stm32f103c8t6外接Dac8563通过stm32cubeide正弦波代码

要在STM32F103C8T6微控制器和外接的DAC8563芯片上生成正弦波，您可以使用SPI总线来与DAC8563进行通信。以下是一个使用STM32CubeIDE生成正弦波的示例代码：

#include "main.h"
#include "stm32f1xx_hal.h"
#include "math.h"

#define DAC_RESOLUTION 65535 // DAC 分辨率
#define DAC_OUTPUT_VOLTAGE 5.0 // DAC 输出电压

SPI_HandleTypeDef hspi1;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI1_Init(void);

void DAC8563_Write(uint16_t value)
{
  uint8_t txData[3];
  
  txData[0] = 0x38; // 写入DAC A寄存器地址
  txData[1] = (value >> 8) & 0xFF;
  txData[2] = value & 0xFF;
  
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_RESET); // 使能片选
  HAL_SPI_Transmit(&hspi1, txData, sizeof(txData), HAL_MAX_DELAY); // 发送数据
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_SET); // 禁用片选
}

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_SPI1_Init();

  while (1)
  {
    // 生成正弦波
    for (uint16_t i = 0; i < DAC_RESOLUTION; i++)
    {
      double angle = 2 * M_PI * i / DAC_RESOLUTION;
      uint16_t value = (DAC_OUTPUT_VOLTAGE / 2) * (sin(angle) + 1); // 计算DAC输出值
      DAC8563_Write(value);
      HAL_Delay(1); // 控制正弦波的频率
    }
  }
}

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
  HAL_RCC_OscConfig(&RCC_OscInitStruct);
  
  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_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
  
  __HAL_RCC_AFIO_CLK_ENABLE();
}

static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct;
  
  __HAL_RCC_GPIOA_CLK_ENABLE();
  
  GPIO_InitStruct.Pin = GPIO_PIN_4;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

static void MX_SPI1_Init(void)
{
  hspi1.Instance = SPI1;
  hspi1.Init.Mode = SPI_MODE_MASTER;
  hspi1.Init.Direction = SPI_DIRECTION_2LINES;
  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi1.Init.NSS = SPI_NSS_SOFT;
  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi1.Init.CRCPolynomial = 10;
  HAL_SPI_Init(&hspi1);
}

在此示例中，我们使用SPI1和GPIOA的引脚4来与DAC8563进行通信。代码中的`DAC8563_Write`函数用于将数据发送给DAC8563。请注意，您需要根据实际的硬件连接和引脚分配进行适当的修改。

此代码通过计算每个时刻的正弦波值，并将其发送到DAC8563以生成正弦波。您可以根据需要调整DAC_OUTPUT_VOLTAGE和DAC_RESOLUTION的值来控制输出电压和DAC的分辨率。确保在STM32CubeIDE中正确配置SPI和GPIO引脚。