TMR1 of PIC16F877

W

wowowee

New Member

• Apr 24, 2007

• #1

How do you read the data in the TMR1H and TMR1L? Do you have a sample code?

 

P

Pommie

Well-Known Member

Most Helpful Member

• Apr 24, 2007

• #2

You simply read them.

Code:

       movfw   TMR1L

Maybe if you described what you are trying to do we could give a little more help.

Mike.

 

csaba911

Member

• Apr 24, 2007

• #3

The Timer1 module is a 16-bit timer/counter consisting
of two 8-bit registers (TMR1H and TMR1L), which are
readable and writable. The TMR1 Register pair
(TMR1H:TMR1L) increments from 0000h to FFFFh
and rolls over to 0000h. Timer1 L&H is in BANK0

Very easy to read:

Code:

BANKSEL      TNR1L[INDENT]MOVF    TMR1L,W
MOVWF   TEMP_REG_L
MOVF    TMR1H,W
MOVWF   TEMP_REG_H
[/INDENT]

Have fun....

 

eblc1388

Active Member

• Apr 25, 2007

• #4

Hi csaba911,

Assuming the timer1 is running. If after executing the above code, TEMP_REG_L=0xFF and TEMP_REG_H=0x12, which of the following values do you like for the real timer value?

a. TIMER1 = 0x11FF
b. TIMER1 = 0x12FF
c. TIMER1 = 0x1200

 

gramo

New Member

• Apr 25, 2007

• #5

I've made examples with Proton PIC Basic code for **broken link removed**maybe they will help you out? They all show how to create accurate time intervals