stm32f030 hal spi

以下是使用STM32F030R8Tx HAL库进行SPI通信的示例代码：

#include "stm32f0xx_hal.h"

/* SPI handler declaration */
SPI_HandleTypeDef SpiHandle;

/* SPI init function */
void SPI_Init(void)
{
  /* SPI Config */
  SpiHandle.Instance               = SPI1;
  SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
  SpiHandle.Init.Direction         = SPI_DIRECTION_2LINES;
  SpiHandle.Init.CLKPhase          = SPI_PHASE_2EDGE;
  SpiHandle.Init.CLKPolarity       = SPI_POLARITY_HIGH;
  SpiHandle.Init.CRCCalculation    = SPI_CRCCALCULATION_DISABLE;
  SpiHandle.Init.CRCPolynomial     = 7;
  SpiHandle.Init.DataSize          = SPI_DATASIZE_8BIT;
  SpiHandle.Init.FirstBit          = SPI_FIRSTBIT_MSB;
  SpiHandle.Init.NSS               = SPI_NSS_SOFT;
  SpiHandle.Init.TIMode            = SPI_TIMODE_DISABLE;
  SpiHandle.Init.Mode              = SPI_MODE_MASTER;

  if(HAL_SPI_Init(&SpiHandle) != HAL_OK)
  {
    /* Initialization Error */
    Error_Handler();
  }
}

/* SPI MSP Init */
void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi)
{
  GPIO_InitTypeDef  GPIO_InitStruct;

  /*##-1- Enable peripherals and GPIO Clocks #################################*/
  /* Enable GPIO TX/RX clock */
  SPIx_SCK_GPIO_CLK_ENABLE();
  SPIx_MISO_GPIO_CLK_ENABLE();
  SPIx_MOSI_GPIO_CLK_ENABLE();
  /* Enable SPI clock */
  SPIx_CLK_ENABLE();

  /*##-2- Configure peripheral GPIO ##########################################*/
  /* SPI SCK GPIO pin configuration  */
  GPIO_InitStruct.Pin       = SPIx_SCK_PIN;
  GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull      = GPIO_PULLUP;
  GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = SPIx_SCK_AF;

  HAL_GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStruct);

  /* SPI MISO GPIO pin configuration  */
  GPIO_InitStruct.Pin = SPIx_MISO_PIN;
  GPIO_InitStruct.Alternate = SPIx_MISO_AF;

  HAL_GPIO_Init(SPIx_MISO_GPIO_PORT, &GPIO_InitStruct);

  /* SPI MOSI GPIO pin configuration  */
  GPIO_InitStruct.Pin = SPIx_MOSI_PIN;
  GPIO_InitStruct.Alternate = SPIx_MOSI_AF;

  HAL_GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStruct);
}

/* SPI MSP DeInit */
void HAL_SPI_MspDeInit(SPI_HandleTypeDef *hspi)
{
  /*##-1- Reset peripherals ##################################################*/
  SPIx_FORCE_RESET();
  SPIx_RELEASE_RESET();

  /*##-2- Disable peripherals and GPIO Clocks ################################*/
  /* Configure SPI SCK as alternate function  */
  HAL_GPIO_DeInit(SPIx_SCK_GPIO_PORT, SPIx_SCK_PIN);
  /* Configure SPI MISO as alternate function  */
  HAL_GPIO_DeInit(SPIx_MISO_GPIO_PORT, SPIx_MISO_PIN);
  /* Configure SPI MOSI as alternate function  */
  HAL_GPIO_DeInit(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_PIN);
}

int main(void)
{
  uint8_t txData[2] = {0x01, 0x02};
  uint8_t rxData[2];

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* Configure the system clock */
  SystemClock_Config();

  /* Initialize all configured peripherals */
  SPI_Init();

  /* Infinite loop */
  while (1)
  {
    /* Transmit data */
    HAL_SPI_Transmit(&SpiHandle, txData, 2, 1000);

    /* Receive data */
    HAL_SPI_Receive(&SpiHandle, rxData, 2, 1000);
  }
}

在这个例子中，我们使用了STM32F030R8Tx HAL库来初始化SPI1，并使用HAL_SPI_Transmit和HAL_SPI_Receive函数来发送和接收数据。在使用这些函数之前，我们需要先定义一个SPI_HandleTypeDef结构体，并使用HAL_SPI_Init函数来初始化SPI。