stm8L ADC+DMA，DMA不产生中断

郁工提问时间：2017-5-10 17:07 /

问答
是否解决:

如题，stm8L051单片机，多通道采样DMA传输，DMA不产生中断，没有采样到数据。初始化函数如下：
volatile  u16 ADC_ConvertedValue[3];
#define  ADC_DRH_ADRESS    0x5344

void DMA_ADC_Initial(void)
{
GPIO_Init(GPIOB , GPIO_Pin_0 , GPIO_Mode_In_FL_No_IT);  //AD通道18 , 设置PB0 为悬空输入，并中断禁止
GPIO_Init(GPIOD , GPIO_Pin_0 , GPIO_Mode_In_FL_No_IT);  //AD通道22 , 设置PD0 为悬空输入，并中断禁止

/* Enable ADC1 clock */
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
Delay2(100);
/* Enable DMA1 clock */
CLK_PeripheralClockConfig(CLK_Peripheral_DMA1, ENABLE);
Delay2(100);
DMA_GlobalDeInit();
DMA_DeInit(DMA1_Channel0);
ADC_DeInit(ADC1);
/* Initialize and configure ADC1 */
ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_2);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_384Cycles);
ADC_SamplingTimeConfig(ADC1, ADC_Group_FastChannels, ADC_SamplingTime_384Cycles);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 Channels 1 */
ADC_ChannelCmd(ADC1, ADC_Channel_18, ENABLE); /* connected to Potentiometer RV */
/* Enable ADC1 Channels 2 */
ADC_ChannelCmd(ADC1, ADC_Channel_22, ENABLE); /* connected to Potentiometer RV */

// Vref
ADC_VrefintCmd(ENABLE);
ADC_ChannelCmd(ADC1, ADC_Channel_Vrefint, ENABLE);
ADC_SchmittTriggerConfig(ADC1, ADC_Channel_Vrefint, DISABLE);
/* Connect ADC to DMA channel 0 */
SYSCFG_REMAPDMAChannelConfig(REMAP_DMA1Channel_ADC1ToChannel0);
DMA_Init(DMA1_Channel0, (uint32_t)ADC_ConvertedValue,
         ADC_DRH_ADRESS,
         3,
         DMA_DIR_PeripheralToMemory,
         DMA_Mode_Circular,
         DMA_MemoryIncMode_Inc,
         DMA_Priority_High,
         DMA_MemoryDataSize_HalfWord);
/* DMA Channel0 enable */
DMA_Cmd(DMA1_Channel0, ENABLE);
/* Enable DMA1 channel0 Transfer complete interrupt */
DMA_ITConfig(DMA1_Channel0, DMA_ITx_TC, ENABLE);
/* DMA enable */
DMA_GlobalCmd(ENABLE);
/* Enable ADC1 DMA requests*/
ADC_DMACmd(ADC1, ENABLE);
Delay2(1000);
/* start ADC convertion by software */
ADC_SoftwareStartConv(ADC1);
}