Transfer mode for data is now bulk. If a buffer overflow occurrs
the next packet has two 0xff at the begining.
This commit is contained in:
Bernd Porr
parent
ca83900fcf
commit
22eea6221e
2 changed files with 76 additions and 56 deletions
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@ -1,4 +1,4 @@
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; usbdux_firmware.asm
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; usbduxfast_firmware.asm
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; Copyright (C) 2004 Bernd Porr, Bernd.Porr@cn.stir.ac.uk
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;
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; This program is free software; you can redistribute it and/or modify
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@ -16,11 +16,11 @@
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; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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;
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;
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; Firmware: usbdux_firmware.asm for usbdux.c
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; Description: xxx
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; Firmware: usbduxfast_firmware.asm for usbdux.c
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; Description: Firmware for usbduxfast
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; Devices: [ITL] USB-DUX (usbdux.o)
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; Author: Bernd Porr <Bernd.Porr@f2s.com>
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; Updated:
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; Updated: 4 Jan 2005
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; Status: testing
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;
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;;;
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@ -170,7 +170,7 @@ main:
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lcall syncdelaywr
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mov dptr,#IFCONFIG ; switch on IFCLK signal
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mov a,#10110010b ; gpif, 30MHz,
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mov a,#10100010b ; gpif, 30MHz,
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lcall syncdelaywr
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mov dptr,#FIFORESET
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@ -209,6 +209,19 @@ gpif_run:
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anl a,#80h ; done bit
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jz no_trig ; GPIF busy
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;;; buffer overflow
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mov dptr,#0F800H ; EP8 fifo buffer
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mov a,#0ffh ; error
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movx @dptr,a ; write ffh into the EP buffer
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inc dptr ; next byte
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movx @dptr,a ; write ffh into the EP buffer
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mov dptr,#EP6BCH ; byte count EP6 high byte
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mov a,#02H ; 512 bytes
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lcall syncdelaywr ; write to memory and sync
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mov dptr,#EP6BCL ; byte count EP6 low byte
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mov a,#0 ; low byte is zero
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lcall syncdelaywr ; write to memory and sync
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mov a,#06h ; RD,EP6
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mov GPIFTRIG,a
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no_trig:
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@ -217,9 +230,9 @@ no_trig:
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initGPIF:
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mov DPTR,#EP6CFG ; ISO data from here to the host
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mov a,#11010000b ; Valid, quad buffering
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lcall syncdelaywr
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mov DPTR,#EP6CFG ; BLK data from here to the host
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mov a,#11100000b ; Valid, quad buffering
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lcall syncdelaywr ; write
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mov dptr,#EP6FIFOCFG
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mov a,#00001001b ; autoin, wordwide
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@ -227,15 +240,11 @@ initGPIF:
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mov dptr,#EP6AUTOINLENH
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mov a,#00000010b ; 512 bytes
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lcall syncdelaywr
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lcall syncdelaywr ; write
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mov dptr,#EP6AUTOINLENL
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mov a,#00000000b ; 0
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lcall syncdelaywr
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mov dptr,#EP6ISOINPKTS
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mov a,#1 ; 1 packets
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lcall syncdelaywr
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lcall syncdelaywr ; write
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mov dptr,#GPIFWFSELECT
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mov a,#11111100b ; waveform 0 for FIFO RD
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@ -298,11 +307,11 @@ initGPIF:
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;;; initilise the transfer
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;;; It is assumed that the USB interface is in alternate setting 3
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;;; It is assumed that the USB interface is in alternate setting 1
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initeps:
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mov DPTR,#EP4CFG
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mov a,#10100000b ; valid, bulk, out
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movx @dptr,a
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lcall syncdelaywr
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mov dptr,#EP4BCL ; "arm" it
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mov a,#00h
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@ -312,11 +321,11 @@ initeps:
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mov DPTR,#EP8CFG
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mov a,#0 ; disable EP8, it overlaps with EP6!!
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movx @dptr,a
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lcall syncdelaywr
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mov dptr,#EPIE ; interrupt enable
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mov a,#00100000b ; enable irq for ep4
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movx @dptr,a ; do it
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lcall syncdelaywr ; do it
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mov dptr,#EPIRQ ; clear IRQs
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mov a,#00100100b
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@ -538,3 +547,13 @@ syncdelaywr:
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.End
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@ -3,48 +3,49 @@
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:1001000002017F0002017F0002017F0002017F00E7
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