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Timer2 in Capture Mode

Raff

I tried to use Timer2 in Capture Mode, I have to measure frequency from 8 to 10 KHz. I used the following code but no way to work.
To set Timer2
T2CON=9;
T2MOD=0;
TL2=0;
TH2=0;
RCAP2L=0;
RCAP2H=0;
TR2=1;

in the main loop

while(!EXF2);

now i suppose to fine value in RCAP2L e RCAP2H but nothing.
Frequency to measure arrives to P1.1 (T2EX).
Is it correct?
Thank you very much

Raffaele

  • 0

    Hi,Raff
    I have just finished my frequency counter which can measure 20Hz~30MHz with timer2 working in capture mode,it works well.I just finished the first version:

    	T2CON = 0x0d;
      TH2   = 0;
      TL2   = 0;
      EXF2  = 0;
      TF2   = 0;
      EA    = 1;
      TR2   = 1;
    Maybe you forgot to set EA!
    Good luck!