Serial connection connection issue

[snippsat]

All look ok.
So next step.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

C:\>pip install pyserial Collecting pyserial   Using cached pyserial-3.5-py2.py3-none-any.whl (90 kB) Installing collected packages: pyserial Successfully installed pyserial-3.5   C:\>python Python 3.9.5 (tags/v3.9.5:0a7dcbd, May  3 2021, 17:27:52) [MSC v.1928 64 bit (AM D64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import serial >>> >>> serial.__version__ '3.5' >>> exit()   C:\>

If this fails look if you have name a file serial.py rename or delete it.

[Joni_Engr]

Hi, yes it has two versions.

How to delete the previous version.

1 2 3 4

O:\>py -0 Installed Pythons found by py Launcher for Windows  -3.9-64 *  -3.8-64

[snippsat]

Dos it work now?
You can uninstall the normal way,it use the right version -3.9-64 * so that other version is there dos nothing.

If i do it.

1 2 3 4 5 6 7 8 9

C:\>py -0 Installed Pythons found by py Launcher for Windows  -3.9-64 *  -3.8-64  -3.7-32  -3.6-32  -3.5-32  -3.4-32  -2.7-32

[Joni_Engr]

I just have installed a fresh python on another computer. Now at least I am able to run this code but the problem is that I am not able to receive the line from Microcontroller. I know which line Microcontroller should send when I send the character S but it is not coming.

1 2 3 4 5 6 7 8 9 10

import serial ser = serial.Serial("COM7", 9600)     # Send character 'S' to start the program ser.write(bytearray('S','ascii'))     # Read line   while True:  bs = ser.readline()  print(bs)

[snippsat]

Now is more like trying different setting like port values.
Do print(ser) you should setting like in image under.
Cross Platform serial communication using Python (PySerial)

Search for your type of Microcontroller and Python.

[deanhystad]

Do you know for sure that the response includes a newline character (\n)? readline() will wait until it receives one.

The pyserial documentation also warns against using readline() without a timeout. You should configure your connection to have a read timeout and catch the exception that occurs.

https://pyserial.readthedocs.io/en/lates...intro.html

If your device does not terminate lines with a newline I recommend using read_until() instead of readline(). If your device response does not use a termination character use read(number_of_bytes). You should still set a timeout and catch the exception.