LPC MicrocontrollersのトピックRe: Unable to RESET LPC2387 processors

Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:08 GMT

Content originally posted in LPCWare by barny on Wed Dec 04 01:43:01 MST 2013
Can anyone help me.
We have been produces 5 different products and they all used the LPC2368 for years. We have had NO problems with them.
We then decided to upgrade our processor to the LPC2387. The LPC2368 and LPC2387 are pin compatiable. We then started experiencing problems with loading HEX files to the LPC2387 using FlashMagic. We could load the once but afterwards could not load again. After further investigation it appears that the processor isn’t seeing a reset input.
So we set up a test and had a 47k pull resistor to the reset input (pulled up to 3v3) and a switch to ground (0v). We found that LPC2387 processors which were revision B didn’t experience this problem, but Revision D processors would just not see the reset input.
Is anyone aware of any reset issues with certain processors?
Thanks

Re: Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:09 GMT

Content originally posted in LPCWare by TheFallGuy on Wed Dec 04 02:24:51 MST 2013
I don't know if this will help:
http://www.lpcware.com/content/blog/lpc2300-and-lpc2400-rev-b-rev-d-change-ethernet-and-code-execution

Re: Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:10 GMT

Content originally posted in LPCWare by barny on Wed Dec 04 04:46:34 MST 2013
Thanks for that, but unfortunately it does really give me any help.

Re: Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:10 GMT

Content originally posted in LPCWare by barny on Wed Dec 04 04:46:42 MST 2013
Thanks for that, but unfortunately it does really give me any help.

Re: Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:11 GMT

Content originally posted in LPCWare by schneekette on Mon Dec 30 08:27:00 MST 2013
I can't help yet, but I can tell you that I am experiencing the same behaviour with LPC2368 and LPC2364 and that's why I had just posted here.

I'm also seeing that the LPC2364/68 is just ignoring my reset signal on multiple designs and boards.

To allow for reprogramming with flash magic I'm currently cycling power with ISP Enable On, I don't have a different way of doing this, as the reset is ignored.

Hope someone has already a solution for this.

Stephan

Re: Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:11 GMT

Content originally posted in LPCWare by barny on Thu Jan 02 02:06:11 MST 2014
Hi Stephan,

Thanks for that.
We are still trying to find a solution to this problem ourselves.
If we have some new information i will post it here.

Thanks
Andrew

Re: Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:12 GMT

Content originally posted in LPCWare by vman on Wed Feb 19 12:24:16 MST 2014
Hi...

I AM USING LPC 2387 ...
but my lpc2387 always remain in boot mode...i can read signature , program mcu but ..lpc 2387 cant come out of boot mode ..and run...
I have checked voltage on P2.10/EINT0 ...its 3.3 volt

Please help..

Re: Unable to RESET LPC2387 processors

lpcware — Wed, 15 Jun 2016 19:51:13 GMT

Content originally posted in LPCWare by barny on Thu Feb 20 01:45:29 MST 2014
Hi....

In the 'configure target option' do you have the IROM1 start address at 0x0 and also the startup radio button is checked.
Maybe your program isn't starting at the start address.

Cheers