start.c

编程语言是c语言

#include "sfr.h"
#include "port.h"

#include "intrins.h"//使用这个头文件是应为我用到  _nop_()这个库函数//

unchar pwm_wideth;

extern void sensor_read(void);
extern void set_bridge(void);
extern void set_pwm_wideth(unchar x);

void start(void)
{	unint i;
	for (pwm_wideth=255;pwm_wideth>125;pwm_wideth--)
	{
		sensor_read();
		set_pwm_wideth(pwm_wideth);
		set_bridge();
		
		for (i=0;i<7000;i++)
	   _nop_();
	}
}