43 lines
935 B
Python
43 lines
935 B
Python
"""Device-side ESP-NOW sender (MicroPython, channel 5)."""
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import espnow
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import network
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import ubinascii
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CHANNEL = 5
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DEST_HEX = "ffffffffffff"
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PAYLOAD_HEX = "4c0501000000"
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def _set_channel(channel):
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sta = network.WLAN(network.STA_IF)
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sta.active(True)
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sta.config(pm=network.WLAN.PM_NONE)
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sta.config(channel=channel)
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def _add_peer(esp, dest, channel):
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try:
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esp.add_peer(dest, channel=channel)
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except TypeError:
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esp.add_peer(dest)
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except OSError:
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pass
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def send_once(dest_hex=DEST_HEX, payload_hex=PAYLOAD_HEX, channel=CHANNEL):
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dest = ubinascii.unhexlify(dest_hex)
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pkt = ubinascii.unhexlify(payload_hex)
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_set_channel(channel)
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e = espnow.ESPNow()
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e.active(True)
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_add_peer(e, dest, channel)
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ok = e.send(dest, pkt, True)
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print("sent", ok, "ch", channel, "dest", dest_hex, "len", len(pkt))
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return ok
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if __name__ == "__main__":
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send_once()
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