SSD1306 128*32屏幕驱动

最近在做一个小项目，使用合宙air001做主控，arduino开发环境，项目设计一个小屏作为显示，本身使用u8g2库，奈何这个air001空间太小，没写多少就把程序储存空间占满了，log也没办法打印，对于调试分析问题很大，所以想着自己写一个驱动用，

在网上搜索后，现有的代码移植来难以正常显示，没过深研究，一直在摸索修改代码，

经过多天的试错后，基本上可以仿造u8g2的效果，避免以后重复造轮子，特来分享给大家参考。

主要是两个驱动文件，ssd1306.h是字库文件

#ifndef SSD1306_H
#define SSD1306_H#include <stdint.h>// 字符像素数据（以ASCII字符集中的部分字符为例）
const uint8_t font[105][5] = {{0x00, 0x00, 0x00, 0x00, 0x00}, // ASCII 32 (Space){0x00, 0x00, 0x5F, 0x00, 0x00}, // ASCII 33 (!){0x00, 0x07, 0x00, 0x07, 0x00}, // ASCII 34 ("){0x14, 0x7F, 0x14, 0x7F, 0x14}, // ASCII 35 (#){0x24, 0x2A, 0x7F, 0x2A, 0x12}, // ASCII 36 ($){0x23, 0x13, 0x08, 0x64, 0x62}, // ASCII 37 (%){0x36, 0x49, 0x55, 0x22, 0x50}, // ASCII 38 (&){0x00, 0x05, 0x03, 0x00, 0x00}, // ASCII 39 ('){0x00, 0x1C, 0x22, 0x41, 0x00}, // ASCII 40 ((){0x00, 0x41, 0x22, 0x1C, 0x00}, // ASCII 41 ()){0x14, 0x08, 0x3E, 0x08, 0x14}, // ASCII 42 (*){0x08, 0x08, 0x3E, 0x08, 0x08}, // ASCII 43 (+){0x00, 0x50, 0x30, 0x00, 0x00}, // ASCII 44 (,){0x08, 0x08, 0x08, 0x08, 0x08}, // ASCII 45 (-){0x00, 0x60, 0x60, 0x00, 0x00}, // ASCII 46 (.){0x20, 0x10, 0x08, 0x04, 0x02}, // ASCII 47 (/){0x3E, 0x51, 0x49, 0x45, 0x3E}, // ASCII 48 (0){0x00, 0x42, 0x7F, 0x40, 0x00}, // ASCII 49 (1){0x42, 0x61, 0x51, 0x49, 0x46}, // ASCII 50 (2){0x21, 0x41, 0x45, 0x4B, 0x31}, // ASCII 51 (3)// {0x18, 0x14, 0x1E, 0x14, 0x18}, // ASCII 52 (4)// {0x12, 0x51, 0x51, 0x49, 0x46}, // ASCII 53 (5)// {0x12, 0x51, 0x59, 0x4F, 0x46}, // ASCII 54 (6)// {0x40, 0x48, 0x48, 0x48, 0x30}, // ASCII 55 (7){0x10, 0x18, 0x1C, 0x18, 0x10}, // ASCII 52 (4){0x12, 0x51, 0x51, 0x49, 0x46}, // ASCII 53 (5){0x12, 0x51, 0x59, 0x4F, 0x46}, // ASCII 54 (6){0x40, 0x48, 0x48, 0x48, 0x30}, // ASCII 55 (7){0x36, 0x49, 0x49, 0x49, 0x36}, // ASCII 56 (8){0x06, 0x49, 0x49, 0x29, 0x1E}, // ASCII 57 (9){0x00, 0x36, 0x36, 0x00, 0x00}, // ASCII 58 (:){0x00, 0x56, 0x36, 0x00, 0x00}, // ASCII 59 (;){0x08, 0x14, 0x22, 0x41, 0x00}, // ASCII 60 (<){0x14, 0x14, 0x14, 0x14, 0x14}, // ASCII 61 (=){0x00, 0x41, 0x22, 0x14, 0x08}, // ASCII 62 (>){0x02, 0x01, 0x51, 0x09, 0x06}, // ASCII 63 (?){0x32, 0x49, 0x79, 0x41, 0x3E}, // ASCII 64 (@){0x7E, 0x11, 0x11, 0x11, 0x7E}, // ASCII 65 (A){0x7F, 0x49, 0x49, 0x49, 0x36}, // ASCII 66 (B){0x3E, 0x41, 0x41, 0x41, 0x22}, // ASCII 67 (C){0x7F, 0x41, 0x41, 0x22, 0x1C}, // ASCII 68 (D){0x7F, 0x49, 0x49, 0x49, 0x41}, // ASCII 69 (E){0x7F, 0x09, 0x09, 0x09, 0x01}, // ASCII 70 (F){0x3E, 0x41, 0x49, 0x49, 0x7A}, // ASCII 71 (G){0x7F, 0x08, 0x08, 0x08, 0x7F}, // ASCII 72 (H){0x00, 0x41, 0x7F, 0x41, 0x00}, // ASCII 73 (I){0x20, 0x40, 0x41, 0x3F, 0x01}, // ASCII 74 (J){0x7F, 0x08, 0x14, 0x22, 0x41}, // ASCII 75 (K){0x7F, 0x40, 0x40, 0x40, 0x40}, // ASCII 76 (L){0x7F, 0x02, 0x0C, 0x02, 0x7F}, // ASCII 77 (M){0x7F, 0x04, 0x08, 0x10, 0x7F}, // ASCII 78 (N){0x3E, 0x41, 0x41, 0x41, 0x3E}, // ASCII 79 (O){0x7F, 0x09, 0x09, 0x09, 0x06}, // ASCII 80 (P){0x3E, 0x41, 0x51, 0x21, 0x5E}, // ASCII 81 (Q){0x7F, 0x09, 0x19, 0x29, 0x46}, // ASCII 82 (R){0x46, 0x49, 0x49, 0x49, 0x31}, // ASCII 83 (S){0x01, 0x01, 0x7F, 0x01, 0x01}, // ASCII 84 (T){0x3F, 0x40, 0x40, 0x40, 0x3F}, // ASCII 85 (U){0x1F, 0x20, 0x40, 0x20, 0x1F}, // ASCII 86 (V){0x3F, 0x40, 0x38, 0x40, 0x3F}, // ASCII 87 (W){0x63, 0x14, 0x08, 0x14, 0x63}, // ASCII 88 (X){0x07, 0x08, 0x70, 0x08, 0x07}, // ASCII 89 (Y){0x61, 0x51, 0x49, 0x45, 0x43}, // ASCII 90 (Z){0x00, 0x7F, 0x41, 0x41, 0x00}, // ASCII 91 ([){0x02, 0x04, 0x08, 0x10, 0x20}, // ASCII 92 (\){0x00, 0x41, 0x41, 0x7F, 0x00}, // ASCII 93 (]){0x04, 0x02, 0x01, 0x02, 0x04}, // ASCII 94 (^){0x40, 0x40, 0x40, 0x40, 0x40}, // ASCII 95 (_){0x00, 0x03, 0x07, 0x08, 0x00}, // ASCII 96 (`){0x20, 0x54, 0x54, 0x54, 0x78}, // ASCII 97 (a){0x7F, 0x48, 0x44, 0x44, 0x38}, // ASCII 98 (b){0x38, 0x44, 0x44, 0x44, 0x20}, // ASCII 99 (c){0x38, 0x44, 0x44, 0x48, 0x7F}, // ASCII 100 (d){0x38, 0x54, 0x54, 0x54, 0x18}, // ASCII 101 (e){0x08, 0x7E, 0x09, 0x01, 0x02}, // ASCII 102 (f){0x0C, 0x52, 0x52, 0x52, 0x3E}, // ASCII 103 (g){0x7F, 0x08, 0x04, 0x04, 0x78}, // ASCII 104 (h){0x00, 0x44, 0x7D, 0x40, 0x00}, // ASCII 105 (i){0x20, 0x40, 0x44, 0x3D, 0x00}, // ASCII 106 (j){0x7F, 0x10, 0x28, 0x44, 0x00}, // ASCII 107 (k){0x00, 0x41, 0x7F, 0x40, 0x00}, // ASCII 108 (l){0x7C, 0x04, 0x18, 0x04, 0x78}, // ASCII 109 (m){0x7C, 0x08, 0x04, 0x04, 0x78}, // ASCII 110 (n){0x38, 0x44, 0x44, 0x44, 0x38}, // ASCII 111 (o){0x7C, 0x14, 0x14, 0x14, 0x08}, // ASCII 112 (p){0x08, 0x14, 0x14, 0x14, 0x7C}, // ASCII 113 (q){0x7C, 0x08, 0x04, 0x04, 0x08}, // ASCII 114 (r){0x48, 0x54, 0x54, 0x54, 0x20}, // ASCII 115 (s){0x04, 0x3F, 0x44, 0x40, 0x20}, // ASCII 116 (t){0x3C, 0x40, 0x40, 0x20, 0x7C}, // ASCII 117 (u){0x1C, 0x20, 0x40, 0x20, 0x1C}, // ASCII 118 (v){0x3C, 0x40, 0x30, 0x40, 0x3C}, // ASCII 119 (w){0x44, 0x28, 0x10, 0x28, 0x44}, // ASCII 120 (x){0x0C, 0x50, 0x50, 0x50, 0x3C}, // ASCII 121 (y){0x44, 0x64, 0x54, 0x4C, 0x44}, // ASCII 122 (z){0x00, 0x08, 0x36, 0x41, 0x00}, // ASCII 123 ({){0x00, 0x00, 0x7F, 0x00, 0x00}, // ASCII 124 (|){0x00, 0x41, 0x36, 0x08, 0x00}, // ASCII 125 (}){0x08, 0x08, 0x2A, 0x1C, 0x08}, // ASCII 126 (~)// 以下是ASCII的扩展字符，通常用于表示一些特殊符号或控制字符{0x00, 0x00, 0x00, 0x00, 0x00}, // ASCII 127 (DEL){0x18, 0x18, 0x7E, 0x18, 0x18}, // 示例字符：块字符（自定义）{0x18, 0x18, 0x18, 0x18, 0x18}, // 示例字符：全亮（自定义）{0x00, 0x00, 0x18, 0x00, 0x00}, // 示例字符：上点（自定义）{0x00, 0x00, 0x18, 0x18, 0x00}, // 示例字符：右点（自定义）{0x00, 0x0F, 0x08, 0x0F, 0x00}, // 示例字符：左箭头（自定义）{0x00, 0x0F, 0x18, 0x0F, 0x00}, // 示例字符：右箭头（自定义）{0x18, 0x06, 0x0F, 0x06, 0x18}, // 示例字符：上箭头（自定义）{0x06, 0x18, 0x0F, 0x18, 0x06}  // 示例字符：下箭头（自定义）
