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Fix support for Lizard Mode #216

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Fix support for Lizard Mode #216

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63 changes: 49 additions & 14 deletions SteamController/Devices/SteamControllerLizard.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,22 @@ namespace SteamController.Devices
{
public partial class SteamController
{
// Based on: https://github.com/torvalds/linux/blob/master/drivers/hid/hid-steam.c
public const byte ID_SET_DIGITAL_MAPPINGS = 0x80;
public const byte ID_CLEAR_DIGITAL_MAPPINGS = 0x81;
public const byte ID_SET_DEFAULT_DIGITAL_MAPPINGS = 0x85;
public const byte ID_FACTORY_RESET = 0x86;
public const byte ID_SET_SETTINGS_VALUES = 0x87;
public const byte ID_DEFAULT_MAPPINGS = 0x8e;

public const byte SETTING_LEFT_TRACKPAD_MODE = 7;
public const byte SETTING_RIGHT_TRACKPAD_MODE = 8;
public const byte SETTING_LEFT_TRACKPAD_CLICK_PRESSURE = 52;
public const byte SETTING_RIGHT_TRACKPAD_CLICK_PRESSURE = 53;
public const byte SETTING_STEAM_WATCHDOG_ENABLE = 71;

public const ushort TRACKPAD_NONE = 7;

private const int LizardModeUpdateInterval = 250;

public bool LizardMouse { get; set; } = true;
Expand All @@ -29,17 +45,20 @@ private void UpdateLizardMouse()
savedLizardMouse = LizardMouse;
lizardMouseUpdated = DateTime.Now;

// Enable or disable mouse emulation
if (LizardMouse)
{
//Enable mouse emulation
byte[] data = new byte[] { 0x8e, 0x00 };
neptuneDevice.RequestFeatureReport(data);
SendFeatureByte(ID_DEFAULT_MAPPINGS);
}
else
{
//Disable mouse emulation
byte[] data = new byte[] { 0x87, 0x03, 0x08, 0x07 };
neptuneDevice.RequestFeatureReport(data);
SendSettings(
(SETTING_LEFT_TRACKPAD_MODE, TRACKPAD_NONE), // disable mouse
(SETTING_RIGHT_TRACKPAD_MODE, TRACKPAD_NONE), // disable mouse
(SETTING_LEFT_TRACKPAD_CLICK_PRESSURE, 0xFFFF), // disable haptic click
(SETTING_RIGHT_TRACKPAD_CLICK_PRESSURE, 0xFFFF), // disable haptic click
(SETTING_STEAM_WATCHDOG_ENABLE, 0) // disable watchdog that tests if Steam is active
);
}
}

Expand All @@ -56,18 +75,34 @@ private void UpdateLizardButtons()
savedLizardButtons = LizardButtons;
lizardButtonUpdated = DateTime.Now;

// Enable / Disable esc, enter, cursors
if (LizardButtons)
{
//Enable keyboard/mouse button emulation
byte[] data = new byte[] { 0x85, 0x00 };
neptuneDevice.RequestFeatureReport(data);
}
SendFeatureByte(ID_SET_DEFAULT_DIGITAL_MAPPINGS);
else
SendFeatureByte(ID_CLEAR_DIGITAL_MAPPINGS);
}

private void SendFeatureByte(byte b)
{
neptuneDevice.RequestFeatureReport(new byte[] { b, 0 });
}

private void SendSettings(params (byte setting, ushort val)[] settings)
{
// Format: 0x87 len (reg valLo valHi)*
byte[] cmd = new byte[2 + settings.Length * 3];
cmd[0] = ID_SET_SETTINGS_VALUES;
cmd[1] = (byte)(settings.Length * 3); // length

int length = 2;
foreach (var (setting, val) in settings)
{
//Disable keyboard/mouse button emulation
byte[] data = new byte[] { 0x81, 0x00 };
neptuneDevice.RequestFeatureReport(data);
cmd[length++] = (byte)setting;
cmd[length++] = (byte)(val & 0xFF);
cmd[length++] = (byte)(val >> 8);
}

neptuneDevice.RequestFeatureReport(cmd);
}
}
}
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