problem in programming ARM-7 LPC 2129 to interface with LCD

[ARAVINDHANK]

I need to know how to access P0.16 to P0.23.
I have tried it in the following manner as suggested in the data sheet, but they doesnt work.
"FIO0PIN2 =value;" or "IO0PIN=(IO0PIN && 0xFF00FFFF) || value;".
please anybody help me.....

 

[anj]

HI..
the basic is if you want to set pins from 16 to 23 then

IOSET0=0x00ff0000;

and to clear only those pins

IOSET0=0xff00ffff;

that's it.... now if value=0x55; and you want to send it on pins 16 to 23 then
IOSET0=(value<<16);

check the attached files.. there is proteus simulation too insisde it..:wink:
Hope this helps..
Regards ANJ