Arduino esp8266 wifi控制oled

Arduino esp8266 wifi控制oled
网上找的
https://hackaday.io/project/6132-esp8266oled
希望有大神可以优化。。

/*
Version 1.0 supports OLED display's with either SDD1306 or with SH1106 controller
*/

#include 
#include 
#include 
#include "font.h"
//#define offset 0x00    // SDD1306                      // offset=0 for SSD1306 controller
#define offset 0x02    // SH1106                       // offset=2 for SH1106 controller
#define OLED_address  0x3c                             // all the OLED's I have seen have this address
#define SSID "*****"                              // insert your SSID
#define PASS "****"                              // insert your password
// ******************* String form to sent to the client-browser ************************************
String form =
  "
"
  "
"
  "
Talk to me :-)
"
  ""
  "
Wassup?  
"
  "";

ESP8266WebServer server(80);                             // HTTP server will listen at port 80
 long period;

/*
  handles the messages coming from the webbrowser, restores a few special characters and 
  constructs the strings that can be sent to the oled display
*/
void handle_msg() {
  clear_display();                        // clears oled
 
  server.send(200, "text/html", form);    // Send same page so they can send another msg

  // Display msg on Oled
  String msg = server.arg("msg");
  Serial.println(msg);
  String decodedMsg = msg;
  // Restore special characters that are misformed to %char by the client browser
  decodedMsg.replace("+", " ");      
  decodedMsg.replace("%21", "!");  
  decodedMsg.replace("%22", "");  
  decodedMsg.replace("%23", "#");
  decodedMsg.replace("%24", "$");
  decodedMsg.replace("%25", "%");  
  decodedMsg.replace("%26", "&");
  decodedMsg.replace("%27", "'");  
  decodedMsg.replace("%28", "(");
  decodedMsg.replace("%29", ")");
  decodedMsg.replace("%2A", "*");
  decodedMsg.replace("%2B", "+");  
  decodedMsg.replace("%2C", ",");  
  decodedMsg.replace("%2F", "/");   
  decodedMsg.replace("%3A", ":");    
  decodedMsg.replace("%3B", ";");  
  decodedMsg.replace("%3C", "<");  
  decodedMsg.replace("%3D", "=");  
  decodedMsg.replace("%3E", ">");
  decodedMsg.replace("%3F", "?");  
  decodedMsg.replace("%40", "@"); 
  //Serial.println(decodedMsg);                   // print original string to monitor
  unsigned int lengte = decodedMsg.length();      // length of received message
  for  (int i=0;i>4)&0x0f));  //set high col address
}


//==========================================================//
// Prints a string regardless the cursor position.
static void sendStr(unsigned char *string)
{
  unsigned char i=0;
  while(*string)
  {
    for(i=0;i<8;i++)
    {
      SendChar(pgm_read_byte(myFont[*string-0x20]+i));
    }
    *string++;
  }
}

//==========================================================//
// Prints a string in coordinates X Y, being multiples of 8.
// This means we have 16 COLS (0-15) and 8 ROWS (0-7).
static void sendStrXY( const char *string, int X, int Y)
{
  setXY(X,Y);
  unsigned char i=0;
  while(*string)
  {
    for(i=0;i<8;i++)
    {
      SendChar(pgm_read_byte(myFont[*string-0x20]+i));
    }
    *string++;
  }
}


//==========================================================//
// Inits oled and draws logo at startup
static void init_OLED(void)
{
  sendcommand(0xae);    //display off
  sendcommand(0xa6);            //Set Normal Display (default)
    // Adafruit Init sequence for 128x64 OLED module
    sendcommand(0xAE);             //DISPLAYOFF
    sendcommand(0xD5);            //SETDISPLAYCLOCKDIV
    sendcommand(0x80);            // the suggested ratio 0x80
    sendcommand(0xA8);            //SSD1306_SETMULTIPLEX
    sendcommand(0x3F);
    sendcommand(0xD3);            //SETDISPLAYOFFSET
    sendcommand(0x0);             //no offset
    sendcommand(0x40 | 0x0);      //SETSTARTLINE
    sendcommand(0x8D);            //CHARGEPUMP
    sendcommand(0x14);
    sendcommand(0x20);             //MEMORYMODE
    sendcommand(0x00);             //0x0 act like ks0108
    
    //sendcommand(0xA0 | 0x1);      //SEGREMAP   //Rotate screen 180 deg
    sendcommand(0xA0);
    
    //sendcommand(0xC8);            //COMSCANDEC  Rotate screen 180 Deg
    sendcommand(0xC0);
    
    sendcommand(0xDA);            //0xDA
    sendcommand(0x12);           //COMSCANDEC
    sendcommand(0x81);           //SETCONTRAS
    sendcommand(0xCF);           //
    sendcommand(0xd9);          //SETPRECHARGE 
    sendcommand(0xF1); 
    sendcommand(0xDB);        //SETVCOMDETECT                
    sendcommand(0x40);
    sendcommand(0xA4);        //DISPLAYALLON_RESUME        
    sendcommand(0xA6);        //NORMALDISPLAY             

  clear_display();
  sendcommand(0x2e);            // stop scroll
  //----------------------------REVERSE comments----------------------------//
    sendcommand(0xa0);    //seg re-map 0->127(default)
    sendcommand(0xa1);    //seg re-map 127->0
    sendcommand(0xc8);
    delay(1000);
  //----------------------------REVERSE comments----------------------------//
  // sendcommand(0xa7);  //Set Inverse Display  
  // sendcommand(0xae);   //display off
  sendcommand(0x20);            //Set Memory Addressing Mode
  sendcommand(0x00);            //Set Memory Addressing Mode ab Horizontal addressing mode
  //  sendcommand(0x02);         // Set Memory Addressing Mode ab Page addressing mode(RESET)  
}