LPCXpresso IDEのトピックRe: Unable to connect to core

Unable to connect to core

prachipanse — Mon, 10 Apr 2017 02:47:26 GMT

Hi,

I am using LPC-Link2 debugger with LPCXpresso v8.2.2 and have started seeing the following error while debugging:

Nc: connecting to core 0 with handle 0x1 (using server PID -1) gave rc 'Ee(36). Could not connect to core.'
Nc: connecting to core 0 with handle 0x1 (using server PID -1) gave rc 'Ee(36). Could not connect to core.'
Nc: connecting to core 0 with handle 0x1 (using server PID -1) gave rc 'Ee(36). Could not connect to core.'
Nc: probe unbooted? no core 0?

Please let me know what could be the problem.

Regards,

Prachi

Re: Unable to connect to core

thefallguy — Mon, 10 Apr 2017 16:08:47 GMT

You have probably got your chip into a strange state. This FAQ describes how to regain access:

https://community.nxp.com/thread/389112

Re: Unable to connect to core

lpcxpresso_supp — Mon, 10 Apr 2017 18:21:56 GMT

In addition to the FAQ recommended by the Fall Guy, check to see if a rogue redlinkserv process exists. It can prevent access to the target. Once you see the reported error, check the process list. If you see a redlinkserv process but have no other debug connections active, kill the process and retry.

Thanks and regards,

LPCXpresso Support

Re: Unable to connect to core

prachipanse — Fri, 28 Apr 2017 11:13:44 GMT

Hi,

Thanks. Using the Vector catch and the Reset handling options and by killling the redlinkserv process, I am able to connect back to the target sometimes. However, it is inconsistent and sometimes does not recover when these options are tried.

What can be tried further?

Regards,

Prachi

Re: Unable to connect to core

lpcxpresso_supp — Tue, 02 May 2017 08:59:13 GMT

Is your application actually doing anything in your system setup that could be putting your MCU into a "strange state" - as described at the top of the https://community.nxp.com/thread/389112 FAQ ?

What MCU and board are you using? I would certain suggest checking your debug and reset connections :

Design Considerations for Debug

Can you post debug logs for both working and non-working connections?

The Debug Log

Regards,

LPCXpresso Support

Re: Unable to connect to core

prachipanse — Thu, 18 May 2017 04:06:28 GMT

Hi,

Thanks for your help. The issue doesn't seem to occur much when the Enable Code Read Protection and the Link Application to RAM options are disabled.

Thanks.