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Arduino-USB-HID-RetroJoysti.../RetroJoystickAdapter_WiiExtension.ino
Jarno Lehtinen 79e633044f Create RetroJoystickAdapter_WiiExtension.ino
2016-11-11 18:12:28 +02:00

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//Uno: SDA = A4, SCL = A5
//Pro Micro: SDA = D2, SCL = D3
//================================================================================
//================================================================================
// Joystick (Gamepad)
#include "HID.h"
#if ARDUINO < 10606
#error The Joystick2 library requires Arduino IDE 1.6.6 or greater. Please update your IDE.
#endif
#if !defined(USBCON)
#error The Joystick2 library can only be used with a USB MCU (e.g. Arduino Leonardo, Arduino Micro, etc.).
#endif
#if !defined(_USING_HID)
#error "Using legacy HID core (non pluggable)"
#endif
#define JOYSTICK_REPORT_ID 0x04
#define JOYSTICK_STATE_SIZE 7
#define JOYSTICK_DATA_SIZE 6
#define NUNCHUCK 1
#define CLASSIC_CONTROLLER 2
#define CLASSIC_CONTROLLER_PRO 3
//#define DEBUG
#define HIDDESC_MACRO(REPORT_ID) \
/* Joystick # */ \
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ \
0x09, 0x04, /* USAGE (Joystick) */ \
0xa1, 0x01, /* COLLECTION (Application) */ \
0x85, REPORT_ID, /* REPORT_ID */ \
/* 15 Buttons */ \
0x05, 0x09, /* USAGE_PAGE (Button) */ \
0x19, 0x01, /* USAGE_MINIMUM (Button 1) */ \
0x29, 0x0F, /* USAGE_MAXIMUM (Button 15) */ \
0x15, 0x00, /* LOGICAL_MINIMUM (0) */ \
0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ \
0x75, 0x01, /* REPORT_SIZE (1) */ \
0x95, 0x0F, /* REPORT_COUNT (15) */ \
0x81, 0x02, /* INPUT (Data,Var,Abs) */ \
0x75, 0x01, /* REPORT_SIZE (1) */ \
0x95, 0x01, /* REPORT_COUNT (1) */ \
0x81, 0x03, /* INPUT (Cnst,Var,Abs) */ \
/* X and Y Axis */ \
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ \
0x09, 0x01, /* USAGE (Pointer) */ \
0xA1, 0x00, /* COLLECTION (Physical) */ \
0x09, 0x30, /* USAGE (x) */ \
0x09, 0x31, /* USAGE (y) */ \
0x09, 0x33, /* USAGE (Rx) */ \
0x09, 0x34, /* USAGE (Ry) */ \
0x09, 0x35, /* USAGE (Rz) */ \
0x15, 0x00, /* LOGICAL_MINIMUM (0) */ \
0x26, 0xff, 0x00, /* LOGICAL_MAXIMUM (255) */ \
0x75, 0x08, /* REPORT_SIZE (8) */ \
0x95, 0x05, /* REPORT_COUNT (5) */ \
0x81, 0x02, /* INPUT (Data,Var,Abs) */ \
0xc0, /* END_COLLECTION */ \
0xc0 /* END_COLLECTION */
static const uint8_t hidReportDescriptor[] PROGMEM = {
HIDDESC_MACRO(JOYSTICK_REPORT_ID)
};
class Joystick_ {
private:
uint8_t joystickId;
uint8_t reportId;
uint8_t olddata[JOYSTICK_DATA_SIZE];
uint8_t state[JOYSTICK_STATE_SIZE];
uint8_t flag;
public:
uint8_t data[JOYSTICK_DATA_SIZE];
Joystick_(uint8_t initJoystickId, uint8_t initReportId) {
// Setup HID report structure
static bool usbSetup = false;
if (!usbSetup) {
static HIDSubDescriptor node(hidReportDescriptor, sizeof(hidReportDescriptor));
HID().AppendDescriptor(&node);
usbSetup = true;
}
// Initalize State
joystickId = initJoystickId;
reportId = initReportId;
memcpy(olddata, data, JOYSTICK_DATA_SIZE);
state[0] = 0;
state[1] = 0;
state[2] = 127;
state[3] = 127;
state[4] = 127;
state[5] = 127;
state[6] = 127;
sendState(1);
}
void updateState(uint8_t type) {
if (memcmp(olddata, data, JOYSTICK_DATA_SIZE)) {
memcpy(olddata, data, JOYSTICK_DATA_SIZE);
flag = 1;
}
if (type == NUNCHUCK) {
// http://wiibrew.org/wiki/Wiimote/Extension_Controllers/Nunchuck
uint8_t SX = data[0];
uint8_t SY = data[1];
uint16_t AX = (data[2] << 2) | (data[5] >> 2 & B11);
uint16_t AY = (data[3] << 2) | (data[5] >> 4 & B11);
uint16_t AZ = (data[4] << 2) | (data[5] >> 6 & B11);
uint8_t BC = (~data[5] >> 1 & 1);
uint8_t BZ = (~data[5] & 1);
state[0] = (BZ << 1) | BC;
state[1] = 0;
state[2] = SX;
state[3] = ~SY;
state[4] = AX >> 2;
