Thread: problem with array

What is wrong with this code?

It says that when i set
int x = myarray[0][0];
that there is no array(Specific subscript on non array or too many dimensions)


#include <reg52.h>
#include <stdio.h>
#define XBYTE ((unsigned char volatile xdata*) 0)


static char sxima[3][4] = {
{4, 3, 0, 0},
{0x00, 0xFF, 0x00, 0xFF},
{0xFF, 0x00, 0xFF, 0x00}
};


void display1(int x_page, int y_dimension, int myarray){

int x = myarray[0][0];
int y = myarray[0][1];

int i, j;

for (j=1; j <x-1; j++) {
for (i=0; i<y-1; i++) {

myarray[j][i];

}
}


}

void main(void) {
display1(2, 10, sxima);
}

but i want to use the display1 function several times with different arrays to import and different array dimensions.

What can i do about this?

I'm posting here, because you didn't use code-tags , not just you, a lot of new members, this event is starting to be boring, always people forget or even didn't read about the code tags.

ok, sorry

i didn't know it.

I tried to redesign it, there is not problem in debugging but there are a lot of errors in linking. The problems are saying:

ERROR 104: MULTIPLE PUBLIC DEFINITIONS
WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
I don't have enough experience so i do not know what to do.

could you have a look at the code?

Code:

#include <reg52.h>
#include <stdio.h>  
#define XBYTE ((unsigned char volatile xdata*) 0)
void delay(void);


void data_enable1(void) {
delay();
XBYTE[0x8002] = 0x06; // E=0
delay();
XBYTE[0x8002] = 0x16; // E=1
delay();
XBYTE[0x8002] = 0x06; // E=0
}


void instr_enable1(void) {
delay();
XBYTE[0x8002] = 0x04; // E=0
delay();
XBYTE[0x8002] = 0x14; // E=1
delay();
XBYTE[0x8002] = 0x04; // E=0
}


void data_enable2(void) {
delay();
XBYTE[0x8002] = 0x0A; // E=0
delay();
XBYTE[0x8002] = 0x1A; // E=1
delay();
XBYTE[0x8002] = 0x0A; // E=0
}


void instr_enable2(void) {
delay();
XBYTE[0x8002] = 0x08; // E=0
delay();
XBYTE[0x8002] = 0x18; // E=1
delay();
XBYTE[0x8002] = 0x08; // E=0
}



void delay(void) { 
unsigned int d;
for (d=0; d<20; d++);}



void display1(int x_page, int y_dimension, int x, int y, unsigned char volatile xdata *myarray) {

//      *(myarray+ x*YPOS+XPOS);
 
int i, j;

	for (j=0; j<x; j++) {
	unsigned int b = 184 + x_page + x;
			
			delay();
			XBYTE[0x8000] = b;
			instr_enable1();	


			for (i=0; i<y; i++) {
			unsigned int c = 64 + y_dimension + y;
					delay();
					XBYTE[0x8000] = c;
					instr_enable1();

					delay();
					XBYTE[0x8000] = *(myarray+ x*j+i);
					data_enable1();
			
			}
	}


}

void main(void) {
unsigned char volatile xdata* XMEM;

unsigned char volatile xdata sxima[3][4] = {
					 {3, 4, 0x00, 0x00},
					 {0x00, 0xFF, 0x00, 0xFF},
					 {0xFF, 0x00, 0xFF, 0x00}
 					 };

XMEM = &sxima[0][0];
display1(2, 10, sxima[0][0],sxima[0][1], XMEM);
}

i don't think so. xdata is saying that it wil be stored in the outside memory of the microcontroller.
I am working on an embedded system.