mini-led-cube/firmware/usb.c

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/* Name: usb.h by Kai Lauterbach
* Based on Project: hid-custom-rq example
* Revision: $Id: main.c 790 2010-05-30 21:00:26Z cs $
* Author: Christian Starkjohann
* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
*/
#include "usb.h"
/* ------------------------------------------------------------------------- */
usbMsgLen_t usbFunctionSetup(uchar data[8])
{
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usbRequest_t *rq = (void *)data;
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if ( (rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_VENDOR )
{
if ( rq->bRequest == CUSTOM_RQ_SET_STATUS )
{
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if ( rq->wIndex.bytes[0] == 27 )
{
cube = (cube & (uint32_t)0xffff0000) |
rq->wValue.bytes[0] +
(rq->wValue.bytes[1] << 8);
} else if ( rq->wIndex.bytes[0] == 28 )
{
cube = (cube & (uint32_t)0x0000ffff) |
((uint32_t)(rq->wValue.bytes[0] +
(rq->wValue.bytes[1] << 8)) << 16);
} else if ( rq->wIndex.bytes[0] < 27 )
{
if ( rq->wValue.bytes[0] == 1 )
cube |= ((uint32_t)1 << rq->wIndex.bytes[0]);
else
cube &= ~((uint32_t)1 << rq->wIndex.bytes[0]);
}
//} else if ( rq->bRequest == CUSTOM_RQ_GET_STATUS ) {
// Send one byte to the USB host.
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//static uchar dataBuffer[1]; // buffer must stay valid when usbFunctionSetup returns
//usbMsgPtr = 0; // tell the driver which data to return
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//return 1; // tell the driver to send 1 byte
//return 0; // tell the driver to send 0 byte
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}
//} else {
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/* class requests USBRQ_HID_GET_REPORT and USBRQ_HID_SET_REPORT are
* not implemented since we never call them. The operating system
* won't call them either because our descriptor defines no meaning.
*/
}
return 0; /* default for not implemented requests: return no data back to host */
}
/* ------------------------------------------------------------------------- */
void init_usb(void)
{
uchar i;
usbInit();
usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */
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i = 0;
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while(--i) { /* fake USB disconnect for > 250 ms */
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//wdt_reset();
_delay_ms(1);
//sleep_nop(255);
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}
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usbDeviceConnect();
sei(); // enable global interrupts
}
/* TODO add to the projects main
init_usb();
// 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.
wdt_enable(WDTO_1S);
...mainloop start...
wdt_reset(); // we are alive, please dont reset the µC (optional)
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usbPoll(); // keep the usb connection up
...end mainloop...
*/
/* ------------------------------------------------------------------------- */