Arduino找不到ESP8266 07wifi模块，求解决

Posted 2023-05-08

前些日子在奥松买了个wifi模块，用motordrive扩展板（盾板）装在UNO r3板子上，wifi模块用4p的杜邦线接在扩展板的uart处，rx→rxd，tx→txd，+→5v，-→GND。使用Arduino IDE的串口监视器和另外一款串口软件输入AT指令都无法与WiFi模块建立通信（有去无回），手机似乎也搜不到WiFi。希望各位大神帮忙解决！谢谢！另外还想问一下奥松的WiFi模块默认的设备名称是ESP8266吗？谢谢！

RX、TX的两根线（红黑线）交叉接，也就是RX-TX，TX-RX，把其中一个接头上的红黑互换一下位置即可。 参考技术A TX -- RX
RX--TX 即可

Arduino +合宙ESP32C3 +1.8/1.44 寸TFT液晶屏驱动显示

Arduino +合宙ESP32C3 +1.8/1.44 寸TFT液晶屏驱动显示

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• Arduino IDE找不到ESP32C3的请看我前面那篇文章《合宙ESP32C3 Arduino 初探教程》，当然也可以参考其他优秀的文章，来搭建esp32C3。

合宙ESP32C3配合合宙的1.8寸TFT液晶屏屏幕

引脚定义

#define TFT_SCLK 2  // Clock out  
#define TFT_MOSI 3  // Data out
#define TFT_RST  10      
#define TFT_DC   6     
#define TFT_CS   7
#define TFT_BL   11  （可不接）

• 从上面的两张图的引脚分布和LCD屏幕引脚定义正好是相对应的。可以直接对插。
  
• 如果是买的合体的，那么只需要修改setup函数中的屏幕初始化函数：tft.initR(INITR_144GREENTAB);启用这个，注释掉原1.8的屏幕的初始化函数tft.initR(INITR_BLACKTAB); 即可点亮。
  

所需库

• Adafruit_GFX：
  

• Adafruit_BusIO：
  

• Adafruit_ST7735_and_ST7789_Library：
  

驱动代码

/*所需库点击这里会自动打开管理库页面: http://librarymanager/All#Adafruit_BusIO

* This is an example sketch that shows how to toggle the display
* on and off at runtime to avoid screen burn-in.
*
* The sketch also demonstrates how to erase a previous value by re-drawing the
* older value in the screen background color prior to writing a new value in
* the same location. This avoids the need to call fillScreen() to erase the
* entire screen followed by a complete redraw of screen contents.
*
* Originally written by Phill Kelley. BSD license.
* Adapted for ST77xx by Melissa LeBlanc-Williams
*/

#include <Adafruit_GFX.h>    //点击这里会自动打开管理库页面: http://librarymanager/All#Adafruit_GFX
#include <Adafruit_ST7735.h> // 点击这里会自动打开管理库页面: http://librarymanager/All#Adafruit_ST7735
//#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>

#ifdef ADAFRUIT_HALLOWING
  #define TFT_CS        7 // Hallowing display control pins: chip select
  #define TFT_RST       10 // Display reset
  #define TFT_DC        6 // Display data/command select
  #define TFT_BACKLIGHT  11 // Display backlight pin

#elif defined(ARDUINO_FEATHER_ESP32) // Feather Huzzah32

#define TFT_SCLK 2  // Clock out  
#define TFT_MOSI 3  // Data out
#define TFT_RST  10      
#define TFT_DC   6     
#define TFT_CS   7
#define TFT_BL   11  


#elif defined(ESP8266)
  #define TFT_CS         4
  #define TFT_RST        16                                            
  #define TFT_DC         5

#else
  // For the breakout board, you can use any 2 or 3 pins.
  // These pins will also work for the 1.8" TFT shield.
  #define TFT_CS        7
  #define TFT_RST        10 // Or set to -1 and connect to Arduino RESET pin
  #define TFT_DC         6
#endif

#define SerialDebugging true

// OPTION 1 (recommended) is to use the HARDWARE SPI pins, which are unique
// to each board and not reassignable. For Arduino Uno: MOSI = pin 11 and
// SCLK = pin 13. This is the fastest mode of operation and is required if
// using the breakout board's microSD card.

