PIC18F4620 Troubles

[mister_e]

FYI, this DEFINE is the default one, if you don't write it yourself, PBP will do it for you in background.

Let's see what happen in the .LST file, i compile those lines...

Define LCD_DREG PORTD ' Define LCD connections
Define LCD_DBIT 4
Define LCD_RSREG PORTE
Define LCD_RSBIT 0
Define LCD_EREG PORTE
Define LCD_EBIT 1

LCDOUT "Hello"

Now, i open the .LST file, scroll to the end... and

LCD_BITS                          00000004
LCD_COMMANDUS                     000007D0
LCD_DATAUS                        00000032
LCD_DBIT                          4
LCD_DREG                          PORTD
LCD_EBIT                          1
LCD_EREG                          PORTE
LCD_LINES                         00000002
LCD_RSBIT                         0
LCD_RSREG                         PORTE
LCD_RWBIT                         00000000
LCD_RWREG                         00000009

everything is there. Now what happen, if i don't use any DEFINE

lcdout "Hello"

.LST

LCD_BITS                          00000004
LCD_COMMANDUS                     000007D0
LCD_DATAUS                        00000032
LCD_DBIT                          00000000
LCD_DREG                          00000005 
LCD_EBIT                          00000003
LCD_EREG                          00000006
LCD_LINES                         00000002
LCD_RSBIT                         00000004
LCD_RSREG                         00000005
LCD_RWBIT                         00000004
LCD_RWREG                         00000005

Interesting eh! But i agree, it's always nice to have ALL DEFINE in your code, so if one day you decide to change them, it's just easy. PICMultiCalc also generate those.. kinda lazy stuff... and some day i am

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Finally: Please tell me why this should work. In trying to read all the fun stuff down in the chip technical papers I must be missing something and I definitely want to be more astute as to why as well as how.

Well, why ADCON1 would have to work? Where did you get this value ?

Let's see a datasheet snip...
<IMG SRC="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=1634&stc=1&d=117924073 8">

ADCON1=7 set PCFG3:PCFG0 to 0111.. right? If so, what happen to AN0,1,2,3,4,5,6,7 ?

ADCON1=$0F set PCFG3:PCFG0 to 1111.. right? If so, what happen to AN0,1,2,3,4,5,6,7,8,9,10,11,12 ?

I think it's the explanation :-)

EDIT: Sorry PicUser.. we write at the same time !

[CluckShot]

You confirmed my research and it is always nice to have someone back up your thinking. It either means that the both of you are lost ... (not in this case) or that you actually understand what the other person is saying. (something nice)

In any case thanks so much and I am sure I will be back and hopefully I will have nice helpful things for others as well.

Paul