};
const uint8_t lage_font[105][8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 空格0x00, 0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x00, // !0x00, 0x07, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, // "0x14, 0x7F, 0x14, 0x7F, 0x14, 0x00, 0x00, 0x00, // #0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x00, 0x00, 0x00, // $0x23, 0x13, 0x08, 0x64, 0x62, 0x00, 0x00, 0x00, // %0x36, 0x49, 0x55, 0x22, 0x50, 0x00, 0x00, 0x00, // &0x00, 0x05, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // '0x00, 0x1C, 0x22, 0x41, 0x00, 0x00, 0x00, 0x00, // (0x00, 0x41, 0x22, 0x1C, 0x00, 0x00, 0x00, 0x00, // )0x08, 0x2A, 0x1C, 0x2A, 0x08, 0x00, 0x00, 0x00, // *0x08, 0x08, 0x3E, 0x08, 0x08, 0x00, 0x00, 0x00, // +0x00, 0x50, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, // ,0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, // -0x00, 0x60, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, // .0x20, 0x10, 0x08, 0x04, 0x02, 0x00, 0x00, 0x00, // /0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00, 0x00, 0x00, // 00x00, 0x42, 0x7F, 0x40, 0x00, 0x00, 0x00, 0x00, // 10x42, 0x61, 0x51, 0x49, 0x46, 0x00, 0x00, 0x00, // 20x21, 0x41, 0x45, 0x4B, 0x31, 0x00, 0x00, 0x00, // 30x18, 0x14, 0x12, 0x7F, 0x10, 0x00, 0x00, 0x00, // 40x27, 0x45, 0x45, 0x45, 0x39, 0x00, 0x00, 0x00, // 50x3C, 0x4A, 0x49, 0x49, 0x30, 0x00, 0x00, 0x00, // 60x01, 0x71, 0x09, 0x05, 0x03, 0x00, 0x00, 0x00, // 70x36, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00, 0x00, // 80x06, 0x49, 0x49, 0x29, 0x1E, 0x00, 0x00, 0x00, // 90x00, 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, // :0x00, 0x56, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, // ;0x00, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00, 0x00, // <0x14, 0x14, 0x14, 0x14, 0x14, 0x00, 0x00, 0x00, // =0x41, 0x22, 0x14, 0x08, 0x00, 0x00, 0x00, 0x00, // >0x02, 0x01, 0x51, 0x09, 0x06, 0x00, 0x00, 0x00, // ?0x32, 0x49, 0x79, 0x41, 0x3E, 0x00, 0x00, 0x00, // @0x7E, 0x11, 0x11, 0x11, 0x7E, 0x00, 0x00, 0x00, // A0x7F, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00, 0x00, // B0x3E, 0x41, 0x41, 0x41, 0x22, 0x00, 0x00, 0x00, // C0x7F, 0x41, 0x41, 0x22, 0x1C, 0x00, 0x00, 0x00, // D0x7F, 0x49, 0x49, 0x49, 0x41, 0x00, 0x00, 0x00, // E0x7F, 