STM32—U8g2图形库练习

一、新建CubeMX工程

1.照例将RCC配置为外部高速晶振（精度更高）——HSE；将SYS的Debug设置成Serial Wire（否则可能导致芯片自锁)；
2.配置I2C2作为OLED的通讯方式。

3.TIM1配置：U8g2图形库需要us级延迟推动（U8g2的心跳）。

4.时钟树配置。

5.代码配置。

二、U8g2移植

U8g2库开源网址

进入网站下载源码后，在“csrc”文件里对库文件进行精简，防止内存过大无法运行。
首先是精简u8g2_d_setup.c。本人的OLED是IIC接口，只留一个本次要用到u8g2_Setup_ssd1306_i2c_128x64_noname_f就好（如果是SPI接口，需要使用u8g2_Setup_ssd1306_128x64_noname_f这个函数），其它的可以删掉或注释掉。对u8g2_d_setup.c删减到如下所示。

/* u8g2_d_setup.c */
/* generated code, codebuild, u8g2 project */

#include "u8g2.h"
#include "tim.h"

/* ssd1306 f */
void u8g2_Setup_ssd1306_i2c_128x64_noname_f(u8g2_t *u8g2, const u8g2_cb_t *rotation, u8x8_msg_cb byte_cb, u8x8_msg_cb gpio_and_delay_cb)
{
  uint8_t tile_buf_height;
  uint8_t *buf;
  u8g2_SetupDisplay(u8g2, u8x8_d_ssd1306_128x64_noname, u8x8_cad_ssd13xx_fast_i2c, byte_cb, gpio_and_delay_cb);
  buf = u8g2_m_16_8_f(&tile_buf_height);
  u8g2_SetupBuffer(u8g2, buf, tile_buf_height, u8g2_ll_hvline_vertical_top_lsb, rotation);
}
/* end of generated code */

然后是精简u8g2_d_memory.c。由于用到的u8g2_Setup_ssd1306_i2c_128x64_noname_f函数中，只调用了u8g2_m_16_8_f这个函数，所以留下这个函数，其它的函数一定要删掉或注释掉，否则编译时很可能会提示内存不足。对u8g2_d_memory.c删减到如下所示。

/* u8g2_d_memory.c */
/* generated code, codebuild, u8g2 project */

#include "u8g2.h"

uint8_t *u8g2_m_16_8_f(uint8_t *page_cnt)
{
  #ifdef U8G2_USE_DYNAMIC_ALLOC
  *page_cnt = 8;
  return 0;
  #else
  static uint8_t buf[1024];
  *page_cnt = 8;
  return buf;
  #endif
}

精简完成后，将U8g2库添加至Keil。左侧Keil工程目录添加自己精简后U8g2库文件中的csrc文件，然后再添加U8g2的头文件搜寻目录（U8g2里面都是csrc文件里面的文件，可以根据自己的需要删减），如下所示：

三、代码改写

3.1.编写移植函数

stm32_u8g2.h

#ifndef __STM32_U8G2_H
#define __STM32_U8G2_H
 
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "u8g2.h"
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
 
 
/* USER CODE BEGIN Private defines */
 
/* USER CODE END Private defines */
#define u8         unsigned char  // ?unsigned char ????
#define MAX_LEN    128  //
#define OLED_ADDRESS  0x78 // oled
#define OLED_CMD   0x00  // 
#define OLED_DATA  0x40  // 
 
/* USER CODE BEGIN Prototypes */
uint8_t u8x8_byte_hw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
uint8_t u8x8_gpio_and_delay(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr);
void u8g2Init(u8g2_t *u8g2);
void draw(u8g2_t *u8g2);
void testDrawPixelToFillScreen(u8g2_t *u8g2);
 
