b uint8)method toDevicefor global brightness control (0–255, default 255)applyBrightness()helper that scales RGB channels using integer math (uint16multiply + bit shift to avoid float ops)writeColorsRGB,writeColorsRGBA, and the RP2040/RP2350 PIO path to apply brightness before writing each colorbrightnessfield defaults to255(full brightness), ensuring backwards-compatible behavior for existing usersTest plan
255SetBrightness(128)and confirm ~50% perceived brightnessSetBrightness(0)and confirm LEDs are offws.PutRGB