69 lines
2 KiB
C
69 lines
2 KiB
C
/*
|
|
* økoyono MiniLEDCube
|
|
*
|
|
* usb.h by Kai Lauterbach 11/2011
|
|
*
|
|
* Based on project: hid-custom-rq example by 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"
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/*! \brief
|
|
* \param data USB Data packet.
|
|
* \return The length of the received or send data.
|
|
*/
|
|
usbMsgLen_t usbFunctionSetup(uchar data[8])
|
|
{
|
|
usbRequest_t *rq = (void *)data;
|
|
|
|
if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_VENDOR) {
|
|
if (rq->bRequest == CUSTOM_RQ_SET_FRAME) {
|
|
// because of the code size we have to transfer one frame in
|
|
// two steps (control messages)
|
|
if (! rq->wIndex.bytes[0]) {
|
|
// the lower word
|
|
frame.all = (frame.all & (uint32_t)0xffff0000) |
|
|
(rq->wValue.bytes[0] +
|
|
(rq->wValue.bytes[1] << 8));
|
|
} else {
|
|
// the high word
|
|
frame.all = (frame.all & (uint32_t)0x0000ffff) |
|
|
((uint32_t)(rq->wValue.bytes[0] +
|
|
(rq->wValue.bytes[1] << 8)) << 16);
|
|
}
|
|
} else if (rq->bRequest == CUSTOM_RQ_EEPROM_STORE_FRAME) {
|
|
// save the actual frame to the eeprom
|
|
// don't forget to send a frame first
|
|
eeprom_write_dword(&eep_anim[ rq->wIndex.bytes[0] ], frame.all);
|
|
} else if (rq->bRequest == CUSTOM_RQ_SET_MODE) {
|
|
// set the firmware mode
|
|
// 0 = stop; 1 = single; 2 = loop
|
|
mode = rq->wValue.bytes[0];
|
|
}
|
|
}
|
|
|
|
return 0; /* default for not implemented requests: return no data back to host */
|
|
}
|
|
|
|
/*! \brief Initializes the USB connection.
|
|
*/
|
|
void init_usb(void)
|
|
{
|
|
usbInit();
|
|
usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */
|
|
|
|
// fake USB disconnect for > 250 ms
|
|
// for (uint8_t i = 0; i <= 25; i++) {
|
|
// _delay_ms(10);
|
|
// }
|
|
_delay_ms(250);
|
|
|
|
usbDeviceConnect();
|
|
}
|