我用411的ADC采集程序，出来的数据总为0；
初始化代码：GPIO_InitTypeDef GPIO_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_InitTypeDef ADC_InitStructyre;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_Pin = GPIO_PinSource0;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_Init(GPIOB,&GPIO_InitStructure);
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled; //??DMA
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent; //????
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8; //??????
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_20Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_InitStructyre.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructyre.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructyre.ADC_ExternalTrigConv = ADC_ExternalTrigConvEdge_None;
ADC_InitStructyre.ADC_NbrOfConversion = 1;
ADC_InitStructyre.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructyre.ADC_ScanConvMode = ENABLE;
ADC_Init(ADC1,&ADC_InitStructyre);
ADC_Cmd(ADC1,ENABLE);
ADC_RegularChannelConfig(ADC1,ADC_Channel_8,1,ADC_SampleTime_144Cycles);
ADC_SoftwareStartConv(ADC1);
主函数调用;
while (1)
{
k=ADC_GetConversionValue(ADC1);;
j=k<<8;
printf("%x%x\r\n",j,k);
}
不知是哪里出了问题，求大神帮助0.0，用mbed的程序是能成功采集的，所以板子没问题，到keil上就不行了，我也不知道是哪儿错了...... |
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