问题描述
限时送ChatGPT账号..所以我正在从串行连接读取(并用 tkinter 文本框显示)数据,但我无法按照我的意愿处理返回的数据,以便运行我的测试.更简单地说,即使显示了 machine response = 0x1
,我也无法从全局 serBuffer
中读取它.
So i am reading (and displaying with a tkinter textbox) data from a serial connection, but i can't process the returning data as i would like to, in order to run my tests. In more simple terms, even though the machine response = 0x1
is displayed, i can't read it from the global serBuffer
.
在将它显示到 textbox
之前,我会从测试 function
内部读取,然后检查响应是否在 string
中,但是现在我将读取的数据(字符串)传递给一个全局变量,然后尝试读取它,它似乎不起作用,除非我从 readserial<中删除
serBuffer = ""
/代码>.但这会导致一个新问题.当我按下按钮发送命令时,它会发送它,但仅在我第二次按下它之后才会收到响应,之后每次都收到响应.因此,如果我运行一次测试,我会得到 Fail
,但每次都通过.
Before displaying it to the textbox
i would read from inside the test function
and then check if the response was in the string
, but now that i pass the read data(strings) to a global variable and then try to read it, it doesn't seem to work, UNLESS i remove the serBuffer = ""
from readserial
. That results in a new issue though. When i press the button to send the command it sends it, but only receives the response after the second time i press it, and every time after. So as a result i get a Fail
if i run the test once, but i get a pass everytime after.
带有所需响应的图片(测试函数
不读取0x1并始终返回FAIL)
Picture with the desired response ( that the test function
doesn't read 0x1 and always returns FAIL)
带有非期望响应的图片(只有在第二次按下它之后才会收到响应,之后每次都收到响应.因此,如果我运行一次测试,我会得到一个失败,但我每次都通过).
Picture with the non-desired response ( that only receives the response after the second time a press it, and every time after. So as a result i get a Fail if i run the test once, but i get a pass every time after).
import tkinter as tk
import serial
from serial import *
serialPort = "COM3"
baudRate = 115200
ser = Serial(serialPort, baudRate, timeout=0, writeTimeout=0) #ensure non-blocking
#make a TkInter Window
mainWindow = tk.Tk()
mainWindow.wm_title("Reading Serial")
mainWindow.geometry('1650x1000+500+100')
scrollbar = tk.Scrollbar(mainWindow)
scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
log = tk.Text ( mainWindow, width=60, height=60, takefocus=0)
log.pack()
log.config(yscrollcommand=scrollbar.set)
scrollbar.config(command=log.yview)
#make our own buffer
#useful for parsing commands
#Serial.readline seems unreliable at times too
serBuffer = ""
ser.write(b'\r\n')
def readSerial():
while True:
c = (ser.read().decode('utf-8', 'ignore')) # attempt to read a character from Serial
# was anything read?
if len(c) == 0:
break
# get the buffer from outside of this function
global serBuffer
# check if character is a delimeter
if c == '\r':
serBuffer += "\n" # don't want returns. chuck it
if c == '\n':
serBuffer += "\n" # add the newline to the buffer
# add the line to the TOP of the log
log.insert('1.1', serBuffer)
serBuffer = "" # empty the buffer
else:
serBuffer += c # add to the buffer
mainWindow.after(100, readSerial) # check serial again soon
def test():
command = b" test command \r\n"
ser.write(command)
global serBuffer
time.sleep(0.5)
if "0x1" in serBuffer:
print('PASS')
return 'PASS'
else:
print('FAIL')
return 'FAIL'
button = tk.Button(mainWindow, text="Pone Test", font=40, bg='#b1c62d', command=test)
button.place(relx=0.8, rely=0, relwidth=0.1, relheight=0.05)
# after initializing serial, an arduino may need a bit of time to reset
mainWindow.after(100, readSerial)
mainWindow.mainloop()
推荐答案
我做了一些更改,请检查这个.
I made some changes, check this one.
def readSerial():
while True:
c = (ser.read(1).decode('utf-8', 'ignore')) from Serial
if len(c) == 0:
break
global serBuffer
if c == '\r':
serBuffer += ""
if c == '\n':
serBuffer += "\n"
log.insert(tk.END, serBuffer)
log.see(tk.END)
log.update_idletasks()
serBuffer = ""
else:
serBuffer += c
mainWindow.after(500, readSerial)
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