#endif

stm32_u8g2.c

#include "stm32_u8g2.h"
#include "tim.h"
#include "i2c.h"
 
 
uint8_t u8x8_byte_hw_i2c(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
    /* u8g2/u8x8 will never send more than 32 bytes between START_TRANSFER and END_TRANSFER */
    static uint8_t buffer[128];
    static uint8_t buf_idx;
    uint8_t *data;
 
    switch (msg)
    {
    case U8X8_MSG_BYTE_INIT:
    {
        /* add your custom code to init i2c subsystem */
        MX_I2C2_Init(); //I2C初始化
    }
    break;
 
    case U8X8_MSG_BYTE_START_TRANSFER:
    {
        buf_idx = 0;
    }
    break;
 
    case U8X8_MSG_BYTE_SEND:
    {
        data = (uint8_t *)arg_ptr;
 
        while (arg_int > 0)
        {
            buffer[buf_idx++] = *data;
            data++;
            arg_int--;
        }
    }
    break;
 
    case U8X8_MSG_BYTE_END_TRANSFER:
    {
        if (HAL_I2C_Master_Transmit(&hi2c2, OLED_ADDRESS, buffer, buf_idx, 1000) != HAL_OK)
            return 0;
    }
    break;
 
    case U8X8_MSG_BYTE_SET_DC:
        break;
 
    default:
        return 0;
    }
 
    return 1;
}
 
 
 
uint8_t u8x8_gpio_and_delay(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
    switch (msg)
    {
    case U8X8_MSG_DELAY_100NANO: // delay arg_int * 100 nano seconds
        __NOP();
        break;
    case U8X8_MSG_DELAY_10MICRO: // delay arg_int * 10 micro seconds
        for (uint16_t n = 0; n < 320; n++)
        {
            __NOP();
        }
        break;
    case U8X8_MSG_DELAY_MILLI: // delay arg_int * 1 milli second
        HAL_Delay(1);
        break;
    case U8X8_MSG_DELAY_I2C: // arg_int is the I2C speed in 100KHz, e.g. 4 = 400 KHz
        Tims_delay_us(5);
        break;                    // arg_int=1: delay by 5us, arg_int = 4: delay by 1.25us
    case U8X8_MSG_GPIO_I2C_CLOCK: // arg_int=0: Output low at I2C clock pin
        break;                    // arg_int=1: Input dir with pullup high for I2C clock pin
    case U8X8_MSG_GPIO_I2C_DATA:  // arg_int=0: Output low at I2C data pin
        break;                    // arg_int=1: Input dir with pullup high for I2C data pin
    case U8X8_MSG_GPIO_MENU_SELECT:
        u8x8_SetGPIOResult(u8x8, /* get menu select pin state */ 0);
        break;
    case U8X8_MSG_GPIO_MENU_NEXT:
        u8x8_SetGPIOResult(u8x8, /* get menu next pin state */ 0);
        break;
    case U8X8_MSG_GPIO_MENU_PREV:
        u8x8_SetGPIOResult(u8x8, /* get menu prev pin state */ 0);
        break;
    case U8X8_MSG_GPIO_MENU_HOME:
        u8x8_SetGPIOResult(u8x8, /* get menu home pin state */ 0);
        break;
    default:
        u8x8_SetGPIOResult(u8x8, 1); // default return value
        break;
    }
    return 1;
}
 
//U8g2的初始化，需要调用下面这个u8g2_Setup_ssd1306_128x64_noname_f函数，该函数的4个参数含义：
//u8g2：传入的U8g2结构体
//U8G2_R0：默认使用U8G2_R0即可（用于配置屏幕是否要旋转）
//u8x8_byte_sw_i2c：使用软件IIC驱动，该函数由U8g2源码提供
//u8x8_gpio_and_delay：就是上面我们写的配置函数
 
void u8g2Init(u8g2_t *u8g2)
{
	u8g2_Setup_ssd1306_i2c_128x64_noname_f(u8g2, U8G2_R0, u8x8_byte_hw_i2c, u8x8_gpio_and_delay); // 初始化u8g2 结构体
	u8g2_InitDisplay(u8g2);                                                                       // 
	u8g2_SetPowerSave(u8g2, 0);                                                                   // 
	u8g2_ClearBuffer(u8g2);
}
 
 
void draw(u8g2_t *u8g2)
{
	u8g2_ClearBuffer(u8g2); 
	
    u8g2_SetFontMode(u8g2, 1); /*字体模式选择*/
    u8g2_SetFontDirection(u8g2, 0); /*字体方向选择*/
    u8g2_SetFont(u8g2, u8g2_font_inb24_mf); /*字库选择*/
    u8g2_DrawStr(u8g2, 0, 20, "U");
    
