Try these steps:

1. try plugging the USB directly into your computer (don't use a USB hub).
2. try a different USB port (that is directly connected to the computer)
3. Double check the Zadig setting
4. put the ESP in bootload mode (hold BOOT pin, and hit the EN pin), then start openOCD

I have been living with same problem. I am running in eclipse on windows.
Hoping the dev team is working on improving debugging.

Thanks WiFive. It looks like "esp-idf/components/openssl/platform/" wraps mbedtls to make it look like openssl.
Seems its easier to use the openssl API, but it gives less control and is less efficient than directly using mbedtls.

Some basic SSL Questions, which I am having trouble with... 1. What is the difference between OpenSSL vs mbedTLS, as used in the ESP-IDF sdk? It looks like mbedTLS has additional crypto libraries as well. 2. Why do both libraries need to be included in the SDK? Sometimes I see examples using OpenSSL...

A good article on how modem-sleep, light-sleep and DTIM will work (but its for esp8266). Looks like the esp8266 can get <1mA at DTIM 3 when idle. https://www.espressif.com/sites/default/files/9b-esp8266-low_power_solutions_en_0.pdf Hopefully, we get light-sleep (aka tickless sleep) soon for ESP32 as...

Thanks. I guess I will test it myself to see how the esp/lwip stack will react.

What would happen if two ESP32 use the same static IP (via WiFi)? Will the second one not be able to connect?

Option 1: Do 3 different queues. This will use more memory, but will ensure parallel push of data.
Options 2: Use 3 different binary semaphore "takes", and have each task retrieve the payload upon a successful "take".

Once you use FreeRTOS (or other RTOS) you will never go back to bare metal. There is a few hours of learning curve, but you will understand it very quickly.

Thanks ESP_igrr, I was able to allocate 280kB of ram, via malloc. Looks like however, non-contiguous memory is not supported at this time, since I could not malloc all 280kB at once. Had to do it in this exact order of 3 chunks: 160kB 110kB 10kB Next steps is to study the heap_caps API: http://esp-i...