TMS320F28379D: PWM frequency in launch pad is different from control card frequency for the same code

I just checked the crystal frequency again. Launchpad crystal frequency is half that of the Control card Frequency.

Manikanta,

Note that when using the C2000Ware code examples, there is a conditional build option in the F2837xD_SysCtrl.c file for the difference in clock frequency between the controlCARD and LaunchPAD:

#ifdef _LAUNCHXL_F28379D
    InitSysPll(XTAL_OSC,IMULT_40,FMULT_0,PLLCLK_BY_2);
#else
    InitSysPll(XTAL_OSC, IMULT_20, FMULT_0, PLLCLK_BY_2);
#endif // _LAUNCHXL_F28379D

This conditional build can be set in CCS as a project build option. Under "C2000 Compiler" select "Advanced Options" and then "Predefined Symbols". In the predefined name box ("Pre-define NAME") click the Add icon (first icon with green plus sign). Then in the "Enter Value" window type _LAUNCHXL_F28379D (note leading underscore).

Also, you might find the F2837xD workshops (two versions available) useful, too:

https://training.ti.com/c2000-f2837xd-microcontroller-workshop?context=1137791-1137781

- Ken

Dear Ken,

Thanks a lot for your response.

Regards

Manikanta P