from espnow import ESPNow
import network

sta = network.WLAN(network.STA_IF)
sta.active(True)

espnow = ESPNow()
espnow.active(True)

# add_peer() expects a 6-byte MAC (bytes/bytearray), not integers.
# Unicast placeholders (not broadcast/multicast) so get_peers() lists them.
# PEERS = aa:aa:aa:aa:aa:START … aa:aa:aa:aa:aa:END (inclusive last octet).
_PREFIX = b"\xaa\xaa\xaa\xaa\xaa"
_START_LAST_OCTET = 1
_END_LAST_OCTET = 40
PEERS = tuple(_PREFIX + bytes((i,)) for i in range(_START_LAST_OCTET, _END_LAST_OCTET + 1))
for peer in PEERS:
    espnow.add_peer(peer)

print("peers:", PEERS)

for peer in PEERS:
    espnow.send(peer, b"Hello, world!")

print(espnow.get_peers())