TMS320F28379D: SFRA library functions

Ratul Das

Part Number: TMS320F28379D
Other Parts Discussed in Thread: SFRA, TIDM-DC-DC-BUCK, C2000WARE-DIGITALPOWER-SDK

Hello,

Where are the SFRA functions' definitions located, for example, the SFRA_F32_inject function?

All these functions are just called in sfra_f32.h file with extern. When I build my main.c file using these functions, there are no errors, however, there are no effects on the duty cycles I am trying to modulate.

I have followed the SFRA library user's guide for writing and editing my main.c file and editing the project properties.

over 3 years ago

0 Ozino Odharo over 3 years ago

TI__Mastermind 21406 points

Ratul,

Please note that the functions are referenced in the library object and the source is not shared. Can you provide more details as to what you're attempting to do with the library? If you're interested in Cycle and memory usage, please see Chapter 3 in the User's Guide at https://www.ti.com/lit/ug/spruhz5a

Regards,

Ozino

0 Ratul Das over 3 years ago in reply to Ozino Odharo

Prodigy 40 points

Hello Ozino,

Should I follow the doc you suggested or the following one?

https://www.tij.co.jp/jp/lit/ug/spruik4a/spruik4a.pdf?ts=1662452831918&ref_url=https%253A%252F%252Fwww.google.com%252F

The following one is newer.

About my project:

I have pre-existing code which successfully controlled a Buck-like converter. I have an ISR running at 300kHz for sensing and controlling the output voltage.

I want to inject frequencies through the PWM signals and measure the open loop response.

0 Ozino Odharo over 3 years ago in reply to Ratul Das

TI__Mastermind 21406 points

Ratul,

Yes, you can leverage the newer document for specifics on the SFRA. I will recommend taking a look at the TIDM-DC-DC-BUCK solution provided in the C2000Ware-DigitalPower-SDK. You should find code that does the SFRA injection. You should be able to do something similar for your application.

Regards,

Ozino

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TMS320F28379D: SFRA library functions