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Arrays and pointers

 
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a.mattioli



Joined: 19 Jun 2007
Posts: 4

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Arrays and pointers
PostPosted: Tue Jun 19, 2007 7:46 am     Reply with quote

I have some problem about the character string to serial transmission with RS232. I use the PIC16F877 and in the book "Embedded C Programming and the Microchip PIC" of THOMSON (written by Barnett, Cox & O'Cull) to pg. 49 there is an example about the character string.
I would know the reason because on video I show:
" This is a test  / "
Below, I write the code:


#include <16F877.h>
#fuses HS
#use delay(clock=20000000)
#use rs232(baud=9600, parity=N, xmit= PIN_C5, rcv=PIN_C7,stream=, bits=8)
#include <stdio.h>

void main()
{
char i;
char *p;
const char s[15] = {"This is a test"};

for(i=0; i<15; i++) putchar(s[i]);
p = s;
for(i=0; i<15; i++) putchar(*p++);
}
future



Joined: 14 May 2004
Posts: 330

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PostPosted: Tue Jun 19, 2007 7:51 am     Reply with quote

The compiler does not allow pointer to constants.

try with char s[15] = {"This is a test"};
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