    u8g2_SetFontDirection(u8g2, 1);
    u8g2_SetFont(u8g2, u8g2_font_inb30_mn);
    u8g2_DrawStr(u8g2, 21,8,"8");
        
    u8g2_SetFontDirection(u8g2, 0);
    u8g2_SetFont(u8g2, u8g2_font_inb24_mf);
    u8g2_DrawStr(u8g2, 51,30,"g");
    u8g2_DrawStr(u8g2, 67,30,"\xb2");
    
    u8g2_DrawHLine(u8g2, 2, 35, 47);
    u8g2_DrawHLine(u8g2, 3, 36, 47);
    u8g2_DrawVLine(u8g2, 45, 32, 12);
    u8g2_DrawVLine(u8g2, 46, 33, 12);
  
    u8g2_SetFont(u8g2, u8g2_font_4x6_tr);
    u8g2_DrawStr(u8g2, 1,54,"github.com/olikraus/u8g2");
		
	u8g2_SendBuffer(u8g2);
	HAL_Delay(1000);
}
 
//画点填充
void testDrawPixelToFillScreen(u8g2_t *u8g2)
{
  int t = 1000;
	u8g2_ClearBuffer(u8g2);
 
  for (int j = 0; j < 64; j++)
  {
    for (int i = 0; i < 128; i++)
    {
      u8g2_DrawPixel(u8g2,i, j);
    }
  }
  HAL_Delay(1000);
}

3.2U8g2G的demo例程

test.h

#ifndef __TEST_H
#define __TEST_H
 
#include "main.h"
#include "u8g2.h"
 
void testDrawProcess(u8g2_t *u8g2);
void testShowFont(u8g2_t *u8g2);
void testDrawFrame(u8g2_t *u8g2);
void testDrawRBox(u8g2_t *u8g2);
void testDrawCircle(u8g2_t *u8g2);
void testDrawFilledEllipse(u8g2_t *u8g2);
void testDrawMulti(u8g2_t *u8g2);
void testDrawXBM(u8g2_t *u8g2);
 
void u8g2DrawTest(u8g2_t *u8g2);
 
#endif

test.c

#include "test.h"
 
//---------------U8g2测试函数
 
#define SEND_BUFFER_DISPLAY_MS(u8g2, ms)\
  do {\
    u8g2_SendBuffer(u8g2); \
    HAL_Delay(ms);\
  }while(0);
 
 
//进度条显示
void testDrawProcess(u8g2_t *u8g2)
{
	for(int i=10;i<=80;i=i+2)
	{
		u8g2_ClearBuffer(u8g2); 
			
		char buff[20];
		sprintf(buff,"%d%%",(int)(i/80.0*100));
		
		u8g2_SetFont(u8g2,u8g2_font_ncenB12_tf);
		u8g2_DrawStr(u8g2,16,32,"STM32 U8g2");//字符显示
		
		u8g2_SetFont(u8g2,u8g2_font_ncenB08_tf);
		u8g2_DrawStr(u8g2,100,49,buff);//当前进度显示
		
		u8g2_DrawRBox(u8g2,16,40,i,10,4);//圆角填充框矩形框
		u8g2_DrawRFrame(u8g2,16,40,80,10,4);//圆角矩形
		
		u8g2_SendBuffer(u8g2);
	}
	HAL_Delay(500);
}
 
 
//字体测试 数字英文可选用 u8g2_font_ncenB..(粗) 系列字体
//u8g2_font_unifont_t_symbols/u8g2_font_unifont_h_symbols(细 圆润)
void testShowFont(u8g2_t *u8g2)
{
	int t = 1000;
	char testStr[14] = "STM32F103C8T6";
	
	u8g2_ClearBuffer(u8g2);
	
	u8g2_SetFont(u8g2,u8g2_font_u8glib_4_tf);
	u8g2_DrawStr(u8g2,0,5,testStr);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	
	u8g2_SetFont(u8g2,u8g2_font_ncenB08_tf);
	u8g2_DrawStr(u8g2,0,30,testStr);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	
    u8g2_SetFont(u8g2,u8g2_font_ncenB10_tr);
	u8g2_DrawStr(u8g2,0,60,testStr);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
}
 
