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dear
i want to write something like this
go_sub1:
go_sub2:
go_sub3:
go_sub1:
high porta.0
goto main
go_sub2:
high portb.1
goto main
go_sub3:
high portb.2
goto main
my pboblem is program goto first go_sub0: then high portb.0 then program goto go_sub1: then high portb.1 but low portb.0.
please write me example for this i want to do portb.0 stay on high with second step.
thank you
But you are using PORTA in your code.Quote:
go_sub1:
high porta.0
goto main
Post your actual code and we will see what can be done.
dear sir
i have some mistake
iwant to handle portA
go_sub1:
go_sub2:
go_sub3:
go_sub1:
high porta.0
goto main
go_sub2:
high porta.1
goto main
go_sub3:
high porta.2
goto main
When performing bit write operations on PIC16s, this is something you have to watch out for.
Quote:
Reading the PORTx register reads the status of the pins, whereas writing to it will write to the PORT latch. All write operations are read-modify-write operations. Therefore, a write to a port implies that the port pins are read, this value is modified and then written to the PORT data latch.
Many chips have analog funtions on PORTA, did you turn the ADC off?
http://www.picbasic.co.uk/forum/showthread.php?t=561
use 16f877a
Adc off
can u help me.with example
thank you
Did you get the main program structure working?
If it still acts funny, it's probably because the GOTO MAIN in the subroutines always goes back to the top of the program. Only SUB1 will get executed.
What about something like this?
I would recommend starting with Port B for your testing. You can use Port A later once you have a simple program working.Code:GOTO MAIN ' Skip over subroutines
Sub1:
high portB.0
RETURN
Sub2:
high portB.1
RETURN
Sub3:
high portB.2
RETURN
MAIN:
GOSUB Sub1
GOSUB Sub2
GOSUB Sub3
END
Robert
:)