Objective Development Forums

Code: Select all

#define USB_CFG_IMPLEMENT_FN_WRITE      1
and
#define USB_CFG_IMPLEMENT_FN_WRITEOUT   1

Code: Select all

/* ------------------------------------------------------------------------- */
/* ----------------------------- USB interface ----------------------------- */
/* ------------------------------------------------------------------------- */

PROGMEM char usbHidReportDescriptor[21] = { /* USB report descriptor, size must match usbconfig.h */
    0x06, 0x00, 0xff,              // USAGE_PAGE (Vendor Defined Page 1)
    0x09, 0x01,                    // USAGE (Vendor Usage 1)
    0xa1, 0x01,                    // COLLECTION (Application)
    0x09, 0x02,                    //   USAGE (Vendor Usage 2)
    0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
    0x26, 0xff, 0x00,              //   LOGICAL_MAXIMUM (255)
    0x75, 0x08,                    //   REPORT_SIZE (8)
    0x95, 0x03,                    //   REPORT_COUNT (4)
    0x81, 0x02,                    //   INPUT (Data,Var,Abs)
    0xc0                           // END_COLLECTION
};

typedef struct {
   unsigned char xValue;
   unsigned char yValue;
   unsigned char zValue;
   unsigned char pValue;
} report_t;

static report_t reportBuffer = {0, 0, 0, 0};
static uchar idleRate;   /* repeat rate for keyboards, never used for mice */

/* ------------------------------------------------------------------------- */

usbMsgLen_t usbFunctionSetup(uchar data[8])
{
usbRequest_t    *rq = (void *)data;

    /* The following requests are never used. But since they are required by
     * the specification, we implement them in this example.
     */
    if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){    /* class request type */
        DBG1(0x50, &rq->bRequest, 1);   /* debug output: print our request */
        if(rq->bRequest == USBRQ_HID_GET_REPORT){  /* wValue: ReportType (highbyte), ReportID (lowbyte) */
            /* we only have one report type, so don't look at wValue */
            usbMsgPtr = (void *)&reportBuffer;
            return sizeof(reportBuffer);
        }else if(rq->bRequest == USBRQ_HID_GET_IDLE){
            usbMsgPtr = &idleRate;
            return 1;
        }else if(rq->bRequest == USBRQ_HID_SET_IDLE){
            idleRate = rq->wValue.bytes[1];
        }
    }else{
        /* no vendor specific requests implemented */
    }
    return 0;   /* default for not implemented requests: return no data back to host */
}

/* ------------------------------------------------------------------------- */

Code: Select all

Device dev = USB.getDevice((short)0x16c0, (short)0x5df);
try{
   byte[] data = new byte[] { 0, 1, 2, 3 };
   byte[] readData = new byte[data.length];
   dev.open(1, 0, -1);
   //read
   dev.readInterrupt(0x81, readData, readData.length, 2000, false);
   next_valueX = readData[0] & 0xff;
   next_valueY = readData[1] & 0xff;
   next_valueZ = readData[2] & 0xff;
   next_valueP = readData[3] & 0xff;
   //write
   dev.writeInterrupt(0x??, data, data.length, 2000, false);
   dev.close();
}catch (USBException e){
   e.printStackTrace();
}

Code: Select all

int main(void){
   uchar   i;
   wdt_enable(WDTO_1S);
   /* Even if you don't use the watchdog, turn it off here. On newer devices,
   * the status of the watchdog (on/off, period) is PRESERVED OVER RESET!
   */
   DBG1(0x00, 0, 0);       /* debug output: main starts */
   /* RESET status: all port bits are inputs without pull-up.
   * That's the way we need D+ and D-. Therefore we don't need any
   * additional hardware initialization.
   */
   init_UART(MYUBRR);

   odDebugInit();
   usbInit();
   usbDeviceDisconnect();  /* enforce re-enumeration, do this while interrupts are disabled! */
   i = 0;
   while(--i){             /* fake USB disconnect for > 250 ms */
      wdt_reset();
      _delay_ms(1);
   }
   usbDeviceConnect();
   sei();
   DBG1(0x01, 0, 0);       /* debug output: main loop starts */
   for(;;){                /* main event loop */
      DBG1(0x02, 0, 0);   /* debug outut: main loop iterates */
      wdt_reset();

      USART_rec_byte();

      usbPoll();
      if(usbInterruptIsReady()){
         DBG1(0x03, 0, 0);   /* debug output: interrupt report prepared */
         usbSetInterrupt((void *)&reportBuffer, sizeof(reportBuffer));
      }
   }
   return 0;
}