📄 chap_9.lst
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301 2 init_unconfig();
302 2 init_config();
303 2
C51 COMPILER V7.08 CHAP_9 03/11/2005 10:40:00 PAGE 6
304 2 DISABLE;
305 2 bEPPflags.bits.configuration = 1;
306 2 ENABLE;
307 2 } else
308 1 stall_ep0();
309 1 }
310
311 void get_interface(void)
312 {
313 1 unsigned char txdat = 0; /* Only/Current interface = 0 */
314 1 single_transmit(&txdat, 1);
315 1 }
316
317 void set_interface(void)
318 {
319 1 if (ControlData.DeviceRequest.wValue == 0 && ControlData.DeviceRequest.wIndex == 0)
320 1 single_transmit(0, 0);
321 1 else
322 1 stall_ep0();
323 1 }
324
325
326
327
328
329
330 //Move by Liu Ying Bin
331
332
333 void init_unconfig(void)
334 {
335 1 //unsigned char i;
336 1
337 1 D12_SetEndpointEnable(0); /* Disable all endpoints but EPP0. */
338 1 }
339
340 void init_config(void)
341 {
342 1 D12_SetEndpointEnable(1); /* Enable generic/iso endpoints. */
343 1 }
344
345 void single_transmit(unsigned char * buf, unsigned char len)
346 {
347 1 if( len <= EP0_PACKET_SIZE) {
348 2 D12_WriteEndpoint(1, len, buf);
349 2 }
350 1 }
351
352 void code_transmit(unsigned char code * pRomData, unsigned short len)
353 {
354 1 ControlData.wCount = 0;
355 1 if(ControlData.wLength > len)
356 1 ControlData.wLength = len;
357 1
358 1 ControlData.pData = pRomData;
359 1 if( ControlData.wLength >= EP0_PACKET_SIZE) {
360 2 D12_WriteEndpoint(1, EP0_PACKET_SIZE, ControlData.pData);
361 2 ControlData.wCount += EP0_PACKET_SIZE;
362 2
363 2 DISABLE;
364 2 bEPPflags.bits.control_state = USB_TRANSMIT;
365 2 ENABLE;
C51 COMPILER V7.08 CHAP_9 03/11/2005 10:40:00 PAGE 7
366 2 }
367 1 else {
368 2 D12_WriteEndpoint(1, ControlData.wLength, pRomData);
369 2 ControlData.wCount += ControlData.wLength;
370 2 DISABLE;
371 2 bEPPflags.bits.control_state = USB_IDLE;
372 2 ENABLE;
373 2 }
374 1 }
375
376 void control_handler()
377 {
378 1 unsigned char type, req;
379 1
380 1 type = ControlData.DeviceRequest.bmRequestType & USB_REQUEST_TYPE_MASK;
381 1 req = ControlData.DeviceRequest.bRequest & USB_REQUEST_MASK;
382 1
383 1 if (type == USB_STANDARD_REQUEST)
384 1 (*StandardDeviceRequest[req])();
385 1 else if (type == USB_VENDOR_REQUEST)
386 1 (*VendorDeviceRequest[req])();
387 1 else
388 1 stall_ep0();
389 1 }
390
391 /*
392 void fn_usb_isr()
393 {
394 unsigned int i_st;
395 // bEPPflags.bits.in_isr = 1;
396 i_st = D12_ReadInterruptRegister();
397
398 if(i_st != 0)
399 {
400
401 if(i_st & D12_INT_ENDP2IN) ep2_txdone();
402 if(i_st & D12_INT_ENDP2OUT) ep2_rxdone();
403 if(i_st & D12_INT_ENDP0IN) ep0_txdone();
404 if(i_st & D12_INT_ENDP0OUT) ep0_rxdone();
405 // if(i_st & D12_INT_EOT)
406 // dma_eot();
407 if(i_st & D12_INT_BUSRESET)
408 {
409 bus_reset();
410 bEPPflags.bits.bus_reset = 1;
