CCS/LAUNCHXL-F28379D: LAUNCHXL-F28379D DAC Module writing digital value to DAC output is very slow.

Amr Mohamed

Tool/software: Code Composer Studio

I wrote a device driver for DAC module of LAUNCHXL-F28379D; when I measured number of CPU clock cycles of the write instruction that output digital value to DAC "DacaRegs.DACVALS.all= 1024" it takes about 252 CPU with CPU clock cycle 5 nano second.

over 5 years ago

0 Frank Ankapong over 5 years ago

TI__Mastermind 28275 points

Hi Amr,

That shouldn't take 252 cycles, 2 cycles at the most. How did you come to the conclusion it took 252 cycles. Did you check the disassembly? You can also use the clock profiler in CCS to figure out how many cycles the code took.

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CCS/LAUNCHXL-F28379D: LAUNCHXL-F28379D DAC Module writing digital value to DAC output is very slow.