现在搞个AD转换老是不行,得出的结果一直是0
下面是我的程序,哪位大侠帮忙看下问题出在哪里,谢谢了
/*---------------------------------CMU---------------------------------------*/
/* CMU Initialization */
CMU_DeInit( );
CMU_StructInit(&CMU_InitStructure);
/* Enable the external Quartz clock source */
CMU_InitStructure.CMU_CKSEL0 = CMU_CKSEL0_CKOSC;
CMU_Init(&CMU_InitStructure);
/*-------------------------------------PRCCU---------------------------------*/
/* PRCCU Initialization */
PRCCU_DeInit();
PRCCU_StructInit(&PRCCU_InitStructure);
/* Set MCLK = 8MHz */
PRCCU_InitStructure.PRCCU_DIV2 = DISABLE;
PRCCU_InitStructure.PRCCU_PLLDIV = PRCCU_PLLDIV_6;
PRCCU_InitStructure.PRCCU_PLLMUL =PRCCU_PLLMUL_12;
PRCCU_Init(&PRCCU_InitStructure);
/*---------------------------------ADC---------------------------------------*/
/* ADC Clock Enable */
CFG_PeripheralClockConfig(CFG_CLK_ADC, ENABLE);
/* ADC Configuration */
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Calibration = ADC_Calibration_ON;
ADC_InitStructure.ADC_CalibAverage = ADC_CalibAverage_Enable;
ADC_InitStructure.ADC_AutoClockOff = ADC_AutoClockOff_Disable ;
ADC_InitStructure.ADC_ConversionMode = ADC_ConversionMode_Scan;
ADC_InitStructure.ADC_SamplingPrescaler = 0x7;
ADC_InitStructure.ADC_ConversionPrescaler = 0x7;
ADC_InitStructure.ADC_FirstChannel = ADC_CHANNEL13 ;
ADC_InitStructure.ADC_ChannelNumber = 1;
ADC_Init (&ADC_InitStructure);
void main()
{
ADC_InitTypeDef ADC_InitStructure;
#ifdef DEBUG
debug();
#endif
static u16 value=0;
while (1)
{ ADC_Cmd(ENABLE);
ADC_ConversionCmd(ADC_ConversionStart);
while(ADC_FlagStatus (ADC_FLAG_EOC)==0)
NOP;
ADC_ConversionCmd (ADC_ConversionStop);
value=ADC_GetConversionValue(ADC_CHANNEL13);
ADC_FlagClear(ADC_FLAG_EOC);
if((value&0x03ff)> 0x01)
GPIO_BitWrite( GPIO1, POWER_ON, Bit_RESET);
delay_us(1000);
}
}
程序流程就是这样的,帮忙看看
谢谢了
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