- ESP_OK : succeed - ESP_ERR_ESPNOW_NOT_INIT : ESPNOW is not initialized - ESP_ERR_ESPNOW_ARG : invalid argument - ESP_ERR_ESPNOW_FULL : peer list is full
Fetch a peer from peer list. Only return the peer which address is unicast, for the multicast/broadcast address, the function will ignore and try to find the next in the peer list.