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Hi thoraz,
Interesting findings. Can you also share your PCB layout?

Sure. This is the top



and this is the bottom

I found that the issue is due to the PSRAM communication. It seems that the the SDx signals sometimes are very noisy, so I suppose it's not a firmware problem but an hardware one instead. I configured the OV2640 to allocate the buffer in DRAM rather than in PSRAM and now the pictures are good, even ...

I've just tryed to implement the application without the freeRTOS, but the issue persists! So it seems confined in the use of WiFi or FTP libraries. :?

EDIT:
It seems that the corruption is after the WiFi connection. To get the picture via serial I use this routine that allows me to have a hex ...

I want to send an image captured whit OV2640 to a FTP server when my system power-up. In my application I have some indipendent FreeRTOS task, so I created a task that manage the take & send of the picture. But when I receive the picture on the FTP server, it is corrupted: I can open it but seems ...

Seems platformio decodes it automatically if you use its own terminal rather than an external one (though you may need to configure it to decode the backtraces first)


Thanks for the suggestion, very usefull. Now I've changed my code to work around the issue. Next time I'll try with the decoder ...

Can you decode that backtrace?

How can I decode the backtrace? Is there a tool or somewhat? I'm using VS Code with PlatformIO and a general serial terminal to read the output.

I'm adding to a project (Arduino framework in PlatformIO) the HTTPS OTA feature. I started from https://github.com/lucadentella/esp32-tutorial/blob/master/30_https_ota/main/main.c to understand how to move my first steps. But now I have a problem with the call of esp_http_client_init in my update ...

I'm working on a system that should wakeup every 2 minutes to perform a specific task and come back to sleep. During the sleep I need to count the edges (rise and fall) of a signal so I implemented the EXT1 wakeup too. But when the system wakes up by EXT1, if I use only the esp_sleep_enable_ext1 ...

My questions are just to be sure about the behaviour of ESP32 in deep sleep mode with EXT1 and TIMER active:

1) If I set the TIMER and the EXT1 wakeups on my ESP32 and the EXT1 occurs, to keep the periodic awakening behaviour I need just to go in deep sleep without call again the esp_sleep_enable ...