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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <cstring>
#include "input_common/helpers/joycon_protocol/calibration.h"
#include "input_common/helpers/joycon_protocol/joycon_types.h"
namespace InputCommon::Joycon {
CalibrationProtocol::CalibrationProtocol(std::shared_ptr<JoyconHandle> handle)
: JoyconCommonProtocol(std::move(handle)) {}
DriverResult CalibrationProtocol::GetLeftJoyStickCalibration(JoyStickCalibration& calibration) {
ScopedSetBlocking sb(this);
DriverResult result{DriverResult::Success};
JoystickLeftSpiCalibration spi_calibration{};
bool has_user_calibration = false;
calibration = {};
if (result == DriverResult::Success) {
result = HasUserCalibration(SpiAddress::USER_LEFT_MAGIC, has_user_calibration);
}
// Read User defined calibration
if (result == DriverResult::Success && has_user_calibration) {
result = ReadSPI(SpiAddress::USER_LEFT_DATA, spi_calibration);
}
// Read Factory calibration
if (result == DriverResult::Success && !has_user_calibration) {
result = ReadSPI(SpiAddress::FACT_LEFT_DATA, spi_calibration);
}
if (result == DriverResult::Success) {
calibration.x.center = GetXAxisCalibrationValue(spi_calibration.center);
calibration.y.center = GetYAxisCalibrationValue(spi_calibration.center);
calibration.x.min = GetXAxisCalibrationValue(spi_calibration.min);
calibration.y.min = GetYAxisCalibrationValue(spi_calibration.min);
calibration.x.max = GetXAxisCalibrationValue(spi_calibration.max);
calibration.y.max = GetYAxisCalibrationValue(spi_calibration.max);
}
// Set a valid default calibration if data is missing
ValidateCalibration(calibration);
return result;
}
DriverResult CalibrationProtocol::GetRightJoyStickCalibration(JoyStickCalibration& calibration) {
ScopedSetBlocking sb(this);
DriverResult result{DriverResult::Success};
JoystickRightSpiCalibration spi_calibration{};
bool has_user_calibration = false;
calibration = {};
if (result == DriverResult::Success) {
result = HasUserCalibration(SpiAddress::USER_RIGHT_MAGIC, has_user_calibration);
}
// Read User defined calibration
if (result == DriverResult::Success && has_user_calibration) {
result = ReadSPI(SpiAddress::USER_RIGHT_DATA, spi_calibration);
}
// Read Factory calibration
if (result == DriverResult::Success && !has_user_calibration) {
result = ReadSPI(SpiAddress::FACT_RIGHT_DATA, spi_calibration);
}
if (result == DriverResult::Success) {
calibration.x.center = GetXAxisCalibrationValue(spi_calibration.center);
calibration.y.center = GetYAxisCalibrationValue(spi_calibration.center);
calibration.x.min = GetXAxisCalibrationValue(spi_calibration.min);
calibration.y.min = GetYAxisCalibrationValue(spi_calibration.min);
calibration.x.max = GetXAxisCalibrationValue(spi_calibration.max);
calibration.y.max = GetYAxisCalibrationValue(spi_calibration.max);
}
// Set a valid default calibration if data is missing
ValidateCalibration(calibration);
return result;
}
DriverResult CalibrationProtocol::GetImuCalibration(MotionCalibration& calibration) {
ScopedSetBlocking sb(this);
DriverResult result{DriverResult::Success};
ImuSpiCalibration spi_calibration{};
bool has_user_calibration = false;
calibration = {};
if (result == DriverResult::Success) {
result = HasUserCalibration(SpiAddress::USER_IMU_MAGIC, has_user_calibration);
}
// Read User defined calibration
if (result == DriverResult::Success && has_user_calibration) {
result = ReadSPI(SpiAddress::USER_IMU_DATA, spi_calibration);
}
// Read Factory calibration
if (result == DriverResult::Success && !has_user_calibration) {
result = ReadSPI(SpiAddress::FACT_IMU_DATA, spi_calibration);
}
if (result == DriverResult::Success) {
calibration.accelerometer[0].offset = spi_calibration.accelerometer_offset[0];
