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#include
#include #include #include "rtdbg.h" #include "adc_sample.h" #include "main.h" /* 设置数据缓存大小，当SAADC采样完此大小数据时产生一次采样完成事件，采样过程中不需要CPU参与(所有通道均采集完成) */ #define SAMPLE_IN_BUFFER (ADC_CHANNEL_NUMS * 1) //数据缓存大小 static int16_t adc_buffer[SAMPLE_IN_BUFFER]; //数据缓存地址 static adc_sample_t adc_sample = {RT_NULL}; static saadc_cplt_cb_t saadc_callback_list[ADC_CHANNEL_NUMS] = {NULL}; static bool m_status = false; static bool m_int_status = false; DMA_HandleTypeDef hdma_adc3; #if 1 TIM_HandleTypeDef htim3; ADC_HandleTypeDef hadc3; /****************** weak callback ******************/ void DMA2_Stream0_IRQHandler(void) { if(m_int_status == true) return; HAL_ADC_Stop_DMA(&hadc3); for(int i = 0; i < ADC_CHANNEL_NUMS; i++) { if(saadc_callback_list != NULL) { float sample_value = adc_buffer * 3.3 / 4096; saadc_callback_list(sample_value); //LOG_D("p_buffer[%d] :%f", i, sample_value); } } HAL_DMA_IRQHandler(&hdma_adc3); HAL_ADC_Start_DMA(&hadc3, (uint32_t*)adc_buffer, sizeof(adc_buffer)); m_int_status = false; } void TIM3_IRQHandler(void) { HAL_TIM_IRQHandler(&htim3); } /* 定时器3初始化 */ static uint8_t MX_TIM3_Init(void) { uint8_t err_ret = RT_ERROR; TIM_ClockConfigTypeDef sClockSourceConfig = {0}; TIM_MasterConfigTypeDef sMasterConfig = {0}; htim3.Instance = TIM3; htim3.Init.Prescaler = 8400; htim3.Init.CounterMode = TIM_COUNTERMODE_UP; htim3.Init.Period = 10 * SAMPLE_TIME_INTERVAL; //设置采样周期 htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE; do{ if (HAL_TIM_Base_Init(&htim3) != HAL_OK) break; sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL; if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK) break; sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK) break; err_ret = RT_EOK; LOG_D("MX_TIM3_Init success!"); }while(0); return err_ret; } /** * Enable DMA controller clock */ static void MX_DMA_Init(void) { /* DMA controller clock enable */ __HAL_RCC_DMA2_CLK_ENABLE(); /* DMA interrupt init */ /* DMA2_Stream0_IRQn interrupt configuration */ HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn); LOG_D("MX_DMA_Init success!"); } static void MX_DMA_DeInit(void) { /* DMA controller clock enable */ __HAL_RCC_DMA2_CLK_DISABLE(); /* DMA interrupt init */ /* DMA2_Stream0_IRQn interrupt configuration */ HAL_NVIC_DisableIRQ(DMA2_Stream0_IRQn); LOG_D("MX_DMA_DeInit success!"); } /** * @Brief ADC3 Initialization Function * @param None * @retval None */ static uint8_t MX_ADC3_Init(void) { uint8_t err_ret = RT_ERROR; ADC_ChannelConfTypeDef sConfig = {0}; /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */ hadc3.Instance = ADC3; hadc3.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; hadc3.Init.Resolution = ADC_RESOLUTION_12B; hadc3.Init.ScanConvMode = ENABLE; hadc3.Init.ContinuousConvMode = DISABLE; hadc3.Init.DiscontinuousConvMode = DISABLE; hadc3.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING; hadc3.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T3_TRGO; hadc3.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc3.Init.NbrOfConversion = ADC_CHANNEL_NUMS; hadc3.Init.DMAContinuousRequests = ENABLE; hadc3.Init.EOCSelection = ADC_EOC_SINGLE_CONV; do { if (HAL_ADC_Init(&hadc3) != HAL_OK) break; /** Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.*/ sConfig.Channel = ADC_CHANNEL_3; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK) break; /** Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time. */ sConfig.Channel = ADC_CHANNEL_6; sConfig.Rank = 2; if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK) break; err_ret = RT_EOK; LOG_D("MX_ADC3_Init success!"); }while(0); return err_ret; } static void saadc_sample_start(void) { do{ if (HAL_ADC_Start_DMA(&hadc3, (uint32_t*)adc_buffer, sizeof(adc_buffer)) != HAL_OK) { LOG_D("HAL_ADC_Start_DMA error!"); break; } if (HAL_TIM_Base_Start_IT(&htim3) != HAL_OK) { LOG_D("HAL_TIM_Base_Start_IT error!"); break; } m_int_status = false; }while(0); } static void saadc_init(void) { MX_TIM3_Init(); MX_DMA_Init(); MX_ADC3_Init(); } static void saadc_unint(void) { HAL_TIM_Base_Stop_IT(&htim3); //关闭采集定时器 HAL_ADC_Stop_DMA(&hadc3); //关闭ADC DMA采集 /* 初始化定时器为默认配置 */ HAL_TIM_Base_DeInit(&htim3); /* 初始化DMA为默认配置 */ MX_DMA_DeInit(); /* 初始化SAADC为默认配置 */ HAL_ADC_DeInit(&hadc3); } #endif static void saadc_sample(uint8_t channel, saadc_cplt_cb_t callback) { int i = 1; i = i; //assert(channel < ADC_CHANNEL_NUMS); saadc_callback_list[channel] = callback; if(m_status == true) return; saadc_init(); saadc_sample_start(); m_status = true; LOG_D("saadc_sample is ernter!"); } static void saadc_sample_cplt(uint8_t channel) { assert(channel < ADC_CHANNEL_NUMS); saadc_callback_list[channel] = NULL; int idx = 0; for(; idx < ADC_CHANNEL_NUMS; idx++) if(saadc_callback_list[idx] != NULL) break; if(m_status == false || idx < ADC_CHANNEL_NUMS) return; saadc_unint(); m_status = false; LOG_D("saadc_sample_cplt is ernter!"); } static int adc_sample_init(void) { assert(ADC_CHANNEL_NUMS < 8); adc_sample.sample = saadc_sample; adc_sample.sample_cplt = saadc_sample_cplt; return 0; } INIT_PREV_EXPORT(adc_sample_init); adc_sample_t* adc_sample_get(void) { return &adc_sample; } 新增回 |
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这可能是由于内存泄漏导致的。在使用DMA进行数据传输时，需要在适当的时候释放DMA缓冲区以避免内存泄漏。您可以检查代码中是否出现未释放DMA缓冲区的情况。另外，使用mqtt传输数据时也需要谨慎处理内存，以避免内存溢出或内存泄漏。建议您检查代码中是否存在可能导致内存问题的情况，并进行适当的调整和优化。
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