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Gyro degrees per second is 2000 across all 8bitdo controllers (#13147)

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This commit is contained in:
Aubrey Hesselgren
2025-05-29 14:28:55 -07:00
committed by GitHub
parent fc1c0618de
commit a26e5f32e0
1 changed files with 8 additions and 5 deletions
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13
src/joystick/hidapi/SDL_hidapi_8bitdo.c
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@@ -48,7 +48,9 @@ enum
#define SDL_8BITDO_BT_REPORTID_SDL_REPORTID 0x01 #define SDL_8BITDO_BT_REPORTID_SDL_REPORTID 0x01
#define ABITDO_ACCEL_SCALE 4096.f #define ABITDO_ACCEL_SCALE 4096.f
#define SENSOR_INTERVAL_NS 8000000ULL #define ABITDO_SENSOR_POLLING_RATE 125.f
#define SENSOR_INTERVAL_NS 8000000ULL
#define ABITDO_GYRO_MAX_DEGREES_PER_SECOND 2000.f
typedef struct typedef struct
{ {
@@ -67,7 +69,7 @@ typedef struct
float accelScale; float accelScale;
float gyroScale; float gyroScale;
Uint8 last_state[USB_PACKET_LENGTH]; Uint8 last_state[USB_PACKET_LENGTH];
Uint64 sensor_timestamp; // Microseconds. Simulate onboard clock. Advance by known rate: SENSOR_INTERVAL_NS == 8ms = 125 Hz Uint64 sensor_timestamp; // Nanoseconds. Simulate onboard clock. Advance by known rate: SENSOR_INTERVAL_NS == 8ms = 125 Hz
} SDL_Driver8BitDo_Context; } SDL_Driver8BitDo_Context;
#pragma pack(push,1) #pragma pack(push,1)
@@ -240,12 +242,13 @@ static bool HIDAPI_Driver8BitDo_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joys
joystick->nhats = 1; joystick->nhats = 1;
if (ctx->sensors_supported) { if (ctx->sensors_supported) {
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_GYRO, 125.0f); SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_GYRO, ABITDO_SENSOR_POLLING_RATE);
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_ACCEL, 125.0f); SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_ACCEL, ABITDO_SENSOR_POLLING_RATE);
ctx->accelScale = SDL_STANDARD_GRAVITY / ABITDO_ACCEL_SCALE; ctx->accelScale = SDL_STANDARD_GRAVITY / ABITDO_ACCEL_SCALE;
ctx->gyroScale = DEG2RAD(2048) / INT16_MAX; // Hardware senses +/- 2048 Degrees per second mapped to +/- INT16_MAX // Hardware senses +/- N Degrees per second mapped to +/- INT16_MAX
ctx->gyroScale = DEG2RAD(ABITDO_GYRO_MAX_DEGREES_PER_SECOND) / INT16_MAX;
} }
return true; return true;