[SOLVED] problem in frequency counter hardware

[Mohamed Slama]

Hello All

i have written a code for microC and it work correctly in protues and precise

but when i input frequency directly to T1CK1(i have programmed to input frequency) the micro read a large number of frequency .

so , is there dedicated circuit between Micro and terminal of frequency

 

[jayanth.devarayanadurga]

Search for CLOCK model in Proteus library and see if that works fine. If not, then zip and post your project files.

 

[Mohamed Slama]

the problem in hardware not in simulation or microC

this is the complete project
View attachment F&T_Meter.zip

 

[jayanth.devarayanadurga]

Show you actual hardware interface circuit.

 

[Mohamed Slama]

the same in protues exactly

 

[mvs sarma]

with LCD pin3 grounded, you don't get any display. Connect pin 3 to Ground thro' 1K . At least the display will start showing some thing.

 

[Mohamed Slama]

with LCD pin3 grounded, you don't get any display. Connect pin 3 to Ground thro' 1K . At least the display will start showing some thing.

i have not any problems in code or simulation , it work well , but the problem when i connect hardware and measure any frequency the lcd show large number , as example , when i measure 50 HZ , lcd display 12560 but in simulation the value is precise .

 

[mvs sarma]

please connect a square wave of 5v peak to peak and then try.

If sine wave is used, it needs to be preconditioned to suit the port pin.. If you checjk many frequency counters, the input is not directly given to digital counter. The input signal is conditioned and then applied.
as you are connecting a signal, it needs a signal pre conditioning.

 

[Mohamed Slama]

please connect a square wave of 5v peak to peak and then try.

If sine wave is used, it needs to be preconditioned to suit the port pin.. If you checjk many frequency counters, the input is not directly given to digital counter. The input signal is conditioned and then applied.
as you are connecting a signal, it needs a signal pre conditioning.

still error in reading

- - - Updated - - -

alhamdolellah , i discovered the problem

i forget to multiply by 65536 : number of overflow

 

[mvs sarma]

Congrats and all the best.