STM32硬件I2C驅動OLED屏幕

本文基于STM32硬件I2C驅動SSD1306 OLED屏幕，提供完整的代碼實現及關鍵注意事項，適用于128x32或128x64分辨率屏幕。代碼通過模塊化設計，支持顯示字符、數字、漢字及位圖，并優化了顯存刷新機制。

零、完整代碼

完整代碼:

1）oled.c

/*** @file oled.c* @brief OLED顯示驅動層，支持SSD1306控制器* @details 提供OLED初始化、基本繪圖、字符顯示、顯存刷新等功能* @note 本驅動針對128x32分辨率和128x64OLED屏適配，需要修改106-110行的啟動參數*/#include "oledfont.h"
#include "string.h"
#include "oled.h"
#include "stdlib.h"
#include "main.h"extern I2C_HandleTypeDef hi2c1; ///< I2C外設句柄/*** @brief OLED繪制位圖* @param x0 起始列坐標(0~127)* @param y0 起始頁號(0~3)* @param x1 結束列坐標(需大于x0)* @param y1 結束頁號(需大于y0)* @param BMP 位圖數據數組指針* @note 頁號與屏幕行的對應關系：每頁8行，128x32屏共4頁*/
void OLED_DrawBMP(unsigned char x0, unsigned char y0, unsigned char x1, unsigned char y1, unsigned char BMP[])
{unsigned int j = 0;unsigned char x, y;if (y1 % 8 == 0)y = y1 / 8;elsey = y1 / 8 + 1;for (y = y0; y < y1; y++){OLED_Set_Pos(x0, y);for (x = x0; x < x1; x++){OLED_WR_Byte(BMP[j++], OLED_DATA);}}
}// OLED的顯存
// 存放格式如下.
//[0]0 1 2 3 ... 127
//[1]0 1 2 3 ... 127
//[2]0 1 2 3 ... 127
//[3]0 1 2 3 ... 127
//[4]0 1 2 3 ... 127
//[5]0 1 2 3 ... 127
//[6]0 1 2 3 ... 127
//[7]0 1 2 3 ... 127
// （128x64顯存，8頁）
uint8_t OLED_GRAM[128][8];/*** @brief 刷新顯存到OLED物理屏幕* @details 將GRAM數組內容通過I2C寫入OLED的GDDRAM*/
void OLED_Refresh_Gram(void)
{uint8_t i, n;for (i = 0; i < 4; i++){ // 僅刷新前4頁（原為8）OLED_WR_Byte(0xb0 + i, OLED_CMD);OLED_WR_Byte(0x00, OLED_CMD);OLED_WR_Byte(0x10, OLED_CMD);for (n = 0; n < 128; n++)OLED_WR_Byte(OLED_GRAM[n][i], OLED_DATA);}
}/*** @brief 初始化SSD1306控制器* @details 配置顯示參數、硬件選項，執行上電序列*/
void OLED_Init(void)
{OLED_WR_Byte(0xAE,OLED_CMD);//關閉顯示屏OLED_WR_Byte(0x40,OLED_CMD);//設置起始行地址OLED_WR_Byte(0xB0,OLED_CMD);//設置頁面起始地址為頁面尋址模式，0-7OLED_WR_Byte(0xC8,OLED_CMD);//上下反置關(行重映射),C8,從COM[N-1]掃描到COM0;C0,設置 從COM0掃描到COM[N-1]，N為復用率OLED_WR_Byte(0x81,OLED_CMD);// 設置對比度OLED_WR_Byte(0xff,OLED_CMD);// 選擇0xff對比度，選擇范圍0x00-0xffOLED_WR_Byte(0xa1,OLED_CMD);// 左右反置關(段重映射)，A0H 設置GDDRAM的COL0映射到驅動器輸出SEG0，A1H 設置COL127映射到SEG0OLED_WR_Byte(0xa6,OLED_CMD);// 正常顯示(1亮0滅)OLED_WR_Byte(0xa8,OLED_CMD);//	設置多路傳輸比率，顯示行數OLED_WR_Byte(0x1f,OLED_CMD);//  MUX=31	 (顯示31行)OLED_WR_Byte(0xd3,OLED_CMD);// 設置垂直顯示偏移(向上)OLED_WR_Byte(0x00,OLED_CMD);// 偏移0行OLED_WR_Byte(0xd5,OLED_CMD);// 設置DCLK分頻和OSC頻率OLED_WR_Byte(0xf0,OLED_CMD);// 頻率最高OLED_WR_Byte(0xd9,OLED_CMD);// 設置預充電的持續時間OLED_WR_Byte(0x22,OLED_CMD);OLED_WR_Byte(0xda,OLED_CMD);// 設置COM引腳配置// 128*32OLED_WR_Byte(0x02,OLED_CMD);// 序列COM配置,禁用左右反置// 128*64// OLED_WR_Byte(0x12, OLED_CMD); // 交替COM，左右不反置OLED_WR_Byte(0xdb,OLED_CMD);//調整Vcomh調節器的輸出OLED_WR_Byte(0x49,OLED_CMD);OLED_WR_Byte(0x8d,OLED_CMD);// 啟用電荷泵OLED_WR_Byte(0x14,OLED_CMD);// 啟用電荷泵OLED_WR_Byte(0xaf,OLED_CMD);// 開OLED顯示OLED_Clear();
}/*** @brief 顯示單個ASCII字符* @param x 列坐標(0-127)* @param y 頁號(0-3)* @param chr 要顯示的字符* @param Char_Size 字體大小：8或16* @note 8像素字體使用6x8點陣，16像素使用8x16點陣*/
void OLED_ShowChar(uint8_t x, uint8_t y, uint8_t chr, uint8_t Char_Size)
{unsigned char c = 0, i = 0;c = chr - ' '; // 得到偏移后的值if (x > Max_Column - 1){x = 0;// 原代碼：y += 2（適用于8頁，改為y += 1適應4頁）y = y + 1; // 每頁高度為8像素，32行共4頁}if (Char_Size == 16){// 16像素字體占2頁（原為兩行，需確保不超過4頁）OLED_Set_Pos(x, y);for (i = 0; i < 8; i++)OLED_WR_Byte(F8X16[c * 16 + i], OLED_DATA);OLED_Set_Pos(x, y + 1);for (i = 0; i < 8; i++)OLED_WR_Byte(F8X16[c * 16 + i + 8], OLED_DATA);}else if (Char_Size == 8){OLED_Set_Pos(x, y);for (i = 0; i < 6; i++)OLED_WR_Byte(F6x8[c][i], OLED_DATA);}
}/*** @brief 顯示無符號整數* @param x,y 起始坐標* @param num 要顯示的數字(0~4294967295)* @param len 顯示位數（自動截斷高位）* @param size2 字體大小（需為8或16）*/
void OLED_ShowNum(uint8_t x, uint8_t y, uint32_t num, uint8_t len, uint8_t size2) // OLED_ShowNum(103,6,t,3,16);//顯示ASCII字符的碼值
