86a1d579ff
On most microcontrollers I have worked with one can retrieve the current state of output GPIO pins. On ESP32 this is not the case if the pad is not explictly configured to route this information into the port by configuring it as input or i/o. Thus add a warning to the API documentation of gpio_get_level(). Merges https://github.com/espressif/esp-idf/pull/1740