Post by thread:[AVR]: strange if sentence

Hi! Under here I reported a very simple code which should write on LCD 'A' if pind(1) is pressed and 'B' if pind(2) is pressed. When I try it, if I press the same switch more times, character on LCD change!!! I don't understand why. Could anyone suggest me anything ? thx, Marco Trapanese --- e-mail: spam_OUTmarcotrapaneseTakeThisOuTtin.it web: http://members.xoom.it/m_trapanese *** C code *** #include <lcdstk.h> #include <90s8515.h> void main(void) { DDRD.1=0; DDRD.2=0; lcd_init(16); lcd_clear(); while (1) { if (PIND.1) { lcd_gotoxy(0, 0); lcd_putsf("A"); } if (PIND.2) { lcd_gotoxy(0, 0); lcd_putsf("B"); } }; } -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam@spam@mitvma.mit.edu

Does your lcd_putsf function poll the LCD's busy flag? If not you may be trying to write to the LCD while it's still processing a previous command. Mike > {Original Message removed}

> Does your lcd_putsf function poll the LCD's busy flag? If not you may be > trying to write to the LCD while it's still processing a previous command. > > Mike thanks for answer !!! I solved the problem, there was a problem in lcd_putsf function and also in hardware input pins. best regards, Marco Trapanese --- e-mail: marcotrapaneseKILLspamtin.it web: http://members.xoom.it/m_trapanese -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads