embARC with OpenOCD over Digilent USB-JTAG

Development Boards MicroMod
1

Hey,

I have an ARC uC SoC I want to debug.

The Toolchain I use is the GNU ARC compiler from the https://www.embarc.org/ project.

This is using OpenOCD to make a connetion to the Target (ARC EM4 Core, custom board).

My digilent USB-JTAG cable is recognized by Win7 as an ftdi device with vid 0403, pid 6010.

I know the cable is working because it works with another project under SynopsisMetawareDebugger.

My problem is that I get the following error message when trying to start the debug session:

Open On-Chip Debugger 0.9.0-dev-g8a252b3 (2015-06-08-13:44)

Licensed under GNU GPL v2

For bug reports, read

http://openocd.sourceforge.net/doc/doxygen/bugs.html

debug_level: 0

adapter speed: 10000 kHz

Error: unable to open ftdi device: device not found

Error: ListDevices: 2

Error: 0: “Dual RS232 A”

Error: 1: “Dual RS232 B”

Runtime Error: C:\arc_gnu\share\openocd\scripts\board\snps_em_sk_v2.cfg:48:

in procedure ‘script’

at file “embedded:startup.tcl”, line 58

in procedure ‘init’ called at file “C:\arc_gnu\share\openocd\scripts\board\snps_em_sk_v2.cfg”, line 48

I haven’t any clue how to fix that…

Can anyone help me out with this, or at least give a hint please?

thanks a lot!

xaver_aed

2

I have encountered some open-ocd distros that were compiled without the ftdi option.

Check that your usr/local/share/openocd/scripts/interface has a ftdi directory.

John Eaton

3

First of all thanks for your reply!

This is my openocd/skripts directory (olny folders shown),

subfolder “ftdi” exists and is not empty…

.

├── board

├── chip

│ ├── atmel

│ │ └── at91

│ ├── st

│ │ ├── spear

│ │ └── stm32

│ └── ti

│ └── lm3s

├── cpld

├── cpu

│ ├── arc

│ └── arm

├── interface

│ └── ftdi

├── target

├── test

│ └── arc

└── tools

19 directories

Any other ideas?

4

Nobody can help me?

At least with a hint?