Changing GPIO output STATE on ADC SOC (PICCOLO)

Olaf,

Can you clarify what you mean by "IT" in the first sentence?

Also, are you wanting to measure the SOC -> EOC conversion process, or the latency from SOC event to actual launch of ADC sampling?  Can you also tell us which Piccolo part you are using?

-Tommy

At least with F28027 the first ADC measurement is ready in 520ns (when AdcRegs.ADCCTL1.bit.INTPULSEPOS = 0;    // Early interupt and AdcRegs.ADCSOC0CTL.bit.ACQPS = 6;       // Sample window is 7 cycles long (6 + 1 clock cycles).). Time per extra subsequent sample is 220ns. Means the conversion time is 520ns + (n-1) * 220ns, where n is the count of adc measurements. The time is measured from SOC to when ISR is executed.

JHi

Olaf,

For the sake of just measuring the time, you can also consider triggering the SOC with an external GPIO interrupt (XINT).

-Tommy