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Scanf statement

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Author
Sendhilraj Thangaraj
Posted
18-Oct-2005 05:25 GMT
Toolset
ARM
New! Scanf statement
Hi all,

I am trying to get an integer number as input through serial window.To do that I wrote the program below and it didnt work.The problem is with Scanf.Is it correct to give scanf the way that i have given in my program....
when i treid to build i got the following error


#include <stdio.h>
#include <LPC21xx.H>

void main (void)
{
	int a;
  	int b;
  	int c;



/* initialize the serial interface   */
PINSEL0 = 0x00050000;         /* Enable RxD1 and TxD1                     */
U1LCR = 0x83;                   /* 8 bits, no Parity, 1 Stop bit            */
  U1DLL = 97;                     /* 9600 Baud Rate @ 15MHz VPB Clock         */
  U1LCR = 0x03;                   /* DLAB = 0                                 */



  printf ("Enter the value of a b c\n");
  scanf ("%d %d %d", &a, &b, &c);

   }
 

Error


*** ERROR L104: MULTIPLE PUBLIC DEFINITIONS
SYMBOL: getchar?T
MODULE: C:\KEILARM\ARM\LIB\CAL.LIB (getchar)
DEFINED: .\Obj\Serial.obj (Serial)
*** WARNING L23: UNRESOLVED EXTERNAL SYMBOLS
Program Size: data=1172 const=52 code=270
Target not created


looking for ur help
Read-Only
Author
A.W. Neil
Posted
18-Oct-2005 07:38 GMT
Toolset
ARM
New! getchar()
"The problem is with Scanf"

What makes you say that?
The error relates to getchar, not scanf.

You need to sort out the problem with getchar first.
Read-Only
Author
Sendhilraj Thangaraj
Posted
18-Oct-2005 07:46 GMT
Toolset
ARM
New! getchar() works well
the program works well if I use getchar() instead of scanf.

in the ARM development tool manual I read the following The scanf function reads data from the input stream using the getchar routine .
Read-Only
Author
Stefan Duncanson
Posted
18-Oct-2005 09:50 GMT
Toolset
ARM
New! RE: getchar() works well
Have you written your own getchar() function?
Read-Only
Author
Sendhilraj Thangaraj
Posted
18-Oct-2005 10:22 GMT
Toolset
ARM
New! RE: getchar() works well
No i didnt write my getchar functions.
Read-Only
Author
Reinhard Keil
Posted
18-Oct-2005 11:10 GMT
Toolset
ARM
New! RE: getchar() works well
You need to translate the SERIAL.C file using the INTERWORK directive. See:
http://www.keil.com/support/docs/2929.htm

Reinhard
Read-Only
Author
Sendhilraj Thangaraj
Posted
18-Oct-2005 12:54 GMT
Toolset
ARM
New! RE: getchar() works well
Even after using #pragma INTERWORK
i am getting the same error !
Read-Only
Author
Reinhard Keil
Posted
18-Oct-2005 13:20 GMT
Toolset
ARM
New! RE: getchar() works well
Please ZIP all project files and send it to support.intl@keil.com.

I think there is some minor configuration issue that is hard to figure out in the discussion forum.

Reinhard
Read-Only
Author
Sendhilraj Thangaraj
Posted
18-Oct-2005 13:38 GMT
Toolset
ARM
New! RE: getchar() works well
sure i will do the same.
Thanks
Read-Only
Author
Reinhard Keil
Posted
18-Oct-2005 14:26 GMT
Toolset
ARM
New! RE: getchar() works well
There is a mistake in the SERIAL.C. For using scanf, you need to define a _getkey function. Once you rename getchar into _getkey everything will be just fine.

See also:
http://www.keil.com/support/docs/3131.htm

Reinhard

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