MSP430F67791A: What is my main clk speed ? Is UCS driver library wrong?

Sila Ozer

Part Number: MSP430F67791A

Hi All,

Ive set the fll speed to 17203200 through UCS_initFLL function, with XT1 as reference. When i use the GetMCLKSpeed function, i get 17Mhz. However, when i output it, with MCLK pin output, the oscilloscope measures 2MHz. Whats happening ? is my oscilloscope wrong? Yelp!

over 1 year ago

0 Sal Ye over 1 year ago

TI__Mastermind 26535 points

Hi Sila,

I am not sure what library you are using. But you can refer to below reference project:

https://dev.ti.com/tirex/explore/node?node=A__ALlo-ITUgXsmRZliCmKsng__msp430ware__IOGqZri__LATEST&placeholder=true

B.R.

Sal

0 Sila Ozer over 1 year ago in reply to Sal Ye

Prodigy 10 points

im using a bit of the driver library, for GetMCLKSpeed, but used register for outputting the main clock through registers

0 Sal Ye over 1 year ago in reply to Sila Ozer

TI__Mastermind 26535 points

Hi Sila,

I suggest you try the register operation for test, it should work with your expected.

And then you can compare with the UCS library, whether its configuration has any issue. The low level code always is the similiar.

B.R.

Sal

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

MSP430F67791A: What is my main clk speed ? Is UCS driver library wrong?