using counter using basic

[islambadr]

How to use counter in pic16f628 using picbasic pro?

[mister_e]

Wich counter? The PIC TIMER0,1,2?

    '
    '    PIC Configuration
    '    =================

	@ __CONFIG  _HS_OSC & _MCLRE_ON  &  _LVP_OFF & _WDT_OFF & _PWRTE_ON  & _BODEN_ON  
    DEFINE OSC 20    
    '
    '    Hardware configuration
    '    ======================
    TRISB=%11111111            ' PORTB<7:0> => all set to input
    T1CON = %00000110          ' TIMER1 counter :
                               '        Prescaller 1:1
                               '        Oscillator shut off
                               '        no synchronisation
                               '        use PORTB.6 as clock input

    '   
    '    Variables/Alias definition 
    '    ==========================
    TMR1ON      VAR T1CON.0
    CounterA    VAR WORD

Start: 
    TMR1L=0                  ' Clear 
    TMR1H=0                  '       Counter
                             ' 
    TMR1ON=1                 ' Start counter
    PAUSE 1000               ' Sampling time               
    TMR1ON=0                 ' Stop counter
                             '
    CounterA.HIGHBYTE=TMR1H  ' Get results                          
    CounterA.LOWBYTE=TMR1L   ' 
    '
    '  Blah blah blah
    '
    goto start

[sayzer]

Hi Steve,

I have succesfully set up Timer0 and Timer1 as counters individually working in the background (F877).

As I need one more counter, and went through the Data Sheet, how do I set Timer2 as a counter?

Data sheet says in "Microcontroller Core Features" that "Timer2: 8-bit timer/counter with 8-bit period register, prescaler and postscaler".

However, there is no mention of counter in "7.0 TIMER2 MODULE" section in the data sheet.

Am I missing a key point here, and thus Timer2 can not be used as a counter from an external source?


Thanks in advance.

---------

[mister_e]

From what i remind, Timer2 is unfortunately just a timer and have something to do with the HPWM and CCP2 module.. not a counter. But timer0, timer1 can be used as counter.

In your case you could also use any interrupt source and increment a variable in the ISR.