--- /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;
+}
+
+/* ------------------------------------------------------------------------- */