📄 bwmeter.lst
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679 ;
680 ; *** Load EP1-IN with 64 bytes of ppf history
681 ;
0133 7F40 682 mov r7,#64 ; loop counter
0135 7834 683 mov r0,#PKTbuf ; r0 points to 64-byte ppf history buffer
0137 90E7C0 684 mov dptr,#EP1INBUF ; dptr points to destination (endpoint FIFO
)
013A E6 685 xfr: mov a,@r0 ; get byte from PKTbuf
013B 08 686 inc r0 ; bump source pointer
013C F0 687 movx @dptr,a ; store byte in EP1INBUF
013D A3 688 inc dptr ; bump dest pointer
013E DFFA 689 djnz r7,xfr ; do it 64 times
690 ;
0140 C202 691 clr blankflag ; (don't blank the display in 'display_hex'
call)
0142 853332 692 mov displaydigit,maxppf ; display max packets per frame
0145 516F 693 call display_hex
0147 01BB 694 jmp mainloop ; go again
695 ; -----------------------------------------------------------------------------------------
------
696 ; An EP8 buffer is available. Update last byte in buffer, and dispatch another packet
697 ; -----------------------------------------------------------------------------------------
------
0149 0531 698 Update_EP8: inc InCnt ; total number of IN packets
014B D204 699 setb F_gotPacket ; tell SOF service routine we're in busines
s
700 LDREG EP8FIFOBUF+511,InCnt ; put IN count into last buffer byte
0153 0530 704 inc ppf ; bump the packets-per-frame count
705 LDREG EP8BCL,#0 ; re-arm (512 bytes)--NOTE: EP8BCH fixed at
2
015B 22 709 ret ; back to loop
710 ; -----------------------------------------------------------------------------------------
------
711 ; An EP6 buffer is available. Update last byte in buffer, and dispatch another packet
712 ; -----------------------------------------------------------------------------------------
------
015C 0531 713 Update_EP6: inc InCnt ; total number of IN packets
015E D204 714 setb F_gotPacket ; tell SOF service routine we're in busines
s
715 LDREG EP6FIFOBUF+511,InCnt ; put IN count into last buffer byte
0166 0530 719 inc ppf ; bump the packets-per-frame count
720 LDREG EP6BCL,#0 ; re-arm (512 bytes)--NOTE: EP6BCH fixed at
2
016E 22 724 ret ; back to loop
725 ; -----------------------------------------------------------------------------------------
A51 MACRO ASSEMBLER BWMETER 07/21/2006 09:55:29 PAGE 12
------
726 ; An EP4 buffer has data. Re-arm the endpoint (drop the data)
727 ; -----------------------------------------------------------------------------------------
------
016F D204 728 Update_EP4: setb F_gotPacket ; tell SOF service routine we're in business
0171 0530 729 inc ppf ; bump the packets-per-frame count
730 LDREG EP4BCL,#80h ; re-arm the endpoint (skip bit set)
0179 22 734 ret ; back to loop
735 ; -----------------------------------------------------------------------------------------
------
736 ; An EP2 buffer has data. Re-arm the endpoint (drop the data)
737 ; -----------------------------------------------------------------------------------------
------
017A D204 738 Update_EP2: setb F_gotPacket ; tell SOF service routine we're in business
017C 0530 739 inc ppf ; bump the packets-per-frame count
740 LDREG EP2BCL,#80h ; re-arm the endpoint (skip bit set)
0184 22 744 ret ; back to loop
745 ; -----------------------------------------------------------------------------------------
------
746 ; Got an SOF. Toggle lights, store ppf in buffer, clear ppf, update max. Uses AUTOPTR1 -> P
KTbuf
747 ; -----------------------------------------------------------------------------------------
------
0185 B201 748 got_SOF: cpl F_LEDtog ; *** Toggle the middle lights to indicate we're ru
nning
0187 30010A 749 jnb F_LEDtog,gs0
750 L2_OFF
753 L3_ON
0192 8008 756 sjmp gs1
0194 757 gs0: L2_ON
760 L3_OFF
019C 300419 763 gs1: jnb F_gotPacket,gs3 ; no INS or OUTS yet...bail out
019F 200016 764 gs2: jb PKTbuf_full,gs3 ; 64-byte ppf-history buffer is full...bail out
01A2 A630 765 mov @r0,ppf ; not full--stash another ppf value,
01A4 08 766 inc r0 ; and bump the pointer
767 ;
01A5 E533 768 mov a,maxppf ; *** update maxppf
01A7 B53000 769 cjne a,ppf,$+3 ; just to set the cy bit
01AA 5003 770 jnc notbigger ; maxppf-ppf: cy=1 if maxppf < ppf
01AC 853033 771 mov maxppf,ppf ; found a higer one, update maxppf
01AF 753000 772 notbigger: mov ppf,#0 ; reset packet count
773 ;
01B2 E8 774 mov a,r0 ; *** check for full PKTbuf (64 byte limit)
01B3 B47402 775 cjne a,#PKTbuf+64,gs3
01B6 D200 776 setb PKTbuf_full ; set the 'full' (don't update any more) flag
01B8 22 777 gs3: ret
778 ; -----------
779 ; Subroutines
780 ; -----------
781 ; Reset the endpoint FIFOSto the power-on state. (Busy bits, pointers, etc.)
