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Fix horribly broken accelerometer emulation.

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It now emulates the least significant bits.
And it no longer treats maximum acceleration in one direction as being in the opposite direction.
This commit is contained in:
CarlKenner
2015-01-30 12:38:21 +10:30
parent b92eb03d26
commit fb370110dc
2 changed files with 32 additions and 18 deletions
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25
Source/Core/Core/HW/WiimoteEmu/Attachment/Nunchuk.cpp
View File

@ -87,23 +87,30 @@ void Nunchuk::GetState(u8* const data)
// flip the button bits :/ // flip the button bits :/
ncdata->bt.hex ^= 0x03; ncdata->bt.hex ^= 0x03;
u16 accel_x = (u16)(accel.x * ACCEL_RANGE + ACCEL_ZERO_G); // We now use 2 bits more precision, so multiply by 4 before converting to int
u16 accel_y = (u16)(accel.y * ACCEL_RANGE + ACCEL_ZERO_G); s16 accel_x = (s16)(4 * (accel.x * ACCEL_RANGE + ACCEL_ZERO_G));
u16 accel_z = (u16)(accel.z * ACCEL_RANGE + ACCEL_ZERO_G); s16 accel_y = (s16)(4 * (accel.y * ACCEL_RANGE + ACCEL_ZERO_G));
s16 accel_z = (s16)(4 * (accel.z * ACCEL_RANGE + ACCEL_ZERO_G));
if (accel_x > 1024) if (accel_x > 1024)
accel_x = 1024; accel_x = 1024;
else if (accel_x < 0)
accel_x = 0;
if (accel_y > 1024) if (accel_y > 1024)
accel_y = 1024; accel_y = 1024;
else if (accel_y < 0)
accel_y = 0;
if (accel_z > 1024) if (accel_z > 1024)
accel_z = 1024; accel_z = 1024;
else if (accel_z < 0)
accel_z = 0;
ncdata->ax = accel_x & 0xFF; ncdata->ax = (accel_x >> 2) & 0xFF;
ncdata->ay = accel_y & 0xFF; ncdata->ay = (accel_y >> 2) & 0xFF;
ncdata->az = accel_z & 0xFF; ncdata->az = (accel_z >> 2) & 0xFF;
ncdata->passthrough_data.acc_x_lsb = accel_x >> 8 & 0x3; ncdata->bt.acc_x_lsb = accel_x & 0x3;
ncdata->passthrough_data.acc_y_lsb = accel_y >> 8 & 0x3; ncdata->bt.acc_y_lsb = accel_y & 0x3;
ncdata->passthrough_data.acc_z_lsb = accel_z >> 8 & 0x3; ncdata->bt.acc_z_lsb = accel_z & 0x3;
} }
void Nunchuk::LoadDefaults(const ControllerInterface& ciface) void Nunchuk::LoadDefaults(const ControllerInterface& ciface)

25
Source/Core/Core/HW/WiimoteEmu/WiimoteEmu.cpp
View File

@ -396,24 +396,31 @@ void Wiimote::GetAccelData(u8* const data, const ReportFeatures& rptf)
wm_accel& accel = *(wm_accel*)(data + rptf.accel); wm_accel& accel = *(wm_accel*)(data + rptf.accel);
wm_buttons& core = *(wm_buttons*)(data + rptf.core); wm_buttons& core = *(wm_buttons*)(data + rptf.core);
u16 x = (u16)(m_accel.x * ACCEL_RANGE + ACCEL_ZERO_G); // We now use 2 bits more precision, so multiply by 4 before converting to int
u16 y = (u16)(m_accel.y * ACCEL_RANGE + ACCEL_ZERO_G); s16 x = (s16)(4 * (m_accel.x * ACCEL_RANGE + ACCEL_ZERO_G));
u16 z = (u16)(m_accel.z * ACCEL_RANGE + ACCEL_ZERO_G); s16 y = (s16)(4 * (m_accel.y * ACCEL_RANGE + ACCEL_ZERO_G));
s16 z = (s16)(4 * (m_accel.z * ACCEL_RANGE + ACCEL_ZERO_G));
if (x > 1024) if (x > 1024)
x = 1024; x = 1024;
else if (x < 0)
x = 0;
if (y > 1024) if (y > 1024)
y = 1024; y = 1024;
else if (y < 0)
y = 0;
if (z > 1024) if (z > 1024)
z = 1024; z = 1024;
else if (z < 0)
z = 0;
accel.x = x & 0xFF; accel.x = (x >> 2) & 0xFF;
accel.y = y & 0xFF; accel.y = (y >> 2) & 0xFF;
accel.z = z & 0xFF; accel.z = (z >> 2) & 0xFF;
core.acc_x_lsb = x >> 8 & 0x3; core.acc_x_lsb = x & 0x3;
core.acc_y_lsb = y >> 8 & 0x1; core.acc_y_lsb = (y >> 1) & 0x1;
core.acc_z_lsb = z >> 8 & 0x1; core.acc_z_lsb = (z >> 1) & 0x1;
} }
#define kCutoffFreq 5.0 #define kCutoffFreq 5.0
inline void LowPassFilter(double & var, double newval, double period) inline void LowPassFilter(double & var, double newval, double period)