arduino + v-usb + Wii Classic Controller = USB手柄
不得不说v-usb真强大，只需要两个稳压管+三个电阻就可以把arduino变成USB hid设备。有了USB的协议，剩下的就是arduino和其他设备的通信了。
改天再用万能线路板把元件焊上。 本帖最后由 雷精灵 于 2015-5-28 17:38 编辑
核心代码如下：
#include <Wire.h>
#include "WiiClassicController.h"
extern "C"{
#include <usbconfig.h>
#include <usbdrv.h>
};
PROGMEM const char usbHidReportDescriptor = {
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x05, // USAGE (Game Pad)
0xa1, 0x01, // COLLECTION (Application)
0xa1, 0x00, // COLLECTION (Physical)
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x30, // USAGE (X)
0x09, 0x31, // USAGE (Y)
0x09, 0x32, // USAGE (Z)
0x09, 0x33, // USAGE (Rx)
0x09, 0x34, // USAGE (Ry)
0x09, 0x35, // USAGE (Rz)
0x15, 0x81, // LOGICAL_MINIMUM (-127)
0x25, 0x7f, // LOGICAL_MAXIMUM (127)
0x95, 0x06, // REPORT_COUNT (6)
0x75, 0x08, // REPORT_SIZE (8)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x05, 0x09, // USAGE_PAGE (Button)
0x19, 0x01, // USAGE_MINIMUM (Button 1)
0x29, 0x10, // USAGE_MAXIMUM (Button 16)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x95, 0x10, // REPORT_COUNT (16)
0x75, 0x01, // REPORT_SIZE (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION
0xc0 // END_COLLECTION
};
#define LED 13
static NormalizedWiiData wiiData;
// not used for game pads
static unsigned char idleRate;
#ifdef __cplusplus
extern "C"{
#endif
unsigned char usbFunctionSetup(unsigned char data){
usbRequest_t* rq = (usbRequest_t*)data;
// there are several request types but we only need to handle
// 3 cases of the "class" type
if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS) /* class request type */
{
if (rq->bRequest == USBRQ_HID_GET_REPORT) /* wValue: ReportType (highbyte), ReportID (lowbyte) */
{
usbMsgPtr = (unsigned char*)&wiiData;
return sizeof(wiiData);
}
else if (rq->bRequest == USBRQ_HID_GET_IDLE)
{
usbMsgPtr = (unsigned char*)&idleRate;
return 1;
}
else if (rq->bRequest == USBRQ_HID_SET_IDLE)
{
idleRate = rq->wValue.bytes;
}
}
else
{
// no vendor specific requests implemented
}
return 0;
}
#ifdef __cplusplus
} // extern "C"
#endif
static int parity(int16_t value){
int16_t a = 0;
while(value){
a ^= value;
value >>= 1;
}
return a & 1;
}
void setup(){
/* add setup code here */
pinMode(LED, OUTPUT); // For Test ONLY!!!
WiiClassicController.init();
cli(); // Disable Interrupt
usbInit(); // Start v-usb
usbDeviceDisconnect(); // Enforce USB re-enumeration, do this while interrupts are disabled!
delay(250);
usbDeviceConnect();
sei(); // Enable Interrupts
}
void loop(){
/* add main program code here */
usbPoll();
WiiClassicController.update();
WiiClassicController.read(&wiiData);
digitalWrite(LED, parity(*((int16_t*)&wiiData.buttons))); // Use on-board LED to see the parity of buttons.
/*
if(wiiData.buttons.a)Serial.println("A pressed.");
if(wiiData.buttons.b)Serial.println("B pressed.");
if(wiiData.buttons.x)Serial.println("X pressed.");
if(wiiData.buttons.y)Serial.println("Y pressed.");
if(wiiData.buttons.left)Serial.println("LEFT pressed.");
if(wiiData.buttons.right)Serial.println("RIGHT pressed.");
if(wiiData.buttons.up)Serial.println("UP pressed.");
if(wiiData.buttons.down)Serial.println("DOWN pressed.");
if(wiiData.buttons.l)Serial.println("L pressed.");
if(wiiData.buttons.r)Serial.println("R pressed.");
if(wiiData.buttons.zl)Serial.println("ZL pressed.");
if(wiiData.buttons.zr)Serial.println("ZR pressed.");
if(wiiData.buttons.plus)Serial.println("- pressed.");
if(wiiData.buttons.home)Serial.println("HOME pressed.");
if(wiiData.buttons.minus)Serial.println("+ pressed.");
*/
// Wait until endpoint is ready
while(!usbInterruptIsReady())usbPoll();
// Send report
usbSetInterrupt((unsigned char*)(&wiiData), sizeof(wiiData));
}
使用了板载LED作为输入按键的状态显示。如果有奇数个按键按下，LED就亮起来。用来监视手柄工作状态挺不错的。
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