STM32入门教程：智能床垫

 #include "stm32f1xx_hal.h"

    
 #include "hx711.h"
    
 #include <stdio.h>
    
  
    
 // 定义HX711引脚
    
 #define HX711_DOUT_Pin GPIO_PIN_8
    
 #define HX711_DOUT_GPIO_Port GPIOA
    
 #define HX711_SCK_Pin GPIO_PIN_9
    
 #define HX711_SCK_GPIO_Port GPIOA
    
  
    
 // 初始化HX711
    
 HX711 hx711;
    
  
    
 // 主函数
    
 int main(void)
    
 {
    
     // 初始化STM32 HAL库
    
     HAL_Init();
    
  
    
     // 初始化STM32时钟
    
     SystemClock_Config();
    
  
    
     // 初始化HX711
    
     HX711_Init(&hx711, HX711_DOUT_GPIO_Port, HX711_DOUT_Pin, HX711_SCK_GPIO_Port, HX711_SCK_Pin);
    
  
    
     // 读取重量数据
    
     int32_t weight = HX711_Read(&hx711);
    
  
    
     // 打印重量数据
    
     printf("Weight: %dg\n", weight);
    
  
    
     while (1)
    
     {
    
     }
    
 }
    
  
    
 // 系统时钟配置函数
    
 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_HSI | RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_HSE;
    
     RCC_OscInitStruct.HSEState = RCC_HSE_ON;
    
     RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    
     RCC_OscInitStruct.HSICalibrationValue = 16;
    
     RCC_OscInitStruct.LSIState = RCC_LSI_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.PLLDIV = RCC_PLL_DIV3;
    
  
    
     if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    
     {
    
     _Error_Handler(__FILE__, __LINE__);
    
     }
    
  
    
     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(__FILE__, __LINE__);
    
     }
    
  
    
     HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq() / 1000);
    
  
    
     HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
    
  
    
     HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
    
 }
    
    
    
    
    代码解读