基于HAL库的stm32f103rct6 MAX6675 .C和.H的完整HAL库程序

以下是基于HAL库的stm32f103rct6和MAX6675的完整程序，包含了对应的.C和.H文件。请注意，此程序仅供参考，具体实现可能需要根据您的硬件和软件环境进行修改。

MAX6675.h

#ifndef __MAX6675_H
#define __MAX6675_H

#include "stm32f1xx_hal.h"

#define CS_PORT GPIOA
#define CS_PIN GPIO_PIN_1

#define SCK_PORT GPIOA
#define SCK_PIN GPIO_PIN_5

#define SO_PORT GPIOA
#define SO_PIN GPIO_PIN_6

void MAX6675_Init(void);
float MAX6675_Read_Temperature(void);

#endif

MAX6675.c

#include "MAX6675.h"

/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi1;

/* Private function prototypes -----------------------------------------------*/
void MAX6675_SPI_Init(void);

void MAX6675_Init(void)
{
  MAX6675_SPI_Init();

  HAL_GPIO_WritePin(CS_PORT, CS_PIN, GPIO_PIN_SET);
}

float MAX6675_Read_Temperature(void)
{
  uint8_t i;
  uint8_t buffer[2];
  uint16_t value;

  HAL_GPIO_WritePin(CS_PORT, CS_PIN, GPIO_PIN_RESET);

  HAL_SPI_Receive(&hspi1, buffer, 2, HAL_MAX_DELAY);

  HAL_GPIO_WritePin(CS_PORT, CS_PIN, GPIO_PIN_SET);

  value = ((uint16_t)buffer[0] << 8) | buffer[1];

  if (value & 0x4)
  {
    return -1000.0f;
  }

  value >>= 3;

  return (float)value * 0.25f;
}

void MAX6675_SPI_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* SPI1 GPIO Configuration */
  /* PA5     ------> SPI1_SCK */
  /* PA6     ------> SPI1_MISO */
  /* PA7     ------> SPI1_MOSI */
  GPIO_InitStruct.Pin = SCK_PIN | SO_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = CS_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(CS_PORT, &GPIO_InitStruct);

  __HAL_RCC_SPI1_CLK_ENABLE();

  hspi1.Instance = SPI1;
  hspi1.Init.Mode = SPI_MODE_0;
  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);
}

main.c

#include "main.h"
#include "MAX6675.h"
#include <stdio.h>

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI1_Init(void);

int main(void)
{
  float temperature;

  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();
  MX_SPI1_Init();

  MAX6675_Init();

  while (1)
  {
    temperature = MAX6675_Read_Temperature();

    if (temperature == -1000.0f)
    {
      printf("Thermocouple is not connected!\r\n");
    }
    else
    {
      printf("Temperature: %.2f C\r\n", temperature);
    }

    HAL_Delay(1000);
  }
}

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

  /** 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_DIV1;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  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.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

static void MX_SPI1_Init(void)
{
  /* SPI1 parameter configuration*/
  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;
  if (HAL_SPI_Init(&hspi1) != HAL_OK)
  {
    Error_Handler();
  }
}

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

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

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(CS_PORT, CS_PIN, GPIO_PIN_SET);

  /*Configure GPIO pin : CS_Pin */
  GPIO_InitStruct.Pin = CS_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(CS_PORT, &GPIO_InitStruct);
}