how to interface 5x7 matrix led with 8051

[Rubina_pinto]

I am learning 8051 & have interfaced it with leds, lcd, 7 segment leds,etc
I am trying to interface it with a 5x7 matrix led display and soon if successful would go ahead with 8x8 matrix led interfacin also. I tried some bit of coding, am not getting errors but am not getting my required o/p either.
I am using Keil as my compiler & Proteus as my simulator
I want to display alphebets A to Z on it with some delay. also let me know the connections.

here's my code

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#include <reg51.h>
 
unsigned char code LED_Alphabets[130]={
0x7e, 0X09, 0X09, 0X09, 0x7e, // A
0x7f, 0X49, 0X49, 0X49, 0X36, // B
0x3e, 0X41, 0X41, 0X41, 0X22,
0x7f, 0X41, 0X41,0X22, 0x1c,
0x7f, 0X49, 0X49, 0X49, 0X63,
0x7f, 0X09, 0X09, 0X09, 0X01,
0x3e, 0X41, 0X41, 0X49, 0x7a,
0x7f, 0X08, 0X08, 0X08, 0x7f,
0X00, 0X41, 0x7f, 0X41, 0X00, // I
0X20, 0X40, 0X41, 0x3f, 0X01,
0X7f, 0X08, 0X14, 0X22, 0X41,
0x7f, 0X40, 0X40, 0X40, 0X60,
0x7f, 0X02, 0X04, 0X02, 0x7f,
0x7f, 0X04, 0X08, 0X10, 0x7f,
0x3e, 0X41, 0X41, 0X41, 0x3e,
0x7f, 0X09, 0X09, 0X09, 0X06,
0x3e, 0X41, 0X51, 0X21, 0x5e,
0x7f, 0X09, 0X19, 0X29, 0X46,
0X46, 0X49, 0X49, 0X49, 0X31, // S
0X01, 0X01, 0x7f, 0X01, 0X01,
0x3f, 0X40, 0X40, 0X40, 0x3f,
0x1f, 0X20, 0X40, 0X20, 0x1f,
0x3f, 0X40, 0X30, 0X40, 0x3f,
0X63, 0X14, 0X08, 0X14, 0X63,
0X07, 0X08, 070, 0X08, 0X07,
0X61, 0X51, 0X49, 0X45, 0X43 // Z
};
unsigned int LED;
int i;
 
void main()
{
P2=0;
P0=0;
for(;;)
{ 
//P0=~LED_Alphabets[LED];
P2=~LED_Alphabets[LED];
 
for(i=0;i<2500;i++)
{
for(i=0;i<30000;i++);
 
}
LED++;
 
if(LED==25) 
LED=0;
} 
}

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[erwin yudha]

@Rubina,

Read **broken link removed**, maybe useful.

 

[Rubina_pinto]

@Rubina,

Read **broken link removed**, maybe useful.

Thanx for the pdf Erwin, but the version which I am using doesn't support AT89S52, I'l surely try ur idea once I get clear with a simple 5x7 matrix led application!

 

[erwin yudha]

805X, 89C5X, 89S5X to many similar features in the architecture and instruction. It becomes possible for the 8051 designer to directly start using 89C5X or 89S5X, or vice versa.