Wii extension controller support

CMakeLists.txt

@@ -125,6 +125,7 @@ src/addons/ps4mode.cpp
 src/addons/reverse.cpp
 src/addons/turbo.cpp
 src/addons/slider_socd.cpp
+src/addons/wiiext.cpp
 src/gamepad/GamepadDebouncer.cpp
 src/gamepad/GamepadDescriptors.cpp
 )
@@ -147,6 +148,7 @@ OneBitDisplay
 ArduinoJson
 rndis
 hardware_adc
+WiiExtension
 pico_mbedtls
 TinyUSB_Gamepad
 )

docs/web-configurator.md

@@ -222,6 +222,37 @@ Enabling this add-on will allow you to use GP2040-CE on a PS4 with an 8 minute t
 * `Serial Number (16 Bytes in Hex Ascii)` - Choose your serial number file.
 * `Signature (256 Bytes in Binary)` - Choose your signature file.
 
+### Wii Extensions
+
+![GP2040 Configurator - Wii Extensions](assets/images/gpc-add-ons-wii-extensions.png)
+
+* `I2C SDA Pin` - The GPIO pin used for Wii Extension SDA.
+* `I2C SCL Pin` - The GPIO pin used for Wii Extension SCL.
+* `I2C Block` - The block of I2C to use (i2c0 or i2c1).
+* `I2C Speed` - Sets the speed of I2C communication. Common values are `100000` for standard, or `400000` for fast.
+
+Supported Extension Controllers and their mapping is as follows:
+
+| GP2040-CE | Nunchuck | Classic      | Guitar Hero Guitar |
+|-----------|----------|--------------|--------------------|
+| B1        | C        | B            | Green              |
+| B2        | Z        | A            | Red                |
+| B3        |          | Y            | Blue               |
+| B4        |          | X            | Yellow             |
+| L1        |          | L            |                    |
+| L2        |          | ZL           |                    |
+| R1        |          | R            |                    |
+| R2        |          | ZR           |                    |
+| S1        |          | Select       |                    |
+| S2        |          | Start        |                    |
+| A1        |          | Home         |                    |
+| D-Pad     |          | D-Pad        | Strum Up/Down      |
+| Analog    | Left     | Left & Right | Left               |
+
+Classic Controller support includes Classic, Classic Pro, and NES/SNES Mini Controllers. 
+
+Original Classic Controller L & R triggers are analog sensitive, where Pro triggers are not.
+
 ## Data Backup and Restoration
 
 ![GP2040-CE Configurator - Add-Ons Backup and Restore](assets/images/gpc-backup-and-restore.png)

headers/addons/wiiext.h

@@ -0,0 +1,85 @@
+#ifndef _WIIExtensionAddon_H
+#define _WIIExtensionAddon_H
+
+#include <string>
+#include <stdint.h>
+#include <hardware/i2c.h>
+#include "BoardConfig.h"
+#include "gpaddon.h"
+#include "gamepad.h"
+#include "storagemanager.h"
+#include "WiiExtension.h"
+
+// WiiExtension Module Name
+#define WiiExtensionName "WiiExtension"
+
+#ifndef WII_EXTENSION_ENABLED
+#define WII_EXTENSION_ENABLED 1
+#endif
+
+#ifndef WII_EXTENSION_I2C_ADDR
+#define WII_EXTENSION_I2C_ADDR 0x52
+#endif
+
+#ifndef WII_EXTENSION_I2C_SDA_PIN
+#define WII_EXTENSION_I2C_SDA_PIN 16
+#endif
+
+#ifndef WII_EXTENSION_I2C_SCL_PIN
+#define WII_EXTENSION_I2C_SCL_PIN 17
+#endif
+
+#ifndef WII_EXTENSION_I2C_BLOCK
+#define WII_EXTENSION_I2C_BLOCK i2c0
+#endif
+
+#ifndef WII_EXTENSION_I2C_SPEED
+#define WII_EXTENSION_I2C_SPEED 400000
+#endif
+
+class WiiExtensionInput : public GPAddon {
+public:
+	virtual bool available();
+	virtual void setup();       // WiiExtension Setup
+	virtual void process();     // WiiExtension Process
+	virtual void preprocess() {}
+	virtual std::string name() { return WiiExtensionName; }
+private:
+    WiiExtension * wii;
+    uint32_t uIntervalMS;
+    uint32_t nextTimer;
+
+    bool buttonC = false;
+    bool buttonZ = false;
+
+    bool buttonA = false;
+    bool buttonB = false;
+    bool buttonX = false;
+    bool buttonY = false;
+    bool buttonL = false;
+    bool buttonZL = false;
+    bool buttonR = false;
+    bool buttonZR = false;
+
+    bool buttonSelect = false;
+    bool buttonStart = false;
+    bool buttonHome = false;
+
+    bool dpadUp     = false;
+    bool dpadDown   = false;
+    bool dpadLeft   = false;
+    bool dpadRight  = false;
+
+    uint16_t triggerLeft  = 0;
+    uint16_t triggerRight = 0;
+    uint16_t whammyBar    = 0;
+
+    uint16_t leftX = 0;
+    uint16_t leftY = 0;
+    uint16_t rightX = 0;
+    uint16_t rightY = 0;
+
+    uint16_t map(uint16_t x, uint16_t in_min, uint16_t in_max, uint16_t out_min, uint16_t out_max);
+};
+
+#endif  // _WIIExtensionAddon_H

headers/storagemanager.h

@@ -140,6 +140,10 @@ struct AddonOptions {
 	SOCDMode sliderSOCDModeOne;
 	SOCDMode sliderSOCDModeTwo;
 	SOCDMode sliderSOCDModeDefault;
+	uint8_t wiiExtensionSDAPin;
+	uint8_t wiiExtensionSCLPin;
+	int wiiExtensionBlock;
+	uint32_t wiiExtensionSpeed;
 	uint8_t AnalogInputEnabled;
 	uint8_t BoardLedAddonEnabled;
 	uint8_t BootselButtonAddonEnabled;
@@ -156,6 +160,7 @@ struct AddonOptions {
 	uint8_t ReverseInputEnabled;
 	uint8_t TurboInputEnabled;
 	uint8_t SliderSOCDInputEnabled;
+	uint8_t WiiExtensionAddonEnabled;
 	uint32_t checksum;
 };
 

lib/CMakeLists.txt

@@ -9,4 +9,5 @@ add_subdirectory(NeoPico)
 add_subdirectory(OneBitDisplay)
 add_subdirectory(PlayerLEDs)
 add_subdirectory(rndis)
-add_subdirectory(TinyUSB_Gamepad)
+add_subdirectory(TinyUSB_Gamepad)
+add_subdirectory(WiiExtension)

lib/WiiExtension/CMakeLists.txt

@@ -0,0 +1,6 @@
+add_library(WiiExtension WiiExtension.cpp)
+target_link_libraries(WiiExtension PUBLIC BitBang_I2C)
+target_include_directories(WiiExtension INTERFACE .)
+target_include_directories(WiiExtension PUBLIC
+BitBang_I2C
+)

lib/WiiExtension/README.md

@@ -0,0 +1,6 @@
+# WiiExtension
+#  Ported to BitBangI2C
+#
+# Written by:
+#  Mike Parks
+#   <[email protected]>