谁帮我看一下，模数转换控制继电器的程序，哪里出问题了
#include <iot13v.h>#include <macros.h>
#define uchar unsigned char
#define uintunsigned int
uint AD_data,a;
void port_init(void)
{
PORTB=0B00000001;
DDRB =0B00001110;
}
void delay_ms(uint ms)
{
uint i,j;
for(i=0;i<ms;i++)
for(j=0;j<171;j++);
}
uint AD_port(void)
{
ADMUX|=BIT(MUX1);
ADCSRA|=BIT(ADEN)|BIT(ADSC)|BIT(ADPS1)|BIT(ADPS0);
while((ADCSRA&BIT(ADIF))==0);
AD_data=ADCL;
AD_data+=ADCH*256;
a=AD_data;
a=a>>2;
return(a);
}
void main (void)
{
port_init();
//SEI();
while(1)
{
AD_port();
PORTB|=BIT(3);
if(a>924)
{
PORTB|=BIT(2)|BIT(1);
PORTB&=(~BIT(3));
}
}
}
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