0x09, 0x09, 0x09, 0x01, 0x00, 0x00, 0x00, // F0x3E, 0x41, 0x49, 0x49, 0x7A, 0x00, 0x00, 0x00, // G0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00, 0x00, 0x00, // H0x00, 0x41, 0x7F, 0x41, 0x00, 0x00, 0x00, 0x00, // I0x20, 0x40, 0x41, 0x3F, 0x01, 0x00, 0x00, 0x00, // J0x7F, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00, 0x00, // K0x7F, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00, 0x00, // L0x7F, 0x02, 0x04, 0x02, 0x7F, 0x00, 0x00, 0x00, // M0x7F, 0x04, 0x08, 0x10, 0x7F, 0x00, 0x00, 0x00, // N0x3E, 0x41, 0x41, 0x41, 0x3E, 0x00, 0x00, 0x00, // O0x7F, 0x09, 0x09, 0x09, 0x06, 0x00, 0x00, 0x00, // P0x3E, 0x41, 0x51, 0x21, 0x5E, 0x00, 0x00, 0x00, // Q0x7F, 0x09, 0x19, 0x29, 0x46, 0x00, 0x00, 0x00, // R0x46, 0x49, 0x49, 0x49, 0x31, 0x00, 0x00, 0x00, // S0x01, 0x01, 0x7F, 0x01, 0x01, 0x00, 0x00, 0x00, // T0x3F, 0x40, 0x40, 0x40, 0x3F, 0x00, 0x00, 0x00, // U0x1F, 0x20, 0x40, 0x20, 0x1F, 0x00, 0x00, 0x00, // V0x7F, 0x20, 0x18, 0x20, 0x7F, 0x00, 0x00, 0x00, // W0x63, 0x14, 0x08, 0x14, 0x63, 0x00, 0x00, 0x00, // X0x03, 0x04, 0x78, 0x04, 0x03, 0x00, 0x00, 0x00, // Y0x61, 0x51, 0x49, 0x45, 0x43, 0x00, 0x00, 0x00, // Z0x00, 0x00, 0x7F, 0x41, 0x41, 0x00, 0x00, 0x00, // [0x02, 0x04, 0x08, 0x10, 0x20, 0x00, 0x00, 0x00, // 0x41, 0x41, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, // ]0x04, 0x02, 0x01, 0x02, 0x04, 0x00, 0x00, 0x00, // ^0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00, 0x00, // _0x00, 0x01, 0x02, 0x04, 0x00, 0x00, 0x00, 0x00, // `0x20, 0x54, 0x54, 0x54, 0x78, 0x00, 0x00, 0x00, // a0x7F, 0x48, 0x44, 0x44, 0x38, 0x00, 0x00, 0x00, // b0x38, 0x44, 0x44, 0x44, 0x20, 0x00, 0x00, 0x00, // c0x38, 0x44, 0x44, 0x48, 0x7F, 0x00, 0x00, 0x00, // d0x38, 0x54, 0x54, 0x54, 0x18, 0x00, 0x00, 0x00, // e0x08, 0x7E, 0x09, 0x01, 0x02, 0x00, 0x00, 0x00, // f0x08, 0x14, 0x54, 0x54, 0x3C, 0x00, 0x00, 0x00, // g0x7F, 0x08, 0x04, 0x04, 0x78, 0x00, 0x00, 0x00, // h0x00, 0x44, 0x7D, 0x40, 0x00, 0x00, 0x00, 0x00, // i0x20, 0x40, 0x44, 0x3D, 0x00, 0x00, 0x00, 0x00, // j0x00, 0x7F, 0x10, 0x28, 0x44, 0x00, 0x00, 0x00, // k0x00, 0x41, 0x7F, 0x40, 0x00, 0x00, 0x00, 0x00, // l0x7C, 0x04, 0x18, 0x04, 0x78, 0x00, 0x00, 0x00, // m0x7C, 0x08, 0x04, 0x04, 0x78, 0x00, 0x00, 0x00, // n0x38, 0x44, 0x44, 0x44, 0x38, 0x00, 0x00, 0x00, // o0x7C, 0x14, 0x14, 0x14, 0x08, 0x00, 0x00, 0x00, // p0x08, 0x14, 0x14, 0x18, 0x7C, 0x00, 0x00, 0x00, // q0x7C, 0x08, 0x04, 0x04, 0x08, 0x00, 0x00, 0x00, // r0x48, 0x54, 0x54, 0x54, 0x20, 0x00, 0x00, 0x00, // s0x04, 0x3F, 0x44, 0x40, 0x20, 0x00, 0x00, 0x00, // t0x3C, 0x40, 0x40, 0x20, 0x7C, 0x00, 0x00, 0x00, // u0x1C, 