/* * CTHN.de 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" /* ------------------------------------------------------------------------- */ 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] == 0 ) { // the lower word frame = (frame & (uint32_t)0xffff0000) | ( rq->wValue.bytes[0] + (rq->wValue.bytes[1] << 8) ); } else { // the high word frame = (frame & (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 ); } 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 */ } /* ------------------------------------------------------------------------- */ void init_usb(void) { uint8_t i; usbInit(); usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */ // fake USB disconnect for > 250 ms while(--i) { asm volatile("nop"::); } usbDeviceConnect(); } /* ------------------------------------------------------------------------- */