ble stack is used only when booting in ble upgrade mode

I am trying to test this but the python code doesn't write the characteristics of the esp. And the execution is stuck at this -
Searching for ESP32...
ESP32 found!
Sending packet size: 253.
Sending OTA request.

Hello, I'm trying to run esp32_ble_ota/ble_client/main.py , but getting this error:

File "main.py", line 82
while chunk := file.read(packet_size):
^
SyntaxError: invalid syntax

Python 3.7.3 is installed on my PC.
Please, advice?

Hi Michael,
Thanks for the project, it works pretty well on my side. One thing I am unable to change is the advertised device name, it seems to always defaults to "esp32".
So far I understand to only place to change in your code would be:
static const char device_name[] = "esp32";

Anything I am missing?
Thanks

Hi Michael,

Great tutorial and example code! It works great and I am able to transfer not only your example, but I am able to transfer my test app. After it completes the transfer, the app reboots as intended and runs my app successfully.

However, after I perform a hard reboot, it reverts back to the factory image. I also transferred the stock hello_world.bin app and that runs as well the first time but then reverts to the factory partition without the hard reset when it calls esp_restart()

When I transfer the esp32_ble_ota.bin app it runs as well. But when I hard reset it, I can no longer talk on the jtag/openocd interface. I was able to transfer a new bin file. Maybe its running out of the ota partition but I cannot be certain. (BTW, I plan to toggle an IO and scope it out to determine what image is actually running I an experiment...)

I starting looking at the reference code and the gatt_svr.c code to see if I can figure out why. I just started, but I thought I would just post an issue to see if you might have run into this or maybe someone else?

Thank you for any info you might have.

Dan

BTW, I am running on an esp32-C3DevKitM-1

Note: I moved to the usb interface and I can confirm that when loading the esp32_ble_ota.bin file the esp32 will use that partition. I assume I must add something to my app to not have it revert to the factory image....