#!/usr/bin/env python3

# -*- coding: UTF-8 -*-

"""

Main script

Do your stuff here, this file is similar to the loop() function on Arduino

Example on how to perform an update of the Nextion display content

"""

# system packages

import time

# custom packages

from nextion import NexHardware, NexUpload

# define communication pins for Nextion display

tx_pin = 21

rx_pin = 22

# create Nextion hardware interface

nh = NexHardware(rx_pin=rx_pin, tx_pin=tx_pin)

# init nextion communication interface

nh.nexInit()

# create a upload instance

nex_download = NexUpload(nh, "everything.tft", 115200)

# ============================================================================

# ============================ Special functions =============================

# print file infos

print('Update file name: "{}" with size of "{}" byte'.

format(nex_download.file_name, nex_download.file_size))

# perform update

print('Performing update, please wait ...')

result = nex_download.upload()

if result:

print('Update done successfully')

else:

print('Update failed')

print()

# ============================================================================

# ============================= End of example ===============================

print('Returning to REPL in 5 seconds')

# wait for 5 more seconds to safely finish the may still running threads

time.sleep(5)