STM32H750使用keil生成工程用来测量正弦波的频率和峰峰值，并输出到宽口屏中

好的，下面是具体步骤：

1. 首先，需要在Keil中创建一个STM32H750工程，选择正确的芯片型号和开发板，配置好相应的时钟和外设。

2. 接着，需要在工程中添加用于测量正弦波的频率和峰峰值的代码。可以使用STM32的定时器和捕获比较单元（TIMx和CCRx）来实现。

3. 在代码中，可以使用中断来触发捕获比较单元，以便测量正弦波的频率和峰峰值。

4. 最后，利用STM32H750的DMA功能，将测量得到的频率和峰峰值数据传输到宽口屏中进行显示。

需要注意的是，开发过程中需要根据具体的硬件环境进行调试和优化。

相关问题

STM32H750使用keil生成工程用来测量正弦波的频率和峰峰值，并输出到串口屏中

以下是基于Keil的STM32H750工程代码示例，实现测量正弦波的频率和峰峰值，并输出到串口屏中：

首先需要配置MCU的时钟，这里使用HSI时钟，时钟频率为64MHz：

RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 1;
RCC_OscInitStruct.PLL.PLLN = 64;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
    Error_Handler();
}

PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART1;
PeriphClkInitStruct.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
{
    Error_Handler();
}

RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                          |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
{
    Error_Handler();
}

然后需要配置串口，这里使用USART1，波特率为115200：

UART_HandleTypeDef huart1;

huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
    Error_Handler();
}

接下来是测量正弦波的部分，这里使用TIM2和ADC1：

#define ADC_BUFFER_SIZE 2048
#define PWM_FREQUENCY   1000

uint32_t adc_buffer[ADC_BUFFER_SIZE];
volatile uint32_t adc_buffer_index = 0;
volatile uint32_t adc_buffer_half_full = 0;
float frequency = 0;
float peak_to_peak = 0;

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
    if (htim->Instance == TIM2)
    {
        HAL_ADC_Start_IT(&hadc1);
    }
}

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc)
{
    if (hadc->Instance == ADC1)
    {
        adc_buffer[adc_buffer_index++] = HAL_ADC_GetValue(hadc);

        if (adc_buffer_index == ADC_BUFFER_SIZE)
        {
            adc_buffer_index = 0;
            adc_buffer_half_full = 1;
        }
    }
}

void measure_frequency_and_peak_to_peak()
{
    uint32_t i = 0;
    float sum = 0;
    float max = 0;
    float min = 4096;

    HAL_TIM_Base_Start_IT(&htim2);
    HAL_ADC_Start_IT(&hadc1);

    while (adc_buffer_half_full == 0);

    HAL_TIM_Base_Stop_IT(&htim2);

    for (i = 0; i < ADC_BUFFER_SIZE; i++)
    {
        sum += adc_buffer[i];

        if (adc_buffer[i] > max)
        {
            max = adc_buffer[i];
        }

        if (adc_buffer[i] < min)
        {
            min = adc_buffer[i];
        }
    }

    frequency = ((float)HAL_RCC_GetHCLKFreq() / (PWM_FREQUENCY * ADC_BUFFER_SIZE)) * 2;
    peak_to_peak = ((float)(max - min) / 4096) * 3.3;
}

最后是输出到串口屏的部分，这里使用HAL库提供的UART发送函数，发送频率和峰峰值的值：

char message[64];

sprintf(message, "Frequency: %.2fHz\r\n", frequency);
HAL_UART_Transmit(&huart1, message, strlen(message), HAL_MAX_DELAY);

sprintf(message, "Peak-to-peak: %.2fV\r\n", peak_to_peak);
HAL_UART_Transmit(&huart1, message, strlen(message), HAL_MAX_DELAY);

完整的代码示例可以参考以下链接：https://github.com/Keenster/stm32h750-measure-sine-wave-frequency-and-peak-to-peak-value

STM32H750使用keil生成工程用来测量正弦波的频率和峰峰值

好的，下面是关于如何使用Keil生成STM32H750工程，并测量正弦波频率和峰峰值的步骤：

1. 打开Keil软件，选择File -> New Project，选择STM32H750B8Tx设备，选择对应的芯片型号，选择工程的存储位置。

2. 在Project中右击，选择Options for Target，在C/C++选项卡中，勾选Include Paths和Define Symbols，将芯片的头文件路径和相关宏定义添加进去。

3. 在Project中右击，选择Add New Item，添加一个.c文件，命名为main.c。

4. 在main.c中编写代码，包括初始化时钟、GPIO口、ADC和定时器等模块，开启ADC采样和定时器中断等操作。具体代码可以参考以下示例：

#include "stm32h7xx.h"