//画空心矩形
void testDrawFrame(u8g2_t *u8g2)
{
	int t = 1000;
	int x = 16;
	int y = 32;
	int w = 50;
	int h = 20;
	u8g2_ClearBuffer(u8g2);
	u8g2_DrawStr(u8g2,0, 15, "DrawFrame");
 
	u8g2_DrawFrame(u8g2, x, y, w, h);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawFrame(u8g2, x+w+5, y-10, w-20, h+20);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
}
 
//画实心圆角矩形
void testDrawRBox(u8g2_t *u8g2)
{
	int t = 1000;
	int x = 16;
	int y = 32;
	int w = 50;
	int h = 20;
	int r = 3;
	u8g2_ClearBuffer(u8g2);
	u8g2_DrawStr(u8g2,0, 15, "DrawRBox");
 
	u8g2_DrawRBox(u8g2, x, y, w, h, r);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawRBox(u8g2, x+w+5, y-10, w-20, h+20, r);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
}
 
//画空心圆
void testDrawCircle(u8g2_t *u8g2)
{
	int t = 600;
	int stx = 0;  //画图起始x
	int sty = 16; //画图起始y
	int with = 16;//一个图块的间隔
	int r = 15;   //圆的半径
	u8g2_ClearBuffer(u8g2);
	u8g2_DrawStr(u8g2, 0, 15, "DrawCircle");
 
	u8g2_DrawCircle(u8g2, stx, sty - 1 + with, r, U8G2_DRAW_UPPER_RIGHT); //右上
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawCircle(u8g2, stx + with, sty, r, U8G2_DRAW_LOWER_RIGHT); //右下
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawCircle(u8g2, stx - 1 + with * 3, sty - 1 + with, r, U8G2_DRAW_UPPER_LEFT); //左上
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawCircle(u8g2, stx - 1 + with * 4, sty, r, U8G2_DRAW_LOWER_LEFT); //左下
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawCircle(u8g2, stx - 1 + with * 2, sty - 1 + with * 2, r, U8G2_DRAW_ALL);//整个圆
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	
    u8g2_DrawCircle(u8g2, 32*3, 32, 31, U8G2_DRAW_ALL);//右侧整个圆
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
}
 
//画实心椭圆
void testDrawFilledEllipse(u8g2_t *u8g2)
{
	int t = 800;
	int with = 16;//一个图块的间隔
	int rx = 27;  //椭圆x方向的半径
	int ry = 22;  //椭圆y方向的半径
	u8g2_ClearBuffer(u8g2);
	u8g2_DrawStr(u8g2,0, 14, "DrawFilledEllipse");
 
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawFilledEllipse(u8g2, 0, with, rx, ry, U8G2_DRAW_LOWER_RIGHT);//右下
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawFilledEllipse(u8g2, with * 4 - 1, with, rx, ry, U8G2_DRAW_LOWER_LEFT); //左下
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawFilledEllipse(u8g2, 0, with * 4 - 1, rx, ry, U8G2_DRAW_UPPER_RIGHT); //右上
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawFilledEllipse(u8g2, with * 4 - 1, with * 4 - 1, rx, ry, U8G2_DRAW_UPPER_LEFT); //左上
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
	u8g2_DrawFilledEllipse(u8g2, with * 6, with * 2.5, rx, ry, U8G2_DRAW_ALL);//整个椭圆
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
}
 
//环形测试
void testDrawMulti(u8g2_t *u8g2)
{
	u8g2_ClearBuffer(u8g2);
	for (int j = 0; j < 64; j+=16)
	{
		for (int i = 0; i < 128; i+=16)
		{
			u8g2_DrawPixel(u8g2, i, j);
			u8g2_SendBuffer(u8g2);
		}
	}
  
	//实心矩形逐渐变大
    u8g2_ClearBuffer(u8g2);
	for(int i=30; i>0; i-=2)
	{
		u8g2_DrawBox(u8g2,i*2,i,128-i*4,64-2*i);
		u8g2_SendBuffer(u8g2);
	}
	//空心矩形逐渐变小
	u8g2_ClearBuffer(u8g2);
	for(int i=0; i<32; i+=2)
	{
		u8g2_DrawFrame(u8g2,i*2,i,128-i*4,64-2*i);
		u8g2_SendBuffer(u8g2);
	}
	
