📄 chap_9.lst
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394 2 case 2 : //获取配置描述符
395 2 USB_Int_Flag.BITS.EP0RX = 0;
396 2 Temp = 64;
397 2 Descriptor_Ptr = &Standard_Config_Descriptor[0]; //set pointer to configuration descriptor
398 2 count = *Descriptor_Ptr; //get configuration Descriptor length
399 2 //选择端点号1
400 2 D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
401 2 //check if only configuration descriptor required
402 2 //检查描述符长度,决定是只发送配置描述符还是描述符集合
403 2 if(count >= USB_Device_Request.wLength) //Send only Configuration descriptor
404 2 {
405 3 //写入发送字节数
406 3 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) USB_Device_Request.wLength;
407 3 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (USB_Device_Request.wLength >> 8);
408 3 //send descriptor
409 3 //发送描述符
410 3 for(count = 0 ; count < USB_Device_Request.wLength ; count++)
411 3 {
412 4 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
413 4 Descriptor_Ptr++;
414 4 }
415 3 wait_ep0tx();
416 3 ep0out_ack();
417 3 }
418 2 else //send Configuration,Interface and Endpoint descriptor
419 2 {
420 3 //发送描述符集合(配置+接口+端点)
421 3 if(USB_Device_Request.wLength >= 32)
422 3 {
423 4 //写入配置描述符
424 4 while(count != 0)
425 4 {
426 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
427 5 count--;
C51 COMPILER V7.06 CHAP_9 07/02/2003 10:27:50 PAGE 8
428 5 Descriptor_Ptr++;
429 5 }
430 4 //选择高速还是全速接口描述符
431 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
432 4 Descriptor_Ptr = &Bulk_Interface_Descriptor[0]; //set pointer to interface descriptor
433 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
434 4 Descriptor_Ptr = &HS_Bulk_Interface_Descriptor[0]; //set pointer to interface descriptor
435 4 count = *Descriptor_Ptr; //get the descriptor count
436 4 //写入接口描述符
437 4 while(count != 0)
438 4 {
439 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
440 5 count--;
441 5 Descriptor_Ptr++;
442 5 }
443 4 //选择高速还是全速端点1IN描述符
444 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
445 4 Descriptor_Ptr = &Int_In_Descriptor[0]; //set pointer to interface descriptor
446 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
447 4 Descriptor_Ptr = &HS_Int_In_Descriptor[0]; //set pointer to interface descriptor
448 4 count = *Descriptor_Ptr; //read in descriptor length
449 4 //写入端点1IN描述符
450 4 while(count != 0)
451 4 {
452 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
453 5 count--;
454 5 Descriptor_Ptr++;
455 5 }
456 4 //选择高速还是全速端点1OUT描述符
457 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
458 4 Descriptor_Ptr = &Int_Out_Descriptor[0]; //set pointer to interface descriptor
459 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
460 4 Descriptor_Ptr = &HS_Int_Out_Descriptor[0]; //set pointer to interface descriptor
461 4 count = *Descriptor_Ptr; //read in descriptor length
462 4 //写入端点1OUT描述符
463 4 while(count != 0)
464 4 {
465 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
466 5 count--;
467 5 Descriptor_Ptr++;
468 5 }
469 4 //选择高速还是全速端点2IN描述符
470 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
471 4 Descriptor_Ptr = &Bulk_In_Descriptor[0]; //set pointer to interface descriptor
472 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
473 4 Descriptor_Ptr = &HS_Bulk_In_Descriptor[0]; //set pointer to interface descriptor
474 4 count = *Descriptor_Ptr; //read in descriptor length
475 4 //写入端点2IN描述符
476 4 while(count != 0)
477 4 {
478 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
479 5 count--;
480 5 Descriptor_Ptr++;
481 5 }
482 4 //选择高速还是全速端点2OUT描述符
483 4 if(Kernel_Flag.BITS.HS_FS_State == FULL_SPEED)
484 4 Descriptor_Ptr = &Bulk_Out_Descriptor[0]; //set pointer to interface descriptor
485 4 if(Kernel_Flag.BITS.HS_FS_State == HIGH_SPEED)
