问答

PY32F030无法使用ADC同时触发DMA与中断 不知道为什么,触发DMA就无法触发ADC的中断,,,触发中断就不能触发DMA,莫名其妙程序如下,写法是DMA的,如果进入中断则C = 100; TIM_HandleTypeDef timh1 = {0}; TIM_OC_InitTypeDef timocinitstruct = {0}; TIM_MasterConfigTypeDef sMasterConfig = {0}; GPIO_InitTypeDef gpioinitstruct = {0}; ADC_HandleTypeDef ADCh1 = {0}; ADC_ChannelConfTypeDef sConfig = {0}; DMA_HandleTypeDef FOCDMAinitstruct = {0}; uint16_t ADC_value[2] = {0}; uint8_t C = 50; void FOR_RCC_init(void) { //TIM需要 __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_TIM1_CLK_ENABLE(); //ADC __HAL_RCC_ADC_FORCE_RESET(); __HAL_RCC_ADC_RELEASE_RESET(); /* 复位ADC */ __HAL_RCC_ADC_CLK_ENABLE(); /* ADC时钟使能 */ __HAL_RCC_DMA_CLK_ENABLE(); } void ADC_NVIC_init(void) { HAL_NVIC_SetPriority(ADC_COMP_IRQn, 0, 0); /* 中断优先级设置 */ HAL_NVIC_EnableIRQ(ADC_COMP_IRQn); /* ADC中断使能 */ } void ADC_DMA_init(void) { HAL_SYSCFG_DMA_Req(0); //不知道什么东西 FOCDMAinitstruct.Instance = DMA1_Channel1; FOCDMAinitstruct.Init.Direction = DMA_PERIPH_TO_MEMORY; FOCDMAinitstruct.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD; FOCDMAinitstruct.Init.MemInc = DMA_MINC_ENABLE; FOCDMAinitstruct.Init.Mode = DMA_CIRCULAR; FOCDMAinitstruct.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; FOCDMAinitstruct.Init.PeriphInc = DMA_PINC_DISABLE; FOCDMAinitstruct.Init.Priority = DMA_PRIORITY_MEDIUM; __HAL_LINKDMA(&ADCh1,DMA_Handle,FOCDMAinitstruct); HAL_DMA_Init(&FOCDMAinitstruct); } void FOR_ADC_init(void) { //GPIO_init gpioinitstruct.Mode = GPIO_MODE_ANALOG; gpioinitstruct.Pin = GPIO_PIN_0 | GPIO_PIN_1; gpioinitstruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA,&gpioinitstruct); ADCh1.Instance = ADC1; HAL_ADCEx_Calibration_Start(&ADCh1); /* ADC校准 */ ADCh1.Instance = ADC1; ADCh1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV1; /* 设置ADC时钟 */ ADCh1.Init.Resolution = ADC_RESOLUTION_12B; /* 转换分辨率12bit */ ADCh1.Init.DataAlign = ADC_DATAALIGN_RIGHT; /* 数据右对齐 */ ADCh1.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD; /* 扫描序列方向：向上 */ ADCh1.Init.EOCSelection = ADC_EOC_SEQ_CONV; /* 连续采样??? */ ADCh1.Init.LowPowerAutoWait = ENABLE; /* 等待转换模式 */ ADCh1.Init.ContinuousConvMode = ENABLE; /* 连续转换模式 */ ADCh1.Init.DiscontinuousConvMode = DISABLE; /* 不使能非连续模式 */ ADCh1.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_TRGO; /* TIM1TRGO触发 */ ADCh1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING; ADCh1.Init.DMAContinuousRequests = ENABLE; /* 使能DMA */ ADCh1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN; /* 当过载发生时，覆盖上一个值 */ ADCh1.Init.SamplingTimeCommon=ADC_SAMPLETIME_3CYCLES_5; /* 设置采样周期 */ HAL_ADC_Init(&ADCh1); sConfig.Channel = ADC_CHANNEL_0; sConfig.Rank = ADC_RANK_CHANNEL_NUMBER; HAL_ADC_ConfigChannel(&ADCh1, &sConfig); sConfig.Channel = ADC_CHANNEL_1; sConfig.Rank = ADC_RANK_CHANNEL_NUMBER; HAL_ADC_ConfigChannel(&ADCh1, &sConfig); //HAL_ADC_Start_IT(&ADCh1); HAL_ADC_Start_DMA(&ADCh1,(uint32_t*)(ADC_value),2); } void TIM1_PWM_init(void) { //TIM_init timh1.Instance = TIM1; timh1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; timh1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; timh1.Init.CounterMode = TIM_COUNTERMODE_CENTERALIGNED1; timh1.Init.Period = 1200-1; //20KHz 1200*2 10KHz timh1.Init.Prescaler = 2-1; timh1.Init.RepetitionCounter = 0; HAL_TIM_Base_Init(&timh1); /* 配置TIM1为主机模式 输出TRGO信号 */ sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE; /* 选择更新事件作为触发源 */ sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; /* 主/从模式无作用 */ HAL_TIMEx_MasterConfigSynchronization(&timh1, &sMasterConfig); /* 配置TIM1 */ HAL_TIM_Base_Start(&timh1); } void ADC_COMP_IRQHandler(void) //这个都进不来 { HAL_ADC_IRQHandler(&ADCh1); } void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc) //ADC中断 { if(hadc->Instance == ADC1) { C=100; } }