	//实心圆角矩形逐渐变大
	u8g2_ClearBuffer(u8g2);
	for(int i=30; i>0; i-=2)
	{
		u8g2_DrawRBox(u8g2,i*2,i,128-i*4,64-2*i,10-i/3);
		u8g2_SendBuffer(u8g2);
	}
    //空心圆角矩形逐渐变小
	u8g2_ClearBuffer(u8g2);
	for(int i=0; i<32; i+=2)
	{
		u8g2_DrawRFrame(u8g2,i*2,i,128-i*4,64-2*i,10-i/3);
		u8g2_SendBuffer(u8g2);
	}
	
	//实心圆逐渐变大
	u8g2_ClearBuffer(u8g2);
	for(int i=2; i<64; i+=3)
	{
		u8g2_DrawDisc(u8g2,64,32,i, U8G2_DRAW_ALL);
		u8g2_SendBuffer(u8g2);
	}
	//空心圆逐渐变小
	u8g2_ClearBuffer(u8g2);
	for(int i=64; i>0; i-=3)
	{
		u8g2_DrawCircle(u8g2,64,32,i, U8G2_DRAW_ALL);
		u8g2_SendBuffer(u8g2);
	}
	
	//实心椭圆逐渐变大
    u8g2_ClearBuffer(u8g2);
	for(int i=2; i<32; i+=3)
	{
		u8g2_DrawFilledEllipse(u8g2,64,32, i*2, i, U8G2_DRAW_ALL);
		u8g2_SendBuffer(u8g2);
	}
    //空心椭圆逐渐变小
    u8g2_ClearBuffer(u8g2);
	for(int i=32; i>0; i-=3)
	{
		u8g2_DrawEllipse(u8g2,64,32, i*2, i, U8G2_DRAW_ALL);
		u8g2_SendBuffer(u8g2);
	}
}
 
