#!/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 or # # Copyright (C) 2018 Robin Turner # Qube Solutions GmbH, 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 . from __future__ import print_function # Import PiXtend V2 class from pixtendv2l import PiXtendV2L 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 = PiXtendV2L() # ----------------------------------------------------- # 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 -L- 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 p.digital_out4 = p.ON p.digital_out5 = p.OFF p.digital_out6 = p.ON p.digital_out7 = p.OFF p.digital_out8 = p.ON p.digital_out9 = p.OFF p.digital_out10 = p.ON p.digital_out11 = p.OFF # clear the text on screen str_text = " \n" for i in range(0, 43, 1): str_text += " \n" str_text += " " # Print text to console print(str_text, end="\r") # Reset cursor for i in range(0, 44, 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 -L- 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 += "DigitalIn00: {0}\n".format(p.digital_in0) str_text += "DigitalIn01: {0}\n".format(p.digital_in1) str_text += "DigitalIn02: {0}\n".format(p.digital_in2) str_text += "DigitalIn03: {0}\n".format(p.digital_in3) str_text += "DigitalIn04: {0}\n".format(p.digital_in4) str_text += "DigitalIn05: {0}\n".format(p.digital_in5) str_text += "DigitalIn06: {0}\n".format(p.digital_in6) str_text += "DigitalIn07: {0}\n".format(p.digital_in7) str_text += "DigitalIn08: {0}\n".format(p.digital_in8) str_text += "DigitalIn09: {0}\n".format(p.digital_in9) str_text += "DigitalIn10: {0}\n".format(p.digital_in10) str_text += "DigitalIn11: {0}\n".format(p.digital_in11) str_text += "DigitalIn12: {0}\n".format(p.digital_in12) str_text += "DigitalIn13: {0}\n".format(p.digital_in13) str_text += "DigitalIn14: {0}\n".format(p.digital_in14) str_text += "DigitalIn15: {0}\n".format(p.digital_in15) str_text += " \n" str_text += "Digital Outputs:\n" str_text += "DigitalOut00: {0}\n".format(p.digital_out0) str_text += "DigitalOut01: {0}\n".format(p.digital_out1) str_text += "DigitalOut02: {0}\n".format(p.digital_out2) str_text += "DigitalOut03: {0}\n".format(p.digital_out3) str_text += "DigitalOut04: {0}\n".format(p.digital_out4) str_text += "DigitalOut05: {0}\n".format(p.digital_out5) str_text += "DigitalOut06: {0}\n".format(p.digital_out6) str_text += "DigitalOut07: {0}\n".format(p.digital_out7) str_text += "DigitalOut08: {0}\n".format(p.digital_out8) str_text += "DigitalOut09: {0}\n".format(p.digital_out9) str_text += "DigitalOut10: {0}\n".format(p.digital_out10) str_text += "DigitalOut11: {0}\n".format(p.digital_out11) 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, 44, 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 p.digital_out4 = not p.digital_out4 p.digital_out5 = not p.digital_out5 p.digital_out6 = not p.digital_out6 p.digital_out7 = not p.digital_out7 p.digital_out8 = not p.digital_out8 p.digital_out9 = not p.digital_out9 p.digital_out10 = not p.digital_out10 p.digital_out11 = not p.digital_out11 else: for i in range(0, 45, 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 -L- board.") print("") p.digital_out0 = p.OFF p.digital_out1 = p.OFF p.digital_out2 = p.OFF p.digital_out3 = p.OFF p.digital_out4 = p.OFF p.digital_out5 = p.OFF p.digital_out6 = p.OFF p.digital_out7 = p.OFF p.digital_out8 = p.OFF p.digital_out9 = p.OFF p.digital_out10 = p.OFF p.digital_out11 = p.OFF p.relay0 = p.OFF p.relay1 = p.OFF p.relay2 = p.OFF p.relay3 = p.OFF p.close() del p 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, 45, 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.digital_out4 = p.OFF p.digital_out5 = p.OFF p.digital_out6 = p.OFF p.digital_out7 = p.OFF p.digital_out8 = p.OFF p.digital_out9 = p.OFF p.digital_out10 = p.OFF p.digital_out11 = p.OFF p.relay0 = p.OFF p.relay1 = p.OFF p.relay2 = p.OFF p.relay3 = p.OFF p.close() del p p = None break