micromesh/examples/raspberry_pi_pico.py

"""MicroMesh example for Raspberry Pi Pico and Pico W.

Wiring (cross TX and RX):
  Pico GP0 / UART0 TX  -> Meshtastic radio RX
  Pico GP1 / UART0 RX  <- Meshtastic radio TX
  Pico GND             --- Meshtastic radio GND
"""

from machine import Pin, UART
from time import sleep_ms

from micromesh import PortNum, SerialInterface


def on_packet(packet):
    if packet.WhichOneof("payload_variant") != "decoded":
        return
    if packet.decoded.portnum == PortNum.TEXT_MESSAGE_APP:
        try:
            text = packet.decoded.payload.decode("utf-8")
        except UnicodeError:
            text = repr(packet.decoded.payload)
        print("from !%08x: %s" % (packet.from_, text))


def on_error(error, payload):
    print("skipping undecodable radio frame:", error, "(%d bytes)" % len(payload))


uart = UART(0, 115200, tx=Pin(0), rx=Pin(1), timeout=0, rxbuf=1024)
mesh = SerialInterface(uart, on_packet=on_packet, on_log=print, on_error=on_error)
mesh.connect()

hello_sent = False
while True:
    mesh.poll()
    if mesh.config_complete and not hello_sent:
        mesh.sendText("hello from Raspberry Pi Pico")
        hello_sent = True
    sleep_ms(10)