diff -r 9e9b2c78bd31 -r 31032bc7b0e6 main.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.c	Thu Feb 16 14:42:01 2017 +0100
@@ -0,0 +1,153 @@
+/* Name: main.c
+ * Project: hid-data, example how to use HID for data transfer
+ * Author: Christian Starkjohann
+ * Creation Date: 2008-04-11
+ * Tabsize: 4
+ * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
+ * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
+ */
+
+/*
+This example should run on most AVRs with only little changes. No special
+hardware resources except INT0 are used. You may have to change usbconfig.h for
+different I/O pins for USB. Please note that USB D+ must be the INT0 pin, or
+at least be connected to INT0 as well.
+*/
+
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>  /* for sei() */
+#include <util/delay.h>     /* for _delay_ms() */
+#include <avr/eeprom.h>
+
+#include <avr/pgmspace.h>   /* required by usbdrv.h */
+#include "usbdrv.h"
+#include "oddebug.h"        /* This is also an example for using debug macros */
+
+/* ------------------------------------------------------------------------- */
+/* ----------------------------- USB interface ----------------------------- */
+/* ------------------------------------------------------------------------- */
+
+PROGMEM const char usbHidReportDescriptor[22] = {    /* USB report descriptor */
+    0x06, 0x00, 0xff,              // USAGE_PAGE (Generic Desktop)
+    0x09, 0x01,                    // USAGE (Vendor Usage 1)
+    0xa1, 0x01,                    // COLLECTION (Application)
+    0x15, 0x00,                    //   LOGICAL_MINIMUM (0)
+    0x26, 0xff, 0x00,              //   LOGICAL_MAXIMUM (255)
+    0x75, 0x08,                    //   REPORT_SIZE (8)
+    0x95, 0x80,                    //   REPORT_COUNT (128)
+    0x09, 0x00,                    //   USAGE (Undefined)
+    0xb2, 0x02, 0x01,              //   FEATURE (Data,Var,Abs,Buf)
+    0xc0                           // END_COLLECTION
+};
+/* Since we define only one feature report, we don't use report-IDs (which
+ * would be the first byte of the report). The entire report consists of 128
+ * opaque data bytes.
+ */
+
+/* The following variables store the status of the current data transfer */
+static uchar    currentAddress;
+static uchar    bytesRemaining;
+
+/* ------------------------------------------------------------------------- */
+
+/* usbFunctionRead() is called when the host requests a chunk of data from
+ * the device. For more information see the documentation in usbdrv/usbdrv.h.
+ */
+uchar   usbFunctionRead(uchar *data, uchar len)
+{
+    if(len > bytesRemaining)
+        len = bytesRemaining;
+//    eeprom_read_block(data, (uchar *)0 + currentAddress, len);
+    currentAddress += len;
+    bytesRemaining -= len;
+    return len;
+}
+/* usbFunctionWrite() is called when the host sends a chunk of data to the
+ * device. For more information see the documentation in usbdrv/usbdrv.h.
+ */
+uchar   usbFunctionWrite(uchar *data, uchar len)
+{
+    if(bytesRemaining == 0)
+        return 1;               /* end of transfer */
+    if(len > bytesRemaining)
+        len = bytesRemaining;
+
+//    eeprom_write_block(data, (uchar *)0 + currentAddress, len);
+    uint8_t *tmp = data;
+    OCR0A = *tmp;
+
+
+    currentAddress += len;
+    bytesRemaining -= len;
+    return bytesRemaining == 0; /* return 1 if this was the last chunk */
+}
+
+/* ------------------------------------------------------------------------- */
+
+usbMsgLen_t usbFunctionSetup(uchar data[8])
+{
+usbRequest_t    *rq = (void *)data;
+
+    if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){    /* HID class request */
+
+//        if(rq->bRequest == USBRQ_HID_GET_REPORT){  /* wValue: ReportType (highbyte), ReportID (lowbyte) */
+            /* since we have only one report type, we can ignore the report-ID */
+//            bytesRemaining = 128;
+//            currentAddress = 0;
+//            return USB_NO_MSG;  /* use usbFunctionRead() to obtain data */
+//        }else
+
+        if(rq->bRequest == USBRQ_HID_SET_REPORT){
+            /* since we have only one report type, we can ignore the report-ID */
+            bytesRemaining = 1;
+            currentAddress = 0;
+            return USB_NO_MSG;  /* use usbFunctionWrite() to receive data from host */
+        }
+    }else{
+        /* ignore vendor type requests, we don't use any */
+    }
+    return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+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!
+     */
+    /* 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.
+     */
+    //odDebugInit();
+    //DBG1(0x00, 0, 0);       /* debug output: main starts */
+    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();
+    
+    DDRB   |= (1 << PB2);                   // PWM output on PB2
+    TCCR0A = (1 << COM0A1) | (1 << WGM00);  // phase correct PWM mode
+    OCR0A  = 0x10;                          // initial PWM pulse width
+    TCCR0B = (1 << CS01);   // clock source = CLK/8, start PWM
+    
+    sei();
+    //DBG1(0x01, 0, 0);       /* debug output: main loop starts */
+    for(;;){                /* main event loop */
+        //DBG1(0x02, 0, 0);   /* debug output: main loop iterates */
+        wdt_reset();
+        usbPoll();
+    }
+    return 0;
+}
+
+/* ------------------------------------------------------------------------- */