{uint8_t t, temp;uint8_t enshow = 0;for (t = 0; t < len; t++){temp = (num / oled_pow(10, len - t - 1)) % 10;if (enshow == 0 && t < (len - 1)){if (temp == 0){OLED_ShowChar(x + (size2 / 2) * t, y, ' ', size2);continue;}elseenshow = 1;}OLED_ShowChar(x + (size2 / 2) * t, y, temp + '0', size2);}
}/*** @brief 計算m的n次方* @param m 底數* @param n 指數* @return m^n的值*/
uint32_t oled_pow(uint8_t m, uint8_t n)
{uint32_t result = 1;while (n--)result *= m;return result;
}/*** @brief 顯示字符串* @param x,y 起始坐標* @param chr 字符串數組指針* @param Char_Size 字體大小（8或16）* @note 字符串以'\0'結尾，自動計算長度*/
void OLED_ShowString(uint8_t x, uint8_t y, uint8_t chr[], uint8_t Char_Size)
{unsigned char j = 0;while (chr[j] != '\0'){OLED_ShowChar(x, y, chr[j], Char_Size);x += 8;if (x > Max_Column - 8){x = 0;y += 2;}j++;}
}/*** @brief 顯示漢字* @param x,y 起始坐標* @param no 漢字索引（0~7）* @note 漢字數據存儲在ZH數組中，索引范圍為0~7*/
void OLED_ShowCHinese(uint8_t x, uint8_t y, uint8_t no)
{uint8_t t, adder = 0;OLED_Set_Pos(x, y);for (t = 0; t < 16; t++){OLED_WR_Byte(ZH[2 * no][t], OLED_DATA);adder += 1;}OLED_Set_Pos(x, y + 1);for (t = 0; t < 16; t++){OLED_WR_Byte(ZH[2 * no + 1][t], OLED_DATA);adder += 1;}
}/*** @brief 設置OLED顯示位置* @param x 列坐標(0~127)* @param y 頁號(0~3)* @note 頁號與屏幕行的對應關系：每頁8行，128x32屏共4頁*/
void OLED_Set_Pos(unsigned char x, unsigned char y)
{OLED_WR_Byte(0xb0 + y, OLED_CMD);OLED_WR_Byte(((x & 0xf0) >> 4) | 0x10, OLED_CMD);OLED_WR_Byte((x & 0x0f), OLED_CMD);
}// 打開OLED顯示
void OLED_Display_On(void)
{OLED_WR_Byte(0X8D, OLED_CMD); // SET DCDC命令OLED_WR_Byte(0X14, OLED_CMD); // DCDC ONOLED_WR_Byte(0XAF, OLED_CMD); // DISPLAY ON
}// 關閉OLED顯示
void OLED_Display_Off(void)
{OLED_WR_Byte(0X8D, OLED_CMD); // SET DCDC命令OLED_WR_Byte(0X10, OLED_CMD); // DCDC OFFOLED_WR_Byte(0XAE, OLED_CMD); // DISPLAY OFF
}/*** @brief 清空OLED顯示* @note 將所有像素設置為0（黑色）*/
void OLED_Clear(void)
{uint8_t i, n;for (i = 0; i < 8; i++){OLED_WR_Byte(0xb0 + i, OLED_CMD); // 設置頁地址（0~7）OLED_WR_Byte(0x00, OLED_CMD);	  // 設置顯示位置—列低地址OLED_WR_Byte(0x10, OLED_CMD);	  // 設置顯示位置—列高地址for (n = 0; n < 128; n++)OLED_WR_Byte(0, OLED_DATA);} // 更新顯示
}/*** @brief 打開OLED顯示* @note 將所有像素設置為1（白色）*/
void OLED_On(void)
{uint8_t i, n;for (i = 0; i < 8; i++){OLED_WR_Byte(0xb0 + i, OLED_CMD); // 設置頁地址（0~7）OLED_WR_Byte(0x00, OLED_CMD);	  // 設置顯示位置—列低地址OLED_WR_Byte(0x10, OLED_CMD);	  // 設置顯示位置—列高地址for (n = 0; n < 128; n++)OLED_WR_Byte(1, OLED_DATA);} // 更新顯示
}/*** @brief 填充OLED顯示* @param fill_Data 填充數據（0x00或0xFF）* @note 0x00填充黑色，0xFF填充白色*/
void fill_picture(unsigned char fill_Data)
{unsigned char m, n;for (m = 0; m < 8; m++){OLED_WR_Byte(0xb0 + m, 0); // page0-page1OLED_WR_Byte(0x00, 0);	   // low column start addressOLED_WR_Byte(0x10, 0);	   // high column start addressfor (n = 0; n < 128; n++){OLED_WR_Byte(fill_Data, 1);}}
}/*** @brief 寫入數據或命令到OLED* @param dat 要寫入的數據* @param cmd 0表示命令，1表示數據* @note 通過I2C將數據發送到OLED控制器*/
void OLED_WR_Byte(uint8_t dat, uint8_t cmd)
{static uint8_t cmd_data[2];if (cmd == OLED_CMD){cmd_data[0] = 0x00;}else{cmd_data[0] = 0x40;}cmd_data[1] = dat;HAL_I2C_Master_Transmit(&hi2c1, 0X78, cmd_data, 2, 10);
}/*** @brief 寫入I2C命令或數據* @param I2C_Command 要寫入的命令或數據* @note 通過I2C將數據發送到OLED控制器*/
void Write_IIC_Command(unsigned char I2C_Command) // 寫命令
{uint8_t *pData;pData = &I2C_Command;HAL_I2C_Mem_Write(&hi2c1, 0x78, 0x00, I2C_MEMADD_SIZE_8BIT, pData, 1, 100);
}/*** @brief 寫入I2C數據* @param IIC_Data 要寫入的數據* @note 通過I2C將數據發送到OLED控制器*/
void Write_IIC_Data(unsigned char IIC_Data) // 寫數據
{uint8_t *pData;pData = &IIC_Data;HAL_I2C_Mem_Write(&hi2c1, 0x78, 0x40, I2C_MEMADD_SIZE_8BIT, pData, 1, 100);
}