// For 1.44" and 1.8" TFT with ST7735 (including HalloWing) use:
//Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

// For 1.3", 1.54", and 2.0" TFT with ST7789:
//Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);

// OPTION 2 lets you interface the display using ANY TWO or THREE PINS,
// tradeoff being that performance is not as fast as hardware SPI above.
#define TFT_MOSI 3  // Data out
#define TFT_SCLK 2  // Clock out
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

// connect a push button between ground and...
const uint8_t   Button_pin              = 4;

// color definitions
const uint16_t  Display_Color_Black        = 0x0000;    //黑色
const uint16_t  Display_Color_Red          = 0x001F;    //红色
const uint16_t  Display_Color_Blue         = 0xF800;    //蓝色
const uint16_t  Display_Color_Green        = 0x07E0;    //绿色
const uint16_t  Display_Color_Yellow       = 0x07FF;    //黄色
const uint16_t  Display_Color_Magenta      = 0xF81F;    //洋红
const uint16_t  Display_Color_Cyan         = 0xFFE0;    //青色
const uint16_t  Display_Color_White        = 0xFFFF;    //白色

// The colors we actually want to use
uint16_t        Display_Text_Color         = Display_Color_Black;
uint16_t        Display_Backround_Color    = Display_Color_Yellow;

// assume the display is off until configured in setup()
bool            isDisplayVisible        = false;

// declare size of working string buffers. Basic strlen("d hh:mm:ss") = 10
const size_t    MaxString               = 16;

// the string being displayed on the SSD1331 (initially empty)
char oldTimeString[MaxString]           =  0 ;

// the interrupt service routine affects this
volatile bool   isButtonPressed         = false;


// interrupt service routine
void senseButtonPressed() 
    if (!isButtonPressed) 
        isButtonPressed = true;
    



void displayUpTime() 

    // calculate seconds, truncated to the nearest whole second
    unsigned long upSeconds = millis() / 1000;

    // calculate days, truncated to nearest whole day
    unsigned long days = upSeconds / 86400;

    // the remaining hhmmss are
    upSeconds = upSeconds % 86400;

    // calculate hours, truncated to the nearest whole hour
    unsigned long hours = upSeconds / 3600;

    // the remaining mmss are
    upSeconds = upSeconds % 3600;

    // calculate minutes, truncated to the nearest whole minute
    unsigned long minutes = upSeconds / 60;

    // the remaining ss are
    upSeconds = upSeconds % 60;

    // allocate a buffer
    char newTimeString[MaxString] =  0 ;

    // construct the string representation
    sprintf(
        newTimeString,
        "%lu %02lu:%02lu:%02lu",
        days, hours, minutes, upSeconds
    );

    // has the time string changed since the last tft update?
    if (strcmp(newTimeString,oldTimeString) != 0) 

        // yes! home the cursor
        tft.setCursor(10,80);   //(列，行)

        // change the text color to the background color
        tft.setTextColor(Display_Backround_Color);

        // redraw the old value to erase
        tft.print(oldTimeString);

        // home the cursor
        tft.setCursor(10,80);
        
        // change the text color to foreground color
        tft.setTextColor(Display_Text_Color);
   
        // draw the new time value
        tft.print(newTimeString);
   
        // and remember the new value
        strcpy(oldTimeString,newTimeString);
    


void setup() 

    // button press pulls pin LOW so configure HIGH
    pinMode(Button_pin,INPUT_PULLUP);

    // use an interrupt to sense when the button is pressed
    attachInterrupt(digitalPinToInterrupt(Button_pin), senseButtonPressed, FALLING);

    #if (SerialDebugging)
    Serial.begin(115200); while (!Serial); Serial.println();
    #endif

    // settling time
    delay(250);

    // ignore any power-on-reboot garbage
    isButtonPressed = false;

