TMS320F280039-Q1: SFRA function source code

Jordan,

SFRA_F32_runBackgroundTask need to be called at a slow task. Whereas SFRA_F32_inject and collect function need to be called at control loop frequency.

Summary of background Task function as follows:

Based on SFRA_F32_obj->state different cases exist

• Case 0: Ideal state to initial state (check for sfra1.start =1 then update status, state as 1 and start, freqindex as 0)
• Case 1: SFRA sweep state (for every freqindex it will be done)
• Case 2: pre collection phase ( if state!=2 then update state as 3) //Here the magnitude and phase vectors of closed loop and open loop at different frequency points are to be collected
• Case 3: collection phase ( if state!=1 then update state as 4)
• Case 4: Calculation and update response values
• Case 5: dead time between frequency injections for system to return to nominal point

sfra.lib has source files in the coded format with functions such as sfra_f32_inject/collect/runbackgroundtask.
Our compiler is intelligent enough to decode these functions and as a user just need to add these lib, it's path to project properties.

You can find more info on : C2000 Software Frequency Response Analyzer (SFRA) Library User’s Guide (Rev. A)

Let me know, if you need further details.

Thanks & Regards,

Shashank