HAL STM32 HW I2C DMA + SSD1306/SH1106驱动示例

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• 📍硬件I2C DMA驱动参考：https://blog.csdn.net/weixin_45065888/article/details/118225993

• 🔖本工程基于STM32F103VCT6，驱动程序独立，可以移植到任意STM32型号上使用。

📑字体大小说明

• 🌿该驱动程序ASCII字符集类型大小包含：6X8、8X16，12X6 三种。其中6X8和8X16共用一个API函数调用，形参不同。

//针对F6x8、F8X16字体
void OLED_show_char2(uint8_t row, uint8_t col, uint8_t chr, uint8_t size)
{
    uint8_t x ;
    uint8_t y;
    if(size == 8){
		x = col * 6;
        y = row * 8;
		}
    else {
		x = col * 8;
        y = row * 16;		
		}
    uint8_t temp, t, t1;
    uint8_t y0 = y;
    chr = chr - ' ';
    if(size == 16) {
           for(t = 0; t < 8; t++) {
            temp = F8X16[chr*16+t];
            for(t1 = 0; t1 < 8; t1++) {
                if(temp & 0x01)
                    OLED_draw_point(x, y, PEN_WRITE);
                else
                    OLED_draw_point(x, y, PEN_CLEAR);

                temp >>= 1;
                y++;
                if((y - y0) == 8) {
                    y = y0;
                    x++;
                    break;
                }
            }
					}
						for(t = 0; t < 8; t++) {
            temp = F8X16[chr*16+t+8];
            for(t1 = 0; t1 < 8; t1++) {
                if(temp & 0x01)
                    OLED_draw_point(x-8, y+8, PEN_WRITE);
                else
                    OLED_draw_point(x-8, y+8, PEN_CLEAR);

                temp >>= 1;
                y++;
                if((y - y0) == 8) {
                    y = y0;
                    x++;
                    break;
                }
            }
					} 
    
    } else {

        for(t = 0; t < 6; t++) {
            temp = F6x8[chr][t];
            for(t1 = 0; t1 < 8; t1++) {
                if(temp & 0x01)
                    OLED_draw_point(x, y, PEN_WRITE);
                else
                    OLED_draw_point(x, y, PEN_CLEAR);

                temp >>= 1;
                y++;
                if((y - y0) == 8) {
                    y = y0;
                    x++;
                    break;
                }
            }
        }

    }
}
//6X12字体
void OLED_show_char(uint8_t row, uint8_t col, uint8_t chr)
{

    uint8_t x = col * 6;
    uint8_t y = row * 12;
    uint8_t temp, t, t1;
    uint8_t y0 = y;
    chr = chr - ' ';

    for(t = 0; t < 12; t++) {
        temp = asc2_1206[chr][t];

        for(t1 = 0; t1 < 8; t1++) {
            if(temp & 0x80)
                OLED_draw_point(x, y, PEN_WRITE);
            else
                OLED_draw_point(x, y, PEN_CLEAR);

            temp <<= 1;
            y++;
            if((y - y0) == 12) {
                y = y0;
                x++;
                break;
            }
        }
    }
}

🛠 0.96" SSD1306和1.3" SH1106切换，代码调整

void OLED_set_pos(uint8_t x, uint8_t y)
{
    OLED_CMDbuf[y][0] = 0x00;
    OLED_CMDbuf[y][1] = 0xb0 + y;
    OLED_CMDbuf[y][2] = 0x10;
	OLED_CMDbuf[y][3] = 0x00; //ssd1306:0x00;sh1106:0x02

}

🔨STM32CubeMX配置

• 🌿开启硬件硬件I2C：
  

• 🌿勾选I2C DMA 发送数据（TX）：

• 🌿中断（NVIC）列表勾选I2C1 event interrupt,优先级配置，根据个人使用环境配置。
  

📝测试代码

int main(void)
{
    /* USER CODE BEGIN 1 */
//    float num = 3.14;
    /* USER CODE END 1 */

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

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

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

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

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_DMA_Init();
    MX_I2C1_Init();
    MX_USART1_UART_Init();
    /* USER CODE BEGIN 2 */

    OLED_init(); //OLED初始化
    OLED_operate_gram(PEN_CLEAR);//清缓存

    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while(1) {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
        OLED_operate_gram(PEN_CLEAR);//清缓存
        OLED_showString(0, 2, (uint8_t*)"China Loong",16);
        OLED_show_string(2, 3, (uint8_t*)"perseverance");

        OLED_refresh_gram();//全局刷新
        HAL_Delay(1500);
        OLED_operate_gram(PEN_CLEAR);//清缓存
        OLED_show_string(3, 3, (uint8_t*)"Hello World");
        OLED_show_string(4, 3, (uint8_t*)"DISPLAY China");
        OLED_refresh_gram();//全局刷新
        HAL_Delay(1500);

		

    }
    /* USER CODE END 3 */
}

📚测试例程

链接：https://pan.baidu.com/s/1jkwfS7BmxVZHrDrhvrBWJw?pwd=h6s3 
提取码：h6s3

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🔖此文章仅作为个人学习探索知识的总结，不作为他人或引用者的理论依据，由于学识所限，难免会出现错误或纰漏，欢迎大家指正。