[PIC] 3 input free frequency I need to do measure

[saifbd3344]

:|I want to measure three input frequency of the PIC microcontroller. That I want to say I have 3 input signal that have various input frequency. I need to measure them. Can I do it using one microcontroller?

 

[barry]

Short answer: Yes.

Long answer: You don't give us any information. Like frequency. Or amplitude. Or waveform.

 

[saifbd3344]

I have 3 input frequency like 10hrz, 15hrz and 12hrz. I want to showing up on a display the average frequency of 3 input signal. Do you understood?

 

[D.A.(Tony)Stewart]

Using 3 counters over a fixed time interval, low frequencies can be added then /3 to get average.

 

[horace1]

I have 3 input frequency like 10hrz, 15hrz and 12hrz. I want to showing up on a display the average frequency of 3 input signal. Do you understood?

usie a dsPIC to acquire blocks of data using 3 ADCs and do an FFT on them

for example the plot below shows a the results of a dsPIC acquiring blocks of 1000samples/second, doing an FFT and sending the results (frequency and phase) to a PC for plotting

 

[saifbd3344]

i am using PIC16F690. I want to generate variable frequency PWM in background.
eg.
30khz for 10msec
45khz for 10msec
65 khz for 10msec
in while loop and in background. we can use other timer also so plz give me the suggestion to make it feasible...