三分钟快速使用U8g2库驱动OLED 模组为SSD1306

发布于 2022-03-22 12:17:32 浏览：2362 订阅该版

#新建项目
![image.png](https://oss-club.rt-thread.org/uploads/20220322/153de5f503e46772080a9c38e105d1e4.png.webp)
#添加软件包
![image.png](https://oss-club.rt-thread.org/uploads/20220322/0456386c216293396a93f6dcb5a4fbbe.png.webp)
#添加示例代码
在软件包配置里面开启example 4 sw spi 后没有自动添加软件包，在github文件夹下找到模板，复制到IDE中。
https://github.com/olikraus/u8g2 github链接
![image.png](https://oss-club.rt-thread.org/uploads/20220322/fa32e47e67a70f15832e94d9b14637b0.png.webp)
根据自己的硬件进行修改。
```
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include <u8g2_port.h>
#include <drv_common.h>

// You may reference Drivers/drv_gpio.c for pinout
// In u8x8.h #define U8X8_USE_PINS

#define OLED_SPI_PIN_CLK                    GET_PIN(B,10)  // PB10
#define OLED_SPI_PIN_MOSI                   GET_PIN(B,15)  // PB15
#define OLED_SPI_PIN_RES                    GET_PIN(C,5)  // PC5
#define OLED_SPI_PIN_DC                     GET_PIN(C,4)  // PC4
#define OLED_SPI_PIN_CS                     GET_PIN(A,8)  // PI0

static void u8g2_ssd1306_12864_4wire_sw_spi_example(int argc,char *argv[])
{
    u8g2_t u8g2;

// Initialization
    u8g2_Setup_ssd1306_128x64_noname_f( &u8g2, U8G2_R0, u8x8_byte_4wire_sw_spi, u8x8_gpio_and_delay_rtthread);
    u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_SPI_CLOCK, OLED_SPI_PIN_CLK);
    u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_SPI_DATA, OLED_SPI_PIN_MOSI);
    u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_CS, OLED_SPI_PIN_CS);
    u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_DC, OLED_SPI_PIN_DC);
    u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_RESET, OLED_SPI_PIN_RES);

u8g2_InitDisplay(&u8g2);
    u8g2_SetPowerSave(&u8g2, 0);

// Draw Graphics
    /* full buffer example, setup procedure ends in _f */
    u8g2_ClearBuffer(&u8g2);
    u8g2_SetFont(&u8g2, u8g2_font_ncenB08_tr);
    u8g2_DrawStr(&u8g2, 1, 18, "U8g2 on RT-Thread");
    u8g2_SendBuffer(&u8g2);

u8g2_SetFont(&u8g2, u8g2_font_unifont_t_symbols);
    u8g2_DrawGlyph(&u8g2, 112, 56, 0x2603 );
    u8g2_SendBuffer(&u8g2);
}
MSH_CMD_EXPORT(u8g2_ssd1306_12864_4wire_sw_spi_example, sw 4wire spi ssd1306 sample);
这里输入代码
```
#编译代码，下载到硬件
在finsh终端内找到启动命令，输入开启OLED显示
![image.png](https://oss-club.rt-thread.org/uploads/20220322/3c5b45a8883b8a2c99a002fdd4477d2b.png)
![image.png](https://oss-club.rt-thread.org/uploads/20220322/dd7234d1f7fcb1152c2f46d37a0d5a3c.jpg.webp)