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Read-Only Author Sendhilraj Thangaraj Posted 17-Oct-2005 23:25 Toolset ARM |  Scanf statementSendhilraj Thangaraj 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 01:38 Toolset ARM | getchar() A.W. Neil "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 01:46 Toolset ARM | getchar() works well Sendhilraj Thangaraj 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 03:50 Toolset ARM | RE: getchar() works well Stefan Duncanson Have you written your own getchar() function? |
Read-Only Author Sendhilraj Thangaraj Posted 18-Oct-2005 04:22 Toolset ARM | RE: getchar() works well Sendhilraj Thangaraj No i didnt write my getchar functions. |
Read-Only Author Reinhard Keil Posted 18-Oct-2005 05:10 Toolset ARM | RE: getchar() works well Reinhard Keil 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 06:54 Toolset ARM | RE: getchar() works well Sendhilraj Thangaraj Even after using #pragma INTERWORKi am getting the same error ! |
Read-Only Author Reinhard Keil Posted 18-Oct-2005 07:20 Toolset ARM | RE: getchar() works well Reinhard Keil 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 07:38 Toolset ARM | RE: getchar() works well Sendhilraj Thangaraj sure i will do the same.Thanks |
Read-Only Author Reinhard Keil Posted 18-Oct-2005 08:26 Toolset ARM | RE: getchar() works well Reinhard Keil 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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