OSError: [Errno 22] Invalid argument

[AlexXu12256]

The script in python_utils does not work and give error says: Exception ignored in: <_io.TextIOWrapper name='' mode='w' encoding='gbk'> OSError: [Errno 22] Invalid argument

Tool Settings

• Baud Rate: [1552000]
• WiFi Channel per Device: [6]
• FreeRTOS > Tick rate (Hz): [1000]

To Reproduce Steps to reproduce the behavior:

1. Build project(s) cd (file location) (active_ap, active_sta)
2. Flash project(s) idf.py flash monitor (active_ap, active_sta)
3. External device setup (one flashed as the station, one flashed as the access point)
4. input: C:\Espressif\CODE\ESP32-CSI-Tool-master\active_sta>idf.py -p /COM4 monitor | python ./python_utils/parse_csi.py > tst.csv
5. Error: Exception ignored in: <_io.TextIOWrapper name='' mode='w' encoding='gbk'> OSError: [Errno 22] Invalid argument

Desktop (please complete the following information):

• OS: [Windows 10]
• ESP-IDF Version: [e.g. 4.3.2]
• ESP32-CSI-Tool Git Hash: [not sure]

[StevenMHernandez]

Because you are using Windows, you might want to look at #18

It looks like parse_csi.py is throwing an exception. I wonder if we add a try: catch: if we can identify what input is causing this issue.

Unfortunately I do not have a Windows machine to test this on. @AlexXu12256, do you mind adding exception handling around this line (https://github.com/StevenMHernandez/ESP32-CSI-Tool/blob/master/python_utils/parse_csi.py#L20)

try:
    csi_string = re.findall(r"\[(.*)\]", l)[0]
except Exception as e:
    print("Exception:", e)
    print("Caused By:", l)

This should print the exception and it should also print out the l variable which causes the errror.

[AlexXu12256]

Hi there, thank you so much for the response, I just have a quick question about which type of OS are you running this code on?

[StevenMHernandez]

Personally I use macOS. I believe Linux has worked well for users too (because macOS and Linux commands are similar).

[AlexXu12256]

Hi there, all my tool settings stay the same as mentioned above and I am currently trying to set up two receivers (sta) and one transmitter (ap) at the same time, but the issue I am having is that the amount of data received in each sta is almost halved compared to a single link connection (one sta, one ap). I have tried to change the packet tx rate in the sta menuconfig from 100 to 200 but the receivers are now receiving even fewer data. I have seen that you have managed to set up two sta with one ap in your papers, is there any changes I need to make in the mentioning, to maintain the same amount of data for 2 links compare to the single link?

Thank you very much