如何将Pyserial读取数据导出到文本文件或Matlab中

Question

我是Pyserial的新手，我目前正在使用它从微控制器读取一堆数据，数据格式如（1,2,3,4，....），我想保存这些数据要么是文本文件还是Matlab，我应该如何实现呢？谢谢！

Answer 1

在这里，这里是一个链接到我一直在创建的存储库，总结了不同的方法：

https://github.com/gskielian/Arduino-DataLogging/blob/master/PySerial/README.md

以下说明

---

PySerial

Pyserial是从Arduino中获取数据的绝佳方式，它既健壮又易于实现。

以下示例显示了一种非常简单的方法，可以帮助您入门。

但是，请注意arduino不会经常向您的程序发送数据 - 您可能会遇到来自缓冲区溢出的错误。

Naive Pyserial和Sketch

#try首先想要了解pyserial

<强> naive.py

import serial

ser = serial.Serial('/dev/ttyACM0',115200)

f = open('dataFile.txt','a')

while 1 :
    f.write(ser.readline())
    f.close()
    f = open('dataFile.txt','a')

<强> naive.ino

void setup() {
  Serial.begin(115200);
}

void loop() {
  Serial.println(analogRead(A0));
  delay(1000);
}

健壮的Pyserial和草图

当你准备好了，考虑让arduino只在你的python程序提示时发送数据：

<强> 8robust.py

#!/usr/bin/python
import serial, time
ser = serial.Serial('/dev/ttyACM0',  115200, timeout = 0.1)

#if you only want to send data to arduino (i.e. a signal to move a servo)
def send( theinput ):
  ser.write( theinput )
  while True:
    try:
      time.sleep(0.01)
      break
    except:
      pass
  time.sleep(0.1)

#if you would like to tell the arduino that you would like to receive data from the arduino
def send_and_receive( theinput ):
  ser.write( theinput )
  while True:
    try:
      time.sleep(0.01)
      state = ser.readline()
      print state
      return state
    except:
      pass
  time.sleep(0.1)

f = open('dataFile.txt','a')

while 1 :
    arduino_sensor = send_and_receive('1')
    f.write(arduino_sensor)
    f.close()
    f = open('dataFile.txt','a')

<强> robust.ino

void setup () {   pinMode(13, OUTPUT);   Serial.begin(115200); } 
    void loop() {

  if (Serial.available())    {

     ch = Serial.read();

     if ( ch == '1' ) { 
       Serial.println(analogRead(A0)); // if '1' is received, then send back analog read A0
     } 
     else if (ch == '2') {    
       digitalWrite(13,HIGH); // if '2' is received, turn on the led attached to 13
     } 
     else if (ch == '3') {
       digitalWrite(13,LOW); // if '3' is received then turn off the led attached 13
     } else {
       delay(10);
     }
   }    
}