Hi Members!
I'm implementing FTM input capture in Host S32K144 EVB and Generating PWM signal from Host EVB - My host can able to capture it but I'm having confusion in the FTM_DRV_GetInputCaptureMeasurement(INST_FLEXTIMER_IC_1, 0U) function. it gives out measurementResults[channel] as output. I've attached the screenshot that has varying values. Please let me know what its printing. Screenshot has been attached as well.
As per my understanding its printing edges time stamps. but in milliseconds or microseconds or what it is printing?
From the target EVB i'm generating 100khz PWM with 10% 20% 30% 50% dutycycle with the help of switch.
HOST CODE:
/* Wait a number of cycles for the PWM to reach stability */
delayCycles(0x7FFFFU);
/* Get the latest captured pulse width */
inputCaptureMeas = FTM_DRV_GetInputCaptureMeasurement(INST_FLEXTIMER_IC_1, 0U);
/* Calculate duty cycle */
float dutyCyclePercentage = calculateDutyCycle(inputCaptureMeas, frequency);
/* Print duty cycle */
sprintf(txBuff, "Measured duty cycle: %.6f%%\r\n", dutyCyclePercentage);
print(txBuff);
