无法确定我的nodemcu代码出了什么问题

Question

#include <ESP8266WiFi.h>
#include <FirebaseArduino.h>

//Firebase settings
#define FIREBASE_HOST "..........firebaseio.com/"     //cant share
#define FIREBASE_AUTH "..............."               //cant share   

//Wi-Fi settings
#define WIFI_SSID "kello"
#define WIFI_PASSWORD "8888"

//Define trigger and echo digital pins
const int trigPin = 4;
const int echoPin = 3;

// The amount of time the ultrassonic wave will be travelling for
long duration = 0;
// Define the distance variable
double distance = 0;

void setup()
{
     Serial.begin(9600);
    // Connect to Wi-Fi
    Serial.print("Wi-Fi...");
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    Serial.print("Connecting...");
    while (WiFi.status() != WL_CONNECTED)
    {
        Serial.print(".");
        delay(500);
    }
    Serial.println();
    Serial.print("Connected to: ");
    Serial.println(WiFi.localIP());

    Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

    // Ultrasonic sensor, set echo as Input and trigger as Output
    pinMode(trigPin, OUTPUT);
    pinMode(echoPin, INPUT);


}

void loop()
{

    getDistance();
    // Prints the distance value to the serial monitor
    Serial.print("Distance: ");
    Serial.println(distance);

    delay(500);
}

void getDistance()
{
    // Clear trigPin
    digitalWrite(trigPin, LOW);
    delayMicroseconds(2);

    // trigPin HIGH por 10ms
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPin, LOW);

    //Reads echoPin, returns the travel time of the sound wave in ms
    duration = pulseIn(echoPin, HIGH);

    // Calculating the distance, in centimeters, using the formula described in the first section.
    distance = duration * 0.034 / 2;

    // Sends the distance value to Firebase
    Firebase.setFloat("distance", distance);

}

我是计算机专业的毕业生，所以我对nodemcu的了解不多。我看到了一些有关nodemcu的文档。我想在Firebase的实时数据库中显示由超声波距离传感器获得的数据。但是我无法弄清楚为什么即使代码成功编译，我也无法在com5窗口中获得serial.println（distance）的输出。这是我在运行程序时得到的]

Executable segment sizes:


IROM   : 330560          - code in flash         (default or ICACHE_FLASH_ATTR) 


IRAM   : 27760   / 32768 - code in IRAM          (ICACHE_RAM_ATTR, ISRs...) 


DATA   : 1408  )         - initialized variables (global, static) in RAM/HEAP 


RODATA : 2044  ) / 81920 - constants             (global, static) in RAM/HEAP 


BSS    : 25160 )         - zeroed variables      (global, static) in RAM/HEAP 


Sketch uses 361772 bytes (34%) of program storage space. Maximum is 1044464 bytes.
Global variables use 28612 bytes (34%) of dynamic memory, leaving 53308 bytes for local variables. Maximum is 81920 bytes.
esptool.py v2.8
Serial port COM5
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: ec:fa:bc:c1:44:d2
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 365920 bytes to 264395...

Writing at 0x00000000... (5 %)
Writing at 0x00004000... (11 %)
Writing at 0x00008000... (17 %)
Writing at 0x0000c000... (23 %)
Writing at 0x00010000... (29 %)
Writing at 0x00014000... (35 %)
Writing at 0x00018000... (41 %)
Writing at 0x0001c000... (47 %)
Writing at 0x00020000... (52 %)
Writing at 0x00024000... (58 %)
Writing at 0x00028000... (64 %)
Writing at 0x0002c000... (70 %)
Writing at 0x00030000... (76 %)
Writing at 0x00034000... (82 %)
Writing at 0x00038000... (88 %)
Writing at 0x0003c000... (94 %)
Writing at 0x00040000... (100 %)
Wrote 365920 bytes (264395 compressed) at 0x00000000 in 23.4 seconds (effective 125.3 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

[请帮助我，如果需要更多信息，请告诉我。

Answer 1

您正在显示的是串行控制台输出，但是编译器的内容出现了。您在右上角的ArduinoIDE SerialMonitor中打开串行控制台窗口->文本右侧的小按钮打开了一个新窗口。如果不是，您选择了错误的命令->在“工具”->“端口”中选择正确的命令如果打开，请检查左下角的波特率，使其与程序中的波特率匹配。

Serial.begin(9600);
如果相同，请按NodeMCU上的重置按钮，然后在此处发布内容（编辑问题）

顺便说一句，您对同一计划/项目的最后一个问题：Problem flashing program to Arduino / esp8266 -> getting the following error似乎已解决，因此要公平，将答案标记为已解决，否则社区将停止提供帮助（我们在此给予帮助并接受]

Answer 2

我认为超声波传感器需要5v才能工作。我认为，nodemcu的引脚电压为3.3v。你伤害了你的博德吗？