Function esp_idf_svc::sys::esp_psram_init

pub unsafe extern "C" fn esp_psram_init() -> i32

@brief Initialize PSRAM interface/hardware.

@return - ESP_OK: On success - ESP_FAIL: PSRAM isn’t initialized successfully, potential reason would be: wrong VDDSDIO, invalid chip ID, etc. - ESP_ERR_INVALID_STATE: PSRAM is initialized already