fixes

examples/raspberry_pi_pico.py

@@ -0,0 +1,34 @@
+"""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:
+        print("from !%08x: %s" % (
+            packet.from_, packet.decoded.payload.decode("utf-8", "replace")
+        ))
+
+
+uart = UART(0, 115200, tx=Pin(0), rx=Pin(1), timeout=0, rxbuf=1024)
+mesh = SerialInterface(uart, on_packet=on_packet, on_log=print)
+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)