76 lines
2.0 KiB
Python
76 lines
2.0 KiB
Python
"""MicroMesh example for the Seeed Studio XIAO RP2040.
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Wiring (cross TX and RX):
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XIAO D6 / GPIO0 / TX -> Meshtastic radio RX
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XIAO D7 / GPIO1 / RX <- Meshtastic radio TX
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XIAO GND --- Meshtastic radio GND
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"""
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from machine import Pin, UART
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from time import sleep_ms, ticks_diff, ticks_ms
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from micromesh import PortNum, SerialInterface
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def on_packet(packet):
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if packet.WhichOneof("payload_variant") != "decoded":
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return
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if packet.decoded.portnum == PortNum.TEXT_MESSAGE_APP:
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try:
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text = packet.decoded.payload.decode("utf-8")
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except UnicodeError:
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text = repr(packet.decoded.payload)
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print("from !%08x: %s" % (packet.from_, text))
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def on_receive(message):
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variant = message.WhichOneof("payload_variant")
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print("radio message:", variant or "unknown")
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def on_error(error, payload):
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print("skipping undecodable radio frame:", error)
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print("frame bytes:", payload.hex())
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print("MicroMesh starting on XIAO RP2040")
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print("UART0: D6/GPIO0 TX -> radio RX")
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print("UART0: D7/GPIO1 RX <- radio TX")
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print("UART0: 115200 baud; common GND required")
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uart = UART(
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0,
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baudrate=115200,
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tx=Pin(0), # XIAO D6
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rx=Pin(1), # XIAO D7
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timeout=0,
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rxbuf=1024,
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)
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mesh = SerialInterface(
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uart,
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on_receive=on_receive,
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on_packet=on_packet,
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on_log=lambda line: print("radio log:", line),
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on_error=on_error,
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)
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mesh.connect()
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print("configuration requested; id=%08x" % mesh.config_id)
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hello_sent = False
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last_status = ticks_ms()
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while True:
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mesh.poll()
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if mesh.config_complete and not hello_sent:
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print("radio configuration complete; sending greeting")
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mesh.sendText("hello from XIAO RP2040")
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hello_sent = True
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now = ticks_ms()
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if ticks_diff(now, last_status) >= 5000:
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if mesh.config_complete:
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print("connected; %d nodes known" % len(mesh.nodes))
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else:
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print("waiting for radio data; check TX/RX, GND, baud, and PROTO mode")
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last_status = now
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sleep_ms(10)
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