Error: cannot open device.

Development Boards MicroMod
1

I am using ubuntu 8.0.4 and my cfg file is as follows

------start------------------

# port configurations
telnet_port 4444
gdb_port 3333

# cpu configuration
source [find target/lpc2148.cfg]

# interface configuration
source [find interface/parport.cfg]

--------end-----------------

$ openocd -f test.cfg

I get the following error

Open On-Chip Debugger 0.4.0 (2010-05-18-16:24)

Licensed under GNU GPL v2

For bug reports, read

http://openocd.berlios.de/doc/doxygen/bugs.html

RCLK - adaptive

jtag_nsrst_delay: 200

jtag_ntrst_delay: 200

trst_and_srst srst_pulls_trst srst_gates_jtag trst_push_pull srst_open_drain

parport port = 0x378

Error: cannot open device. check it exists and that user read and write rights are set. errno=2

Command handler execution failed

I checked in /dev directory and /dev/parport0 exists

and i even changed the permissions

by using

$ sudo chmod 777 /dev/parport0

and i disabled lp by adding the following line

blacklist lp to
/etc/modprobe.d/blacklist

and i still get this stupid error.

2

Module Size Used by

rfcomm 41744 2

l2cap 25728 13 rfcomm

bluetooth 61028 4 rfcomm,l2cap

ppdev 10372 0

vmnet 50112 16

vmblock 16672 1

vsock 46368 0

vmci 59608 1 vsock

vmmon 79020 0

acpi_cpufreq 10796 1

cpufreq_stats 7104 0

cpufreq_userspace 5284 0

cpufreq_conservative 8712 0

cpufreq_ondemand 9740 1

freq_table 5536 3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand

cpufreq_powersave 2688 0

ac 6916 0

container 5632 0

video 19856 0

output 4736 1 video

sbs 15112 0

sbshc 7680 1 sbs

dock 11280 0

battery 14212 0

iptable_filter 3840 0

ip_tables 14820 1 iptable_filter

x_tables 16132 1 ip_tables

sbp2 24072 0

lp 12324 0

ipv6 268036 24

snd_usb_audio 83936 0

snd_hda_intel 346264 1

snd_pcm_oss 42144 0

snd_mixer_oss 17920 1 snd_pcm_oss

uvcvideo 58244 0

snd_pcm 78724 3 snd_usb_audio,snd_hda_intel,snd_pcm_oss

snd_seq_dummy 4868 0

compat_ioctl32 2304 1 uvcvideo

snd_seq_oss 35584 0

snd_page_alloc 11400 2 snd_hda_intel,snd_pcm

videodev 29440 1 uvcvideo

snd_usb_lib 18560 1 snd_usb_audio

v4l1_compat 15492 2 uvcvideo,videodev

snd_seq_midi 9376 0

snd_seq_midi_event 8320 2 snd_seq_oss,snd_seq_midi

nvidia 7825536 34

v4l2_common 18304 2 uvcvideo,videodev

snd_rawmidi 25760 2 snd_usb_lib,snd_seq_midi

snd_seq 54224 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event

snd_hwdep 10500 2 snd_usb_audio,snd_hda_intel

i2c_core 24832 1 nvidia

sky2 47620 0

snd_timer 24836 2 snd_pcm,snd_seq

snd_seq_device 9612 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq

snd 56996 15 snd_usb_audio,snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_dummy,snd_seq_oss,snd_usb_lib,snd_rawmidi,snd_seq,snd_hwdep,snd_timer,snd_seq_device

evdev 13056 3

intel_agp 25492 0

pcspkr 4224 0

button 9232 0

parport_pc 36260 1

parport 37832 3 ppdev,lp,parport_pc

iTCO_wdt 13092 0

iTCO_vendor_support 4868 1 iTCO_wdt

shpchp 34452 0

pci_hotplug 30880 1 shpchp

agpgart 34760 2 nvidia,intel_agp

soundcore 8800 1 snd

ext3 136968 1

jbd 48404 1 ext3

mbcache 9600 1 ext3

loop 18948 2

usbhid 32128 0

hid 38784 1 usbhid

sg 36880 0

sr_mod 17956 0

cdrom 37408 1 sr_mod

sd_mod 30720 3

8139cp 24704 0

ata_piix 19588 2

pata_jmicron 7040 1

pata_acpi 8320 0

ohci1394 33584 0

ieee1394 93752 2 sbp2,ohci1394

8139too 27648 0

mii 6400 2 8139cp,8139too

ata_generic 8324 0

libata 159728 4 ata_piix,pata_jmicron,pata_acpi,ata_generic

scsi_mod 151692 5 sbp2,sg,sr_mod,sd_mod,libata

ehci_hcd 37900 0

uhci_hcd 27024 0

usbcore 146412 7 snd_usb_audio,uvcvideo,snd_usb_lib,usbhid,ehci_hcd,uhci_hcd

thermal 16796 0

processor 36616 2 acpi_cpufreq,thermal

fan 5636 0

fbcon 42912 0

tileblit 3584 1 fbcon

font 9472 1 fbcon

bitblit 6784 1 fbcon

softcursor 3072 1 bitblit

fuse 50708 5

3

Hi,

I have encounter the things, don’t open device parport0. I don’t known whether you have solved it. Can you tell me if you have solved it.

4

If you look at the parport.cfg you will see that by default it tries to open address 0x378 - this is the default normally in windows.

Newer versions of the script have a PARPORTADDR var that can be overridden to suit your local setup.

# interface configuration
set PARPORTADDR /dev/parport0
source [find interface/parport.cfg]

Cheers

Spen