Hi,
I have a notebook PC that doesn’t have a Parallel Port only USB. In this scenario can I use one of those USB to parallel/serial convertors?
Has anyone used these?
Thanks & Regards
Sukrit
holysmoke:
Hi,I have a notebook PC that doesn’t have a Parallel Port only USB. In this scenario can I use one of those USB to parallel/serial convertors?
Has anyone used these?
Thanks & Regards
Sukrit
Won’t work with a Wiggler-type parallel interface, the software needs to wiggle the port pins directly.
Leon
If you got $400 to spend, here’s a solution for you:
http://www.mpeforth.com/jtagwidget.htm
I haven’t personally used one of these, but it sounds cool.
leon_heller:
holysmoke:
Hi,I have a notebook PC that doesn’t have a Parallel Port only USB. In this scenario can I use one of those USB to parallel/serial convertors?
Has anyone used these?
Thanks & Regards
Sukrit
Won’t work with a Wiggler-type parallel interface, the software needs to wiggle the port pins directly.
Leon
I want to buy LPC-P2148, would I be able to program it using the Flash Tool from Philips using a serial cable and one of those serial to USB interfaces/convertors?
Cheers
Sukrit
Philips ISP works with FTDI USB-RS232 convertor
Tsvetan
For USB JTAG debugging, you might want to take a look at the following website:
http://www.amontec.com/jtagkey.shtml
I have no experience with it though and it is definitely more expensive than the wiggler.
-Adam
to the best of my knowledge this USB-JTAG doesn’t work with anything else beside the openOCD which limites it use a lot
Tsvetan
The fact it does not work with other things may not matter.
The €139 price may be a problem however !
This high price offered by Amontec is not problem if we at Olimex decide to support this and release our own hardware which is pretty simple by the way, but I still can’t decide if we should release one or not. If we go for it it will be much cheaper of course I guess something in $30-40 range, one problem I see is that openOCD is not mature and probably have lot of work on it to improve, like bugs, flash loaders for different vendors, etc etc. The only one who I saw at Embedded to work with openOCD without glitch was Dominic the author, when Dominic was not on the boot the other guys experienced a problem to make it work/ show it working in one or other way, which speaks well for how easy open source / Lunix tools are to work with 
I’m waiting Jim Lynch’s new revision of Eclipse development where he is using openOCD instead the buggy macraigor ocdemon.
Something to consider is also that Dominic is graduating this year and if he get full time job the openOCD maintance will go (probably) at dead end as to the best of my knowledge no body so far expressed desire to contribute in the code or other way to this project, just many peoples are staying aside and watching/waiting if they will got free debugger soon
Tsvetan
The OpenOCD has matured a lot within the 3 month that people have acutally been using it, and started reporting back with problems. People ARE sending patches, both fixing bugs and adding functionality, like support for AT91SAM7 flashes. I’ll integrate these within the next few days.
Yes, there are things you have to be aware of when using the OpenOCD - those that were with me at the booth haven’t used it before, so they didn’t know about these issues. I’m working on some minor changes that will greatly improve stability and usability.
I gave a speech at Fosdem 2006 in brussels last weekend on the OpenOCD, and it was very well accepted.
Hi Dominic,
I didn’t mean to offend you nor to underestimate your work.
I’m sorry if I sounded this way.
In opposite I believe that openOCD if gain popularity and the interest of more peoples who to contribute to it would move well forward and start compete the commercial debuggers in terms of quality and easy to use. What I meant is that supporting such project is too much work for single man, no matter how good programmer is he, and specially if he have at some time point full time job and do this as side activity.
What I think is that integration to IDE like Eclipse and easy Installer package is must to make it attractive to mass ARM beginner user, thus more peoples will be involved with using openOCD and test/report bugs, glitches and contribute with code improvement etc.
You know that there is no code without bugs the better software have just less bugs than the bad software and if more peoples use openOCD the better it will become!
This is more important than if there will be USB-JTAG which will program few seconds faster than the parallel port JTAG. Peoples who are on low budget would not care so much for the speed.
Best regards
Tsvetan
Hello Tsvetan,
thanks for clarifying this. I was actually a bit worried that you might have lost interested in the OpenOCD, but I’m glad you still believe in its ability to improve.
Yeah, the need for GUI integration was something that became apparent to me while I was at the embedded world.
Kind regards,
Dominic
I am interested in helping with OpenOCD.
I agree it will not thrive until it at least it is reliable for some real work.
I would say working well with ARM7TDMI, a wiggler clone and in Eclipse, would be a good start.
Once it has a large base of of satisfied users, the project will grow.
I am developing a PCB based on the FTDI based part of OpenOCD so I am really hoping that OpenOCD works.
I will let you know how I get on!