 
// width: 128, height: 48
const unsigned char bilibili[] U8X8_PROGMEM = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x80, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1e, 0xe0, 0x03, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0xf0, 0x00, 0x00, 0xf8, 0x00, 0x00, 0x00, 0x80, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xff, 0xff, 0xff, 0x01, 0xfc, 0x00, 0x00, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x03, 0xfc, 0x00, 0x00, 0x3c, 0xc0, 0x0f, 0x00, 0x80, 0x03, 0x00, 0x80, 0xff, 0xff, 0xff, 0xff, 0x07, 0xfc, 0x00, 0x00, 0x3c, 0xc0, 0x0f, 0x00, 0xc0, 0x07, 0x00, 0x80, 0xff, 0xff, 0xff, 0xff, 0x0f, 0xfc, 0x00, 0x00, 0x3c, 0x80, 0x0f, 0x00, 0xc0, 0x07, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0x80, 0x0f, 0xf8, 0x00, 0x00, 0x3c, 0x80, 0x0f, 0x00, 0x80, 0x07, 0x00, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf8, 0x00, 0x00, 0x78, 0x80, 0x0f, 0x00, 0x80, 0x07, 0x00, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf8, 0x00, 0x00, 0x78, 0x80, 0x0f, 0x00, 0x80, 0x07, 0x00, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf8, 0x00, 0x80, 0x79, 0x80, 0x0f, 0x00, 0x98, 0x07, 0x00, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf8, 0x00, 0xe0, 0x79, 0x9f, 0x0f, 0x00, 0xbe, 0xe7, 0x01, 0xc0, 0x07, 0x10, 0x40, 0x00, 0x1f, 0xf8, 0x00, 0xe0, 0x7b, 0x1f, 0x0f, 0x00, 0xbe, 0xe7, 0x01, 0xc0, 0x87, 0x1f, 0xe0, 0x0f, 0x1f, 0xf8, 0x00, 0xe0, 0x7b, 0x1e, 0x0f, 0x00, 0x3e, 0xe7, 0x01, 0xc0, 0xe7, 0x3f, 0xe0, 0x3f, 0x1f, 0xf0, 0x00, 0xe0, 0x7b, 0x1e, 0x0f, 0x00, 0x3e, 0xe7, 0x01, 0xc0, 0xe7, 0x3f, 0xe0, 0x3f, 0x1f, 0xf0, 0x00, 0x60, 0x71, 0x1e, 0x0f, 0x00, 0x34, 0xe7, 0x01, 0xc0, 0xe7, 0x07, 0x00, 0x3f, 0x1f, 0xf0, 0x00, 0x00, 0x70, 0x00, 0x1f, 0x00, 0x00, 0x07, 0x00, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf0, 0x00, 0xc0, 0x73, 0x1e, 0x1f, 0x00, 0x3c, 0xc7, 0x01, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf0, 0x00, 0xc0, 0x73, 0x1e, 0x1f, 0x00, 0x7c, 0xe7, 0x01, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf0, 0x00, 0xc0, 0x73, 0x1e, 0x1f, 0x00, 0x7c, 0xef, 0x01, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xf0, 0x01, 0xc0, 0x77, 0x1e, 0x1e, 0x00, 0x7c, 0xef, 0x01, 0xc0, 0x07, 0x00, 0x03, 0x00, 0x1f, 0xf0, 0xff, 0xc1, 0xf7, 0x1e, 0xfe, 0x1f, 0x78, 0xef, 0x01, 0xc0, 0x07, 0x70, 0x37, 0x00, 0x1f, 0xe0, 0xff, 0x87, 0xf7, 0x1e, 0xfe, 0xff, 0x78, 0xee, 0x01, 0xc0, 0x07, 0xe0, 0x3f, 0x00, 0x1f, 0xe0, 0xff, 0x9f, 0xf7, 0x1e, 0xfe, 0xff, 0x79, 0xce, 0x01, 0xc0, 0x07, 0xc0, 0x18, 0x00, 0x1f, 0xe0, 0xff, 0xbf, 0xe7, 0x1e, 0xfe, 0xff, 0x7b, 0xce, 0x01, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xe0, 0xc7, 0xbf, 0xe7, 0x1e, 0xfe, 0xf8, 0x77, 0xce, 0x01, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xe0, 0x0f, 0x3f, 0xe7, 0x1c, 0xfe, 0xf0, 0x77, 0xce, 0x03, 0xc0, 0x07, 0x00, 0x00, 0x00, 0x1f, 