411 }
412 if(i_st & D12_INT_SUSPENDCHANGE)
413 bEPPflags.bits.suspend = 1;
414 // if(i_st & D12_INT_ENDP1IN)
415 // ep1_txdone();
416 // if(i_st & D12_INT_ENDP1OUT)
417 // ep1_rxdone();
418 }
419 bEPPflags.bits.in_isr = 0;
420 }
421 */
422 void stall_ep0(void)
423 {
424 1 D12_SetEndpointStatus(0, 1);
425 1 D12_SetEndpointStatus(1, 1);
426 1 }
427
C51 COMPILER V7.08 CHAP_9 03/11/2005 10:40:00 PAGE 8
428 void ep0_rxdone(void)
429 {
430 1 unsigned char ep_last, i;
431 1
432 1 /* int a;
433 1 for(a=0;a<=20000;a++) ;
434 1 MCU_LED0 = 0;//灭LED显示（实际应用中可去掉）
435 1 MCU_LED1 = 0;
436 1 for(a=0;a<=20000;a++) ;
437 1 MCU_LED0 = 1;//灭LED显示（实际应用中可去掉）
438 1 MCU_LED1 = 1; //dtftrtsu857d88rrydgfgggggggggggggggggggggggg
439 1 */
440 1 ep_last = D12_ReadLastTransactionStatus(0); // Clear interrupt flag
441 1
442 1 if (ep_last & D12_SETUPPACKET)
443 1 {
444 2 ControlData.wLength = 0;
445 2 ControlData.wCount = 0;
446 2
447 2 if( D12_ReadEndpoint(0, sizeof(ControlData.DeviceRequest),
448 2 (unsigned char *)(&(ControlData.DeviceRequest))) != sizeof(DEVICE_REQUEST) ) {
449 3
450 3 D12_SetEndpointStatus(0, 1);
451 3 D12_SetEndpointStatus(1, 1);
452 3 bEPPflags.bits.control_state = USB_IDLE;
453 3
454 3 return;
455 3 }
456 2 /*for(a=0;a<=20000;a++) ;
457 2 MCU_LED0 = 0;//灭LED显示（实际应用中可去掉）
458 2 MCU_LED1 = 0;
459 2 for(a=0;a<=20000;a++) ;
460 2 MCU_LED0 = 1;//灭LED显示（实际应用中可去掉）
461 2 MCU_LED1 = 1; //dtftrtsu857d88rrydgfgggggggggggggggggggggggg
462 2
463 2 */
464 2 ControlData.DeviceRequest.wValue = SWAP(ControlData.DeviceRequest.wValue);
465 2 ControlData.DeviceRequest.wIndex = SWAP(ControlData.DeviceRequest.wIndex);
466 2 ControlData.DeviceRequest.wLength = SWAP(ControlData.DeviceRequest.wLength);
467 2
468 2 // Acknowledge setup here to unlock in/out endp
469 2 D12_AcknowledgeEndpoint(0);
470 2 D12_AcknowledgeEndpoint(1);
471 2
472 2 ControlData.wLength = ControlData.DeviceRequest.wLength;
473 2 ControlData.wCount = 0;
474 2
475 2 if (ControlData.DeviceRequest.bmRequestType & (unsigned char)USB_ENDPOINT_DIRECTION_MASK) {
476 3 bEPPflags.bits.setup_packet = 1;
477 3
478 3 /* for(a=0;a<=20000;a++) ;
479 3 MCU_LED0 = 0;//灭LED显示（实际应用中可去掉）
480 3 MCU_LED1 = 0;
481 3 for(a=0;a<=20000;a++) ;
482 3 MCU_LED0 = 1;//灭LED显示（实际应用中可去掉）
483 3 MCU_LED1 = 1; //dtftrtsu857d88rrydgfgggggggggggggggggggggggg
484 3 */
485 3 bEPPflags.bits.control_state = USB_TRANSMIT; /* get command */
486 3 }
487 2 else {
488 3 if (ControlData.DeviceRequest.wLength == 0) {
489 4 bEPPflags.bits.setup_packet = 1;
C51 COMPILER V7.08 CHAP_9 03/11/2005 10:40:00 PAGE 9
490 4 bEPPflags.bits.control_state = USB_IDLE; /* set command */
491 4 }
492 3 else {
493 4 if(ControlData.DeviceRequest.wLength > MAX_CONTROLDATA_SIZE) {
494 5 bEPPflags.bits.control_state = USB_IDLE;
