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Diffstat (limited to 'usbdux/usbduxfast_firmware.asm')
| -rw-r--r-- | usbdux/usbduxfast_firmware.asm | 547 |
1 files changed, 547 insertions, 0 deletions
diff --git a/usbdux/usbduxfast_firmware.asm b/usbdux/usbduxfast_firmware.asm new file mode 100644 index 0000000..0d8e7f8 --- /dev/null +++ b/usbdux/usbduxfast_firmware.asm @@ -0,0 +1,547 @@ +; usbduxfast_firmware.asm +; Copyright (C) 2004,2009 Bernd Porr, Bernd.Porr@f2s.com +; +; This program is free software; you can redistribute it and/or modify +; it under the terms of the GNU General Public License as published by +; the Free Software Foundation; either version 2 of the License, or +; (at your option) any later version. +; +; This program is distributed in the hope that it will be useful, +; but WITHOUT ANY WARRANTY; without even the implied warranty of +; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +; GNU General Public License for more details. +; +; You should have received a copy of the GNU General Public License +; along with this program; if not, write to the Free Software +; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +; +; +; Firmware: usbduxfast_firmware.asm for usbdux.c +; Description: Firmware for usbduxfast +; Devices: [ITL] USB-DUX (usbdux.o) +; Author: Bernd Porr <Bernd.Porr@f2s.com> +; Updated: 17 Apr 2009 +; Status: stable +; +;;; +;;; +;;; + + .inc fx2-include.asm + + .equ WFLOADED,70H ; waveform is loaded + + .org 0000h ; after reset the processor starts here + ljmp main ; jump to the main loop + + .org 0043h ; the IRQ2-vector + ljmp jmptbl ; irq service-routine + + .org 0100h ; start of the jump table + +jmptbl: ljmp sudav_isr + nop + ljmp sof_isr + nop + ljmp sutok_isr + nop + ljmp suspend_isr + nop + ljmp usbreset_isr + nop + ljmp hispeed_isr + nop + ljmp ep0ack_isr + nop + ljmp spare_isr + nop + ljmp ep0in_isr + nop + ljmp ep0out_isr + nop + ljmp ep1in_isr + nop + ljmp ep1out_isr + nop + ljmp ep2_isr + nop + ljmp ep4_isr + nop + ljmp ep6_isr + nop + ljmp ep8_isr + nop + ljmp ibn_isr + nop + ljmp spare_isr + nop + ljmp ep0ping_isr + nop + ljmp ep1ping_isr + nop + ljmp ep2ping_isr + nop + ljmp ep4ping_isr + nop + ljmp ep6ping_isr + nop + ljmp ep8ping_isr + nop + ljmp errlimit_isr + nop + ljmp spare_isr + nop + ljmp spare_isr + nop + ljmp spare_isr + nop + ljmp ep2isoerr_isr + nop + ljmp ep4isoerr_isr + nop + ljmp ep6isoerr_isr + nop + ljmp ep8isoerr_isr + + + ;; dummy isr +sof_isr: +sudav_isr: +sutok_isr: +suspend_isr: +usbreset_isr: +hispeed_isr: +ep0ack_isr: +spare_isr: +ep0in_isr: +ep0out_isr: +ep1out_isr: +ep1in_isr: +ibn_isr: +ep0ping_isr: +ep1ping_isr: +ep2ping_isr: +ep4ping_isr: +ep6ping_isr: +ep8ping_isr: +errlimit_isr: +ep2isoerr_isr: +ep4isoerr_isr: +ep6isoerr_isr: +ep8isoerr_isr: +ep6_isr: +ep2_isr: +ep8_isr: + + push dps + push dpl + push dph + push dpl1 + push dph1 + push acc + push psw + + ;; clear the USB2 irq bit and return + mov a,EXIF + clr acc.4 + mov EXIF,a + + pop psw + pop acc + pop dph1 + pop dpl1 + pop dph + pop dpl + pop dps + + reti + + +;;; main program +;;; basically only initialises the processor and +;;; then engages in an endless loop +main: + mov dptr,#REVCTL + mov a,#00000011b ; allows skip + lcall syncdelaywr + + mov DPTR,#CPUCS ; CPU control register + mov a,#00010000b ; 48Mhz + lcall syncdelaywr + + mov dptr,#IFCONFIG ; switch on