"""MicroMesh example for a generic ESP32 development board.

Wiring (cross TX and RX):
  ESP32 GPIO17 / UART2 TX  -> Meshtastic radio RX
  ESP32 GPIO16 / UART2 RX  <- Meshtastic radio TX
  ESP32 GND                --- Meshtastic radio GND

Change the pin numbers when GPIO16 or GPIO17 is unavailable on your board.
"""

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(2, baudrate=115200, tx=Pin(17), rx=Pin(16), 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 ESP32")
        hello_sent = True
    sleep_ms(10)