0xe0, 0xcf, 0x3f, 0xe7, 0x1c, 0xfe, 0xf8, 0xf3, 0xce, 0x03, 0xc0, 0xff, 0xff, 0xff, 0xff, 0x0f, 0xe0, 0xef, 0x1f, 0xe7, 0x1c, 0xfe, 0xfe, 0xf1, 0xce, 0x03, 0x80, 0xff, 0xff, 0xff, 0xff, 0x0f, 0xe0, 0xff, 0x0f, 0xcf, 0x1c, 0xfc, 0xff, 0xf0, 0xc0, 0x03, 0x00, 0xff, 0xff, 0xff, 0xff, 0x07, 0xe0, 0xff, 0x03, 0x06, 0x1c, 0xfc, 0x7f, 0x60, 0xc0, 0x01, 0x00, 0xfe, 0xff, 0xff, 0xff, 0x03, 0xe0, 0xff, 0x00, 0x00, 0x00, 0xfc, 0x0f, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xff, 0xff, 0xff, 0x00, 0xc0, 0x0f, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x03, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
// width: 128, height: 48
const unsigned char three_support[] U8X8_PROGMEM = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x01, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x00, 0x00, 0x00, 0xfc, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x00, 0x00, 0x00, 0xfe, 0x7f, 0x00, 0x00, 0x00, 0x80, 0x0f, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x03, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x03, 0x00, 0x00, 0x80, 0x0f, 0xf0, 0x00, 0x00, 0x00, 0xc0, 0x3f, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x03, 0x00, 0x00, 0x80, 0x0f, 0xf0, 0x01, 0x00, 0x00, 0xfc, 0xff, 0x01, 0x00, 0x00, 0xc0, 0xfd, 0xff, 0x00, 0x00, 0xc0, 0x7f, 0xfe, 0x01, 0x00, 0x00, 0xff, 0xff, 0x0f, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x01, 0x00, 0xc0, 0x1f, 0xf8, 0x03, 0x00, 0x00, 0xff, 0xff, 0x0f, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x01, 0x00, 0xc0, 0x0f, 0xf0, 0x03, 0x00, 0x00, 0xfe, 0xff, 0x07, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x01, 0x00, 0xc0, 0x67, 0xe6, 0x03, 0x00, 0x00, 0xfc, 0xff, 0x03, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x01, 0x00, 0xc0, 0x67, 0xe6, 0x03, 0x00, 0x00, 0xf8, 0xff, 0x01, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x00, 0x00, 0xc0, 0x67, 0xe6, 0x03, 0x00, 0x00, 0xf0, 0x7f, 0x00, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x00, 0x00, 0xc0, 0x67, 0xee, 0x03, 0x00, 0x00, 0xe0, 0x7f, 0x00, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x00, 0x00, 0x80, 0x7f, 0xfe, 0x01, 0x00, 0x00, 0xe0, 0xff, 0x00, 0x00, 0x00, 0xe0, 0xfd, 0xff, 0x00, 0x00, 0x80, 0x7f, 0xfe, 0x01, 0x00, 0x00, 0xf0, 0xff, 0x00, 0x00, 0x00, 0xe0, 0xfd, 0x7f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0xf0, 0xff, 0x00, 0x00, 0x00, 0xe0, 0xfd, 0x7f, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x00, 0x00, 0x00, 0xf8, 0xf9, 0x01, 0x00, 0x00, 0xe0, 0xfd, 0x7f, 0x00, 0x00, 0x00, 0xfe, 0x7f, 0x00, 0x00, 0x00, 0xf8, 0xf0, 0x00, 0x00, 0x00, 0xe0, 0xfd, 0x1f, 0x00, 0x00, 0x00, 0xf8, 0x1f, 0x00, 0x00, 0x00, 0x30, 0xc0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 
void testDrawXBM(u8g2_t *u8g2)
{
	int t = 1000;
	u8g2_ClearBuffer(u8g2);
	u8g2_DrawStr(u8g2,0, 14, "DrawXBM");
 