IFCLK signal + mov a,#10100010b ; gpif, 30MHz + lcall syncdelaywr + + mov dptr,#FIFORESET + mov a,#80h + lcall syncdelaywr + mov a,#8 + lcall syncdelaywr + mov a,#2 + lcall syncdelaywr + mov a,#4 + lcall syncdelaywr + mov a,#6 + lcall syncdelaywr + mov a,#0 + lcall syncdelaywr + + mov dptr,#INTSETUP ; IRQ setup register + mov a,#08h ; enable autovector + lcall syncdelaywr + + lcall initeps ; init the isochronous data-transfer + + lcall initGPIF + +;;; main loop + +mloop2: + lcall gpif_run + sjmp mloop2 ; do nothing. The rest is done by the IRQs + + +gpif_run: + mov a,WFLOADED + jz no_trig ; do not trigger + mov a,GPIFTRIG ; GPIF status + anl a,#80h ; done bit + jz no_trig ; GPIF busy + +;;; gpif has stopped + mov a,#06h ; RD,EP6 + mov GPIFTRIG,a +no_trig: + ret + + + +initGPIF: + mov DPTR,#EP6CFG ; BLK data from here to the host + mov a,#11100000b ; Valid, quad buffering + lcall syncdelaywr ; write + + mov dptr,#EP6FIFOCFG + mov a,#00001001b ; autoin, wordwide + lcall syncdelaywr + + mov dptr,#EP6AUTOINLENH + mov a,#00000010b ; 512 bytes + lcall syncdelaywr ; write + + mov dptr,#EP6AUTOINLENL + mov a,#00000000b ; 0 + lcall syncdelaywr ; write + + mov dptr,#GPIFWFSELECT + mov a,#11111100b ; waveform 0 for FIFO RD + lcall syncdelaywr + + mov dptr,#GPIFCTLCFG + mov a,#10000000b ; tri state for CTRL + lcall syncdelaywr + + mov dptr,#GPIFIDLECTL + mov a,#11111111b ; all CTL outputs high + lcall syncdelaywr + mov a,#11111101b ; reset counter + lcall syncdelaywr + mov a,#11111111b ; reset to high again + lcall syncdelaywr + + mov a,#00000010b ; abort when full + mov dptr,#EP6GPIFFLGSEL + lcall syncdelaywr + + mov a,#00000001b ; stop when buffer overfl + mov dptr,#EP6GPIFPDFSTOP + lcall syncdelaywr + + mov a,#0 + mov dptr,#GPIFREADYCFG + lcall syncdelaywr + + mov a,#0 + mov dptr,#GPIFIDLECS + lcall syncdelaywr + +; waveform 1 +; this is a dummy waveform which is used +; during the upload of another waveform into +; wavefrom 0 +; it branches directly into the IDLE state + mov dptr,#0E420H + mov a,#00111111b ; branch to IDLE + lcall syncdelaywr + + mov dptr,#0E428H ; opcode + mov a,#00000001b ; deceision point + lcall syncdelaywr + + mov dptr,#0E430H + mov a,#0FFH ; output is high + lcall syncdelaywr + + mov dptr,#0E438H + mov a,#0FFH ; logic function + lcall syncdelaywr + +; signals that no waveform 0 is loaded so far + mov WFLOADED,#0 ; waveform flag + + ret + + + +;;; initilise the transfer +;;; It is assumed that the USB interface is in alternate setting 1 +initeps: + mov DPTR,#EP4CFG + mov a,#10100000b ; valid, bulk, out + lcall syncdelaywr + + mov dptr,#EP4BCL ; "arm" it + mov a,#00h + lcall syncdelaywr ; wait until we can write again + lcall syncdelaywr ; wait + lcall syncdelaywr ; wait + + mov DPTR,#EP8CFG + mov a,#0 ; disable EP8, it overlaps with EP6!! + lcall syncdelaywr + + mov dptr,#EPIE ; interrupt enable + mov a,#00100000b ; enable irq for ep4 + lcall syncdelaywr ; do it + + mov dptr,#EPIRQ ; clear IRQs + mov a,#00100100b + movx @dptr,a + + mov DPTR,#USBIE ; USB int enable register + mov a,#0 ; SOF etc + movx @DPTR,a ; + + mov DPTR,#GPIFIE ; GPIF int enable register + mov a,#0 ; done IRQ + movx @DPTR,a ; + + mov EIE,#00000001b ; enable INT2 in the 8051's SFR + mov IE,#80h ; IE, enable all interrupts + + ret + + +;;; interrupt-routine for ep4 +;;; receives the channel list and other commands +ep4_isr: + push dps + push dpl + push dph + push dpl1 + push dph1 + push acc + push psw + push 00h ; R0 + push 01h ; R1 + push 02h ; R2 + push 03h ; R3 + push 04h ; R4 + push 05h ; R5 + push 06h ; R6 + push 07h ; R7 + + mov dptr,#0f400h ; FIFO buffer of EP4 + movx a,@dptr ; get the first byte + + mov dptr,#ep4_jmp ; jump table for the different functions + rl a ; multiply by 2: sizeof sjmp + jmp @a+dptr ; jump to the jump table + +ep4_jmp: + sjmp storewaveform ; a=0 + sjmp init_ep6 ; a=1 + +init_ep6: + ; stop ep6 + ; just now do nothing + + ljmp over_wf + + +storewaveform: + mov WFLOADED,#0 ; waveform flag + + mov dptr,#EP6FIFOCFG + mov a,#00000000b ; + lcall syncdelaywr + + mov dptr,#GPIFABORT + mov a,#0ffh ; abort all transfers + lcall syncdelaywr + +wait_f_abort: + mov a,GPIFTRIG ; GPIF status + anl a,#80h ; done bit + jz wait_f_abort ; GPIF busy + + mov dptr,#GPIFWFSELECT + mov a,#11111101b ; select dummy waveform + movx @dptr,a + lcall syncdelay + + mov dptr,#FIFORESET + mov a,#80h ; NAK + lcall syncdelaywr + mov a,#6 ; reset EP6 + lcall syncdelaywr + mov a,#0 ; normal op + lcall syncdelaywr + +; change to dummy waveform 1 + mov a,#06h ; RD,EP6 + mov GPIFTRIG,a + +; wait a bit + mov r2,255 +loopx: + djnz r2,loopx + +; abort waveform if not already so + mov dptr,#GPIFABORT + mov a,#0ffh ; abort all transfers + lcall syncdelaywr + +; wait again + mov r2,255 +loopx2: + djnz r2,loopx2 + +; check for DONE +wait_f_abort2: + mov a,GPIFTRIG ; GPIF status + anl a,#80h ; done bit + jz wait_f_abort2 ; GPIF busy + +; upload the new waveform into waveform 0 + mov AUTOPTRH2,#0E4H ; XDATA0H + lcall syncdelay + mov AUTOPTRL2,#00H ; XDATA0L + lcall syncdelay + + mov AUTOPTRH1,#0F4H ; EP4 high + lcall syncdelay + mov AUTOPTRL1,#01H ; EP4 low + lcall syncdelay + + mov AUTOPTRSETUP,#7 ; autoinc and enable + lcall syncdelay + + mov r2,#20H ; 32 bytes to transfer + +wavetr: + mov dptr,#XAUTODAT1 + movx a,@dptr + lcall syncdelay + mov dptr,#XAUTODAT2 + movx @dptr,a + lcall syncdelay + djnz r2,wavetr + + mov dptr,#EP6FIFOCFG + mov a,#00001001b ; autoin, wordwide + lcall syncdelaywr + + mov dptr,#GPIFWFSELECT + mov a,#11111100b + movx @dptr,a + lcall syncdelay + + mov dptr,#FIFORESET + mov a,#80h ; NAK + lcall syncdelaywr + mov a,#6 ; reset EP6 + lcall syncdelaywr + mov a,#0 ; normal op + lcall syncdelaywr + + mov dptr,#0E400H+10H; waveform 0: first CTL byte + movx a,@dptr ; get it + orl a,#11111011b ; force all bits to one except the range bit + mov dptr,#GPIFIDLECTL + lcall syncdelaywr + + mov WFLOADED,#1 ; waveform flag + +; do the common things here +over_wf: + mov dptr,#EP4BCL + mov a,#00h + movx @DPTR,a ; arm it + lcall syncdelay ; wait + movx @DPTR,a ; arm it + lcall syncdelay ; wait + + ;; clear INT2 + mov a,EXIF ; FIRST clear the USB (INT2) interrupt request + clr acc.4 + mov EXIF,a ; Note: EXIF reg is not 8051 bit-addressable + + mov DPTR,#EPIRQ ; + mov a,#00100000b ; clear the ep4irq + movx @DPTR,a + + pop 07h + pop 06h + pop 05h + pop 04h ; R4 + pop 03h ; R3 + pop 02h ; R2 + pop 01h ; R1 + pop 00h ; R0 + pop psw + pop acc + pop dph1 + pop dpl1 + pop dph + pop dpl + pop dps + reti + + +;; need to delay every time the byte counters +;; for the EPs have been changed. + +syncdelay: + nop + nop + nop + nop + nop + nop + nop + nop + nop + ret + + +syncdelaywr: + lcall syncdelay + movx @dptr,a + ret + + +.End + + + + + + + + + + + + |