Function esp_now_register_recv_cb

pub unsafe extern "C" fn esp_now_register_recv_cb(
    cb: Option<unsafe extern "C" fn(*const esp_now_recv_info, *const u8, i32)>,
) -> i32

Expand description

@brief Register callback function of receiving ESPNOW data

@param cb callback function of receiving ESPNOW data

@return - ESP_OK : succeed - ESP_ERR_ESPNOW_NOT_INIT : ESPNOW is not initialized - ESP_ERR_ESPNOW_INTERNAL : internal error

esp_now_register_recv_cb