0x20, 0x40, 0x20, 0x1C, 0x00, 0x00, 0x00, // v0x3C, 0x40, 0x30, 0x40, 0x3C, 0x00, 0x00, 0x00, // w0x44, 0x28, 0x10, 0x28, 0x44, 0x00, 0x00, 0x00, // x0x0C, 0x50, 0x50, 0x50, 0x3C, 0x00, 0x00, 0x00, // y0x44, 0x64, 0x54, 0x4C, 0x44, 0x00, 0x00, 0x00, // z0x00, 0x08, 0x36, 0x41, 0x00, 0x00, 0x00, 0x00, // {0x00, 0x00, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, // |0x00, 0x41, 0x36, 0x08, 0x00, 0x00, 0x00, 0x00, // }0x08, 0x08, 0x2A, 0x1C, 0x08, 0x00, 0x00, 0x00, // ~0x08, 0x1C, 0x2A, 0x08, 0x08, 0x00, 0x00, 0x00  // DEL
};// 初始化OLED屏幕
void OLED_Init();// 在屏幕上显示字符串
void OLED_Display_String(unsigned char x, unsigned char y, const char *str);#endif // SSD1306_H

ssd1306.cpp

#include <Wire.h>
#include "ssd1306.h"
#define OLED_ADDRESS 0x3C // OLED的I2C地址，根据连接方式可能为0x3C或0x3D// 发送命令到OLED
void ssd1306_command(uint8_t command)
{Wire.beginTransmission(OLED_ADDRESS);Wire.write(0x00); // 控制字节，表示命令Wire.write(command);Wire.endTransmission();
}// 发送数据到OLED
void ssd1306_sendData(uint8_t data)
{Wire.beginTransmission(OLED_ADDRESS);Wire.write(0x40); // 控制字节，表示数据Wire.write(data);Wire.endTransmission();
}// 设置OLED显示位置
void OLED_Set_Pos(unsigned char x, unsigned char y)
{ssd1306_command(0xb0 + y);ssd1306_command(((x & 0xf0) >> 4) | 0x10);ssd1306_command((x & 0x0f));
}void OLED_Display_On(void)
{ssd1306_command(0X8D);ssd1306_command(0X14);ssd1306_command(0XAF);
}void OLED_Display_Off(void)
{ssd1306_command(0X8D);ssd1306_command(0X10);ssd1306_command(0XAE);
}void OLED_Clear(void)
{uint8_t page, n;for (page = 0; page < 8; page++){                               // 遍历所有页ssd1306_command(0x21);        // 设置列地址ssd1306_command(0x00);        // 列地址起始位置ssd1306_command(0x7F);        // 列地址结束位置ssd1306_command(0x22);        // 设置页地址ssd1306_command(0xB0 | page); // 页地址起始位置ssd1306_command(0x07);        // 页地址结束位置for (n = 0; n < 128; n++)ssd1306_sendData(0);}
}
void OLED_On(void)
{uint8_t page, n;for (page = 0; page < 8; page++){                               // 遍历所有页ssd1306_command(0x21);        // 设置列地址ssd1306_command(0x00);        // 列地址起始位置ssd1306_command(0x7F);        // 列地址结束位置ssd1306_command(0x22);        // 设置页地址ssd1306_command(0xB0 | page); // 页地址起始位置ssd1306_command(0x07);        // 页地址结束位置for (n = 0; n < 128; n++)ssd1306_sendData(0xFF);}
}// 显示单个字符
void OLED_Display_Char(unsigned char x, unsigned char y, unsigned char ch)
{OLED_Set_Pos(x, y);for (int i = 0; i < 8; i++){ssd1306_sendData(lage_font[ch - 32][i]);}
}// 显示字符串
void OLED_Display_String(unsigned char x, unsigned char y, const char *str)
{while (*str){OLED_Display_Char(x, y, *str++);x += 6; // 每个字符占用9个像素宽度（8个像素+1个像素间隔）}
