serial 4 x 20 lcd

[carmusic]

Hi i was reading about lcd serial on circuit section of website.
https://www.electro-tech-online.com/content/358-simple-serial-lcd.html

could someone help ma adapt the code to use with a 4 x 20 lcd at 9600bps.
Thanx

 

[AtomSoft]

Im not sure who wrote that. Its a good example but using Oshonsoft Basic was a bad idea since most dont use it. (in my opinion) Most people use C or ASM for 16F Pics. I know nothing about that compiler so i cant help much but you can try this:

Proc send_lcd_char()
    Select Case char
        Case 0
            'do nothing
        Case 1
            Lcdcmdout LcdHome
            Lcdcmdout LcdClear
        Case 2
            Lcdcmdout LcdLine2Home
            Lcdcmdout LcdLine2Clear    
        Case 3
            Lcdcmdout LcdLine3Home
            Lcdcmdout LcdLine3Clear    
        Case 4
            Lcdcmdout LcdLine4Home
            Lcdcmdout LcdLine4Clear       
        Case Else
            Lcdout char
    EndSelect
End Proc

Thats what i would have written since it would allow you to simply send a Line Number then the ASCII...

 

[be80be]

atom the case 13 the 13 is a serial command for carriage return 27 is new line that's why he did it that way

only bad thing is not all serial software works the same sending data from the pc to the pic

 

[AtomSoft]

Ok but with proper coding my way should work also

 

[be80be]

It would if you define 0 as X command, 1 as XX command and so on

But the thing I have run into is that not all serial programs send commands the same like If you send line feed it should be

^j but some send #LF and some #10 and some maybe ^10

It's crazy no real standard


Line feed should test as 0x5E4A Or if byte 0x5E and next byte 0x4A then we have a line feed

Or 0b1011110 01001010