No root conflicts resolution, so more than one root may exist in network. Other nodes will connect to the one with the best path automatically.

esp_err_t esp_mesh_recv(mesh_addr_t *from, mesh_data_t *data, int timeout_ms, int *flag, mesh_opt_t opt[], int opt_count) The type of flag parameter is int *, So a integer pointer should be pass to it. After esp_mesh_recv() finished, the variable that the pointer linked to will be set MESH_DATA_TOD...