Hi x-8973, I adapted the code from your post into a working main.c. This runs without any immediate problems on the current IDF master branch: https://gist.github.com/projectgus/f4f4ec494db2c67f1e1261c0b9309d91 I also turned on Comprehensive heap checking but no problems were detected. If you have s...

The signal integrity looks ok. Do you have some oscilloscope traces that you can share? I'd appreciate it if you could point me to some documentation relating to the use of the Tick clock as a source for the uart driver. Sorry, I should have been more specific. The tick clock is slower, so it won't...

Hi LukeSkyWire, The UART baud rate is an integer divider from the APB clock frequency (80MHz)[*] times 16, so 941176 is the closest evenly divisible rate. You could also try 1 megabaud (1000000, a very easy value to divide to) and see how this works. How is your analog signal integrity? 1MHz is gett...

If you specifically want a wireless point to point link, you may want to look into ESP-NOW: https://esp-idf.readthedocs.io/en/latest/api-reference/wifi/esp_now.html But as John A says, it's possible for two ESP32s to talk to each other via a large number of methods. (PS: I've renamed your thread fro...

The power is coming from a bench top power supply... Now, I am testing another ESP32 module and the behaviour is the same... it doesnt start What else do you have at the module end? ie is there sufficient capacitance on the power pins near the module? Is the 3.3V coming directly from the bench supp...

So, hopefully there will be a period of time where we can still use the latest ESP-IDF updates without forcing us to move to cmake. And, hopefully you will have all of the bugs worked out of the cmake system before dropping support for the pure GNU make system. That way we never have a period where...

I use this with Clion and it works great, but I would like also to be able to use Arduino as a component, but there is no Branche for this of any guide I can find. So my questions is if this is possible and if yes, how to install it ? I've just written a component CMakeLists.txt file for arduino-es...

Hi Chris,

What's the power source for the 3.3V line? Is it possible that it ramps up very slowly, or is unstable?

Nice trick!

What ESP-IDF version are you each using? (if using Arduino or something else with its own i2c libraries, please mention this.) In recent ESP-IDF master branch, a change was added to always reset peripherals on startup: https://github.com/espressif/esp-idf/commit/ef39c09bc12206cb68816c7660c7641dd21df...