2）oled.h

#ifndef __OLED_H
#define __OLED_H
// #include "sys.h"#include "main.h"
// OLED模式設置
// 0: 4線串行模式  （模塊的BS1，BS2均接GND）
#define OLED_MODE 0
#define X_WIDTH 128
#define Y_WIDTH 32
#define Max_Column 128 // 列
#define Max_Row 32	   // 行#define SIZE 8
#define XLevelL 0x00
#define XLevelH 0x10#define Brightness 0xFF#define OLED_CMD 0	// 寫命令
#define OLED_DATA 1 // 寫數據void Write_IIC_Data(unsigned char IIC_Data);
void Write_IIC_Command(unsigned char I2C_Command);
void OLED_WR_Byte(uint8_t dat, uint8_t cmd);
void fill_picture(unsigned char fill_Data);
void OLED_On(void);
void OLED_Clear(void);
void OLED_Display_Off(void);
void OLED_Display_On(void);void OLED_Set_Pos(unsigned char x, unsigned char y);
void OLED_ShowCHinese(uint8_t x, uint8_t y, uint8_t no);
void OLED_ShowString(uint8_t x, uint8_t y, uint8_t chr[], uint8_t Char_Size);	   // OLED_ShowString(0,0,a,sizeof(a));
void OLED_ShowNum(uint8_t x, uint8_t y, uint32_t num, uint8_t len, uint8_t size2); // OLED_ShowNum(103,6,t,3,16);//顯示ASCII字符的碼值uint32_t oled_pow(uint8_t m, uint8_t n);
void OLED_ShowChar(uint8_t x, uint8_t y, uint8_t chr, uint8_t Char_Size);
void OLED_Init(void);
void OLED_Refresh_Gram(void);
void OLED_DrawBMP(unsigned char x0, unsigned char y0, unsigned char x1, unsigned char y1, unsigned char BMP[]);/*
x x x x x x x x x x x x x x x x     ==16個字符列   y=0行
x x x x x x x x x x x x x x x x     ==16個字符列   y=1行
x x x x x x x x x x x x x x x x     ==16個字符列   y=2行
x x x x x x x x x x x x x x x x     ==16個字符列   y=3行
x x x x x x x x x x x x x x x x     ==16個字符列   y=4行
x x x x x x x x x x x x x x x x     ==16個字符列   y=5行
x x x x x x x x x x x x x x x x     ==16個字符列   y=6行
x x x x x x x x x x x x x x x x     ==16個字符列   y=7行
*/#endif

