?? ledtest.lst
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460 1 // read and calculate the read crc
461 1 docrc16(temp1);
462 1 lastcrc16 = docrc16(temp2);
463 1 // crc should now be 0xB001
464 1 if (lastcrc16 != 0xB001)
465 1 {
466 1 ow_reset();
467 1 tx_str("make PIOA high crc error!");
468 1 }
469 1 else{
470 1 tx_str("make PIOA high crc correct!");
471 1 }
472 1 tx_lfbs();
473 1
474 1 /* ow_reset();
475 1 write_byte(0xCC); //LSB address
476 1 write_byte(0x55); //MSB address
477 1 write_byte(0x07); //LSB address
478 1 write_byte(0x00); //MSB address
479 1 write_byte(0x6d); //
480 1 temp1=read_byte();
481 1 temp2=read_byte();
482 1 // crcbit=read_bit();
483 1 setcrc16(0x0000); //
484 1 docrc16(0x55);
485 1 docrc16(0x07);
486 1 docrc16(0x00);
487 1 docrc16(0x6d);
488 1 // read and calculate the read crc
489 1 docrc16(temp1);
C51 COMPILER V7.01 LEDTEST 08/21/2002 17:11:51 PAGE 9
490 1 lastcrc16 = docrc16(temp2);
491 1 // crc should now be 0xB001
492 1 if (lastcrc16 != 0xB001)
493 1 {
494 1 ow_reset();
495 1 tx_str("make PIOA low crc error!");
496 1 }
497 1 else{
498 1 tx_str("make PIOA low crc correct!");
499 1 }
500 1 tx_lfbs();
501 1 delay(10000);
502 1 ow_reset();
503 1 write_byte(0xCC); //LSB address
504 1 write_byte(0xaa); //MSB address
505 1 write_byte(0x07); //LSB address
506 1 write_byte(0x00); //MSB address
507 1 test=read_byte(); //LSB address
508 1 temp1=read_byte();
509 1 temp2=read_byte();
510 1 // crcbit=read_bit();
511 1 setcrc16(0x0000); //
512 1 docrc16(0xaa);
513 1 docrc16(0x07);
514 1 docrc16(0x00);
515 1 docrc16(test);
516 1 // read and calculate the read crc
517 1 docrc16(temp1);
518 1 lastcrc16 = docrc16(temp2);
519 1 // crc should now be 0xB001
520 1 if (lastcrc16 != 0xB001)
521 1 {
522 1 ow_reset();
523 1 tx_str("read status crc error!");
524 1 }
525 1 else{
526 1 tx_str("read status crc correct!");
527 1 }
528 1 tx_lfbs();
529 1 if (test==0xff)
530 1 {
531 1 tx_str("read_byte=0xff!");
532 1 tx_lfbs();
533 1 }
534 1 else if(test<=48) {
535 1 tx_str("read_byte=");
536 1 tx_char((test+48));
537 1 tx_lfbs();
538 1 }
539 1 else { tx_str("read_byte=");
540 1 tx_char((test));
541 1 tx_lfbs();
542 1 }*/
543 1 /* break;
544 1 case '8':
545 1 ow_reset();
546 1 write_byte(0xCC); //skip command
547 1 write_byte(0x55); //write status command
548 1 write_byte(0x07); //LSB address
549 1 write_byte(0x00); //MSB address
550 1 write_byte(0x6d); //data
551 1 temp1=read_byte();
C51 COMPILER V7.01 LEDTEST 08/21/2002 17:11:51 PAGE 10
552 1 temp2=read_byte();
553 1 // crcbit=read_bit();
554 1 setcrc16(0x0000); //
555 1 docrc16(0x55);
556 1 docrc16(0x07);
557 1 docrc16(0x00);
558 1 docrc16(0x6d);
559 1 // read and calculate the read crc
560 1 docrc16(temp1);
561 1 lastcrc16 = docrc16(temp2);
562 1 // crc should now be 0xB001
563 1 if (lastcrc16 != 0xB001)
564 1 {
565 1 ow_reset();
566 1 tx_str("make PIOA low(Channel FF = 1 transistor off) crc error!");
567 1 }
568 1 else{
569 1 tx_str("make PIOA low(Channel FF = 1 transistor off) crc correct!");
570 1 }
571 1 tx_lfbs();
572 1 // delay(10000);
573 1 break;
574 1 default:
575 1 tx_str("default break!");
576 1 break;
577 1 }
578 1 }*/
579 1 while(1);
580 1 }
581
582 /*unsigned char rx_char(void)
583 {
584 while(!RI)
585 {;}
586 RI=0;
587 return SBUF;
588 }*/
589
590 void tx_str(unsigned char *str)
591 {int i;
592 1 for (i=0;i<strlen(str);i++)
593 1 {
594 2 tx_char(str[i]);
595 2 }
596 1 }
597 void tx_char(unsigned char c)
598 {
599 1 while(!TI)
600 1 {
601 2 ;
602 2 }
603 1 TI=0;
604 1 SBUF=c;
605 1 }
606
607 void tx_lfbs(void)
608 {int y;
609 1 tx_char(0x0A);
610 1 for (y=0;y<70;y++)
611 1 {
612 2 tx_char(0x08);
613 2 }
C51 COMPILER V7.01 LEDTEST 08/21/2002 17:11:51 PAGE 11
614 1 }
615 void Led_blink(void)
616 {
617 1 int i;
618 1 for(i=0;i<10;i++)
619 1 {
620 2 P15=1;
621 2 delay(200);
622 2 P15=0;
623 2 delay(200);
624 2 }
625 1 }
626
627 void Init_Rs232(void)
628 {IE=0X00;
629 1 SCON=0x50;
630 1 TMOD=0x20;
631 1 TH1=0xfd;
632 1 TL1=0xfd;
633 1 TR1=1;
634 1 TI=1;
635 1 }
636
637 void delay(int delay)
638 {int i,j;
639 1 for (i=0;i<delay;i++)
640 1 for (j=0;j<255;j++);
641 1 }
642
643
644 // WRITE_BIT - writes a bit to the one-wire bus, passed in bitval.
645 //
646 void write_bit(char bitval)
647 {
648 1 if (bitval==0)
649 1 {
650 2 writedatalow();
651 2 }
652 1 else{
653 2 writedatahigh();
654 2 }
655 1 }// Delay provides 16us per loop, plus 24us. Therefore delay(5) = 104us
656 // WRITE_BYTE - writes a byte to the one-wire bus.
657 //
658 /*void writedatalow(void)
659 {
660 }
661
662 void writedatahigh(void)
663 {int count=6000;
664
665 owData=0;
666 owRst=0;
667 wdelay(1);
668 owData=1;
669 owRst=1;
670 owEn=1;
671 owBsy=1;
672 wdelay(1);
673 owEn=0;
674 while(count!=0)
675 {
C51 COMPILER V7.01 LEDTEST 08/21/2002 17:11:51 PAGE 12
676 if(
677 }*/
678
679 void write_byte(char val)
680 {
681 1 unsigned char i;
682 1 unsigned char temp;
683 1 for (i=0; i<8; i++) // writes byte, one bit at a time
684 1 {
685 2 temp = val>>i; // shifts val right 'i' spaces
686 2 temp &= 0x01; // copy that bit to temp
687 2 write_bit(temp); // write bit in temp into
688 2 }
689 1 wdelay(5);
690 1 }
691
692 unsigned char read_bit(void)
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