HAL STM32 HW I2C DMA + SSD1306/SH1106驱动示例
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、6X12、8X16，三种。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);elseOLED_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);elseOLED_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);elseOLED_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);elseOLED_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
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🌿开启硬件硬件I2C：
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🌿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
🔖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。