basics programming

[mister_e]

Bonjour et bienvenue Olivier,

Yes there is many different way. If you have multiple choice on multiple var it's a little bit more coding on your side. BUT if you have multiple conditions to test on a single var, and then jump to a specific routine, you have at least 3 choices

1. few IF THEN

        Choix VAR BYTE
        
Start:
        '
        '       some code here
        '
        IF Choix=1 then gosub Routine1
        IF Choix=2 then gosub Routine2
        IF Choix=3 then gosub Routine3
        goto start
        
Routine1:
        '
        '   plah plah plah
        '
        return

Routine2:
        '
        '   plah plah plah
        '
        return

Routine3:
        '
        '   plah plah plah
        '
        return

SELECT CASE

        Choix VAR BYTE
        
Start:
        '
        '       some code here
        '
        SELECT CASE CHOIX
            CASE 1 
                gosub Routine1
                '
            CASE 2
                gosub Routine2
                '
            CASE 3
                gosub Routine3
                '
            END SELECT
            
        goto start
        
Routine1:
        '
        '   plah plah plah
        '
        return

Routine2:
        '
        '   plah plah plah
        '
        return

Routine3:
        '
        '   plah plah plah
        '
        return

BRANCHL
but this one AS-IS, use GOTO, so, as Henrik said, you can't use RETURN without tricks

        Choix VAR BYTE
        
Start:
        '
        '       some code here
        '
        '       choix=   0      1         2         3
        '                '      '         '         '
        branchl choix,[Start,Routine1, Routine2, Routine3]
        goto start
        
Routine1:
        '
        '   plah plah plah
        '
        goto start

Routine2:
        '
        '   plah plah plah
        '
        goto start

Routine3:
        '
        '   plah plah plah
        '
        goto start

[olivierb38]

Now i think, i have understood architecture of my program,

Now i will try to create a sinus wave with variable duty cycle with a PIC18F458



Thanks



Olivier