SparkFun Forums

[mayur]

i'm getting a consistent problem while establishing the connection link with the Olimex's ARM-USB-OCD Device. if anyone faced the same problem and solved , please reply soon!! i'm badly stucked!!
i'm getting an error while clicking on to openocd utility as

Info:openocd.c:82 main():Open On-Chip Debugger(2006-10-12 18:00 CEST)

Error: ft2232.c:225 ft2232_read(): couldn't read the requested no. of bytes from FT2232 device(0<2)

Error: ft2232.c:365 ft2232_send_and_recv(): couldn't from FT2232

[Dominic]

Hi,

try using a self-powered USB hub. You should also make sure that the drivers have been correctly installed, and that you're using the latest version of OpenOCD available.

Regards,

Dominic

[mayur]

hi, Dominic , thanks for ur reply..
i tried it again using self powered USB hub, but i'm still getting the same error!! can there be any other possibility of error may be ralated to configuration file or anything else??

[mayur]

hi, again
further i'd cautiously verified the driver's installation and i'm sure about using the very latest version of OpenOCD

regards,
mayur

[mifi]

Hello mayur,

do you have some more information?
Which OS do you used?
How does your config file look?
If you start openocd with -h parameter, what is displayed?

Regards,

Michael

[mayur]

Hello Michael,
i'm using Windows XP OS. and i'm working on latest version on Olimex Package which uses Eclipse IDE as a compilation platform. the confg. file is lpc2xxx_armusbocd.cfg. and i'm also using a self powered usb hub as suggested by Dominic earlier.
please reply soon for any more details u want ! thanks,
regards,
Mayur

[mifi]

Hello Mayur,

which version of OpenOCD you use?

>Info:openocd.c:82 main():Open On-Chip Debugger(2006-10-12 18:00 CEST)

This could be the r115, is this correct?

>and i'm working on latest version on Olimex Package
What is the latest Olimex Package?

What is your target?

Regards,

Michael

[mayur]

Hi Michael,
>offcourse i'm using r115 version of openocd.
> i had installed the pre-assembled package (OLIMEX-GCCFD-190207.exe) came up in the CD provided with Olimex ARM-USB-OCD JTAG connector.
>my Target is arm7tdmi
> and my .cfg file is as follows

***********************************************
#daemon configuration
telnet_port 4444
gdb_port 3333

#interface
interface ft2232
ft2232_device_desc "Olimex OpenOCD JTAG A"
ft2232_layout "olimex-jtag"
ft2232_vid_pid 0x15BA 0x0003
jtag_speed 2

#use combined on interfaces or targets that can't set TRST/SRST separately
reset_config trst_and_srst srst_pulls_trst

#jtag scan chain
#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
jtag_device 4 0x1 0xf 0xe

#target configuration
daemon_startup reset

#target <type> <startup mode>
#target arm7tdmi <reset mode> <chainpos> <endianness> <variant>
target arm7tdmi little run_and_halt 0 arm7tdmi-s_r4
run_and_halt_time 0 30

working_area 0 0x40000000 0x40000 nobackup

#flash configuration
flash bank lpc2000 0x0 0x40000 0 0 lpc2000_v1 0 14765 calc_checksum
flash bank cfi 0x80000000 0x400000 2 2 0

# For more information about the configuration files, take a look at:
# http://openfacts.berlios.de/index-en.ph ... p+Debugger
**********************************************************
>please let me know if else details u want..
Thanks, 'n
Regards,

Mayur

[mifi]

Hello mayur,

more input, please.
It is very dufficult to help, to request each information.

Which CPU, from your cfg file it could be a LPC?????. which one.
Is it a self made board, or have you bougth it, which board?

Have you set the DEBUG jumper at the LPC device?

mifi

[mayur]

hi mifi,
well.. i'm working it on the lpc 2138 ARM learning kit. though it's an in-house built board, it's the standard product of our company . so there might not be any problem from board side . i had checked the jumper and other settings too. i suppose .. the problem would be only in communication link between USB port and arm- usb-ocd device. because even if i take out the JTAG connector from the board , the openocd displays the same error msg. what may be the cause??
any more input u want?? pleae let me know..
thanks for reply..
Regards,

Mayur

[mifi]

Hi mayur,

have you only the ARM-USB-OCD from Olimex, or
can you test it with an other one?

Perhaps with a parport jtag hardware?

Is this your first try with your in-house build board?
Does it work with other JTAG devices?

Have you try to lower the jtag speed?
jtag_speed 10

Regards,

mifi

[mayur]

hi again,
yeah.... it's the only device i'm having at the moment but i' can arrange other too. and yes it's the very first try on our board. i had also tried it at even lower speed. further i tried to make every possible and vallid correction in .cfg file but still getting the same thing.
regards,
mayur

[mifi]

Another idea,

can you try to use OpenOCD r131?
If I start OpenCOD without any target, I got the following info:

Info: openocd.c:84 main(): Open On-Chip Debugger (2007-01-31 12:00 CET)
Error: jtag.c:1224 jtag_examine_chain(): number of discovered devices in JTAG
chain (330) doesn't match configuration (1)

Have you connect the power to the JTAG connector?

This must be an very easy bug

mifi

[mayur]

>well, using r131 might be a nice option to to find out cause ... but i'm having the set up files of r115 only which are provided with the arm-usb-ocd pack (CD). but if u could give me the source from where i can get it.. i can go for it.
>there is no distinct power connected to the JTAG connector as it already embedded in the board itself
regards,
mayur

[Dominic]

This is definitely not a config file issue, and I don't think it's a software problem either - the FT2232 /must/ answer to this request - if it doesn't, the chip stopped working.

Laurent Gauch from Amontec once talked about ground loops with regard to a similar problem - could you verify that this doesn't affect you?

Regards,

Dominic