/*
 simple gui controlled frequency generator

 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

 22.05.06 first version by mchris
 
 serial communication with python and Arduino: 
 https://create.arduino.cc/projecthub/ansh2919/serial-communication-between-python-and-arduino-e7cce0
 
*/
 
#define FREQENCY_PIN 8

int frequency;

void setup() 
{
 Serial.begin(115200);
 Serial.setTimeout(1);
}

void loop() 
{
 while (!Serial.available());
 frequency = Serial.readString().toInt();
 
 tone(FREQENCY_PIN,frequency);
 
 Serial.print(frequency);
}

// Python gui script for PC controll
/*

import tkinter as tk
from tkinter import ttk

import serial
import time

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

LARGE_FONT= ("Verdana", 12)

mainWindow = tk.Tk()

mainWindow.geometry("1024x640")
mainWindow.title('frequency controller')

def sendValue(value):
    arduino.write(bytes(value, 'utf-8'))
    time.sleep(0.05)
    data = arduino.readline()
    print(data)
    
#===================== Button ======================================

button1 = ttk.Button(mainWindow, text="100Hz", command=lambda: sendValue('100'))
button1.place(x=400, y=200)

button2 = ttk.Button(mainWindow, text="1000Hz", command=lambda: sendValue('1000'))
button2.place(x=400, y=400)

mainWindow.mainloop()

*/