Question

这是一个针对学校俱乐部的项目。我有一个非常基本的Arduino程序，根据收到的输入，该程序以两种不同的速率使LED闪烁。我对python真的很陌生，所以我真的不知道自己在做什么。到目前为止，我为此编写了一小段代码，仅在python中工作。我只接受用户输入并将其写入Arduino。效果很好。

但是我的意思是要有一个基于烧瓶的GUI来控制Arduino。我设置了两个按钮来执行此操作。当我修改代码以与flask应用程序一起运行时，Arduino LED只会闪烁一次，并且不会运行该程序。我不知道怎么了。这是我的代码：

Arduino：

 int led =13, data;
   void setup() {
    // put your setup code here, to run once:
   Serial.begin(9600); // Set the baud rate
  pinMode(13, OUTPUT); // Set the onboard LED to output
  digitalWrite(13, LOW);
  Serial.println("Ready");
}
void loop()
{
while (Serial.available())
{
  data = Serial.read();
}
if (data =='1')
{
    digitalWrite(led, HIGH); //turn LED on    
    delay(500); //wait for a second
    digitalWrite(led, LOW);//turn LED off
    delay(500); //wait for a second
}
if (data =='0')
{
    digitalWrite(led, HIGH);//turn LED on
    delay(2000); //wait for a second
    digitalWrite(led, LOW);//turn LED off
    delay(2000); //wait for a second
}
}

HTML表单提交按钮：

<form action ="/gui" method= "POST">
    <input type="submit" name="submit" value="Blink Fast">
    <input type="submit" name="submit" value="Blink Slow">
</form>

Python Flask

import serial
from flask import render_template, request
from flask import Flask

app = Flask(__name__)


@app.route('/')
@app.route('/gui', methods=(['GET', 'POST']))
def hello_world():
    if request.method =='POST':
        request.form['submit']
        arduino_serial = serial.Serial('COM3', 9600)  # Create Serial port object called arduinoSerialData
        if request.form['submit']== 'Blink Fast':  # if the entered data is blink fast
            print(b'1')
            arduino_serial.write(b'1')  # send 1 to arduino
        elif request.form['submit']=='Blink Slow':
            arduino_serial.write(b'0')  # send 0 to arduino
            print(b'1')

    return render_template('gui.html')


if __name__ == '__main__':
    app.run()

最后这是有效的代码：

import serial

Arduino_Serial = serial.Serial('COM3', 9600)  # Create Serial port object called arduinoSerialData
print
Arduino_Serial.readline()  # read the serial data and print it as line
print("Enter 1 to ON LED and 0 to OFF LED")

while 1:  # infinite loop
    input_data = input()  # waits until user enters data
    print
    "you entered", input_data  # prints the data for confirmation

    if (input_data == '1'):  # if the entered data is 1
        Arduino_Serial.write(b'1')  # send 1 to arduino
        print("LED ON")

    if (input_data == '0'):  # if the entered data is 0
        Arduino_Serial.write(b'0')  # send 0 to arduino


print("LED OFF")

在使Arduino与Flask框架一起工作时遇到问题，我在做什么错？

0 个答案: