LP-MSPM0G3507: how to change main clock settings?

Vincenzo Pizzolante

Mastermind 25746 points

Part Number: LP-MSPM0G3507
Other Parts Discussed in Thread: SYSCONFIG

from default value to for example 48MHz or 32MHz or 24MHz (benchmark evaluation)

thx

Vincenzo

over 1 year ago

0 Brandon Fisher94 over 1 year ago

TI__Mastermind 28075 points

Hi Vincenzo,

Are you using SysConfig? The 32MHz clock is just the base SYSOSC frequency. That should be the default in most examples.

For 48MHz and 24MHz you should use the SYSPLL. This is very easy to configure in clock tree. To do that you first you need to ensure that clock tree is enabled within the sysconfig SYSCTL module.

Then within clock tree you can set the PDIV and QDIV and other divider values such that MCLK is the frequency you want.

Best Regards,
Brandon Fisher

0 Vincenzo Pizzolante over 1 year ago in reply to Brandon Fisher94

TI__Mastermind 25746 points

hi Brandon,

thanks a lot.

The idea for the long run is to have an header where to change some variables and set "on the fly" the main clock frequency.

I wasn't able to find anything like that. May you help me out w/ that?

thx again

Vincenoz

0 Keith Barkley over 1 year ago

Guru 42145 points

Check out the SYSCTL Driver lib functions. Here is just a small sample:

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LP-MSPM0G3507: how to change main clock settings?