LPC MicrocontrollersのトピックDebug Customer's System with Link2 Not Providing Enough Power

Debug Customer's System with Link2 Not Providing Enough Power

leechen — Tue, 08 May 2018 11:28:45 GMT

I have this question that if my customer's system require large power to operate, which is much bigger than the electric current Link2 can provide. How should I debug my customer's system with Link2?

Re: Debug Customer's System with Link2 Not Providing Enough Power

leechen — Wed, 09 May 2018 01:48:10 GMT

Re: Debug Customer's System with Link2 Not Providing Enough Power

lpcxpresso_supp — Wed, 09 May 2018 02:01:39 GMT

If the customer is using a different supply, there's no reason for the LPC-Link2 to supply power. So, leave it unconnected.

Thanks and regards,

MCUXpresso Support

Re: Debug Customer's System with Link2 Not Providing Enough Power

jeremyzhou — Wed, 09 May 2018 02:06:28 GMT

Hi Lee Chen,

Thank you for your interest in NXP Semiconductor products and

the opportunity to serve you.

The custom board is able to be supplied by an alternative power source when JP2 is open in the LPC-link2.

Have a great day,
TIC

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Re: Debug Customer's System with Link2 Not Providing Enough Power

leechen — Wed, 09 May 2018 02:58:53 GMT

I am having a problem that when it's 2.9V on customer's board, I can use Link2 to go into debug mode. However, after customer raised the voltage to 3.4V, I cannot go into debug mode. I don't understand why this is happening. Is there any way I can use oscilloscope to see what's causing the problem?

Re: Debug Customer's System with Link2 Not Providing Enough Power

leechen — Wed, 09 May 2018 03:19:11 GMT

Thank for reply Jeremy. Do you mean when customer's board has power supply itself, I need to leave JP2 open, with Link2 connected to customer's board with only SWCLK, SWDIO, and GND?

Re: Debug Customer's System with Link2 Not Providing Enough Power

leechen — Wed, 09 May 2018 03:46:55 GMT

Re: Debug Customer's System with Link2 Not Providing Enough Power

jeremyzhou — Thu, 10 May 2018 03:14:46 GMT

Hi Lee Chen

Yes, it's.

Have a great day,
TIC
 
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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Re: Debug Customer's System with Link2 Not Providing Enough Power

leechen — Thu, 10 May 2018 03:21:24 GMT

but I get this error when I have JP2 open. Picture as shown below.

Re: Debug Customer's System with Link2 Not Providing Enough Power

jeremyzhou — Thu, 10 May 2018 08:56:58 GMT

Hi Lee Chen,

Thanks for your reply.

You should remove jumper of JP1 if you want to debug the target board with LPC-link2.
Have a great day,
TIC

Re: Debug Customer's System with Link2 Not Providing Enough Power

leechen — Thu, 10 May 2018 14:41:39 GMT

Yes I did have both JP1 and JP2 removed as shown on the picture above.

Re: Debug Customer's System with Link2 Not Providing Enough Power

jeremyzhou — Fri, 11 May 2018 03:08:10 GMT

Hi Lee Chen,

Sorry, I made a typo error.

It should be "You shouldn't remove jumper of JP1 if you want to debug the target board with LPC-link2."

Have a great day,
TIC