3) oledfont.h

#ifndef __OLEDFONT_H
#define __OLEDFONT_H  
//常用ASCII表
//偏移量32 
//ASCII字符集: !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~
//PC2LCD2002取模方式設置：陰碼+逐列式+順向+C51格式
//總共：3個字符集（12*12、16*16和24*24），用戶可以自行新增其他分辨率的字符集。
//每個字符所占用的字節數為:(size/8+((size%8)?1:0))*(size/2),其中size:是字庫生成時的點陣大小(12/16/24...)//12*12 ASCII字符集點陣
const unsigned char F6x8[][6] =		
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,// sp
0x00, 0x00, 0x00, 0x2f, 0x00, 0x00,// !
0x00, 0x00, 0x07, 0x00, 0x07, 0x00,// "
0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14,// #
0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12,// $
0x00, 0x62, 0x64, 0x08, 0x13, 0x23,// %
0x00, 0x36, 0x49, 0x55, 0x22, 0x50,// &
0x00, 0x00, 0x05, 0x03, 0x00, 0x00,// '
0x00, 0x00, 0x1c, 0x22, 0x41, 0x00,// (
0x00, 0x00, 0x41, 0x22, 0x1c, 0x00,// )
0x00, 0x14, 0x08, 0x3E, 0x08, 0x14,// *
0x00, 0x08, 0x08, 0x3E, 0x08, 0x08,// +
0x00, 0x00, 0x00, 0xA0, 0x60, 0x00,// ,
0x00, 0x08, 0x08, 0x08, 0x08, 0x08,// -
0x00, 0x00, 0x60, 0x60, 0x00, 0x00,// .
0x00, 0x20, 0x10, 0x08, 0x04, 0x02,// /
0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E,// 0
0x00, 0x00, 0x42, 0x7F, 0x40, 0x00,// 1
0x00, 0x42, 0x61, 0x51, 0x49, 0x46,// 2
0x00, 0x21, 0x41, 0x45, 0x4B, 0x31,// 3
0x00, 0x18, 0x14, 0x12, 0x7F, 0x10,// 4
0x00, 0x27, 0x45, 0x45, 0x45, 0x39,// 5
0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30,// 6
0x00, 0x01, 0x71, 0x09, 0x05, 0x03,// 7
0x00, 0x36, 0x49, 0x49, 0x49, 0x36,// 8
0x00, 0x06, 0x49, 0x49, 0x29, 0x1E,// 9
0x00, 0x00, 0x36, 0x36, 0x00, 0x00,// :
0x00, 0x00, 0x56, 0x36, 0x00, 0x00,// ;
0x00, 0x08, 0x14, 0x22, 0x41, 0x00,// <
0x00, 0x14, 0x14, 0x14, 0x14, 0x14,// =
0x00, 0x00, 0x41, 0x22, 0x14, 0x08,// >
0x00, 0x02, 0x01, 0x51, 0x09, 0x06,// ?
0x00, 0x32, 0x49, 0x59, 0x51, 0x3E,// @
0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C,// A
0x00, 0x7F, 0x49, 0x49, 0x49, 0x36,// B
0x00, 0x3E, 0x41, 0x41, 0x41, 0x22,// C
0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C,// D
0x00, 0x7F, 0x49, 0x49, 0x49, 0x41,// E
0x00, 0x7F, 0x09, 0x09, 0x09, 0x01,// F
0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A,// G
0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F,// H
0x00, 0x00, 0x41, 0x7F, 0x41, 0x00,// I
0x00, 0x20, 0x40, 0x41, 0x3F, 0x01,// J
0x00, 0x7F, 0x08, 0x14, 0x22, 0x41,// K
0x00, 0x7F, 0x40, 0x40, 0x40, 0x40,// L
0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F,// M
0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F,// N
0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E,// O
0x00, 0x7F, 0x09, 0x09, 0x09, 0x06,// P
0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E,// Q
0x00, 0x7F, 0x09, 0x19, 0x29, 0x46,// R
0x00, 0x46, 0x49, 0x49, 0x49, 0x31,// S
0x00, 0x01, 0x01, 0x7F, 0x01, 0x01,// T
0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F,// U
0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F,// V
0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F,// W
0x00, 0x63, 0x14, 0x08, 0x14, 0x63,// X
0x00, 0x07, 0x08, 0x70, 0x08, 0x07,// Y
0x00, 0x61, 0x51, 0x49, 0x45, 0x43,// Z
0x00, 0x00, 0x7F, 0x41, 0x41, 0x00,// [
0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55,// 55
0x00, 0x00, 0x41, 0x41, 0x7F, 0x00,// ]
0x00, 0x04, 0x02, 0x01, 0x02, 0x04,// ^
0x00, 0x40, 0x40, 0x40, 0x40, 0x40,// _
0x00, 0x00, 0x01, 0x02, 0x04, 0x00,// '
0x00, 0x20, 0x54, 0x54, 0x54, 0x78,// a
0x00, 0x7F, 0x48, 0x44, 0x44, 0x38,// b
0x00, 0x38, 0x44, 0x44, 0x44, 0x20,// c
0x00, 0x38, 0x44, 0x44, 0x48, 0x7F,// d
0x00, 0x38, 0x54, 0x54, 0x54, 0x18,// e
0x00, 0x08, 0x7E, 0x09, 0x01, 0x02,// f
0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C,// g
0x00, 0x7F, 0x08, 0x04, 0x04, 0x78,// h
0x00, 0x00, 0x44, 0x7D, 0x40, 0x00,// i
0x00, 0x40, 0x80, 0x84, 0x7D, 0x00,// j
0x00, 0x7F, 0x10, 0x28, 0x44, 0x00,// k
0x00, 0x00, 0x41, 0x7F, 0x40, 0x00,// l
0x00, 0x7C, 0x04, 0x18, 0x04, 0x78,// m
0x00, 0x7C, 0x08, 0x04, 0x04, 0x78,// n
0x00, 0x38, 0x44, 0x44, 0x44, 0x38,// o
0x00, 0xFC, 0x24, 0x24, 0x24, 0x18,// p
0x00, 0x18, 0x24, 0x24, 0x18, 0xFC,// q
0x00, 0x7C, 0x08, 0x04, 0x04, 0x08,// r
0x00, 0x48, 0x54, 0x54, 0x54, 0x20,// s
0x00, 0x04, 0x3F, 0x44, 0x40, 0x20,// t
0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C,// u
0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C,// v
0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C,// w
0x00, 0x44, 0x28, 0x10, 0x28, 0x44,// x
0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C,// y
0x00, 0x44, 0x64, 0x54, 0x4C, 0x44,// z
0x14, 0x14, 0x14, 0x14, 0x14, 0x14,// horiz lines
};/****************************************8*16的點陣************************************/
const unsigned char F8X16[]=	  
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,// 00x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00,//! 10x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//" 20x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00,//# 30x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00,//$ 40xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00,//% 50x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10,//& 60x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//' 70x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00,//( 80x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00,//) 90x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00,//* 100x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00,//+ 110x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00,//, 120x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,//- 130x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00,//. 140x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00,/// 150x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,//0 160x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//1 170x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//2 180x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,//3 190x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,//4 200x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,//5 210x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,//6 220x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,//7 230x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//8 240x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,//9 250x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 260x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00,//; 270x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00,//< 280x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//= 290x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00,//> 300x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00,//? 310xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00,//@ 320x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,//A 330x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00,//B 340xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00,//C 350x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00,//D 360x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E 370x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00,//F 380xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00,//G 390x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H 400x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//I 410x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00,//J 420x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00,//K 430x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 440x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M 450x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00,//N 460xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00,//O 470x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P 480xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00,//Q 490x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R 500x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,//S 510x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T 520x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//U 530x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00,//V 540xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,//W 550x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20,//X 560x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//Y 570x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00,//Z 580x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00,//[ 590x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00,//\ 600x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00,//] 610x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//^ 620x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,//_ 630x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//` 640x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 650x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b 660x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00,//c 670x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20,//d 680x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,//e 690x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//f 700x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00,//g 710x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//h 720x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i 730x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,//j 740x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00,//k 750x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//l 760x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F,//m 770x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n 780x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//o 790x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00,//p 800x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80,//q 810x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r 820x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,//s 830x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00,//t 840x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,//u 850x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00,//v 860x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00,//w 870x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00,//x 880x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y 890x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,//z 900x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40,//{ 910x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,//| 920x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00,//} 930x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//~ 94
};char ZH[][32]={ {0x40,0x44,0x54,0x65,0xC6,0x64,0x54,0x44,0x00,0xFC,0x44,0x44,0xC4,0x42,0x40,0x00},
{0x20,0x12,0x4A,0x82,0x7F,0x02,0x0A,0x92,0x60,0x1F,0x00,0x00,0xFF,0x00,0x00,0x00},/*"新",0*/
{0x00,0x20,0x18,0xC7,0x44,0x44,0x44,0x44,0xFC,0x44,0x44,0x44,0x44,0x04,0x00,0x00},
{0x04,0x04,0x04,0x07,0x04,0x04,0x04,0x04,0xFF,0x04,0x04,0x04,0x04,0x04,0x04,0x00},/*"年",1*/
{0x00,0xE0,0x00,0xFF,0x10,0x20,0x08,0x08,0x08,0xFF,0x08,0x08,0xF8,0x00,0x00,0x00},
{0x01,0x00,0x00,0xFF,0x00,0x81,0x41,0x31,0x0D,0x03,0x0D,0x31,0x41,0x81,0x81,0x00},/*"快",2*/
{0x00,0x00,0xE0,0x9C,0x84,0x84,0x84,0xF4,0x82,0x82,0x83,0x82,0x80,0x80,0x00,0x00},
{0x00,0x20,0x10,0x08,0x06,0x40,0x80,0x7F,0x00,0x00,0x02,0x04,0x08,0x30,0x00,0x00},/*"樂",3*/
{0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00},
{0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,0x06,0x05,0x04,0x04,0x04,0x04,0x04,0x00},/*"學",4*/
{0x80,0x80,0x80,0x80,0xFF,0x80,0x80,0xA0,0x90,0x88,0x84,0x82,0x80,0x80,0x80,0x00},
{0x00,0x00,0x00,0x00,0xFF,0x40,0x21,0x12,0x04,0x08,0x10,0x20,0x20,0x40,0x40,0x00},/*"長",5*/
{0x20,0x24,0x24,0x24,0xFE,0x23,0x22,0x20,0x20,0xFF,0x20,0x22,0x2C,0xA0,0x20,0x00},
{0x00,0x08,0x48,0x84,0x7F,0x02,0x41,0x40,0x20,0x13,0x0C,0x14,0x22,0x41,0xF8,0x00},/*"我",6*/
{0x10,0x0C,0x04,0x24,0x24,0x24,0x25,0x26,0x24,0x24,0x24,0x24,0x04,0x14,0x0C,0x00},
{0x00,0x81,0x81,0x41,0x31,0x0F,0x01,0x01,0x01,0x7F,0x81,0x81,0x81,0xF1,0x00,0x00},/*"完",7*/
{0x00,0x00,0xF8,0x88,0x88,0x88,0x88,0x08,0x08,0xFF,0x08,0x09,0x0A,0xC8,0x08,0x00},
{0x80,0x60,0x1F,0x00,0x10,0x20,0x1F,0x80,0x40,0x21,0x16,0x18,0x26,0x41,0xF8,0x00},/*"成",8*/
{0x00,0xFC,0x04,0xFC,0x00,0x10,0x10,0xFF,0x90,0xC8,0x09,0x0E,0x08,0xE8,0x08,0x00},
{0x00,0x0F,0x04,0x0F,0x00,0x44,0x82,0x7F,0x00,0x40,0x4F,0x60,0x5C,0x43,0x40,0x00},/*"啦",9*/{0x10,0x88,0xC4,0x33,0x00,0x20,0x10,0x28,0x24,0xE3,0x24,0x28,0x10,0x20,0x20,0x00},
{0x01,0x00,0xFF,0x00,0x20,0x11,0x0D,0x41,0x81,0x7F,0x01,0x05,0x09,0x31,0x00,0x00},/*"徐",10*/
/* (16 X 16 , 宋體 )*/{0x00,0xFE,0x22,0xFE,0x00,0xFE,0x22,0xFE,0x00,0xFC,0x16,0x25,0x84,0xFC,0x00,0x00},
{0x60,0x1F,0x22,0xBF,0x40,0x3F,0x82,0xFF,0x00,0x13,0x12,0x12,0x52,0x82,0x7E,0x00},/*"鵬",11*/
/* (16 X 16 , 宋體 )*/{0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0xFE,0x40,0xA0,0x10,0x08,0x00,0x00},
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x0C,0x10,0x21,0x42,0xF0,0x00},/*"飛",12*/
/* (16 X 16 , 宋體 )*///每個字必須帶大括號否則顯示效果不好
};#endif


