紧急求助!IAR C FOR SAM8程序优化出错
紧急求助!IAR C FOR SAM8程序优化出错不知什么原因,用IAR V2.21A(用V2.30A也是一样) 编写的小程序具体如下,单片机S3F9444,选择不同的优化(size优化),结果差非常大,优其是HIGH级优化,可以说已经变成完全不同程序了,是不是哪里设置错误?望路过的大位侠赐教,谢谢!
//**********************************************************************
//#include <stdio.h>
#include "ioS3C9444.h"
#include "intrinsics.h"
//**********************************************************************
//**********************************************************************
void __no_operation(void);
void buz(unsigned int b_time);
/********************************************************************
smart option
003C=00H;
003D=00H;
003E=11001000(0xC8) LVR enable 3.0V
003F=00000011B; internal RC oscillator3.2MHZ
*******************************************************************/
__code const volatile unsigned char SmartOption @0x003C=
{0x00,0x00,0xC8,0x03};
//*********************************************************************
void main(void)
{
//***填充系统SMART OPTION***/
unsigned char buffer = SmartOption;
//********************************************************************
unsigned d;
//********************************************************************
__disable_interrupt();//SYM=0x00;//stop all interrupt
//BTCON=0x03;// watch_dog enable 00000011B
BTCON=0xA0;// watch_dog disable 1010000B
CLKCON=0x98;//no divided CPU clock10011000B
SP=0x20;//initialize stact pointer
P0CONL|=0x28;//00101001B P0.2,P0.1 as push-pull output,P0.0 as input
//P0.2 as buz signal,P0.1 as SW signal, P0.0 as RC signal reciver
P0PND=0x00; //00000010B INT0 ,INT1 disable
P1CON=0x0A; //00001010B P1 as output,but P1.2 can only as input******
P1=0; //P1.1 ,P1.0 as 0,P1.2 can only as input***
P0=0; //P0.2 ,P0.1 as 0
//*******************************************************************
d=0;
//*******************************************************************
next0:
for(d=0;d<3000;d++)
{
;
}
buz(2000);
for(d=0;d<9000;d++)
{
;
}
goto next0;
}
//*******************************************************************
void buz(unsigned b_time)
{
unsigned int b;
b=0;
loop:
P0|=0x04; //P0.2 as 1
for(b=0;b<14;b++)
{
__no_operation();
}
if(b_time>0)
{
__no_operation();
}
P0&=0xFB; //P0.2 as 0
for(b=0;b<14;b++);
{
__no_operation();
}
if(b_time>1)
{
b_time--;
goto loop;
}
}
页:
[1]