LPC MicrocontrollersのトピックLPC4078 SSP2

LPC4078 SSP2

albertoferrari — Fri, 20 Jan 2017 10:00:43 GMT

Hi everybody,

I'm using lpc4078 with LPCXpresso v8.1.4 (build 606).

I'm trying to configure SSP2 but when I write the Control Register 1 of SSP2 , LPCXpresso shows a fault.

LPCXpresso also doesn't show the SSP2 registers on the debug monitor.
Please note that with SSP0 and SSP1 everything works fine.

Do you have some hints about this issue?

Thanks in advance.

Alberto Ferrari

Re: LPC4078 SSP2

kerryzhou — Sun, 22 Jan 2017 05:31:10 GMT

Hi Alberto Ferrari,

Did you enable the SSP2 interface power/clock in register PCONP register?

From the user manual, you can get:

So, please check PCONP bit20, did you enable the SSP2 power and clock?

Have a great day,
Kerry

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Re: LPC4078 SSP2

albertoferrari — Fri, 27 Jan 2017 10:44:13 GMT

Hi Kerry Zhou,

thanks for the hint.

The problem seems to be related to a SSP2 CR1 access before that the SPI2 pins were configurated, even if this works for SSP0 and SSP1 ...
Anyway, now the SSP2 works fine.
Thanks again for your help.

Best regards

Alberto Ferrari

Re: LPC4078 SSP2

kerryzhou — Tue, 07 Feb 2017 02:22:05 GMT

Hi Alberto Ferrari,

Thank you for your updated information.

If your problem is solved, please mark the correct answer to close this question.

Have a great day,
Kerry

Re: LPC4078 SSP2

albertoferrari — Wed, 08 Feb 2017 08:57:17 GMT

Hi Kerry Zhou,

I've double checked and it was my fault.

You were right.

I tryed to access to SSP2_CR1->SSE with the SSP not powered (PCONP->PCSSP2=0).

Thanks for your help.

Have a great day.

Alberto Ferrari

Re: LPC4078 SSP2

kerryzhou — Wed, 08 Feb 2017 09:00:33 GMT

Hi Alberto Ferrari,

Thank you for your information update.

Now, very clear result!

If your problem is solved, please help to mark the correct answer to close this question.Thank you!

Have a great day,
Kerry