python - 使用 python 进行串行数据记录

Question

简介:

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，但是我没有成功地将这些信息存储在新文件中。

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!

Answer 1

也许你可以将这样的东西应用到你的代码中:

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

datafile.close()
ser.close()

编辑如果一切正常只是写在一个文件中试试:

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()