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pulse read using tm4c123gh6pz

Rashmi yc
Intellectual 830 points
Other Parts Discussed in Thread: TM4C123GH6PZ

Hi..i'm using the tm4c123gh6pz controller to capture the pulse width (2k to 3k HZ).i have configured  the system clock as 49 MHz. i'm using two timer. And  one timer  for to create some delay and if the interrupt will generate i'm going to capture the pulse  And other one as a counter.
my doubt is how much delay i need to create to capture the pulse (2k - 3k)??\

 

 

 

Best Regards

Rashmi yc

  • 0
    TI__Guru**** 244400 points

    Hello Rashmi,

    To capture a periodic pulse, there are two things that you have to consider

    1. The frequency of the signal should be sufficiently low that a high frequency capture clock can see it. In this case it is 2-3KHz so that is fine.

    2. The High Time of the Pulses should be atleast 3 times the System Clock. This data is not mentioned here.

    Regards

    Amit