Solved. Mis-match between the led strip code version of IDF and the latest IDF.

Thanks to:
https://twitter.com/onelittlebat/status ... 1622625281

Here are more notes:
https://github.com/espressif/esp-idf/issues/187

and

https://github.com/Lucas-Bruder/ESP32_L ... /issues/19

Hello, Just started working with ESP32. I'm working with the latest IDF master branch from github, as of today. Trying to use this code: https://github.com/Lucas-Bruder/ESP32_LED_STRIP which uses the RMT driver. The code successfully starts the RMT peripheral and I see (using o-scope) the very first...