（注：需根據具體硬件調整I2C引腳和屏幕參數）

一、硬件連接

  • OLED屏幕：SSD1306控制器，支持I2C通信。
  • STM32引腳配置：
    • SCL：I2C時鐘線（如PB6）
    • SDA：I2C數據線（如PB7）
    • I2C地址：0x78（若屏幕帶RESET引腳，需額外配置）

二、代碼結構

1. 核心文件說明

  • oled.c：驅動層實現，包含初始化、顯存管理、字符顯示等功能。
  • oled.h：定義宏、函數原型及屏幕參數。
  • oledfont.h：存儲ASCII和漢字點陣數據（6x8、8x16字體）。

2. 關鍵函數解析

  • OLED_Init()：初始化SSD1306控制器，配置顯示參數。
void OLED_Init(void) {OLED_WR_Byte(0xAE, OLED_CMD); // 關閉顯示OLED_WR_Byte(0xD5, OLED_CMD); // 設置時鐘分頻OLED_WR_Byte(0xA8, OLED_CMD); // 設置復用率// ... 其他配置命令OLED_Clear(); ????????????????// 清屏
}
  • OLED_Refresh_Gram()：將顯存數據刷新到物理屏幕，通過I2C逐頁寫入。
  • OLED_ShowChar()：顯示單個字符，支持8/16像素字體，自動換行。

三、關鍵實現細節

1. 顯存管理

  • 顯存數組：OLED_GRAM[128][8]，每頁8行，共4頁（128x32）或8頁（128x64）。
  • 刷新邏輯：僅刷新有效頁，減少I2C傳輸量。
void OLED_Refresh_Gram(void) {for (uint8_t i = 0; i < 4; i++) { // 僅刷新前4頁OLED_Set_Pos(0, i);HAL_I2C_Mem_Write(&hi2c1, 0x78, 0x40, I2C_MEMADD_SIZE_8BIT, OLED_GRAM[i], 128, 100);}
}

2. 字體顯示優化

  • ASCII字符：使用F6x8和F8X16點陣數據，通過偏移量快速定位。
  • 漢字顯示：預存儲常用漢字點陣（如“新年快樂”），通過索引調用。
void OLED_ShowCHinese(uint8_t x, uint8_t y, uint8_t no) {OLED_Set_Pos(x, y);for (uint8_t t = 0; t < 16; t++)OLED_WR_Byte(ZH[2*no][t], OLED_DATA); // 寫入上半部分OLED_Set_Pos(x, y+1);for (uint8_t t = 0; t < 16; t++)OLED_WR_Byte(ZH[2*no+1][t], OLED_DATA); // 寫入下半部分
}

四、注意事項（重點！）

  1. 頭文件包含問題

    • main.c中禁止包含oledfont.h，否則報錯：工程\工程名.axf: Error: L6200E: Symbol F6x8 multiply defined (by gpio.o and main.o).等。
    • 正確做法：僅在oled.c中包含oledfont.h，其他文件通過extern引用。

  2. 屏幕參數調整

    • 修改初始化參數（oled.c第106-110行），否則字符高度異常。
// 128x32屏配置
OLED_WR_Byte(0xDA, OLED_CMD);
OLED_WR_Byte(0x02, OLED_CMD); // COM引腳配置
// 128x64屏需改為：OLED_WR_Byte(0x12, OLED_CMD);

  1. I2C地址與速率

    • 確認OLED的I2C地址（通常為0x78或0x7A）。
    • 調整I2C時鐘頻率（STM32默認100kHz，SSD1306支持400kHz）。
    • extern I2C_HandleTypeDef hi2c1; ///< I2C外設句柄，根據實際情況改
      ?

五、使用示例

顯示字符串和數字

OLED_ShowString(0, 0, "Hello World!", 16); // 16像素字體
OLED_ShowNum(0, 2, 2023, 4, 16); ?????????// 顯示數字2023

顯示自定義位圖

const uint8_t BMP[] = {0xFF, 0x81, 0xBD, ...}; // 位圖數據
OLED_DrawBMP(0, 0, 128, 4, BMP); ?????????????// 全屏顯示位圖

六、常見問題

  • 屏幕不顯示：檢查I2C地址、引腳配置及初始化序列。
  • 字符錯位：確認OLED_Set_Pos()的頁號與顯存對應關系。
  • 刷新閃爍：提高刷新頻率（建議200Hz以上），或使用雙緩沖機制。

感謝婷婷后援團的小徐同學???

