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
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。
cs
/* 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。
cs
/* 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
cs
#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
cs
#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
cs
#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
cs
#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
cs
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
cs
/*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};
cs
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
cs
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。
cs
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!