TDI (GPIO12) functions as a strapping pin and needs to be pulled down when the ESP32 is reset to select a 3.3V LDO output for the flash memory. This circuit on S_TDI, when jumpered to TDI, will pull TDI/IO12 on the ESP32 low during a power-on reset. An important distinction is that this circuit will...

I have configured GPIO39 (SENSOR_VN) to function as a digital input by calling gpio_config() from the IDF. When I pull GPIO39 of the ESP-WROOM-32 module low with a 3.3V LVTTL gate it seems to oscillate. Attaching a scope shows a (pure) sine wave of 3Vp-p, 15ns period. Touching the scope lead changes...

Just a few more GPIOs would really make a difference, even 6 to 8 more if the package size can't be increased by much. Have a way to start synchronized RMT transfers on multiple channels at once. Fixing the hardware bug (or is it intentional?) where cs_ena_pretrans doesn't work for non-half-duplex S...