本文來自互聯網用戶投稿，該文觀點僅代表作者本人，不代表本站立場。本站僅提供信息存儲空間服務，不擁有所有權，不承擔相關法律責任。
如若轉載，請注明出處：http://www.pswp.cn/news/905568.shtml
繁體地址，請注明出處：http://hk.pswp.cn/news/905568.shtml
英文地址，請注明出處：http://en.pswp.cn/news/905568.shtml

如若內容造成侵權/違法違規/事實不符，請聯系多彩編程網進行投訴反饋email:809451989@qq.com，一經查實，立即刪除！

相關文章

鴻蒙 PC 發布之后，想在技術上聊聊它的未來可能

鴻蒙 PC 發布之后，想在技術上聊聊它的未來可能

最近鴻蒙 PC 剛發布完&#xff0c;但是發布會沒公布太多技術細節&#xff0c;基本上一些細節都是通過自媒體渠道獲取&#xff0c;首先可以確定的是&#xff0c;鴻蒙 PC 本身肯定是無法「直接」運行 win 原本的應用&#xff0c;但是可以支持手機上「原生鴻蒙」的應用&#xff0c…
閱讀更多...
【JAVA】抽象類與接口：設計模式中的應用對比（16）

【JAVA】抽象類與接口：設計模式中的應用對比（16）

核心知識點詳細解釋 Java抽象類和接口的定義、特點和使用場景 抽象類 抽象類是使用 abstract 關鍵字修飾的類。它不能被實例化&#xff0c;主要用于作為其他類的基類&#xff0c;提供一些通用的屬性和方法。抽象類可以包含抽象方法和具體方法。抽象方法是使用 abstract 關鍵…
閱讀更多...
HTML 顏色全解析：從命名規則到 RGBA/HSL 值，附透明度設置與場景應用指南

HTML 顏色全解析：從命名規則到 RGBA/HSL 值，附透明度設置與場景應用指南

一、HTML 顏色系統詳解 HTML 中的顏色可以通過多種方式定義&#xff0c;包括顏色名稱、RGB 值、十六進制值、HSL 值等&#xff0c;同時支持透明度調整。以下是詳細分類及應用場景&#xff1a; 1. 顏色名稱&#xff08;預定義關鍵字&#xff09; HTML 預定義了 140 個標準顏色名…
閱讀更多...
LVS負載均衡群集和keepalive

LVS負載均衡群集和keepalive

目錄 一. 集群概述 1.1 集群的定義 1.2 集群的分類 1. 高可用集群 HA 2. 高性能運輸群集 HPC 3.負載均衡群集 LB 4. 分布式存儲集群 二. LVS概述 2.1 LVS的定義 2.2 LVS的工作原理 2.3 LVS 的三種工作模式 2.4 LVS 三種工作模式的對比 2.5 LVS 調度算法 1. 靜態…
閱讀更多...
ZTE 7551N 中興小鮮60 遠航60 努比亞小牛 解鎖BL 刷機包 刷root 展訊 T760 bl

ZTE 7551N 中興小鮮60 遠航60 努比亞小牛 解鎖BL 刷機包 刷root 展訊 T760 bl

ZTE 7551N 中興小鮮60 遠航60 努比亞小牛 解鎖BL 刷機包 刷root 3款機型是一個型號&#xff0c;包通用&#xff0c; ro.product.system.modelZTE 7551N ro.product.system.nameCN_P720S15 #################################### # from generate-common-build-props # Th…
閱讀更多...
單片機-STM32部分：12、I2C

單片機-STM32部分：12、I2C

飛書文檔https://x509p6c8to.feishu.cn/wiki/MsB7wLebki07eUkAZ1ec12W3nsh 一、簡介 IIC協議&#xff0c;又稱I2C協議&#xff0c;是由PHILP公司在80年代開發的兩線式串行總線&#xff0c;用于連接微控制器及其外圍設備&#xff0c;IIC屬于半雙工同步通信方式。 IIC是一種同步…
閱讀更多...
Virtualized Table 虛擬化表格 el-table-v2 表頭分組 多級表頭的簡單示例

Virtualized Table 虛擬化表格 el-table-v2 表頭分組 多級表頭的簡單示例

注意添加這個屬性,會影響到有多少個層級的表頭: :header-height“[50, 40]”,即后面的columnIndex 如果有fix的列CustomizedHeader會被調用多次,如果有多個層級的表頭,也會被調用多次, 實際被調用次數是(fix數 1 * 表頭層級數量) 以下代碼均刪除了JSX TS版本代碼 <templ…
閱讀更多...
防御保護-----第十二章：VPN概述

防御保護-----第十二章：VPN概述

文章目錄 第二部分&#xff0c;數據安全第十二章&#xff1a;VPN概述VPN概述VPN分類VPN關鍵技術隧道技術身份認證技術加解密技術數據認證技術 數據的安全傳輸密碼學發展史 對稱加密算法 --- 傳統密碼算法密鑰解釋流加密分組加密 --- 塊加密算法填充算法PKCS7算法分組模式 公鑰密…
閱讀更多...
前端項目打包部署流程j

前端項目打包部署流程j

1.打包前端項目(運行build這個文件) 2.打包完成后&#xff0c;控制臺如下所示:(沒有報錯即代表成功) 3.左側出現dist文件夾 4.準備好我們下載的nginx(可以到官網下載一個),然后在一個沒有中文路徑下的文件夾里面解壓。 5.在繼承終端內打開我們的項目&#xff0c;找到前面打包好…
閱讀更多...
Go語言標識符

