Hello,
I am trying to send some volts to my databus and i meter them.
The program is following.
#include <reg51.h>
#define XBYTE ((unsigned char volatile xdata*) 0)
void main(void) {
while(1) {
XBYTE[0x8001] = 0xFF; // Arxikopoihsh toy 8255 se mode 0
}
}
I put the while for the data to remain as it loops forever.
So with this command i am sending to the 8001(A15,A0,A1=1) address the FF comand(DB0->DB7 = 1111 1111)
So these are the volts i want to have in my outs.
But i meter values like 0,62 volt, 2.10 volt, 4.10 volt and of;course not in the order i want them.
Could someone tell me if is something obvious why it is not working??
I am new so excuse me if i make a serious mistake
