CCS/TMS320F28232: F28232 Execution Time

Vasu,

          You are indeed operating at 150 MHz with a cycle time of 6.67 ns. You cannot expect single-cycle execution with what you are doing. 

1. You have to look at the assembly listing of your C source.
2. Consult SPRU430 to determine how many CPU clock cycles each assembly instruction takes.
3. Flash wait-states and the CPU pipeline may also impact timing.
4. If some ISR is executed in-between, that is going to add to the delay as well.

If you write your code in assembly, with all interrupts disabled and execute it out of 0-wait state RAM, you should see better timings.

It is extremely important that the flash memory is initialized for the correct wait-states. You should consider running timing-critical code from 0-wait-state RAM. Take a look at C:\ti\c2000\C2000Ware_3_03_00_00\device_support\f2823x\examples\flash_f28235

Vasu,

              Please review the workshop at https://training.ti.com/c2000-f2833x-microcontroller-workshop?context=1137791-1137783. TI has invested considerable resources to develop these self-paced workshops and most questions can be answered by reviewing the workshop material. The workshops are an excellent introduction to the basics of C2000 MCUs and the process of writing and running your first example. Good introductory videos about CCS are available at https://www.youtube.com/user/CodeComposerStudio.

C2000ware has examples for both running out of flash and RAM. Please compare your project with the flash example of C2000ware. You should be able to determine why your project is failing.