Question

我想使用Arduino将消息发送到手机。

我正在使用Twilio的API，Python和Arduino IDE。因此，我使用两个按钮，如果我按下button1，则消息为“ TURN ON LAMP”，如果我按下button2，则消息为“ TURN OFF LAMP”。

但是python中有问题：

TypeError: '>' not supported between instances of 'str' and 'int'

我在下面的代码中隐藏了我的帐户SID，令牌和编号。

Arduino代码


const int buttonPin1 = 6;     // the number of the pushbutton pin

const int buttonPin2 = 7;

int buttonstate1 = 0;

int buttonstate2 = 0;

void setup() {

 Serial.begin(9600);

 pinMode(buttonPin1, INPUT);

 pinMode(buttonPin2, INPUT);

 pinMode(LED_BUILTIN, OUTPUT);

}

void loop() {

  buttonstate1 = digitalRead(buttonPin1);

  buttonstate2 = digitalRead(buttonPin2);

  if (buttonstate1 == HIGH) {

    Serial.println("a");

    digitalWrite(LED_BUILTIN, HIGH);

    delay(1000);
 } else {
    // turn LED off:

digitalWrite(LED_BUILTIN, LOW);

}
  if (buttonstate2 == HIGH) {

    Serial.println("b");

    digitalWrite(LED_BUILTIN, HIGH);

    delay(1000);
  }
else {

    digitalWrite(LED_BUILTIN, LOW);

  }

Python代码


import time

import serial

from twilio.rest import Client

arduinoserial = serial.Serial('COM3', 9600)

time.sleep(2)

account_sid = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

auth_token  = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

client = Client(account_sid, auth_token)

while True:

        if arduinoserial.read('a'):

            print(arduinoserial.readline().str())

            messageTosend="TURN ON LAMP"

            message = client.messages.create(

                                body=messageTosend,

                                from_='+14xxxxxxx',

                                to='+14xxxxxxxx'
                        )
        if arduinoserial.read(int('b')):

            print(arduinoserial.readline().str())

            messageTosend = "TURN OFF LAMP"

            message = client.messages.create(

                body=messageTosend,

                from_='+14xxxxxxxxxxxx',

                to='+14xxxxxxxxxxxxxxx'
            )

time.sleep(1)

print(message.sid)

arduinoserial.close()

Answer 1

您的两个if语句是问题。

以下是serial.read（）的工作原理：

arduinoserial.read() #reads one byte from buffer
arduinoserial.read(10) #reads ten bytes from buffer

arduinoserial.read('a') #makes no sense

因此，这是您需要调整代码的方式：（如果只想执行一次，就可以摆脱while循环）

while true:
    arduino_input = arduinoserial.readline() #reads a full line of text (also waits till the arduino sent a line of text)

    if arduino_input == 'a': #compares text to 'a'
        [do your stuff here]

    if arduino_input == 'b': #compares text to 'b'
        [do your stuff here]

此行代码从缓冲区读取一行，将其转换为字符串，然后将其与另一个字符（“ a”或“ b”）进行比较。如果字符串和字符等价，则执行if语句的正文。

希望这会有所帮助。：]

Python Arduino：“ str”和“ int”的实例之间不受支持

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