| 本帖最后由 meiyaolei 于 2025-5-26 19:34 编辑 
 使用NUCLEO-C092RC开发板驱动SSD1306 OLED显示屏,通过I2C或SPI接口实现,以下为关键步骤和代码示例:
 
 硬件
 引脚对应关系(I2C接口示例)
 SCL → STM32C092的I2C时钟引脚PB8对应I2C1_SCL
 SDA → STM32C092的I2C数据引脚PB9对应I2C1_SDA
 VCC → 5V
 GND → 地
 SSD1306的I2C地址通常为0x3C(部分型号为0x3D),实际代码中是用的0x78。
 
 硬件准备
 I2C上拉电阻:SCL和SDA需接4.7kΩ外部上拉电阻。
 
 
 原理图
 
   
 软件配置
 使用STM32CubeMX配置进行IIC配置,把IIC配置成快速模式(Fast Mode),快速模式的最大数据传输速率为400 kbps.
 
 
   代码:
 
 主函数代码:
 显示效果/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * [url=home.php?mod=space&uid=288409]@file[/url]           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "i2c.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "oled/oled.h"  // 包含OLED显示库的头文件
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
  /* USER CODE END 1 */
  /* MCU Configuration--------------------------------------------------------*/
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();  // 初始化HAL库
  /* USER CODE BEGIN Init */
  /* USER CODE END Init */
  /* Configure the system clock */
  SystemClock_Config();  // 配置系统时钟
  /* USER CODE BEGIN SysInit */
  /* USER CODE END SysInit */
  /* Initialize all configured peripherals */
  MX_GPIO_Init();  // 初始化GPIO
  MX_USART2_UART_Init();  // 初始化USART2
  MX_I2C1_Init();  // 初始化I2C1
  /* USER CODE BEGIN 2 */
        
        OLED_Init();  // 初始化OLED显示屏
        OLED_Fill(0x00);  // 清空OLED屏幕
        OLED_ShowStr(0,0,"STM32C092 BOARD",2);  // 在OLED的第0行显示字符串
        OLED_ShowStr(0,4,"I2C OLED TEST",2);  // 在OLED的第2行显示字符串
        //HAL_Delay(500);
        OLED_ShowStr(0,2,"bbs.21ic.com",2);  // 在OLED的第4行显示字符串
        OLED_ShowStr(0,6,"2025-05-25",2);  // 在OLED的第6行显示字符串
  /* USER CODE END 2 */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  __HAL_FLASH_SET_LATENCY(FLASH_LATENCY_1);  // 设置Flash延迟
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;  // 使用外部高速时钟(HSE)
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;  // 开启HSE
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();  // 错误处理
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;  // 系统时钟源为HSE
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;  // 系统时钟不分频
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;  // AHB总线时钟不分频
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;  // APB1总线时钟不分频
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();  // 错误处理
  }
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();  // 禁用中断
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}
#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
     
 
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