新唐单片机n76e003的ADC这么配置有什么问题吗?AD读出来是错的。

void ADC_Init(void)
{
P0M1 |= 0X30; //0011 0000 P0.4(AIN5)¡¢P0.5(AIN4)ÉèÖÃΪ¸ß×èÊäÈëPxM1,PxM2:10
P0M2 &= 0xCF; //1100 1111

AINDIDS = 0x00;
AINDIDS = 0x30;// 0011 0000 1:¹Ø±ÕÊý×ÖÊäÈ뻺³å 0:
//P04P05¹Ø±ÕÊý×ÖÊäÈ뻺³å
ADCF = 0;//Çå³ýת»¯Íê³É±ê־λ
}

//²É¼¯ADC³õʼֵ
unsigned int Read_ADC_Value(unsigned char AD_IN)
{
unsigned int AD_Value = 0;

AD_IN &= 0x0F; //0x04ÎÂ¶È 0x06ʪ¶È
while(ADCS == 1);//µÈ´ý¿ÕÏÐ
ADCF = 0;//Çå³ýת»¯Íê³É±ê־λ
ADCCON0 &= 0xF0;
ADCCON0 |= AD_IN ; //±£Ö¤µÍ4λΪѡÔñͨµÀÑ¡Ôñ Ñ¡ÔñÎÂʪÊäÈëͨµÀ
ADCCON1 |= 0x01; //´ò¿ªÑ¡ÖеÄADµç·

//ADCF = 0;//Çå³ýת»¯Íê³É±ê־λ
ADCS = 1;//Èí¼þ´¥·¢×ª»¯
delay_1us(3);
while(ADCF == 0);//ת»»Íê³É±ê־λ
AD_Value = ADCRH; //ÌáÈ¡¸ß8λÊýÖµ
AD_Value <<= 4; //12bitADCÕâÀïÈ¡ÆäÖеÄ12bit
AD_Value = AD_Value|(ADCRL&0x0F); //ÌáÈ¡µÍ4λÊýÖµ
//ADCCON1 &= 0xFE;//¹Ø±ÕADCת»»µç·ÒÔ½ÚÄÜ
//AD_Value = AD_Value / 4;
return (unsigned int)AD_Value;
}