LPC1768 OpenOCD and NGX JTAG

Started by rakesh ranjan in LPC20006 years ago 1 reply

Hi, I wish to debug LPC1768 with OpenOCD over JTAG. Is there a difference between FTDI's FT2232 based JTAG debuggers when provided by...

Hi, I wish to debug LPC1768 with OpenOCD over JTAG. Is there a difference between FTDI's FT2232 based JTAG debuggers when provided by different vendors ? Somehow i'm not able to attach my board with OpenOCD. Any headstart will be appreciated. Rakesh ------------------------------------


Re: PROBLEM WITH JTAG PRIMARY

Started by Milos Prokic in LPC200014 years ago 2 replies

No.. if you want to salvage some pins use secondary jtag. Cheers, m. _____ From: gianlucamarcante [mailto:]...

No.. if you want to salvage some pins use secondary jtag. Cheers, m. _____ From: gianlucamarcante [mailto:] Sent: Thursday, March 03, 2005 8:43 AM To: Subject: [lpc2000] PROBLEM WITH JTAG PRIMARY


LPC2106: can I use P0.22-P0.30 as "output" with primary JTAG?

Started by volodymyr_tymchyshyn in LPC200013 years ago 2 replies

Hello, I am using Olimex "LPC-P2106" board with JTAG pins P0.17-P0.21 (primary group). I prototype with LCD, so I need almost all pins set as...

Hello, I am using Olimex "LPC-P2106" board with JTAG pins P0.17-P0.21 (primary group). I prototype with LCD, so I need almost all pins set as "out" or "io". I there any trick to set pins P0.22-P0.30 (used for alternative JTAG and Trace) to output mode, while using the JTAG debugging? It looks like using them as "input" is not an issue (P0.31 is used for button on "LPC-P2106") but they do ...


Problems with JTAG / Embedded ICE module

Started by Rob Jansen in LPC200014 years ago 2 replies

JTAG is running but ... OK, I have got the JTAG stuff running fairly well. I can read the DCC registers in the EmbeddedICE and...

JTAG is running but ... OK, I have got the JTAG stuff running fairly well. I can read the DCC registers in the EmbeddedICE and communicate with the target in this way. I also have access to the run control: I can halt the ARM code and clock instructions into the pipeline - but here is were things get messed up: After halting the core by asserting


Re: Jtag emulation in LPC?

Started by Leon in LPC200012 years ago 1 reply

----- Original Message ----- From: "cippalippa1967" To: Sent: Monday, December 10, 2007 11:22 AM Subject: [lpc2000] Jtag emulation in...

----- Original Message ----- From: "cippalippa1967" To: Sent: Monday, December 10, 2007 11:22 AM Subject: [lpc2000] Jtag emulation in LPC? > Hi. > > I'm trying to program a Xilinx fpga by a LPC2378 at the board start. > I would like to use the jtag protocol for this (I already know that is > possible to use the simple serial slave mode too); may s


LPC2148 JTAG port resistors

Started by trfillos in LPC200013 years ago 2 replies

Hello to all, I have found alot of schematics having the JTAG signals nTRST, TDI, TMS and TDO pulled high with resistors and TCK pulled low...

Hello to all, I have found alot of schematics having the JTAG signals nTRST, TDI, TMS and TDO pulled high with resistors and TCK pulled low just before the JTAG connector. I can not figure out why these resistors are needed. Can someone please tell me why? Thank you very much for your time. Triantafillos.


JTAG - /TRST Pin state on the LPC213x

Started by jim_e_dallas in LPC200015 years ago

FYI, I just found out that for the JTAG interface to work proprly on the LPC213xdevices, P0.31 (/TRST) needs to be tied high....

FYI, I just found out that for the JTAG interface to work proprly on the LPC213xdevices, P0.31 (/TRST) needs to be tied high. (unless you are want to reset the JTAG interface.) This was not clear in the documentation. Regards, Jim


Jtag from k9spud

Started by punkandsska123 in LPC200013 years ago 10 replies

Hi, I recently made the Jtag board from k9spud and I seem to have some problems with it. I tested the parrallel port with debug and it...

Hi, I recently made the Jtag board from k9spud and I seem to have some problems with it. I tested the parrallel port with debug and it works. When I switch in Rowley Crosstudio and I try to connect the Wriggler I had a message box that say. Cannot Identify Target Check JTAG connection What do you think the problem is. Thanks a lot.


JTAG testing

Started by jk jlkj in LPC200013 years ago

Hi Friends, Sry to ask so many questions, but this JTAG problem is really bugging me. I would like to know if there is any test other...

Hi Friends, Sry to ask so many questions, but this JTAG problem is really bugging me. I would like to know if there is any test other than the IAR DOWNLOAD that i could run inorder to ensure that the JTAG is functioning properly. Regards, Jerome --------------------------------- Jiyo cricket on Yahoo! India cricket Yahoo! Messenger Mobile Stay in touch with your buddies...


software killing off the JTAG connection?

Started by "Andrew Kohlsmith (mailing lists account)" in LPC20009 years ago 3 replies

Good evening, everyone, I'm playing around with an LPC2103 and I've noticed that I'm able to cause the JTAG connection to fail. I'm still...

Good evening, everyone, I'm playing around with an LPC2103 and I've noticed that I'm able to cause the JTAG connection to fail. I'm still trying to nail down exactly what is causing it, but I'm wondering if there are known ways to cause this to occur without playing with the LPC's code protection registers. It's connected to an Olimex ARM-USB-JTAG and I'm driving that with OpenOCD and...


