LPC MicrocontrollersのトピックLPC1769 Main oscillator doesn't ready or stable

LPC1769 Main oscillator doesn't ready or stable

marianovedovato — Sun, 20 Nov 2016 12:29:31 GMT

Hi everyone!
I'm reviewing a sitck (of embedded artist) that has troubles with the main oscillator.

I can see in debug mode that always any program will be stuck in the follow part of the initialization:

#define SCS_Value 0x00000020

SCS = SCS_Value;

if (SCS_Value & (1 << 5)) /* If Main Oscillator is enabled */
while ((SCS & (1<<6)) == 0);/* Wait for Oscillator to be ready */ ---> STUCK

I have probed to change the crystal (12MHz) connected to the 22 and 23 pins but I still haven't luck.

The owner of the stick told me that him only it used with one test program, he don't remember to did any strange configuration.

Is there possible to recover the MCU to a kind special way of factory configuration? Or maybe the only solution is to change the MCU for other new part?

Thanks in advance!

Mariano

Re: LPC1769 Main oscillator doesn't ready or stable

kerryzhou — Wed, 23 Nov 2016 05:05:40 GMT

Hi Mariano,

This is the repeated post, you already post another question which is the same as this post.

I already answer you in your another post:

LPC1769 Main oscillator doesn't ready or stable

If you have any question, please reply me in the above link.

Have a great day,
Kerry

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Re: LPC1769 Main oscillator doesn't ready or stable

marianovedovato — Thu, 24 Nov 2016 12:24:05 GMT

Hi Kerry, yes, my mistake.

I opened keeping in mind was a question, but when I realized... was too late.

Thank you so much!

Mariano