How to fix ESP32 error: 'gpio_num_t' does not name a type
Problem:
When compiling an ESP32 project, you may encounter the following error message:
include/Pins.hpp:10:11: error: 'gpio_num_t' does not name a type
constexpr gpio_num_t Pin_WS2812_Data = GPIO_NUM_37;
Solution
You just need to include hal/gpio_types.h
before the first use of gpio_num_t
in the file (typically, at the top of the file where the other includes are located):
#include <hal/gpio_types.h>
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