Re: setting clock on LPC23xx & 24xx via JTAG fails

Started by Tom Walsh in LPC200012 years ago 2 replies

Joe wrote: > > I'm using OpenOCD and the Olimex ARM-USB-OCD JTAG adapter with some > LPC23xx and LPC24xx boards. I am attempting to change...

Joe wrote: > > I'm using OpenOCD and the Olimex ARM-USB-OCD JTAG adapter with some > LPC23xx and LPC24xx boards. I am attempting to change the system clock > from the settings configured by the ISP boot code. But as soon as I > disconnect the PLL, I loose the JTAG connection. > > Basically, this command sequence kills JTAG: > > mwb 0xe01fc080 0x1 #disconnect PLL > mwb 0xe01fc08c 0xaa #PL


LPC2103 idle/doze mode, how to recover JTAG?

Started by "Andrew Kohlsmith (mailing lists account)" in LPC20009 years ago 1 reply

Good evening, everyone, It makes sense that when you put the LPC into idle or doze mode (and RTC deep sleep mode as well, presumably) you...

Good evening, everyone, It makes sense that when you put the LPC into idle or doze mode (and RTC deep sleep mode as well, presumably) you lose JTAG communications. In hindsight, it's obvious. Is there a way to recover the JTAG connection without causing an ARM7 reset? My application goes to sleep and wakes up fairly often but if openocd (using an ARM-USB-JTAG) sees the connection die...


JTAG Serial

Started by P e t e r s in LPC200013 years ago 6 replies

Hello people! I'm new in this group, and new in LPC2000 family. I need help to build a serial JTAG for this family, is this possible? I only...

Hello people! I'm new in this group, and new in LPC2000 family. I need help to build a serial JTAG for this family, is this possible? I only find parallel JTAG still now. Tanks! -- Eduardo Peters from Brazil


setting clock on LPC23xx & 24xx via JTAG fails

Started by Joe in LPC200012 years ago

I'm using OpenOCD and the Olimex ARM-USB-OCD JTAG adapter with some LPC23xx and LPC24xx boards. I am attempting to change the system clock...

I'm using OpenOCD and the Olimex ARM-USB-OCD JTAG adapter with some LPC23xx and LPC24xx boards. I am attempting to change the system clock from the settings configured by the ISP boot code. But as soon as I disconnect the PLL, I loose the JTAG connection. Basically, this command sequence kills JTAG: mwb 0xe01fc080 0x1 #disconnect PLL mwb 0xe01fc08c 0xaa #PLL Feed ...


LPC2138

Started by sudip nag in LPC200014 years ago 4 replies

Hi Everyone, I like to start with LPC2138 JTAG programming. Can you provide a link from where I will get the 14 pin and 20 pin JTAG...

Hi Everyone, I like to start with LPC2138 JTAG programming. Can you provide a link from where I will get the 14 pin and 20 pin JTAG Wiggler Circuits. I find Olimex is not disclosing the ARM-JTAG circuit. Regards. Sudip Nag Yahoo! India Matrimony: Find your life partneronline.


jtag choice

Started by Ghislain in LPC200014 years ago 28 replies

Hello I will buy my first ARM board in the next week (I'm a newer in the ARM World) and the main question I'm asking is: Which...

Hello I will buy my first ARM board in the next week (I'm a newer in the ARM World) and the main question I'm asking is: Which JTAG-USB must I buy and What are the difference between them: There are U-LINK from KEIL and J-LINK from IAR or simply a JTAG through the parallel port? I will work with LPC21XX and LPC22XX and and I've got


Definitely scrap the JTAG...

Started by nuncio_bitis in LPC200014 years ago 3 replies

So Ive done some investigation into OCDRemote... I've checked my JTAG connector, and pins 8 and 15 *are* connected. It seems OCDRemote has...

So Ive done some investigation into OCDRemote... I've checked my JTAG connector, and pins 8 and 15 *are* connected. It seems OCDRemote has changed again so that JTAG debugging doesn't work. ALl I can do is connect and download to RAM, but as soon as I try to start debugging in insight, OCDRemote shuts down gracefully. I've scoured through discussion groups lookin


Does anyone know IAR Embedded JTAG ?

Started by ligfietser2003 in LPC200013 years ago 6 replies

Hi, I came across a new board from our Swedish 'friends': http://www.embeddedartists.com/products/boards/lpc2104_pro002.php It contains an...

Hi, I came across a new board from our Swedish 'friends': http://www.embeddedartists.com/products/boards/lpc2104_pro002.php It contains an Embedded JTAG which contains an lpc2148 and sits in between the target's JTAG and the PC's USB port. Does anyone know what kind of interface this uses? Is it also usable with GDB or the ARM tools (using RDI) or is this a proprietary interface (whic...


JTAG stopped communicating - LPC2148

Started by Sutton Mehaffey in LPC20009 years ago 18 replies

Anyone ever had mysterious Comm failures with JTAG after long periods of being able to program successfully? I haven't had one in about 9...

Anyone ever had mysterious Comm failures with JTAG after long periods of being able to program successfully? I haven't had one in about 9 months, but usually reprogramming via serial port cures the problem. I have one of these annoyances now, but I can still program serially 100% of the time, but JTAG still doesn't work. I've: 1. changed and programmed 3 different CPUs serially, bu...


Minimum JTAG connection?

Started by Brian C. Lane in LPC200016 years ago 1 reply

What is the minimum number of pins needed for a JTAG connection? I see there are 2 JTAG ports on the LPC2106? Does it matter which...

What is the minimum number of pins needed for a JTAG connection? I see there are 2 JTAG ports on the LPC2106? Does it matter which ones are used, or is it just there to make it easier to dedicate pins to it? I think that it should be: TRST - p0.17 TMS - p0.18