calibration.accelerometer[1].offset = spi_calibration.accelerometer_offset[1];
calibration.accelerometer[2].offset = spi_calibration.accelerometer_offset[2];
calibration.accelerometer[0].scale = spi_calibration.accelerometer_scale[0];
calibration.accelerometer[1].scale = spi_calibration.accelerometer_scale[1];
calibration.accelerometer[2].scale = spi_calibration.accelerometer_scale[2];
calibration.gyro[0].offset = spi_calibration.gyroscope_offset[0];
calibration.gyro[1].offset = spi_calibration.gyroscope_offset[1];
calibration.gyro[2].offset = spi_calibration.gyroscope_offset[2];
calibration.gyro[0].scale = spi_calibration.gyroscope_scale[0];
calibration.gyro[1].scale = spi_calibration.gyroscope_scale[1];
calibration.gyro[2].scale = spi_calibration.gyroscope_scale[2];
}
ValidateCalibration(calibration);
return result;
}
DriverResult CalibrationProtocol::GetRingCalibration(RingCalibration& calibration,
s16 current_value) {
constexpr s16 DefaultRingRange{800};
// TODO: Get default calibration form ring itself
if (ring_data_max == 0 && ring_data_min == 0) {
ring_data_max = current_value + DefaultRingRange;
ring_data_min = current_value - DefaultRingRange;
ring_data_default = current_value;
}
ring_data_max = std::max(ring_data_max, current_value);
ring_data_min = std::min(ring_data_min, current_value);
calibration = {
.default_value = ring_data_default,
.max_value = ring_data_max,
.min_value = ring_data_min,
};
return DriverResult::Success;
}
DriverResult CalibrationProtocol::HasUserCalibration(SpiAddress address,
bool& has_user_calibration) {
MagicSpiCalibration spi_magic{};
const DriverResult result{ReadSPI(address, spi_magic)};
has_user_calibration = false;
if (result == DriverResult::Success) {
has_user_calibration = spi_magic.first == CalibrationMagic::USR_MAGIC_0 &&
spi_magic.second == CalibrationMagic::USR_MAGIC_1;
}
return result;
}
u16 CalibrationProtocol::GetXAxisCalibrationValue(std::span<u8> block) const {
return static_cast<u16>(((block[1] & 0x0F) << 8) | block[0]);
}
u16 CalibrationProtocol::GetYAxisCalibrationValue(std::span<u8> block) const {
return static_cast<u16>((block[2] << 4) | (block[1] >> 4));
}
void CalibrationProtocol::ValidateCalibration(JoyStickCalibration& calibration) {
constexpr u16 DefaultStickCenter{0x800};
constexpr u16 DefaultStickRange{0x6cc};
calibration.x.center = ValidateValue(calibration.x.center, DefaultStickCenter);
calibration.x.max = ValidateValue(calibration.x.max, DefaultStickRange);
calibration.x.min = ValidateValue(calibration.x.min, DefaultStickRange);
calibration.y.center = ValidateValue(calibration.y.center, DefaultStickCenter);
calibration.y.max = ValidateValue(calibration.y.max, DefaultStickRange);
calibration.y.min = ValidateValue(calibration.y.min, DefaultStickRange);
}
void CalibrationProtocol::ValidateCalibration(MotionCalibration& calibration) {
constexpr s16 DefaultAccelerometerScale{0x4000};
constexpr s16 DefaultGyroScale{0x3be7};
constexpr s16 DefaultOffset{0};
for (auto& sensor : calibration.accelerometer) {
sensor.scale = ValidateValue(sensor.scale, DefaultAccelerometerScale);
sensor.offset = ValidateValue(sensor.offset, DefaultOffset);
}
for (auto& sensor : calibration.gyro) {
sensor.scale = ValidateValue(sensor.scale, DefaultGyroScale);
sensor.offset = ValidateValue(sensor.offset, DefaultOffset);
}
}
u16 CalibrationProtocol::ValidateValue(u16 value, u16 default_value) const {
if (value == 0) {
return default_value;
}
if (value == 0xFFF) {
return default_value;
}
return value;
}
s16 CalibrationProtocol::ValidateValue(s16 value, s16 default_value) const {
if (value == 0) {
return default_value;
}
if (value == 0xFFF) {
return default_value;
}
return value;
}
} // namespace InputCommon::Joycon
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