Other Parts Discussed in Thread: C2000WARE
Hi,
How can I configure the CM clock in SYS/BIOS.
I can't find the option. This is not shown with XGCONF browser.
I want to set the CMCLK frequency in SYS/BIOS.
Best regards
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Hi,
How can I configure the CM clock in SYS/BIOS.
I can't find the option. This is not shown with XGCONF browser.
I want to set the CMCLK frequency in SYS/BIOS.
Best regards
The CMCLK gets configured by the C28x. Those settings are found in the Boot module.
If you aren't using SYS/BIOS on the C28x, you'll just need to use the related driverlib function--SysCtl_setCMClk().
Whitney
Hi,
I have additional questions.
I want to set the AUX PLL to make 125MHz CM clock using AUXOSCCLK.
But Boot module in the SYS/BIOS doesn't include options for AUX PLL.
How can I set the AUXCLK source, divider in SYS/BIOS?
Where do I find the SYS/BIOS examples and guide documents with C2000?
Best Regards,
You'll need to configure the AUX PLL in your application code--SYS/BIOS doesn't have an option to configure that one. Look at the C2000Ware examples on how they configure the AUX PLL. In particular, look at the SysCtl_setAuxClock() function from driverlib. It gets called in the driverlib examples by the Device_init() function.
You can find examples in CCS by going to File -> New -> CCS Project, entering your part number, and looking at the SYS/BIOS items under the "Project templates and examples" box. Clicking the "More Examples..." -> "Search using Import Wizard" link will give you a complete list.
For documentation, in CCS you can go to Help -> Help Contents and look under the SYS/BIOS section. There's also this FAQ with some nice C28x-specific info:

Whitney