LCD -- melabs sample program

[Scampy]

The only difference I can see between your example code and the code I use for LCD in my projects is that my code has

DEFINE LCD_COMMANDUS 2000               ' Command delay time in us 
DEFINE LCD_DATAUS 50                    ' Data delay time in us

After the definition for LCD_Lines

DEFINE LCD_DREG  PORTB                  ' LCD Data port
DEFINE LCD_DBIT  0                      ' starting Data bit (0 or 4)
DEFINE LCD_EREG  PORTB                  ' LCD Enable port
DEFINE LCD_EBIT  5                      '     Enable bit  (on EasyPIC 5 LCD)
DEFINE LCD_RSREG PORTB                  ' LCD Register Select port
DEFINE LCD_RSBIT 4                      '     Register Select bit   (on EasyPIC 5 LCD)
DEFINE LCD_BITS  4                      ' LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 4                      ' number of lines on LCD
DEFINE LCD_COMMANDUS 2000               ' Command delay time in us 
DEFINE LCD_DATAUS 50                    ' Data delay time in us

I always use PORTB as I have an EasyPIC development board and that's the default wiring for the LCD, so can't comment on using pins on other ports for the enable / reset lines, but in theory, if they are set to digital it should be OK

[Michael]

Yes Scampy, I had that in the code as well but commented it out -- tried it both ways. No go. This is so weird. And yes, I have rw tied to ground but not the unused data pins on the LCD -- heading to the workbench to try that.

[Michael]

always something embarrassing -- in my frustration to try everything, forgot to move data to db0 - db3. it was still on the default of db4 -- db7

head in sand.

[andybarrett1]

always something embarrassing -- in my frustration to try everything, forgot to move data to db0 - db3. it was still on the default of db4 -- db7

head in sand.

I did exactly the same the other day......Any room in that sand ???

Andy