Block the printf function in Keil 4, please!
I just learned to program a program for the microcontroller AT89C52 using Keil 4:
I have my program and Keil complier posted: "0 Errors (s), 0 Warning (s)." But when I do Debug step with F10 .. The program works fine until the "printf" function and not continue.
I would write to you to ask your advice and support.
Sincerely Tommy
Here is my program:
#include <regx52.H> #include <ctype.h> #include <stdio.h> #include <termios.h> #include <stdlib.h> #include <intrins.h>
void delay_ms(unsigned int ms) { unsigned int x,y; for(x=0;x<ms;x++) for(y=0;y<=125;y++); }
void main() {
unsigned char seg7[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; unsigned char etat7[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; int h,i,j=0;
P0 = 0x00;
P1 = 0x00;
while(h<10) { for(i;i<8;i++) { P0=seg7[i]; delay_ms(1000); P1=seg7[i+2]; delay_ms(1000); printf(" cable bien branché à l'entrée %d et sortie %d",i,i);
} h++; }
}
Where do you think the printf() output goes? Have you implemented any routines to retarget the output?
Consider if you could use sprintf(), and output to your terminal
Hello,
First, I want to thank you for your prompt response for my problem ... My program is linked with a Virtual Terminal IDE Proteus to test the microcontroller AT89C52. But the Virtual Terminal does not also display the "printf" function ...
Is that you can advise me to test this "printf" (an example routine that you know).
Thanks you very much