We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
Hi, I got this problem with my LPC1768. I was working on my project and tried to use PLL, but I set to big MSel and my LPC is not responding now. I'm programing through JTAG with H-Jtag but it reads only signature of uC and nothing else. I tried to enter ISP mode but it seems not to go into. I put line 2.10 low and reset but flash magic and lpc21isp don't get respond from it. I'm sure I using good lines and UART0. Can anybody help?
Thanks for your respond, I didn't program code read protect(even don't know how to do it) or maybe accidently I did it... I don't know. I set up the max JTAG TCK in H-JTAG but it didn't connect. It gives me an error something like "Can't stop in DEBUG mode. If you are using USB try to slow down TCK" but I'm using LPT and of course I tryied to slow it down but it didn't work also. Maybe you got some other hints that may work?
I did a quick google search, just for curiousness.
It seems the H-JTAG Can't debug CORTEX-M3 with KEIL.
www.hjtag.com/.../viewthread.php
IMPORTANT NOTES: 1 - To debug CORTEX-M3, please use IAR 5.11 and above; 2 - Can't debug CORTEX-M3 with KEIL, because the RDI interface of KEIL is not updated to supported CORTEX-M3; 3 - For STM32F, please configue TAP according to the following pic, otherwise, can't debug; 4 - To use auto flash download, please disable Use Flash Loader in IAR (shown below)
It's possible I've done it when everything was working. You just have to check in keil "Make hex file" then you going in to H-JTAG Flasher and you send the code to board. After that you have to click debug and reset debuging and uC. It's not working to great and it often make some small troubles but it's working.
No other sugestions?
Sounds like this problem:
http://www.keil.com/forum/docs/thread16503.asp
Nop it's not working for me. I can't read the device signature via Flash Magic via COM. I can read sygnature via JTag in H-JTag