Errormessages with LCD on AVR

[Frank Steinberg]

Hi!

Had some irritations while playing with 4-bit LCD on AVR-microcontroller:

#chip mega8,1
'LCD connection settings
#define LCD_IO 4
#define LCD_DB4 PORTB.0
#define LCD_DB5 PORTB.1
#define LCD_DB6 PORTB.2
#define LCD_DB7 PORTB.3
#define LCD_Enable PORTB.4
#define LCD_RS PORTB.5
#define LCD_NO_RW
CLS

Errormessage after compiling:
Error: GCASM: Symbol SYSCALCTEMPA has not been defined

#chip mega8,1
'LCD connection settings
#define LCD_IO 4
#define LCD_DB4 PORTB.0
#define LCD_DB5 PORTB.1
#define LCD_DB6 PORTB.2
#define LCD_DB7 PORTB.3
#define LCD_Enable PORTB.4
#define LCD_RS PORTB.5
#define LCD_NO_RW
Print "Hello"

Errormessage after compiling:
Error: GCASM: Symbol SYSCALCTEMPB has not been defined
Error: GCASM: Symbol SYSCALCTEMPX has not been defined

At the end everything works without errormessages after adding LOCATE … , but was not easy to investigate.

_________________________
Steini

[Hugh Considine]

That is an embarassing bug that should not have escaped! The compiler was using some variables without declaring them properly. Please try the update from http://gcbasic.sourceforge.net/update.html and let me know if that has fixed the bug or not.

[Frank Steinberg]

That is an embarassing bug that should not have escaped! The compiler was using some variables without declaring them properly. Please try the update from http://gcbasic.sourceforge.net/update.html and let me know if that has fixed the bug or not.

[Tried out the update and code works fine now. Thanks a lot.

_________________________
Steini](http://gcbasic.sourceforge.net/update.html)