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#!/usr/bin/env python
# coding=utf-8
# This file is part of the PiXtend(R) Project.
#
# For more information about PiXtend(R) and this program,
# see <https://www.pixtend.de> or <https://www.pixtend.com>
#
# Copyright (C) 2018 Robin Turner
# Qube Solutions UG (haftungsbeschränkt), Arbachtalstr. 6
# 72800 Eningen, Germany
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import print_function
# Import Pixtend V2 class
from pixtendv2s import PiXtendV2S
import time
import sys
strSlogan1 = "PiXtend Python Library v2 (PPLv2) demo."
strSlogan2 = "PiXtend Python Library v2 (PPLv2) demo finished."
# -----------------------------------------------------------------
# Print Art and Slogan
# -----------------------------------------------------------------
print("")
print(" ____ _ _ ____ __ _ _____ _____")
print(" / __ \\(_) |/ / /____ ____ ____/ / | | / /__ \\ / ___/")
print(" / /_/ / /| / __/ _ \\/ __ \\/ __ / | | / /__/ / ____ \\__ \\ ")
print(" / ____/ // / /_/ __/ / / / /_/ / | |/ // __/ /___/__ / / ")
print("/_/ /_//_/|_\\__/\\___/_/ /_/\\__,_/ |___//____/ /____/ ")
print("")
print(strSlogan1)
print("")
# -----------------------------------------------------------------
# Create instance - SPI communication starts automatically
# -----------------------------------------------------------------
p = PiXtendV2S()
# -----------------------------------------------------
# Main Program
# -----------------------------------------------------
if p is not None:
print("Running Main Program - Hit Ctrl + C to exit")
# Set some variables needed in the main loop
is_config = False
cycle_counter = 0
while True:
try:
# Check if SPI communication is running and the received data is correct
if p.crc_header_in_error is False and p.crc_data_in_error is False:
cycle_counter += 1
if not is_config:
is_config = True
print("One time configuration: Setting the relays and digital outputs in an alternating pattern")
print("The value False = OFF and the value True = ON")
print("")
# Setting the relays and digital outputs to a pattern which can be toggled later.
# Side effect: the LEDs on the PiXtend V2 -S- board alternate nicely back and forth.
p.relay0 = p.ON
p.relay1 = p.OFF
p.relay2 = p.ON
p.relay3 = p.OFF
p.digital_out0 = p.ON
p.digital_out1 = p.OFF
p.digital_out2 = p.ON
p.digital_out3 = p.OFF
# clear the text on screen
str_text = " \n"
for i in range(0, 27, 1):
str_text += " \n"
str_text += " "
# Print text to console
print(str_text, end="\r")
# Reset cursor
for i in range(0, 28, 1):
sys.stdout.write("\x1b[A")
# Print the info text to console
str_text = "Cycle No.: {0}\n".format(cycle_counter)
str_text += " \n"
str_text += "PiXtend V2 -S- Info:\n"
str_text += "Firmware: {0}\n".format(p.firmware)
str_text += "Hardware: {0}\n".format(p.hardware)
str_text += "Model: {0}\n".format(chr(p.model_in))
str_text += " \n"
str_text += "Digital Inputs:\n"
str_text += "DigitalIn0: {0}\n".format(p.digital_in0)
str_text += "DigitalIn1: {0}\n".format(p.digital_in1)
str_text += "DigitalIn2: {0}\n".format(p.digital_in2)
str_text += "DigitalIn3: {0}\n".format(p.digital_in3)
str_text += "DigitalIn4: {0}\n".format(p.digital_in4)
str_text += "DigitalIn5: {0}\n".format(p.digital_in5)
str_text += "DigitalIn6: {0}\n".format(p.digital_in6)
str_text += "DigitalIn7: {0}\n".format(p.digital_in7)
str_text += " \n"
str_text += "Digital Outputs:\n"
str_text += "DigitalOut0: {0}\n".format(p.digital_out0)
str_text += "DigitalOut1: {0}\n".format(p.digital_out1)
str_text += "DigitalOut2: {0}\n".format(p.digital_out2)
str_text += "DigitalOut3: {0}\n".format(p.digital_out3)
str_text += " \n"
str_text += "Relays:\n"
str_text += "Relay0: {0}\n".format(p.relay0)
str_text += "Relay1: {0}\n".format(p.relay1)
str_text += "Relay2: {0}\n".format(p.relay2)
str_text += "Relay3: {0}\n".format(p.relay3)
str_text += " "
# Print text to console
print(str_text, end="\r")
# Reset cursor
for i in range(0, 28, 1):
sys.stdout.write("\x1b[A")
# Toggle the relays and digital outputs on and off
p.relay0 = not p.relay0
p.relay1 = not p.relay1
p.relay2 = not p.relay2
p.relay3 = not p.relay3
p.digital_out0 = not p.digital_out0
p.digital_out1 = not p.digital_out1
p.digital_out2 = not p.digital_out2
p.digital_out3 = not p.digital_out3
else:
for i in range(0, 29, 1):
print("")
print("")
print("Communication error, the data from the microcontroller is not correct!")
print("Leaving the application. Please check that the Raspberry Pi can communicate")
print("with the microcontroller on the PiXtend V2 -S- board.")
print("")
p.digital_out0 = p.OFF
p.digital_out1 = p.OFF
p.digital_out2 = p.OFF
p.digital_out3 = p.OFF
p.relay0 = p.OFF
p.relay1 = p.OFF
p.relay2 = p.OFF
p.relay3 = p.OFF
time.sleep(0.25)
p.close()
p = None
break
# Wait some time, SPI communication will continue in the background
time.sleep(1)
except KeyboardInterrupt:
# Keyboard interrupt caught, Ctrl + C, now clean up and leave program
for i in range(0, 29, 1):
print("")
print(strSlogan2)
p.digital_out0 = p.OFF
p.digital_out1 = p.OFF
p.digital_out2 = p.OFF
p.digital_out3 = p.OFF
p.relay0 = p.OFF
p.relay1 = p.OFF
p.relay2 = p.OFF
p.relay3 = p.OFF
time.sleep(0.25)
p.close()
p = None
break
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