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Assign colors per controller slot

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This commit is contained in:
Joey Yakimowich-Payne 2026-08-31 09:06:00 -06:00
commit 23a3cbade5
12 changed files with 330 additions and 51 deletions
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41
switch_pro_driver.h
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@ -50,6 +50,47 @@ typedef struct {
uint8_t imu_sample_count; // 0-3
SwitchImuSample imu_samples[3];
} SwitchInputState;
typedef struct {
uint8_t red;
uint8_t green;
uint8_t blue;
} SwitchRgbColor;
constexpr SwitchRgbColor switch_pro_calibrate_light_color(
SwitchRgbColor grip) {
const uint8_t minimum =
grip.red < grip.green
? (grip.red < grip.blue ? grip.red : grip.blue)
: (grip.green < grip.blue ? grip.green : grip.blue);
const uint8_t maximum =
grip.red > grip.green
? (grip.red > grip.blue ? grip.red : grip.blue)
: (grip.green > grip.blue ? grip.green : grip.blue);
const uint16_t chroma = static_cast<uint16_t>(maximum - minimum);
const uint16_t peak =
static_cast<uint16_t>((static_cast<uint16_t>(maximum) * 2u + 1u) /
3u);
if (chroma == 0) {
const uint8_t gray = static_cast<uint8_t>(peak);
return {gray, gray, gray};
}
const auto calibrate = [minimum, chroma, peak](uint8_t component) {
const uint32_t delta =
static_cast<uint32_t>(component - minimum);
return static_cast<uint8_t>(
(static_cast<uint32_t>(peak) * delta * delta) /
(static_cast<uint32_t>(chroma) * chroma));
};
return {calibrate(grip.red), calibrate(grip.green),
calibrate(grip.blue)};
}
// Return the configured Switch grip color and its automatically calibrated
// physical LED color for one HID/controller slot.
SwitchRgbColor switch_pro_get_slot_color(uint8_t instance);
SwitchRgbColor switch_pro_get_slot_light_color(uint8_t instance);
// Initialize one HID instance before entering the main loop.
void switch_pro_init(uint8_t instance);