Other NXP ProductsのトピックLPC824M201 - cannot connect

LPC824M201 - cannot connect

tayfun_eren — Tue, 09 Jul 2019 12:09:25 GMT

Hello,

We have just started our prototype with LPC824M201 MCU. Voltages seem to be fine, however computer doesnt seem to connect to MCU. We have searched through other discussions in here, however we could not spot the failure. Would you be able help us to understand where the problem might come from?

Our log file is:

Executing flash operation 'Program' (Program executable into flash mbed_blinky.bin) - Mon Jul 08 22:32:50 CEST 2019

Checking MCU info...

Scanning for targets...

Executing flash action...

SEGGER J-Link Commander V6.42b (Compiled Feb 5 2019 17:33:07)

DLL version V6.42b, compiled Feb 5 2019 17:31:40

J-Link Command File read successfully.

Processing script file...

J-Link Commander will now exit on Error

J-Link connection not established yet but required for command.

Connecting to J-Link via USB...O.K.

Firmware: J-Link LPC-Link 2 compiled Sep 23 2016 12:15:22

Hardware version: V1.00

S/N: 611000000

VTref=3.300V

Target connection not established yet but required for command.

Device "LPC824M201" selected.

Connecting to target via SWD

Cannot connect to target.

Script processing completed.

Unable to perform operation!

Command failed with exit code 1

Thanks,

Tayfun

Re: LPC824M201 - cannot connect

FelipeGarcia — Thu, 11 Jul 2019 15:51:49 GMT

Hi Tayfun,

In order to have more information of your issue, could you please tell me what commands are you executing in the J-link commander?

Also, are you using an external debugger or which debugger interface are you working with?

Best regards,

Felipe

Re: LPC824M201 - cannot connect

tayfun_eren — Wed, 17 Jul 2019 21:26:13 GMT

Hi Felipe,

Thanks for the reply! We have found the root cause, as it was a grounding issue.

We could detect it by connecting to an oscilloscope.

It is working now!

Thanks anyways,

Tayfun

Re: LPC824M201 - cannot connect

FelipeGarcia — Wed, 17 Jul 2019 22:07:23 GMT

Hi Tayfun,

I am glad to know you have solved your issue. Congrats.

Best regards,

Felipe