495 5 D12_SetEndpointStatus(0, 1);
496 5 D12_SetEndpointStatus(1, 1);
497 5 }
498 4 else {
499 5 bEPPflags.bits.control_state = USB_RECEIVE; /* set command with OUT token */
500 5 }
501 4 } // set command with data
502 3 } // else set command
503 2 } // if setup packet
504 1
505 1 else if (bEPPflags.bits.control_state == USB_RECEIVE) {
506 2 i = D12_ReadEndpoint(0, EP0_PACKET_SIZE,
507 2 ControlData.dataBuffer + ControlData.wCount);
508 2
509 2 ControlData.wCount += i;
510 2 if( i != EP0_PACKET_SIZE || ControlData.wCount >= ControlData.wLength) {
511 3 bEPPflags.bits.setup_packet = 1;
512 3 bEPPflags.bits.control_state = USB_IDLE;
513 3 }
514 2 }
515 1
516 1 else {
517 2 bEPPflags.bits.control_state = USB_IDLE;
518 2 }
519 1 }
520
521 void ep0_txdone(void)
522 {
523 1 short i = ControlData.wLength - ControlData.wCount;
524 1
525 1 D12_ReadLastTransactionStatus(1); // Clear interrupt flag
526 1
527 1 if (bEPPflags.bits.control_state != USB_TRANSMIT)
528 1 {
529 2 single_transmit(0, 0);
530 2 return;
531 2 }
532 1
533 1 if( i >= EP0_PACKET_SIZE) {
534 2 D12_WriteEndpoint(1, EP0_PACKET_SIZE, ControlData.pData + ControlData.wCount);
535 2 ControlData.wCount += EP0_PACKET_SIZE;
536 2
537 2 bEPPflags.bits.control_state = USB_TRANSMIT;
538 2 }
539 1 else if( i != 0) {
540 2 D12_WriteEndpoint(1, i, ControlData.pData + ControlData.wCount);
541 2 ControlData.wCount += i;
542 2
543 2 bEPPflags.bits.control_state = USB_IDLE;
544 2 }
545 1 else if (i == 0){
546 2 D12_WriteEndpoint(1, 0, 0); // Send zero packet at the end ???
547 2
548 2 bEPPflags.bits.control_state = USB_IDLE;
549 2 }
550 1 }
551
C51 COMPILER V7.08 CHAP_9 03/11/2005 10:40:00 PAGE 10
552
553 void usbserve(void)
554 {
555 1 if (bEPPflags.bits.bus_reset) {
556 2 DISABLE;
557 2 bEPPflags.bits.bus_reset = 0;
558 2 ENABLE;
559 2 // Release D12's SUSPEND pin after bus reset
560 2 // Enable 74HCT123 pulse generation before disconnect
561 2 //D12SUSPD = 1;
562 2 } // if bus reset
563 1
564 1 if (bEPPflags.bits.suspend) {
565 2 DISABLE;
566 2 bEPPflags.bits.suspend= 0;
567 2 ENABLE;
568 2 /*
569 2 if(D12SUSPD == 1) {
570 2 D12SUSPD = 0;
571 2 P0 = 0xFF;
572 2 P1 = 0xFF;
573 2 P2 = 0xFF;
574 2 P3 = 0xFF;
575 2 D12_SetDMA(0x0);
576 2 D12SUSPD = 1;
577 2 PCON |= 0x02;
578 2 while (1);
579 2 }*/
580 2
581 2 } // if suspend change
582 1
583 1 if (bEPPflags.bits.setup_packet){
584 2 DISABLE;
585 2 bEPPflags.bits.setup_packet = 0;
586 2 control_handler();
587 2 ENABLE;
588 2 //D12SUSPD = 1;
589 2 } // if setup_packet
590 1 }
591
592
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 1463 ----
CONSTANT SIZE = 112 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 26
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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