stm32ADC转化使用多通道时有一个通道数据有问题，求帮助！

Yellow5A5 2014-06-18 06:14:00

int main(void)
{
#ifdef DEBUG
debug();
#endif

/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();

/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();

/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();

/* Configure the USART1 */
USART_Configuration1();

printf("\r\n USART1 print AD_value -------------------------- \r\n");

/* DMA channel1 configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_ConvertedValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);

/* Enable DMA channel1 */
DMA_Cmd(DMA1_Channel1, ENABLE);

/* ADC1 configuration ------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);

/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);

/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);

/* Enable ADC1 reset calibaration register */
ADC_ResetCalibration(ADC1);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1));

/* Start ADC1 calibaration */
ADC_StartCalibration(ADC1);

/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1));

/* Start ADC1 Software Conversion */
ADC_SoftwareStartConvCmd(ADC1, ENABLE);

while(1)
{
for(Y=0;Y<5;Y++);
if (ticks++ >= 1800000) { /* Set Clock1s to 1 every 1 second */
ticks = 0;
Clock1s = 1;
}
/* Printf message with AD value to serial port every 1 second */
if (Clock1s)
{
Clock1s = 0;
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);
AD0=ADC_GetConversionValue(ADC1);
printf("%04i-", AD0);

ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_55Cycles5);
AD1=ADC_GetConversionValue(ADC1);
printf("%04i-", AD1);

ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 1, ADC_SampleTime_55Cycles5);
AD2=ADC_GetConversionValue(ADC1);
printf("%04i-", AD2);

ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 1, ADC_SampleTime_55Cycles5);
AD3=ADC_GetConversionValue(ADC1);
printf("%04i-", AD3);

ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_55Cycles5);
AD4=ADC_GetConversionValue(ADC1);
printf("%04i-", AD4);

ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 1, ADC_SampleTime_55Cycles5);
AD5=ADC_GetConversionValue(ADC1);
printf("%04i-", AD5);

ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 1, ADC_SampleTime_55Cycles5);
AD6=ADC_GetConversionValue(ADC1);
printf("%04i-", AD6);

ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 1, ADC_SampleTime_55Cycles5);
AD7=ADC_GetConversionValue(ADC1);
printf("%04i-", AD7);

ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5);
AD8=ADC_GetConversionValue(ADC1);
printf("%04i-", AD8);

ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 1, ADC_SampleTime_55Cycles5);
AD9=ADC_GetConversionValue(ADC1);
printf("%04i-", AD9);

ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 1, ADC_SampleTime_55Cycles5);
AD10=ADC_GetConversionValue(ADC1);
printf("%04i-", AD10);

ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 1, ADC_SampleTime_55Cycles5);
AD11=ADC_GetConversionValue(ADC1);
printf("%04i-", AD11);

ADC_RegularChannelConfig(ADC1, ADC_Channel_12, 1, ADC_SampleTime_55Cycles5);
AD12=ADC_GetConversionValue(ADC1);
printf("%04i-", AD12);

ADC_RegularChannelConfig(ADC1, ADC_Channel_13, 1, ADC_SampleTime_55Cycles5);
AD13=ADC_GetConversionValue(ADC1);
printf("%04i-", AD13);

ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_55Cycles5);
AD14=ADC_GetConversionValue(ADC1);
printf("%04i-", AD14);

ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_55Cycles5);
AD15=ADC_GetConversionValue(ADC1);
printf("%04i-", AD15);

ADC_RegularChannelConfig(ADC1, ADC_Channel_16, 1, ADC_SampleTime_55Cycles5);
AD16=ADC_GetConversionValue(ADC1);
printf("%04i-", AD16);
}

}
}

串口助手接收到的数据如下~

0837-0746-0999-0886-4042-2512-0807-2566-2702-0643-0662-2448-2386-0774-0945-2080-1094-

0003-0742-0998-0895-4043-2510-0809-2564-2699-0640-0662-2443-2376-0772-0942-2071-1090-

0003-0747-1008-0910-4042-2531-0814-2571-2708-0645-0664-2447-2373-0770-0938-2061-1083-

代码基本是套例程的~
有问题的分别是ad0和ad4、
stm32有16个外部通道ad。
我这里多了个AD0~它除了一开始有电压，然后就一直都是0，因为我只要用16个，所以我直接无视它好了。

但是AD4为什么一直都是处于高电压状态？？没办法测外部电压~
请告诉我改如何修改~T_T 急

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