Arduino Python3 脚本 [英] Arduino Python3 script

问题描述

我正在尝试使用 Python3 脚本来控制 Arduino Mega.这是一个简单的脚本，用于从键盘中取出一行并通过 Arduino 回显.我从 http://petrimaki.wordpress.com/2013/04/28/reading-arduino-serial-ports-in-windows-7/.我发回的字符好像看不到了，可能是格式问题.

I'm trying to use a Python3 script to control an Arduino Mega. This is a simple script to take a line from the keyboard and echo it back through the Arduino. I started with a working Python 2 script from http://petrimaki.wordpress.com/2013/04/28/reading-arduino-serial-ports-in-windows-7/. I can't seem to get the characters I sent back, which is probably a formatting issue.

这是格式问题吗?Unicode 到 ASCII 的问题?如何使用 Python 3 和 pySerial 读/写二进制/十六进制数据和 ASCII 文本?欢迎给 Python 新手任何建议.

Is this a formatting issue? unicode to ASCII issue? How do I read/write binary/hex data and ASCII text with Python 3 and pySerial? Any advice for a Python newbie is welcome.

Python 3 脚本:

Python 3 script:

import serial
import time

ser = serial.Serial('COM8', 9600, timeout=0)
var = input("Enter something: ")
print(var)
ser.write(bytes(var.encode('ascii')))
while 1:
    try:
        print(ser.readline())
        time.sleep(1)
    except ser.SerialTimeoutException:
        print(('Data could not be read'))

Arduino 代码:

Arduino code:

int incomingByte=0;

void setup() {
  // Open serial connection.
  Serial.begin(9600);
}

void loop() {
  if (Serial.available() > 0) {
    // Read the incoming byte.
    incomingByte = Serial.read();

    // Echo what you got.
    Serial.print("I got: ");
    Serial.println(incomingByte);
  }
}

输入:迅捷的赤狐

输出:

b''
b'I got: 84\r\n'
b'I got: 104\r\n'
b'I got: 101\r\n'

等等.

推荐答案

bytes(var.encode('ascii')) 好像没必要，直接用.encode()code> 方法或 bytes() 函数，两者都不需要.您还可以对接收到的数据使用 .decode().

bytes(var.encode('ascii')) seems unnecessary, just use the .encode() method or the bytes() function, no need for both. You can also use .decode() on the data that you receive.

异常 serial.SerialTimeoutException 是 写入超时时引发的，与阅读无关.

The exception serial.SerialTimeoutException is raised on write timeouts, nothing to do with reading.

在Arduino代码中，尝试使用Serial.write()发送数据回来了.

In the Arduino code, try using Serial.write() to send the data back.

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