    #ifdef ADAFRUIT_HALLOWING
      // HalloWing is a special case. It uses a ST7735R display just like the
      // breakout board, but the orientation and backlight control are different.
      tft.initR(INITR_HALLOWING);        // Initialize HalloWing-oriented screen
      pinMode(TFT_BACKLIGHT, OUTPUT);
      digitalWrite(TFT_BACKLIGHT, HIGH); // Backlight on
    #else
      // Use this initializer if using a 1.8" TFT screen:128x160
     tft.initR(INITR_BLACKTAB);      // Init ST7735S chip, black tab
   
      // OR use this initializer (uncomment) if using a 1.44" TFT:
      //tft.initR(INITR_144GREENTAB); // Init ST7735R chip, green tab
   
      // OR use this initializer (uncomment) if using a 0.96" 180x60 TFT:
     // tft.initR(INITR_MINI160x80);  // Init ST7735S mini display
   
      // OR use this initializer (uncomment) if using a 1.54" 240x240 TFT:
      //tft.init(240, 240);           // Init ST7789 240x240

      // OR use this initializer (uncomment) if using a 2.0" 320x240 TFT:
      //tft.init(240, 320);           // Init ST7789 320x240
  
      // SPI speed defaults to SPI_DEFAULT_FREQ defined in the library, you can override it here
      // Note that speed allowable depends on chip and quality of wiring, if you go too fast, you
      // may end up with a black screen some times, or all the time.
      //tft.setSPISpeed(40000000);
    #endif

    // initialise the display
    tft.setFont();
    tft.fillScreen(Display_Backround_Color);
    tft.setTextColor(Display_Text_Color);
    tft.setTextSize(1);

    // the display is now on
    isDisplayVisible = true;




void loop() 

    // unconditional display, regardless of whether display is visible
    displayUpTime();

    // has the button been pressed?
    if (isButtonPressed) 
        
        // yes! toggle display visibility
        isDisplayVisible = !isDisplayVisible;

        // apply
        tft.enableDisplay(isDisplayVisible);

        #if (SerialDebugging)
        Serial.print("button pressed @ ");
        Serial.print(millis());
        Serial.print(", display is now ");
        Serial.println((isDisplayVisible ? "ON" : "OFF"));
        #endif

        // confirm button handled
        isButtonPressed = false;
        
    

    // no need to be in too much of a hurry
    delay(100);
   

• 编译信息

使用 1.10.10  版本的库 Adafruit_GFX 在文件夹： C:\\Users\\Administrator\\Documents\\Arduino\\libraries\\Adafruit_GFX 
使用 1.7.3  版本的库 Adafruit_ST7735_and_ST7789_Library 在文件夹： C:\\Users\\Administrator\\Documents\\Arduino\\libraries\\Adafruit_ST7735_and_ST7789_Library 
使用 2.0.0  版本的库 SPI 在文件夹： C:\\Users\\Administrator\\AppData\\Local\\Arduino15\\packages\\esp32\\hardware\\esp32\\1.0.6\\libraries\\SPI 
使用 1.11.6  版本的库 Adafruit_BusIO-master 在文件夹： C:\\Program Files (x86)\\Arduino\\libraries\\Adafruit_BusIO-master 
使用 2.0.0  版本的库 Wire 在文件夹： C:\\Users\\Administrator\\AppData\\Local\\Arduino15\\packages\\esp32\\hardware\\esp32\\1.0.6\\libraries\\Wire 
"C:\\\\Users\\\\Administrator\\\\AppData\\\\Local\\\\Arduino15\\\\packages\\\\esp32\\\\hardware\\\\esp32\\\\1.0.6/tools/riscv32-esp-elf/bin/riscv32-esp-elf-size" -A "d:\\\\arduino\\\\MyHexDir/luatos_LCD.ino.elf"
项目使用了 250174 字节，占用了 (19%) 程序存储空间。最大为 1310720 字节。
全局变量使用了11356字节，(3%)的动态内存，余留316324字节局部变量。最大为327680字节。