我是 Python 语言和编码的新手。
我正在尝试使用 USB 串行获取和区分来自 Arduino UNO 板的实时信号。到目前为止,我正在毫无问题地获取数据,但我无法获得有关如何区分它的信息。
你们能帮我解决这个问题,或者指出我在哪里可以获得有关这些东西的一些信息。
我将衷心感谢您的帮助。
这是我的代码
观察者:我是初学者:D
# -*- coding: utf-8 -*-
from collections import deque
import serial
import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np
arduinoData = serial.Serial('COM4', 4800)
win = pg.GraphicsWindow()
win.setWindowTitle('pyqtgraph example: Scrolling Plots')
# In these examples, the array size is fixed.
p1 = win.addPlot()
p2 = win.addPlot()
data1= [0,0]
vector=deque()
for i in range(300):
string = arduinoData.readline()
stringx = string.split(',')
time=float(stringx[0])
distance=float(stringx[1])
vector=(time, distance)
vectorx = np.array(vector)
data1=np.vstack((data1,vectorx))
curve1 = p1.plot(data1)
curve2 = p2.plot(data1)
ptr1 = 0
def update1():
global data1, curve1, ptr1
data1[:-1] = data1[1:]
string = arduinoData.readline()
stringx = string.split(',')
time=float(stringx[0])
distance=float(stringx[1])
vector=(time, distance)
vectorx=np.array(vector)
data1[-1]=vectorx
#print(data1)
curve1.setData(data1)
ptr1 += 1
curve2.setData(data1)
curve2.setPos(ptr1, 0)
# update all plots
def update():
update1()
timer = pg.QtCore.QTimer()
timer.timeout.connect(update)
timer.start(50)
## Start Qt event loop unless running in interactive mode or using pyside.
if __name__ == '__main__':
import sys
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
QtGui.QApplication.instance().exec_()