Go語言標識符

文章目錄 標識符的組成規則Go語言關鍵字預定義標識符標識符命名慣例 特殊標識符標識符訪問權限控制 在Go語言中&#xff0c;標識符(Identifier)是用來命名變量、函數、類型、常量等程序實體的名稱。 標識符的組成規則 1、必須以字母或下劃線(_)開頭&#xff1a; 字母包括Unico…
閱讀更多...
CST軟件對OPERACST軟件聯合仿真汽車無線充電站對人體的影響

CST軟件對OPERACST軟件聯合仿真汽車無線充電站對人體的影響

上海又收緊了新能源車的免費上牌政策。所以年前一些伙伴和我探討過買新能源汽車的問題&#xff0c;小伙伴們基本糾結的點是買插電還是純電&#xff1f;我個人是很抗拒新能源車的&#xff0c;也開過坐過。個人有幾個觀點&#xff1a; 溢價過高&#xff0c;不保值。實際并不環保…
閱讀更多...
吳恩達機器學習筆記：多變量梯度下降

吳恩達機器學習筆記：多變量梯度下降

1.多維特征 之前我們探討了單變量/特征的回歸模型&#xff0c;現在我們對房價模型增加更多的特征&#xff0c;例如房間數樓層等&#xff0c;構成一個含有多個變量的模型&#xff0c;模型中的特征為 &#xff08; x 1 &#xff0c; x 2 &#xff0c; x 3... x n &#xff09; &…
閱讀更多...
【Linux Nano Vim快捷鍵大全】

【Linux Nano Vim快捷鍵大全】

Nano 快捷鍵大全 常用高頻操作 功能描述快捷鍵組合替代按鍵/備注使用頻率顯示幫助CtrlGF1高保存文件CtrlOF3高退出編輯器CtrlXF2高剪切當前行CtrlKF9高粘貼內容CtrlUF10高搜索文本CtrlWF6高替換文本Ctrl\AltR高撤銷操作AltU無中重做操作AltE無中跳轉到行號Ctrl_AltG中插入文件…
閱讀更多...
uniapp vue 沉浸式窗體如何獲取并排除外部手機瀏覽器底部菜單欄工具欄高度

uniapp vue 沉浸式窗體如何獲取并排除外部手機瀏覽器底部菜單欄工具欄高度

這個問題可以簡稱為&#xff1a;uniapp vue 獲取可視窗口高度 第一種方案&#xff0c;只改變css樣式 /* 不考慮瀏覽器UI的最小視口高度 */ .element {height: 100svh; /* small viewport height */ }/* 考慮瀏覽器UI變化的動態視口高度 */ .element {height: 100dvh; /* dyna…
閱讀更多...
React Native告別圖標體積大手動更換慢的噩夢：讓圖標更新像修改文字一樣簡單

React Native告別圖標體積大手動更換慢的噩夢：讓圖標更新像修改文字一樣簡單

寫在前面：凌晨三點的圖標戰爭 “所有圖標都要換成圓角風格，明天上線！”——產品經理這條消息彈出時，我的保溫杯差點從手中滑落。掃了一眼項目中的347個圖標文件，我知道今晚又是個不眠夜。但就在絕望之際，同事發來一個GIF：他只是在終端輸入了iconfont-rn --update，所有…
閱讀更多...
自然語言處理與BI融合實戰：ChatBI動態語義解析技術架構剖析

自然語言處理與BI融合實戰：ChatBI動態語義解析技術架構剖析

在數字經濟時代&#xff0c;數據已成為企業核心競爭力的關鍵要素。如何高效挖掘數據價值、實現智能化決策&#xff0c;成為企業數字化轉型的核心命題。傳統商業智能&#xff08;BI&#xff09;工具雖具備強大的數據處理能力&#xff0c;但其技術門檻高、交互方式復雜等局限性日…
閱讀更多...
鴻蒙OSUniApp開發支持多語言的國際化組件#三方框架 #Uniapp

鴻蒙OSUniApp開發支持多語言的國際化組件#三方框架 #Uniapp

使用UniApp開發支持多語言的國際化組件 在全球化的今天&#xff0c;一個優秀的應用往往需要支持多種語言以滿足不同地區用戶的需求。本文將詳細講解如何在UniApp框架中實現一套完整的國際化解決方案&#xff0c;從而輕松實現多語言切換功能。 前言 去年接手了一個面向國際市場…
閱讀更多...
SpringBoot的外部化配置

SpringBoot的外部化配置

一、什么是外部化配置 外部化配置是指把應用程序中各種可配置的參數、屬性等信息&#xff0c;從代碼內部提取出來&#xff0c;放置在外部的配置文件、數據庫或配置中心等地方&#xff08;比如使用.properties、.yml 或.xml 等格式的文件&#xff09;進行管理。提高應用程序的可…
閱讀更多...
SQL中聯表的運用

SQL中聯表的運用

當出現要大量數據去查詢時&#xff0c;不要一個個去SQL查詢&#xff0c;應該要批量的去查詢。 def batch_cavity_query(self, fuseids): “”“批量查詢cavity信息”“” if not fuseids: return {} # 創建臨時表批量查詢 try:# 創建臨時表self.cursor.execute("CREATE …
閱讀更多...
React面試常問問題詳解

React面試常問問題詳解

以下是30個React面試中常見的問題及簡要解析&#xff0c;涵蓋基礎概念、核心原理、性能優化、Hooks、狀態管理等方面&#xff0c;適用于初中高級開發者準備面試時參考&#xff1a; 一、React 基礎與核心概念 React 是什么&#xff1f; React 是由 Facebook 開發的用于構建用戶界…
閱讀更多...
最新文章

Copyright @ 2022~2023