stm32f103c8t6-max34865-pt100基于hal库的测温代码

以下是基于HAL库的STM32F103C8T6与MAX34865和PT100传感器的测温代码示例：

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

#define RS485_DE_Pin GPIO_PIN_2
#define RS485_DE_GPIO_Port GPIOB

UART_HandleTypeDef huart1;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_USART1_UART_Init();

  char buffer[10];
  float temperature = 0.0;

  while (1)
  {
    // 发送读取温度命令
    HAL_GPIO_WritePin(RS485_DE_GPIO_Port, RS485_DE_Pin, GPIO_PIN_SET); // 设置DE使能发送模式
    HAL_UART_Transmit(&huart1, (uint8_t*)"R", 1, HAL_MAX_DELAY);

    // 接收温度数据
    HAL_GPIO_WritePin(RS485_DE_GPIO_Port, RS485_DE_Pin, GPIO_PIN_RESET); // 设置DE使能接收模式
    HAL_UART_Receive(&huart1, (uint8_t*)buffer, 10, HAL_MAX_DELAY);

    temperature = atof(buffer); // 将接收到的字符串转换为浮点数
    // 进行温度处理或其他操作
  }
}

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.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();
  }
  
  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_USART1_UART_Init(void)
{
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 9600;
  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();
  }
}

static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct;

  __HAL_RCC_GPIOB_CLK_ENABLE();

  GPIO_InitStruct.Pin = RS485_DE_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(RS485_DE_GPIO_Port, &GPIO_InitStruct);
}

这只是一个简单的示例代码，需要根据实际情况进行修改和调整。确保正确连接MAX34865和PT100传感器，并根据需要设置串口的波特率和GPIO引脚。