ON 20060802@12:09:56 PM at page: http://www.piclist.com/microchip/portpins.htm#38930.6598032407 James Newton[JMN-EFP-786] removed post 38930.6598032407 |Delete 'techi@indigo.ie asks:
Hi Guys,
I have never programmed source for pics but willing to learn, I have 12c508's I want to have 4 inputs and 1 output.
inputs to be 1,2,3,4 or a,b,c,d in momentary switches. Then the output would need to indicate which switch with an id number (Can be anything). So all that said anybody any ideas on where i can start.
|Delete 'P-' before: '' but after: ' I'm in a super-tight timescale interrupt situation; I'm generating Timer0 interrupts every 20 µSecs. I need to minimize the save and restore code. If I know I'm working in BANK0, can I skip all the PCLATH or even the BANK0 select code?
Would you please send me the English version of this code? I'm a beginner with PIC micros and it'll be easier for me to understand in English. Please email to chrisalick@gmail.com
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Hi|Delete 'P-' before: '' but after: ' ' ON 20060830@8:25:04 PM at page: http://www.piclist.com/microchip/time.htm#38959.3483101852 James Newton[JMN-EFP-786] published post 38959.3483101852 basmangeorge@gmail.com asks:
I have problem in comparing 8 bit operands when the first operand is negative (in 2's complement). I have the doubt that the carry is to be complemented when the sign of the 2 operands are opposite. In the example below the latter 2 cases fail.
clrc
clrz
movlw 1
sublw 2 ;Carry=1
nop
clrc
clrz
movlw 2
sublw 2 ;Carry=1
nop
clrc
clrz
movlw 3
sublw 2 ;Carry=0
nop
clrc
clrz
movlw 4
sublw 2 ;Carry=0
nop
clrc
clrz
movlw -3
sublw -2 ;Carry=1
nop
clrc
clrz
movlw -2
sublw -2 ;Carry=1
nop
clrc
clrz
movlw -1
sublw -2 ;Carry=0
nop
clrc
clrz
movlw 0
sublw -2 ;Carry=1
nop
clrc
clrz
movlw 1
sublw -2 ;Carry=1
nop
I have a problem with using CCP pins for measuring time difference between two pulls signals where by timer1 will bee running free and CCP1capture is red throw CCPR1H-CCPR1L and CCP2 throw CCPR2H-CCPR2L complementing CCPR1H-CCPR1L and adding it to CCPR2H-CCPR2L after converting to ASCII and display on LCD the time measurement constantly flatcars with what looks like a random number and back to accurate measurement|Delete 'P-' before: '' but after: '
Welcome any suggestions
Thanks Boz