#define ADC_CHANNEL 0
#define ADC_BUF_LEN 1000

volatile uint32_t adc_buf[ADC_BUF_LEN];
volatile uint32_t adc_idx = 0;

void SystemClock_Config(void);
void MX_GPIO_Init(void);
void MX_ADC1_Init(void);
void MX_TIM6_Init(void);
void MX_NVIC_Init(void);

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_ADC1_Init();
  MX_TIM6_Init();
  MX_NVIC_Init();

  HAL_TIM_Base_Start_IT(&htim6);
  HAL_ADC_Start_DMA(&hadc1, (uint32_t *)adc_buf, ADC_BUF_LEN);

  while (1)
  {
    // 等待中断处理采样数据
  }
}

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Supply configuration update enable */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
  /** Configure the main internal regulator output voltage */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV2;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 5;
  RCC_OscInitStruct.PLL.PLLN = 200;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_1;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
  {
    Error_Handler();
  }
}

void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin : PA5 */
  GPIO_InitStruct.Pin = GPIO_PIN_5;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

void MX_ADC1_Init(void)
{
  ADC_ChannelConfTypeDef sConfig = {0};

  /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.ScanConvMode = DISABLE;
  hadc1.Init.ContinuousConvMode = ENABLE;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.NbrOfConversion = 1;
  hadc1.Init.DMAContinuousRequests = ENABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.
  */
  sConfig.Channel = ADC_CHANNEL_0;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
}

void MX_TIM6_Init(void)
{
  TIM_MasterConfigTypeDef sMasterConfig = {0};

  htim6.Instance = TIM6;
  htim6.Init.Prescaler = 199;
  htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim6.Init.Period = 999;
  htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
}

void MX_NVIC_Init(void)
{
  /* TIM6_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(TIM6_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(TIM6_IRQn);

  /* ADC_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(ADC_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(ADC_IRQn);
}

void TIM6_IRQHandler(void)
{
  HAL_TIM_IRQHandler(&htim6);
}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
  if (htim->Instance == TIM6)
  {
    adc_idx = 0;
  }
}

void ADC_IRQHandler(void)
{
  HAL_ADC_IRQHandler(&hadc1);
}

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
  if (hadc->Instance == ADC1)
  {
    uint32_t sum = 0;
    for (int i = 0; i < ADC_BUF_LEN; i++)
    {
      sum += adc_buf[i];
    }
    float vavg = (float)sum / (float)ADC_BUF_LEN * 3.3 / 4096.0;
    float vmax = 0.0;
    for (int i = 0; i < ADC_BUF_LEN; i++)
    {
      float v = (float)adc_buf[i] * 3.3 / 4096.0;
      if (v > vmax) vmax = v;
    }
    // 计算正弦波的频率和峰峰值
  }
}

5. 在main.c中，采用DMA的方式进行ADC采样，将采样数据存入缓冲区，并在定时器中断中对缓冲区数据进行处理，计算正弦波的频率和峰峰值。具体的计算方法可以参考以下示例：

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
  if (hadc->Instance == ADC1)
  {
    uint32_t sum = 0;
    for (int i = 0; i < ADC_BUF_LEN; i++)
    {
      sum += adc_buf[i];
    }
    float vavg = (float)sum / (float)ADC_BUF_LEN * 3.3 / 4096.0;
    float vmax = 0.0;
    for (int i = 0; i < ADC_BUF_LEN; i++)
    {
      float v = (float)adc_buf[i] * 3.3 / 4096.0;
      if (v > vmax) vmax = v;
    }

    float freq = 0.0;
    float period = 0.0;
    float fmax = 1000.0;
    int idx = 0;
    for (int i = 1; i < ADC_BUF_LEN; i++)
    {
      if (adc_buf[i] > adc_buf[i-1] && adc_buf[i] > adc_buf[i+1])
      {
        if (idx > 0)
        {
          period = (float)(i - idx) / 10000.0;
          freq = 1.0 / period;
          if (freq > fmax) break;
        }
        idx = i;
      }
    }

    printf("Vavg: %fV, Vmax: %fV, Freq: %fHz\n", vavg, vmax, freq);
  }
}

6. 编译工程，下载程序到STM32H750芯片中，连接正弦波信号到ADC输入引脚，运行程序，观察串口输出的结果，即可得到正弦波的频率和峰峰值信息。

注意：在使用ADC采样时，还需要注意采样时钟、采样周期、ADC通道等参数的设置，具体可以根据实际情况进行调整。