/*
  simple gui to test the serial communication between an Arduino and the PC

  It has 3 buttons:
  - up counter
  - down counter
  - adc read

  setup:
  1. programm your Arduino
  2. addapt the serial port in your python script to the serial port used on your PC
  3. run the python script

  PC: python with tkinter and pyserial
  MC: any Arduino

  22.05.07 first version by mchris

  serial communication with python and Arduino:
  https://create.arduino.cc/projecthub/ansh2919/serial-communication-between-python-and-arduino-e7cce0

*/

int Zaehler = 0;

void setup()
{
  Serial.begin(115200);
}

void loop()
{
  while (!Serial.available());
  uint8_t c = Serial.read();

  switch (c)
  {
    case 'h':
      {
        Zaehler++;
        Serial.println(Zaehler);
      } break;

    case 'r':
      {
        Zaehler--;
        Serial.println(Zaehler);
      } break;

    case 'a':
      {
        Serial.println(analogRead(A0));
      } break;
  }

}

// Python gui script for PC control
/*

import matplotlib
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
from matplotlib.figure import Figure
import tkinter as tk
from tkinter import ttk
import serial

McSeriallPort='/dev/ttyACM0'
arduino = serial.Serial(port= McSeriallPort , baudrate=115200, timeout=.1)

LARGE_FONT= ("Verdana", 12)
Hauptfenster = tk.Tk()
Hauptfenster.geometry("800x600")
Hauptfenster.title('serielle Kommunikation Zaehler')

Anzeiger_portName=ttk.Label(Hauptfenster, text="benutzer serieller Anschluss:  "+McSeriallPort)   
Anzeiger_portName.place(x=20,y=10)

Werte=[]

def neueWerte(canvasRef,plotRef,comand):
  
  arduino.write(bytes(comand, 'utf-8'))
  data = arduino.readline()
  print(int(data))
  Werte.append(int(data))
  print(Werte)
  
  plotRef.cla() # clear graph

  plotRef.plot(Werte,'-o')
  plotRef.grid()
  
  canvasRef.draw()
  canvasRef.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)


#===================== GRAPH ========================================

Unterfenster = tk.Frame(Hauptfenster)
Unterfenster.place(x=20,y=50);
f = Figure(figsize=(6,4), dpi=100)
a = f.add_subplot(111)
a.plot([1,2,3,4,5,6,7,8],[1,2,1,3,8,9,3,5])
a.grid()
canvas = FigureCanvasTkAgg(f, master=Unterfenster)
canvas.draw()
canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.BOTH, expand=1)


#===================== Knoepfe ======================================

KNOPF_adc_lesen = ttk.Button(Hauptfenster, text="adc lesen", command=lambda: neueWerte(canvas,a,'a'))
KNOPF_adc_lesen.place(x=100, y=500)

KNOPF_hoch = ttk.Button(Hauptfenster, text="hoch zaehlen", command=lambda: neueWerte(canvas,a,'h'))
KNOPF_hoch.place(x=340, y=500)

KNOPF_runter = ttk.Button(Hauptfenster, text="runter zaehlen", command=lambda: neueWerte(canvas,a,'r'))
KNOPF_runter.place(x=500, y=500)

Hauptfenster.mainloop()
*/