state[5] = AY >> 2;
state[6] = AZ >> 2;
}
if (type == CLASSIC_CONTROLLER || type == CLASSIC_CONTROLLER_PRO) {
// http://wiibrew.org/wiki/Wiimote/Extension_Controllers/Classic_Controller
uint8_t LX = (data[0] & 0x3f); //6bit
uint8_t LY = (data[1] & 0x3f); //6bit
uint8_t RX = ((data[0] & 0xc0) >> 3) + ((data[1] & 0xc0) >> 5) + ((data[2] & 0x80) >> 7); //5bit
uint8_t RY = (data[2] & 0x1f); //5bit
uint8_t BDU = ~data[5] & 1;
uint8_t BDD = ~data[4] >> 6 & 1;
uint8_t BDL = ~data[5] >> 1 & 1;
uint8_t BDR = ~data[4] >> 7 & 1;
uint8_t Bselect = ~data[4] >> 4 & 1;
uint8_t BH = ~data[4] >> 3 & 1;
uint8_t Bstart = ~data[4] >> 2 & 1;
uint8_t BA = ~data[5] >> 4 & 1;
uint8_t BB = ~data[5] >> 6 & 1;
uint8_t BX = ~data[5] >> 3 & 1;
uint8_t BY = ~data[5] >> 5 & 1;
uint8_t BLT = ~data[4] >> 5 & 1;
uint8_t BRT = ~data[4] >> 1 & 1;
uint8_t BZL = ~data[5] >> 7 & 1;
uint8_t BZR = ~data[5] >> 2 & 1;
uint8_t LT = ((data[2] & 0x60) >> 2) + ((data[3] & 0xe0) >> 5);
uint8_t RT = (data[3] & 0x1f);
state[0] = (BZR << 7) | (BZL << 6) | (BRT << 5) | (BLT << 4) | (BY << 3) | (BX << 2) | (BB << 1) | BA;
state[1] = (Bstart << 6) | (BH << 5) | (Bselect << 4) | (BDR << 3) | (BDL << 2) | (BDD << 1) | BDU;
state[2] = LX << 2;
state[3] = ~(LY << 2);
state[4] = RX << 3;
state[5] = ~(RY << 3);
state[6] = 127;
}
}
void sendState(uint8_t force = 0) {
if (flag || force) {
// HID().SendReport(Report number, array of values in same order as HID descriptor, length)
HID().SendReport(reportId, state, JOYSTICK_STATE_SIZE);
flag = 0;
}
}
};
Joystick_ Joystick[1] =
{
Joystick_(0, JOYSTICK_REPORT_ID)
};
//================================================================================
//================================================================================
#include <Wire.h>
#define ADDRESS 0x52
uint16_t type;
const uint8_t ident_nunchuck[] = { 0x00, 0x00, 0xA4, 0x20, 0x00, 0x00 };
const uint8_t ident_classic_controller[] = { 0x00, 0x00, 0xA4, 0x20, 0x01, 0x01 };
const uint8_t ident_classic_controller_pro[] = { 0x01, 0x00, 0xA4, 0x20, 0x00, 0x00 };
void sendByte(uint8_t data, uint8_t location) {
Wire.beginTransmission(ADDRESS);
Wire.write(location);
Wire.write(data);
Wire.endTransmission();
}
void sendByte(uint8_t data) {
Wire.beginTransmission(ADDRESS);
Wire.write(data);
Wire.endTransmission();
}
uint8_t initExtension() {
uint8_t buf[6];
uint8_t type = CLASSIC_CONTROLLER; // default type
sendByte(0x55, 0xF0);
sendByte(0x00, 0xFB);
sendByte(0xFA);
delayMicroseconds(200);
Wire.requestFrom(ADDRESS, 6);
uint8_t i = 0;
while(Wire.available()) {
buf[i] = Wire.read();
i++;
if (i >= 6) break;
}
if (memcmp(buf, ident_nunchuck, 6) == 0) type = NUNCHUCK;
if (memcmp(buf, ident_classic_controller, 6) == 0) type = CLASSIC_CONTROLLER;
if (memcmp(buf, ident_classic_controller_pro, 6) == 0) type = CLASSIC_CONTROLLER_PRO;
return type;
}
void setup() {
Wire.begin();
type = initExtension();
#ifdef DEBUG
Serial.begin(115200);
#endif
}
void loop() {
#ifdef DEBUG
unsigned long t = micros();
#endif
sendByte(0x00);
delayMicroseconds(200);
Wire.requestFrom(ADDRESS, 6); //request data from wii nunchuck
uint8_t i = 0;
while(Wire.available()) {
Joystick[0].data[i] = Wire.read();
i++;
if (i >= JOYSTICK_DATA_SIZE) break;
}
//detect if init is needed
if (i < JOYSTICK_DATA_SIZE) {
delay(10);
type = initExtension();
#ifdef DEBUG
Serial.println("Init!");
#endif
delay(10);
}
#ifdef DEBUG
Serial.println(micros()-t);
#endif
#ifdef DEBUG
for (uint8_t i = 0; i < JOYSTICK_DATA_SIZE; i++) {
Serial.print(data[i], HEX);
Serial.print(" ");
}
Serial.println();
#endif
Joystick[0].updateState(type);
Joystick[0].sendState();
#ifdef DEBUG
delay(100);
#endif
delayMicroseconds(500);
}
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