define a custom button combo to a GPIO pin

this expands GpioMappingInfo to include dpad and button masks and uses those masks when setting up the button maps in Gamepad. this allows for a GPIO pin to trigger any arbitrary set of buttons
bsstephan · Mar 25, 2024 · 26bbcbe · 26bbcbe
1 parent 55fb9e5
commit 26bbcbe
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diff --git a/proto/config.proto b/proto/config.proto
@@ -168,6 +168,8 @@ message PinMappings
 message GpioMappingInfo
 {
     optional GpioAction action = 1;
+    optional uint32 customDpadMask = 2;
+    optional uint32 customButtonMask = 3;
 }
 
 message GpioMappings

diff --git a/proto/enums.proto b/proto/enums.proto
@@ -208,6 +208,7 @@ enum GpioAction
     SUSTAIN_SOCD_MODE_FIRST_WIN  = 30;
     SUSTAIN_SOCD_MODE_BYPASS     = 31;
     BUTTON_PRESS_TURBO           = 32;
+    CUSTOM_BUTTON_COMBO          = 33;
 }
 
 enum GamepadHotkey

diff --git a/src/gamepad.cpp b/src/gamepad.cpp
@@ -55,6 +55,27 @@ void Gamepad::setup()
 	mapButtonA2  = new GamepadButtonMapping(GAMEPAD_MASK_A2);
 	mapButtonFn  = new GamepadButtonMapping(AUX_MASK_FUNCTION);
 
+	const auto assignCustomMappingToMaps = [&](GpioMappingInfo mapInfo, Pin_t pin) -> void {
+		if (mapDpadUp->buttonMask & mapInfo.customDpadMask)	mapDpadUp->pinMask |= 1 << pin;
+		if (mapDpadDown->buttonMask & mapInfo.customDpadMask)	mapDpadDown->pinMask |= 1 << pin;
+		if (mapDpadLeft->buttonMask & mapInfo.customDpadMask)	mapDpadLeft->pinMask |= 1 << pin;
+		if (mapDpadRight->buttonMask & mapInfo.customDpadMask)	mapDpadRight->pinMask |= 1 << pin;
+		if (mapButtonB1->buttonMask & mapInfo.customButtonMask)	mapButtonB1->pinMask |= 1 << pin;
+		if (mapButtonB2->buttonMask & mapInfo.customButtonMask)	mapButtonB2->pinMask |= 1 << pin;
+		if (mapButtonB3->buttonMask & mapInfo.customButtonMask)	mapButtonB3->pinMask |= 1 << pin;
+		if (mapButtonB4->buttonMask & mapInfo.customButtonMask)	mapButtonB4->pinMask |= 1 << pin;
+		if (mapButtonL1->buttonMask & mapInfo.customButtonMask)	mapButtonL1->pinMask |= 1 << pin;
+		if (mapButtonR1->buttonMask & mapInfo.customButtonMask)	mapButtonR1->pinMask |= 1 << pin;
+		if (mapButtonL2->buttonMask & mapInfo.customButtonMask)	mapButtonL2->pinMask |= 1 << pin;
+		if (mapButtonR2->buttonMask & mapInfo.customButtonMask)	mapButtonR2->pinMask |= 1 << pin;
+		if (mapButtonS1->buttonMask & mapInfo.customButtonMask)	mapButtonS1->pinMask |= 1 << pin;
+		if (mapButtonS2->buttonMask & mapInfo.customButtonMask)	mapButtonS2->pinMask |= 1 << pin;
+		if (mapButtonL3->buttonMask & mapInfo.customButtonMask)	mapButtonL3->pinMask |= 1 << pin;
+		if (mapButtonR3->buttonMask & mapInfo.customButtonMask)	mapButtonR3->pinMask |= 1 << pin;
+		if (mapButtonA1->buttonMask & mapInfo.customButtonMask)	mapButtonA1->pinMask |= 1 << pin;
+		if (mapButtonA2->buttonMask & mapInfo.customButtonMask)	mapButtonA2->pinMask |= 1 << pin;
+	};
+
 	for (Pin_t pin = 0; pin < (Pin_t)NUM_BANK0_GPIOS; pin++)
 	{
 		switch (pinMappings[pin].action) {
@@ -77,6 +98,7 @@ void Gamepad::setup()
 			case GpioAction::BUTTON_PRESS_A1:	mapButtonA1->pinMask |= 1 << pin; break;
 			case GpioAction::BUTTON_PRESS_A2:	mapButtonA2->pinMask |= 1 << pin; break;
 			case GpioAction::BUTTON_PRESS_FN:	mapButtonFn->pinMask |= 1 << pin; break;
+			case GpioAction::CUSTOM_BUTTON_COMBO:	assignCustomMappingToMaps(pinMappings[pin], pin); break;
 			default:				break;
 		}
 	}