add new code to support sqlite3 and U8g2

platformio.ini

@@ -22,4 +22,12 @@ lib_deps =
     siara-cc/Sqlite3Esp32 @ ~2.4
 
 # The exact version
-    siara-cc/Sqlite3Esp32 @ 2.4
+    siara-cc/Sqlite3Esp32 @ 2.4
+    olikraus/U8g2 @ ^2.35.17
+
+# Accept only backwards compatible bug fixes
+# (any version with the same major and minor versions, and an equal or greater patch version)
+    olikraus/U8g2 @ ~2.35.17
+
+# The exact version
+    olikraus/U8g2 @ 2.35.17

src/main.cpp

@@ -1,225 +0,0 @@
-/*
-    This example opens Sqlite3 databases from SD Card and
-    retrieves data from them.
-    Before running please copy following files to SD Card:
-    examples/sqlite3_sdmmc/data/mdr512.db
-    examples/sqlite3_sdmmc/data/census2000names.db
-    Connections:
-     * SD Card | ESP32
-     *  DAT2       -
-     *  DAT3       SS (D5)
-     *  CMD        MOSI (D23)
-     *  VSS        GND
-     *  VDD        3.3V
-     *  CLK        SCK (D18)
-     *  DAT0       MISO (D19)
-     *  DAT1       -
-*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <sqlite3.h>
-#include <SPI.h>
-#include <FS.h>
-#include <iostream>
-#include <sstream>
-#include <string>
-#include <sstream>
-#include <vector>
-#include "SD.h"
-//配置数据结构
-using namespace std;
-int OutPutTimes;
-
-String OutPutString = "";
-int keySize;
-
-struct key {
-    String user;
-    String password;
-};
-
-const char* data = "Callback function called";
-static int callback(void *data, int argc, char **argv, char **azColName){
-    int i;
-    Serial.printf("%s: ", (const char*)data);
-    OutPutTimes++;
-
-    Serial.println("----------------------");
-    for (i = 0; i<argc; i++){
-        // 初始化一个空的字符串
-
-
-// 使用sprintf将输出格式化
-       char buffer[50];
-       sprintf(buffer, "%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
-        OutPutString+=buffer;
-// 将格式化后的字符串连接到OutPutString
-     //   OutPutString = const_cast<char *>( "%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
-
-   //     Serial.printf("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
-// 现在OutPutString包含了格式化后的字符串
-
-    }
-
-    Serial.printf("\n");
-    return 0;
-}
-
-int openDb(const char *filename, sqlite3 **db) {
-    int rc = sqlite3_open(filename, db);
-    if (rc) {
-        Serial.printf("Can't open database: %s\n", sqlite3_errmsg(*db));
-        return rc;
-    } else {
-        Serial.printf("Opened database successfully\n");
-    }
-    return rc;
-}
-
-char *zErrMsg = 0;
-int db_exec(sqlite3 *db, const char *sql) {
-    Serial.println(sql);
-    long start = micros();
-    int rc = sqlite3_exec(db, sql, callback, (void*)data, &zErrMsg);
-    if (rc != SQLITE_OK) {
-        Serial.printf("SQL error: %s\n", zErrMsg);
-        sqlite3_free(zErrMsg);
-    } else {
-        Serial.printf("Operation done successfully\n");
-    }
-    Serial.print(F("Time taken:"));
-    Serial.println(micros()-start);
-
-    return rc;
-}
-void removeDuplicates(String arr[], int& n) {//此函数提供方法删除数组内重复的值
-    for (int i = 0; i < n; i++) {
-        for (int j = i + 1; j < n;) {
-            if (arr[i] == arr[j]) {
-                for (int k = j; k < n - 1; k++) {
-                    arr[k] = arr[k + 1];
-                }
-                n--;
-            } else {
-                j++;
-            }
-        }
-    }
-}
-void addSiteDataToArr() {//此函数提供方法使其全部网站保存在数组中，界面分类用
-    sqlite3 *db1;
-
-    char *zErrMsg = 0;
-    int rc;
-
-    SPI.begin();
-    SD.begin();
-
-    sqlite3_initialize();
-
-    // Open database 1
-    if (openDb("/sd/key.db", &db1))
-        return;
-    rc = db_exec(db1, "SELECT * FROM site");
-    if (rc != SQLITE_OK) {
-        sqlite3_close(db1);
-
-        return;
-    }
-    Serial.println(OutPutString);
-
-    Serial.println("All Have Data Times:");
-    const int SiteSize = OutPutTimes;
-
-    String Site[SiteSize];//根据数据长度确认数组长度
-   // std::string OutPutString = "id = 1\nsite = example_site_2\nuser = user1\npassword = password1\nid = 2\nsite = example_site_1\nuser = user3\npassword = password1\nid = 3\nsite = example.com\nuser = john_doe\npassword = password123";
-    String inputString = OutPutString; // 输入的字符串
-    int startIndex = 0;
-    int endIndex = 0;
-
-        for(int i=0;i<OutPutTimes;i++) {
-            startIndex = inputString.indexOf("=", endIndex);
-            if (startIndex == -1) {
-                break; // 如果没有找到等号，退出循环
-            }
-
-            endIndex = inputString.indexOf("\n", startIndex); // 查找换行符的位置
-
-            if (endIndex == -1) {
-                endIndex = inputString.length(); // 如果没有找到换行符，则使用字符串的末尾作为终点
-            }
-
-            String value = inputString.substring(startIndex + 2, endIndex); // 提取等号后面的内容，包括空格
-
-            Serial.println(value);
-            Site[i] = value;
-
-        }
-    removeDuplicates(Site, OutPutTimes);
-    Serial.println("--------分割-----------");
-    for (int i = 0; i < OutPutTimes; i++) {
-        Serial.println(Site[i]);
-    }
-
-\
-    //   OutPutString.
-//
-//    char *token;
-//
-//    token = strtok( OutPutString, "\n");
-//    for (int i = 0; i < OutPutTimes; i++) {
-//        char *value = strchr(token, '=');
-//
-//        if (value != NULL) {
-//            value++; // 移动到等号后面的值
-//            Site[i] = value;
-//        }
-//
-//        token = strtok(NULL, "\n");
-//    }
-
-
-
-
-    Serial.println(OutPutTimes);
-    //初始化
-    OutPutString = "";
-    OutPutTimes = 0;
-    sqlite3_close(db1);
-}
-void setup() {
-    Serial.begin(115200);
-    addSiteDataToArr();
-
-    sqlite3 *db1;
-
-    char *zErrMsg = 0;
-    int rc;
-
-    SPI.begin();
-    SD.begin();
-
-    sqlite3_initialize();
-
-    // Open database 1
-    if (openDb("/sd/key.db", &db1))
-        return;
-
-    rc = db_exec(db1, "SELECT * FROM key;");
-    if (rc != SQLITE_OK) {
-        sqlite3_close(db1);
-
-        return;
-    }
-    Serial.println(OutPutString);
-    OutPutString="";
-    Serial.println("All Have Data Times2:");
-    Serial.println(OutPutTimes);
-
-    sqlite3_close(db1);
-
-
-}
-
-void loop() {
-}