782 ; This is done for repeated code load/debug cycles. Need to restore the part to the
783 ; power-on state so logic that was set during last debug session does not carry over
784 ; into the next debug session.
785 ;
01B9 90E604 786 reset_FIFOS: mov dptr,#FIFORESET
01BC 7480 787 mov a,#80h
01BE F0 788 movx @dptr,a ; first set this bit to NAK any traffic
01BF 7402 789 mov a,#02h ; then clear individual FIFOS
01C1 00 790 nop ; Syncronization delay (TRM Sec 15.14)
01C2 F0 791 movx @dptr,a ; EP2
01C3 7404 792 mov a,#04h
01C5 00 793 nop
01C6 F0 794 movx @dptr,a ; EP4
01C7 7406 795 mov a,#06h
01C9 00 796 nop
01CA F0 797 movx @dptr,a ; EP6
A51 MACRO ASSEMBLER BWMETER 07/21/2006 09:55:29 PAGE 13
01CB 7408 798 mov a,#08h
01CD 00 799 nop
01CE F0 800 movx @dptr,a ; EP8
01CF 7400 801 mov a,#0
01D1 00 802 nop
01D2 F0 803 movx @dptr,a ; clear the NAK bit
01D3 22 804 ret
805 ;
01D4 806 fill_and_arm_EP8_buffers:
01D4 7411 807 mov a,#011h ; fill first buffer with 0's
01D6 90FC00 808 mov dptr,#EP8FIFOBUF
01D9 513A 809 call fill_EP68_IN
810 LDREG EP8FIFOBUF+511,#1 ; mark packet #1
814 LDREG EP8BCH,#2 ; Arm EP8-IN: 200h is 512 bytes
818 LDREG EP8BCL,#0 ; arm it
822 ;
01ED 74FF 823 mov a,#0FFh ; fill second buffer with 1's
01EF 90FC00 824 mov dptr,#EP8FIFOBUF
01F2 513A 825 call fill_EP68_IN
826 LDREG EP8FIFOBUF+511,#2 ; mark packet #2
830 LDREG EP8BCH,#2
834 LDREG EP8BCL,#0 ; arm it
0206 22 838 ret
839 ;
0207 840 fill_and_arm_EP6_buffers:
0207 74FE 841 mov a,#0FEh ; fill first buffer with FE's
0209 90F800 842 mov dptr,#EP6FIFOBUF
020C 513A 843 call fill_EP68_IN
844 LDREG EP6FIFOBUF+511,#1 ; mark packet #1
848 LDREG EP6BCH,#2 ; Arm EP6-IN: 200h is 512 bytes
852 LDREG EP6BCL,#0 ; arm it
856 ;
0220 74FF 857 mov a,#0FFh ; fill second buffer with 1's
0222 90F800 858 mov dptr,#EP6FIFOBUF
0225 513A 859 call fill_EP68_IN
860 LDREG EP6FIFOBUF+511,#2 ; mark packet #2
864 LDREG EP6BCH,#2
868 LDREG EP6BCL,#0 ; arm it
0239 22 872 ret
873 ;
023A 7D00 874 fill_EP68_IN: mov r5,#0
023C 7E02 875 mov r6,#2 ; 2 times 256
023E F0 876 fill: movx @dptr,a ; fill 512 byte buffer with value in a
023F A3 877 inc dptr
0240 DDFC 878 djnz r5,fill
0242 DEFA 879 djnz r6,fill
0244 22 880 ret
881 ;
882 ; Arm the OUT endpoints (EP2 & EP4). Unlike EZ-USB, the FX2 OUT endpoints come up unarmed.
883 ; We need to write the byte count twice to account for the double-buffering
884 ;
0245 885 arm_EP24: LDREG EP2BCL,#80h ; set the 'skip' bit (b7) so OUT packets not
889 LDREG EP2BCL,#80h ; transferred to ext interface which would hang the
893 LDREG EP4BCL,#80h ; OUT transfers since there's nothing to re-arm⌨️ 快捷键说明
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