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Document and publish Bluepad32 AIO firmware

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This commit is contained in:
Joey Yakimowich-Payne 2026-08-29 17:46:54 -06:00
commit 20c9c98f89
5 changed files with 73 additions and 10 deletions
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20
bluepad32_input_backend.cpp
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@ -60,7 +60,7 @@ void publish_state(const SwitchInputState& state, bool controller_active) {
critical_section_exit(&g_state_lock);
}
int32_t clamp_axis(int32_t value) {
constexpr int32_t clamp_axis(int32_t value) {
if (value < kAxisMinimum) {
return kAxisMinimum;
}
@ -70,7 +70,7 @@ int32_t clamp_axis(int32_t value) {
return value;
}
uint16_t scale_stick(int32_t value) {
constexpr uint16_t scale_stick(int32_t value) {
value = clamp_axis(value);
if (value <= 0) {
return static_cast<uint16_t>(
@ -80,7 +80,7 @@ uint16_t scale_stick(int32_t value) {
kStickMidpoint + (static_cast<int64_t>(value) * (UINT16_MAX - kStickMidpoint)) / kAxisMaximum);
}
int16_t clamp_int16(int64_t value) {
constexpr int16_t clamp_int16(int64_t value) {
if (value < INT16_MIN) {
return INT16_MIN;
}
@ -90,23 +90,31 @@ int16_t clamp_int16(int64_t value) {
return static_cast<int16_t>(value);
}
int64_t divide_round_nearest(int64_t numerator, int64_t denominator) {
constexpr int64_t divide_round_nearest(int64_t numerator, int64_t denominator) {
if (numerator >= 0) {
return (numerator + denominator / 2) / denominator;
}
return -((-numerator + denominator / 2) / denominator);
}
int16_t convert_accel(int64_t q13_value) {
constexpr int16_t convert_accel(int64_t q13_value) {
return clamp_int16(q13_value / 2);
}
int16_t convert_gyro(int64_t q10_value) {
constexpr int16_t convert_gyro(int64_t q10_value) {
constexpr int64_t kNumeratorScale = 13371;
constexpr int64_t kDenominator = 1024 * 936;
return clamp_int16(divide_round_nearest(q10_value * kNumeratorScale, kDenominator));
}
static_assert(scale_stick(-512) == 0);
static_assert(scale_stick(0) == 32768);
static_assert(scale_stick(511) == UINT16_MAX);
static_assert(convert_accel(8192) == 4096);
static_assert(convert_accel(-8192) == -4096);
static_assert(convert_gyro(1024) == 14);
static_assert(convert_gyro(-1024) == -14);
bool has_motion(const uni_gamepad_t& gamepad) {
for (size_t i = 0; i < 3; ++i) {
if (gamepad.accel[i] != 0 || gamepad.gyro[i] != 0) {