用python实现串行数据记录

简介：

from __future__ import print_function
import serial, time, io, datetime
from serial import Serial

addr = "COM1" ## serial port to read data from
baud = 9600 ## baud rate for instrument

ser = serial.Serial(
    port = addr,\
    baudrate = baud,\
    parity=serial.PARITY_NONE,\
    stopbits=serial.STOPBITS_ONE,\
    bytesize=serial.EIGHTBITS,\
    timeout=0)


print("Connected to: " + ser.portstr)

## this will store each line of data
seq = []
count = 1 ## row index

while True:
    for i in ser.read():
        seq.append(i) ## convert from ACSII?
        joined_seq = ''.join(str(v) for v in seq) ## Make a string from array

        if i == '\n':
            print("Line: " + str(count) + "" + str(datetime.datetime.now()) + joined_seq) ## append a timestamp to each row of data
            seq = []
            count += 1
            break

ser.close()

我需要编写一个小程序，实时读取串行数据并将其写入文本文件。我在读取数据方面取得了一些进展，但我没有成功地将这些信息存储到新文件中

这是我的代码：

from __future__ import print_function
import serial, time, io, datetime
from serial import Serial

addr = "COM1" ## serial port to read data from
baud = 9600 ## baud rate for instrument

ser = serial.Serial(
    port = addr,\
    baudrate = baud,\
    parity=serial.PARITY_NONE,\
    stopbits=serial.STOPBITS_ONE,\
    bytesize=serial.EIGHTBITS,\
    timeout=0)


print("Connected to: " + ser.portstr)

## this will store each line of data
seq = []
count = 1 ## row index

while True:
    for i in ser.read():
        seq.append(i) ## convert from ACSII?
        joined_seq = ''.join(str(v) for v in seq) ## Make a string from array

        if i == '\n':
            print("Line: " + str(count) + "" + str(datetime.datetime.now()) + joined_seq) ## append a timestamp to each row of data
            seq = []
            count += 1
            break

ser.close()

---

谢谢

也许您可以将以下内容改编为代码：

filename="myFile.txt"
datafile=open(filename, 'a')
while True:
    data = ser.readline()
    datafile.write(data)

datafile.close()
ser.close()

编辑 如果只是在文件中写入，一切正常，请尝试：

from __future__ import print_function
import serial, time, io, datetime
from serial import Serial

addr = "COM1" ## serial port to read data from
baud = 9600 ## baud rate for instrument

ser = serial.Serial(
    port = addr,\
    baudrate = baud,\
    parity=serial.PARITY_NONE,\
    stopbits=serial.STOPBITS_ONE,\
    bytesize=serial.EIGHTBITS,\
    timeout=0)


print("Connected to: " + ser.portstr)

filename="myFile.txt"
datafile=open(filename, 'a')

## this will store each line of data
seq = []
count = 1 ## row index

while True:
    for i in ser.read():
        seq.append(i) ## convert from ACSII?
        joined_seq = ''.join(str(v) for v in seq) ## Make a string from array

        if i == '\n':
            datafile.write("Line: " + str(count) + "" + str(datetime.datetime.now()) + joined_seq) ## append a timestamp to each row of data
            seq = []
            count += 1
            break
datafile.close()
ser.close()

---

这是一个很好的起点，但是您的示例删除了我添加的时间戳。这带来了一个我还没有克服的新障碍。我正在研究使用numpy和np.append函数向原始串行数据添加时间戳列。我现在意识到使用数组格式可能是我的最佳选择。好的，否则，在创建时间戳之后，您只能

datafile.write（“stampedDataHere”）

。好的，谢谢，我将研究创建stampedData对象。我刚刚意识到我的示例代码只打印时间戳，但它还没有将它附加到每一行数据中。目前正试图找出如何使其正常工作。

stampedata

只是一个名称，我的意思是把它放在实际存在的地方，

print…

类似于：

datafile.write（“行：”+str（count）+“+str（datetime.datetime.now（））+joined\seq）

我编辑了我的帖子。。。我无法在我的计算机中尝试此代码。。。。但主要思想在这里。。。。