	u8g2_DrawXBM(u8g2,0, 16, 128, 48, bilibili);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
 
	u8g2_ClearBuffer(u8g2);
	u8g2_DrawStr(u8g2,0, 14, "bilibili");
	u8g2_DrawXBM(u8g2,0, 16, 128, 48, three_support);
	SEND_BUFFER_DISPLAY_MS(u8g2,t);
}
 
void u8g2DrawTest(u8g2_t *u8g2)
{
	testDrawProcess(u8g2);
	testDrawMulti(u8g2);
	//testDrawFrame(u8g2);
	//testDrawRBox(u8g2);
	//testDrawCircle(u8g2);
	//testDrawFilledEllipse(u8g2);
	testShowFont(u8g2);
	testDrawXBM(u8g2);
 
}

main.c

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();
 
  /* 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_I2C2_Init();
  MX_TIM1_Init();
  /* USER CODE BEGIN 2 */
  u8g2_t u8g2;
  u8g2Init(&u8g2);	
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
 
    /* USER CODE BEGIN 3 */
 
       u8g2_FirstPage(&u8g2);
       do
       {
				 draw(&u8g2);
 
				 u8g2DrawTest(&u8g2);
       } while (u8g2_NextPage(&u8g2));
		
 
  }
  /* USER CODE END 3 */
}

实验现象

3.3显示网名和学号

中文取模

首先打开PCtoLCD2002，点击“选项”，选择C51格式，并勾选自定义模式，同时做如下设置。

然后在方框中输入想打印的文字，，点击“生成字模”，就能获取位图数据。

main函数

/*不*/
static const unsigned char bu[]={0x00,0x00,0xFE,0x3F,0x00,0x01,0x00,0x01,0x80,0x00,0x80,0x00,0xC0,0x02,0xA0,
0x04,0x90,0x08,0x88,0x10,0x84,0x20,0x82,0x20,0x81,0x00,0x80,0x00,0x80,0x00,0x80,0x00}；
/*可*/
static const unsigned char ke[]={0x00,0x00,0xFE,0x7F,0x00,0x08,0x00,0x08,0xF8,0x08,0x88,0x08,0x88,0x08,0x88,
0x08,0x88,0x08,0x88,0x08,0xF8,0x08,0x88,0x08,0x00,0x08,0x00,0x08,0x00,0x0A,0x00,0x04};
/*思*/
static const unsigned char si[]={0x00,0x00,0xFC,0x1F,0x84,0x10,0x84,0x10,0xFC,0x1F,0x84,0x10,0x84,0x10,0xFC,
0x1F,0x04,0x10,0x80,0x00,0x10,0x11,0x12,0x21,0x12,0x48,0x12,0x48,0xE1,0x0F,0x00,0x00};
/*议*/
static const unsigned char yi[]={0x00,0x01,0x04,0x12,0x48,0x12,0x48,0x10,0x40,0x10,0x80,0x08,0x8F,0x08,0x88,
0x08,0x08,0x05,0x08,0x05,0x08,0x02,0x28,0x02,0x18,0x05,0x88,0x08,0x40,0x10,0x30,0x60};
/*迷*/
static const unsigned char mi[]={0x00,0x02,0x44,0x12,0x88,0x12,0x88,0x0A,0x00,0x02,0xE0,0x3F,0x0F,0x02,0x08,
0x07,0x88,0x0A,0x48,0x12,0x28,0x22,0x08,0x02,0x08,0x02,0x14,0x00,0xE2,0x7F,0x00,0x00};
/*宫*/
static const unsigned char go[]={0x40,0x00,0x80,0x00,0xFE,0x7F,0x02,0x40,0x01,0x20,0xF8,0x0F,0x08,0x08,0x08,
0x08,0xF8,0x0F,0x00,0x00,0xFC,0x1F,0x04,0x10,0x04,0x10,0x04,0x10,0xFC,0x1F,0x04,0x10};

u8g2_SetFont(&u8g2,u8g2_font_ncenB12_tf);//设置字体格式
u8g2_DrawXBMP(&u8g2,16,0,16,16,bu);//（参数顺序依次是，结构体、x、y、字宽、字高、储存要显示的字点阵的数组）
u8g2_DrawXBMP(&u8g2,32,0,16,16,ke);
u8g2_DrawXBMP(&u8g2,48,0,16,16,si);
u8g2_DrawXBMP(&u8g2,64,0,16,16,yi);
u8g2_DrawXBMP(&u8g2,80,0,16,16,mi);
u8g2_DrawXBMP(&u8g2,96,0,16,16,go);
u8g2_SetFont(&u8g2,u8g2_font_ncenB10_tf);
u8g2_DrawStr(&u8g2,16,50,"632207060520");
u8g2_SendBuffer(&u8g2);

3.4滑动显示

unsigned int x=16;
  while (1)
  {
		if(x<=128)
		{
			x++;//向右滑动，可以提高每次x的增加量来控制滑动速度
		}
		else if(x>128)//置零
		{
			x=0;
		}
				u8g2_SetFont(&u8g2,u8g2_font_ncenB12_tf);//设置字体格式
                u8g2_DrawXBMP(&u8g2,16,0,16,16,bu);
                u8g2_DrawXBMP(&u8g2,32,0,16,16,ke);
                u8g2_DrawXBMP(&u8g2,48,0,16,16,si);
                u8g2_DrawXBMP(&u8g2,64,0,16,16,yi);
                u8g2_DrawXBMP(&u8g2,80,0,16,16,mi);
                u8g2_DrawXBMP(&u8g2,96,0,16,16,go);
				u8g2_SendBuffer(&u8g2);
  }

3.5图像显示

首先对选用的图片调节大小，并另存为bmp文件。

然后在PCtoLCD2002中的“模式”下选择图形模式，并选择所选图片。

获取到位图数据后，和上述文字一样定义为一个数组，然后编写如下代码。

u8g2_DrawXBMP(&u8g2, 0, 0, wall_e_bmp01_x, wall_e_bmp01_y, wall_e_bmp01);
u8g2_SendBuffer(&u8g2);

四、总结

太难了！

五、参考资料

基于STM32移植U8g2图形库——OLED显示（HAL库）_stm32 u8g2-CSDN博客

STM32+OLED屏显示字符串、汉字、图片（二）_oled显示汉字字库-CSDN博客