... I've had this happen on a 2136 for no obvious reason - It was recoverable by putting the chip in ISP mode (P0.14 low on reset) then reprogramming via JTAG....
36105
senhoruilson
Oct 1, 2008 5:42 pm
Ok, i will try this and post the results. Thanx a lot for your attention Lucas...
36106
senhoruilson
Oct 1, 2008 5:43 pm
Thank you very very much. I will try it today and post the results. my best regards, Lucas ... http://www.flashmagictool.com/ to ... BootROM. ... legally ... ...
36107
senhoruilson
Oct 1, 2008 5:46 pm
Leon, i did not connect anything with the board powered up, but im still not sure the JTAG isnt damaged ... would it be possible for the jtag to get damaged...
36108
senhoruilson
Oct 1, 2008 5:48 pm
I have some max232 here so i will try to accomplish this serial connection and erase the chip. thank you for your attention. my best regards, Lucas...
36109
amitgpd
Oct 1, 2008 5:51 pm
I want to interface sd/mmc card to lpc2214 and then implement FAT file system. Please help...
36110
Leon
leon_heller
Oct 1, 2008 5:56 pm
... From: "senhoruilson" <wigans@...> To: <lpc2000@yahoogroups.com> Sent: Wednesday, October 01, 2008 6:45 PM Subject: [lpc2000] Re: HELP! lost my JTAG...
36111
senhoruilson
Oct 1, 2008 6:16 pm
One question : i have 2 UARTS on LPC2148. Can i choose any for the ISP ? The pin P0.14 is described as "Data Carrier Detect input for UART1" . is that the pin...
36112
madid87
Oct 1, 2008 6:41 pm
I just have one more question about LCD controller problem. What about executing program code from external FLASH? That is around 4bytes/Hz of data and I...
36113
Zach
eremitic193
Oct 1, 2008 7:10 pm
You must use UART0 for ISP Bootloader. P0.14 is the correct pin to use to enter ISP Mode. At least by glancing at some schematics from our devices that happen...
36114
winbond2
Oct 1, 2008 7:14 pm
Hi All, I have only seen the Embedded Artist LPC2478 development kits (see here http://tinyurl.com/4ldzna ) Questions Q1 Has anyone see other LPC2478...
36115
senhoruilson
Oct 1, 2008 8:13 pm
Hello all ! the problem was solved as soon as i reprogrammed the chip using ISP and 'flash magic tool' . I happened to have a 'FTDI TTL-232R-3V3' usb cable...
36116
Zach
eremitic193
Oct 1, 2008 8:22 pm
It sounds like your application uses a PIN that JTAG needs to use. Your application was running and had control of that pin. (Most likely setup as an output)....
36117
Charles R. Grenz
charles_grenz
Oct 1, 2008 8:34 pm
... CRP being set? Charles...
36118
Zach
eremitic193
Oct 1, 2008 8:39 pm
CRP is what I had originally suggested but given that they were working with IO Pins and said that it seemed to be working for awhile and then stopped is what...
36119
Sutton Mehaffey
dodge1955
Oct 1, 2008 8:40 pm
I'm interested in people's opinion on this. I am using a I2C Graphical Display interfaced with a LPC2148. On occasion, the I2C command sent out drops a byte...
36120
senhoruilson
Oct 1, 2008 8:48 pm
No, i reprogrammed it without setting CRP. Should I ? ... what ... where...
36121
Zach
eremitic193
Oct 1, 2008 8:50 pm
Certain levels of CRP can cause the JTAG to NOT work see. UM10139 . If you want to be sure that CRP is not causing the JTAG problem you should have it turned...
36122
senhoruilson
Oct 1, 2008 8:56 pm
So, here are the results of my latest tests : i recompiled the code with some modifications in order to try to detect the bad pin. when i configured pin 1.24...
36123
senhoruilson
Oct 1, 2008 8:58 pm
oohh, now i think i understand its function! its a kind of read protection to avoyd reversal engeneering ?? thanks...
36124
Laurie Gellatly
netic_id
Oct 1, 2008 9:00 pm
With that kind of support I'd vote by taking my display business to someone that will provide ack/nak response. Can you improve the noise reduction? Better not...
36125
Paul Curtis
paul_l_curtis
Oct 1, 2008 9:00 pm
Hi, ... Olimex LPC2478-STK and the NXP IRD. Use Google. ... Loads I expect. ... We have both. The 2478-STK is great. -- Paul Curtis, Rowley Associates Ltd...
36126
Zach
eremitic193
Oct 1, 2008 9:05 pm
Correct on the reverse engineering thing ... From: senhoruilson To: lpc2000@yahoogroups.com Sent: Wednesday, October 01, 2008 3:58 PM Subject: [lpc2000] Re:...
36127
Sutton Mehaffey
dodge1955
Oct 1, 2008 9:13 pm
There aren't too many I2C graphical display companies around. Most still use RS232. I don't know if it is noise or not. Haven't determined the cause. ...
36128
Zach
eremitic193
Oct 1, 2008 9:16 pm
When I get a chance I'll look through the Embedded Trace Macrocell (Ch 23) which uses P1.25 and see if there is anything there that can cause jtag to stop...
36129
Michael Anton
mike_antonca
Oct 1, 2008 9:28 pm
... Please look at previous messages in this group. This has been discussed many times. Mike...
36130
senhoruilson
Oct 1, 2008 10:18 pm
I read the manual on chapter 23 and understood that pin P1.25 is the EXTIN[0] wich is labelled as external trigger input on the 'embedded trace macrocell' . i...
36131
Zach
eremitic193
Oct 2, 2008 12:14 am
Can you post an snippet of your code that shows how you are setting up your GPIO please IE: where you define your pins as inputs or outputs ... From:...
36132
empresst007
Oct 2, 2008 1:39 am
Hey All, I've got a strange phenomenon happening on my Olimex LPC2138 devel board. It's been about a month since I last touched my project and I was getting...
36133
J.C. Wren
jcwren
Oct 2, 2008 1:52 am
Motors are a terrible source of noise. Do you have an oscilloscope you can use to look at any of the lines going back to the board? Check your power supply,...
