AD7606 STM32F103 hal dma 代码

以下是AD7606 STM32F103 HAL DMA代码的示例： ```c #include "stm32f1xx_hal.h" #include "main.h" /* AD7606相关定义 */ #define AD7606_CLK_GPIO_Port GPIOA #define AD7606_CLK_Pin GPIO_PIN_5 #define AD7606_nCS_GPIO_Port GPIOA #define AD7606_nCS_Pin GPIO_PIN_6 #define AD7606_BUSY_GPIO_Port GPIOA #define AD7606_BUSY_Pin GPIO_PIN_7 #define AD7606_RDY_GPIO_Port GPIOB #define AD7606_RDY_Pin GPIO_PIN_0 #define AD7606_D0_GPIO_Port GPIOB #define AD7606_D0_Pin GPIO_PIN_1 #define AD7606_D1_GPIO_Port GPIOB #define AD7606_D1_Pin GPIO_PIN_2 #define AD7606_D2_GPIO_Port GPIOB #define AD7606_D2_Pin GPIO_PIN_10 #define AD7606_D3_GPIO_Port GPIOB #define AD7606_D3_Pin GPIO_PIN_11 #define AD7606_D4_GPIO_Port GPIOB #define AD7606_D4_Pin GPIO_PIN_12 #define AD7606_D5_GPIO_Port GPIOB #define AD7606_D5_Pin GPIO_PIN_13 #define AD7606_D6_GPIO_Port GPIOB #define AD7606_D6_Pin GPIO_PIN_14 #define AD7606_D7_GPIO_Port GPIOB #define AD7606_D7_Pin GPIO_PIN_15 /* DMA相关定义 */ #define ADC_DMA DMA1 #define ADC_DMA_STREAM DMA1_Channel1 #define ADC_DMA_IRQn DMA1_Channel1_IRQn /* AD7606读取数据缓冲区大小 */ #define AD7606_BUFFER_SIZE 8192 /* AD7606 DMA读取数据缓冲区 */ uint16_t ad7606_buffer[AD7606_BUFFER_SIZE]; /* AD7606读取数据缓冲区计数器 */ uint32_t ad7606_buffer_count = 0; /* AD7606 DMA传输完成标志 */ volatile uint8_t ad7606_dma_complete = 0; /* AD7606 DMA传输完成回调函数 */ void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc) { ad7606_buffer_count += AD7606_BUFFER_SIZE; if (ad7606_buffer_count >= AD7606_BUFFER_SIZE) { ad7606_dma_complete = 1; } } /* AD7606初始化 */ void ad7606_init(void) { /* GPIO初始化 */ GPIO_InitTypeDef GPIO_InitStruct; GPIO_InitStruct.Pin = AD7606_CLK_Pin | AD7606_nCS_Pin | AD7606_BUSY_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); GPIO_InitStruct.Pin = AD7606_RDY_Pin | AD7606_D0_Pin | AD7606_D1_Pin | AD7606_D2_Pin | AD7606_D3_Pin | AD7606_D4_Pin | AD7606_D5_Pin | AD7606_D6_Pin | AD7606_D7_Pin; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_PULLUP; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* DMA初始化 */ __HAL_RCC_DMA1_CLK_ENABLE(); HAL_NVIC_SetPriority(ADC_DMA_IRQn, 0, 0); HAL_NVIC_EnableIRQ(ADC_DMA_IRQn); } /* AD7606 DMA传输 */ void ad7606_dma_read(uint16_t* data, uint32_t count) { /* DMA传输结束标志 */ ad7606_dma_complete = 0; /* ADC初始化 */ ADC_HandleTypeDef hadc; hadc.Instance = ADC1; hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc.Init.ContinuousConvMode = ENABLE; hadc.Init.NbrOfConversion = 1; hadc.Init.DiscontinuousConvMode = DISABLE; hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; hadc.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4; hadc.Init.Resolution = ADC_RESOLUTION_12B; hadc.Init.DMAContinuousRequests = ENABLE; hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV; HAL_ADC_Init(&hadc); /* ADC通道配置 */ ADC_ChannelConfTypeDef sConfig; sConfig.Channel = ADC_CHANNEL_0; sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; HAL_ADC_ConfigChannel(&hadc, &sConfig); /* DMA初始化 */ ADC_DMA_STREAM->CCR &= ~DMA_SxCR_EN; ADC_DMA_STREAM->CNDTR = count; ADC_DMA_STREAM->CPAR = (uint32_t)&ADC1->DR; ADC_DMA_STREAM->CMAR = (uint32_t)data; ADC_DMA_STREAM->CCR &= ~DMA_SxCR_CHSEL_Msk; ADC_DMA_STREAM->CCR |= (uint32_t)DMA_CHANNEL_0 << DMA_SxCR_CHSEL_Pos; ADC_DMA_STREAM->CCR &= ~(DMA_SxCR_DIR | DMA_SxCR_PINC | DMA_SxCR_MINC | DMA_SxCR_PSIZE | DMA_SxCR_MSIZE | DMA_SxCR_PL | DMA_SxCR_M2M); ADC_DMA_STREAM->CCR |= DMA_SxCR_MINC | DMA_SxCR_CIRC | DMA_SxCR_PSIZE_HALF | DMA_SxCR_MSIZE_HALF | DMA_SxCR_PL_VERY_HIGH | DMA_SxCR_TCIE; ADC_DMA_STREAM->CCR |= DMA_SxCR_EN; /* 启动ADC转换 */ HAL_ADC_Start(&hadc); } int main(void) { HAL_Init(); ad7606_init(); /* 等待AD7606准备好 */ while (HAL_GPIO_ReadPin(AD7606_BUSY_GPIO_Port, AD7606_BUSY_Pin) != GPIO_PIN_SET); /* 读取AD7606数据 */ uint32_t count = 0; while (count < 65536) { ad7606_dma_read(ad7606_buffer + count, AD7606_BUFFER_SIZE); count += AD7606_BUFFER_SIZE; while (!ad7606_dma_complete); } /* 停止ADC转换 */ HAL_ADC_Stop(&hadc); while (1) { } } /* DMA传输完成中断 */ void ADC_DMA_IRQHandler(void) { HAL_DMA_IRQHandler(&hdma_adc); } ``` 这是一个简单的示例代码，适用于使用STM32F103芯片和HAL库的AD7606应用。具体的GPIO引脚和DMA配置取决于你的硬件连接和需求。请根据实际情况进行修改。