486 4 Descriptor_Ptr = &HS_Bulk_Out_Descriptor[0]; //set pointer to interface descriptor
487 4 count = *Descriptor_Ptr; //read in descriptor length
488 4 //写入端点2OUT描述符
489 4 while(count != 0)
C51 COMPILER V7.06 CHAP_9 07/02/2003 10:27:50 PAGE 9
490 4 {
491 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
492 5 count--;
493 5 Descriptor_Ptr++;
494 5 }
495 4 }
496 3 //使端点有效
497 3 D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.VENDP = 1; //validate FIFO
498 3 wait_ep0tx();
499 3 ep0out_ack();
500 3 }
501 2 break;
502 2
503 2 case 3: //获取字符串描述符
504 2 Descriptor_Ptr = &Standard_String_ID[0]; //set pointer to interface descriptor
505 2 count = *Descriptor_Ptr; //get length
506 2 D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
507 2 if(USB_Device_Request.wLength < count)
508 2 count = USB_Device_Request.wLength; //get the remaining length
509 2 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = count;
510 2 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = 0;
511 2 //send string ID
512 2 while(count != 0)
513 2 {
514 3 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr; //fill up FIFO
515 3 Descriptor_Ptr++;
516 3 count--;
517 3 }
518 2 wait_ep0tx();
519 2 ep0out_ack();
520 2 break;
521 2
522 2
523 2 case 4:
524 2 reserved();
525 2 break;
526 2
527 2 case 5: //获取端点描述符
528 2 Temp = 0;
529 2 if((USB_Device_Request.wValue & 0x00ff) > 0x0001)
530 2 {
531 3 D14_Cntrl_Reg.D14_CONTROL_FUNCTION.BITS.STALL = 1;
532 3 while(!USB_Int_Flag.BITS.EP0SETUP)
533 3 {
534 4 //读取ISP1581中断寄存器
535 4 USB_Int_Flag.VALUE |= D14_Cntrl_Reg.D14_INT.VALUE;
536 4 //回写ISP1581中断寄存器
537 4 D14_Cntrl_Reg.D14_INT.VALUE = USB_Int_Flag.VALUE;
538 4 if(USB_Int_Flag.BITS.SUSP || USB_Int_Flag.BITS.RESET)
539 4 return;
540 4 }
541 3 USB_Int_Flag.BITS.EP0TX = 0;
542 3 }
543 2 else
544 2 {
545 3 Descriptor_Ptr = &Bulk_Out_Descriptor[0]; //set pointer to Bulk Out endpoint descriptor
546 3 count = *Descriptor_Ptr; //read in descriptor length
547 3 D14_Cntrl_Reg.D14_ENDPT_INDEX = 1;
548 3 if(count >= USB_Device_Request.wLength)
549 3 {
550 4 Temp = USB_Device_Request.wLength;
551 4 //send endpoint descriptor
C51 COMPILER V7.06 CHAP_9 07/02/2003 10:27:50 PAGE 10
552 4 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) Temp;
553 4 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (Temp >> 8);
554 4 for(count = 0 ; count < USB_Device_Request.wLength ; count++)
555 4 {
556 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
557 5 Descriptor_Ptr++;
558 5 }
559 4 wait_ep0tx();
560 4 ep0out_ack();
561 4 }
562 3 else
563 3 {
564 4 USB_Device_Request.wLength -= count; //send Endpoint descriptor
565 4 Temp += count;
566 4 while(count != 0)
567 4 {
568 5 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
569 5 count--;
570 5 Descriptor_Ptr++;
571 5 }
572 4 Descriptor_Ptr = &Bulk_In_Descriptor[0]; //set pointer to Bulk In endpoint descriptor
573 4 count = *Descriptor_Ptr; //read in descriptor length
574 4 if(count >= USB_Device_Request.wLength)
575 4 {
576 5 Temp += USB_Device_Request.wLength;
577 5 //send endpoint descriptor
578 5 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) Temp;
579 5 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (Temp >> 8);
580 5 for(count = 0 ; count < USB_Device_Request.wLength ; count++)
581 5 {
582 6 D14_Cntrl_Reg.D14_DATA_PORT_LSB = *Descriptor_Ptr;
583 6 Descriptor_Ptr++;
584 6 }
585 5 wait_ep0tx();
586 5 ep0out_ack();
587 5 }
588 4 else
589 4 {
590 5 USB_Device_Request.wLength -= count; //send Endpoint descriptor
591 5 Temp += count;
592 5 D14_Cntrl_Reg.D14_BUFFER_LENGTH_LSB = (UC) Temp;
593 5 D14_Cntrl_Reg.D14_BUFFER_LENGTH_MSB = (UC) (Temp >> 8);
594 5 while(count != 0)
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