}void OLED_Init()
{Wire.begin(); // 初始化I2Cdelay(100);   // 稳定I2C总线// 初始化OLED屏幕ssd1306_command(0xAE); // 关闭显示ssd1306_command(0x20); // 设置内存地址模式ssd1306_command(0x10); // 水平地址模式ssd1306_command(0xB0); // 设置页地址ssd1306_command(0xC8); // 设置COM输出扫描方向ssd1306_command(0x00); // 设置低列地址ssd1306_command(0x10); // 设置高列地址ssd1306_command(0x40); // 设置起始行地址ssd1306_command(0x81); // 设置对比度控制ssd1306_command(0xFF);ssd1306_command(0xA1); // 设置段重映射ssd1306_command(0xA6); // 正常显示ssd1306_command(0xA8); // 设置复用率ssd1306_command(0x1F);ssd1306_command(0xAD); // 设置DC-DC转换器ssd1306_command(0x8A);ssd1306_command(0xD3); // 设置显示偏移ssd1306_command(0x00);ssd1306_command(0xD5); // 设置显示时钟分频因子/振荡器频率ssd1306_command(0xF0);ssd1306_command(0xD9); // 设置预充电周期ssd1306_command(0x22);ssd1306_command(0xDA); // 设置COM引脚硬件配置ssd1306_command(0x02);ssd1306_command(0xDB); // 设置VCOMH取消选择级别ssd1306_command(0x20);ssd1306_command(0x8D); // 设置充电泵ssd1306_command(0x14);ssd1306_command(0xAF); // 打开显示OLED_Clear();
}// void setup()
// {
//   Wire.begin(); // 初始化I2C
//   delay(100);   // 稳定I2C总线//   OLED_Init();
//   // 清屏
//   OLED_Clear();
// }
// uint8_t progress = 0;
// void loop()
// {
//   // 更新进度条进度（示例中每秒增加10）
//   progress += 2;
//   if (progress > 128)
//   {
//     progress = 0;
//   }
//   delay(50); // 每秒更新一次//   // 清除屏幕
//   // OLED_Clear();//   // 绘制进度条
//   // for (int x = 0; x < 128; x++)
//   // {
//   //   OLED_Set_Pos(x, 2);
//   //   if (x < progress)
//   //   {
//   //     ssd1306_sendData(0xFF); // 进度条部分填充白色
//   //   }
//   //   else
//   //   {
//   //     ssd1306_sendData(0x00); // 其余部分填充黑色
//   //   }
//   // }//   // 显示字符串
//   //OLED_Display_String(0, 0, "Hello, OLED!");
//   char line1[32];
//   snprintf(line1, sizeof(line1), "F:%3d   D:%3d", 20, progress);
//   OLED_Display_String(0, 0, line1);
//   // 显示第二行
//   char line2[32];
//   snprintf(line2, sizeof(line2), "EF:%3d   ED:%3d", 20, progress);
//   OLED_Display_String(0, 2, line2);
//   char line3[32];
//   snprintf(line3, sizeof(line3), "step:%3d", progress);
//   OLED_Display_String(0, 3, line3);
// }

使用时如下：

    // 初始化OLED显示屏OLED_Init();void updateOLEDDisplay()
{if (CounterChanged){CounterChanged = false;// 显示第一行char line1[32];// u8x8.setFont(u8x8_font_torussansbold8_r);snprintf(line1, sizeof(line1), "F:%3d    D:%3d", frequency, dutyCycle);OLED_Display_String(0, 0, line1);// 显示第二行char line2[32];snprintf(line2, sizeof(line2), "EF:%3d   ED:%3d", storedFrequency, storedDutyCycle);OLED_Display_String(0, 2, line2);char line3[32];snprintf(line3, sizeof(line3), "step:%3d", Count_step);OLED_Display_String(0, 3, line3);}
}