#!/usr/bin/env pybricks-micropython

# Before running this program, make sure the client and server EV3 bricks are
# paired using Bluetooth, but do NOT connect them. The program will take care
# of establishing the connection.

# The server must be started before the client!

from pybricks.messaging import BluetoothMailboxClient, TextMailbox

# This is the name of the remote EV3 or PC we are connecting to.
SERVER = 'ev3dev'

client = BluetoothMailboxClient()
mbox = TextMailbox('greeting', client)

print('establishing connection...')
client.connect(SERVER)
print('connected!')

# In this program, the client sends the first message and then waits for the
# server to reply.
mbox.send('hello!')
mbox.wait()
print(mbox.read())