# RasPi <---> Arduino serial test -2024.2.16-

import serial
import time

#ser = serial.Serial('/dev/ttyUSB0', 115200)
ser = serial.Serial('/dev/ttyUSB0', 9600)
time.sleep(3)

print('START')
command = 'aaa.'
ser.write(command.encode('UTF-8'))

i = 0

def serRead():
    get_data = ser.readline()
    if get_data != "":
        data = get_data.strip().decode('UTF-8')
        print(data)
        return True
    return False

try:
    while True:
        if serRead():
            i += 1
            if i == 1:
                command = 'bbb.'
                ser.write(command.encode('UTF-8'))
            elif i == 2:
                command = 'ccc.'
                ser.write(command.encode('UTF-8'))
        time.sleep(2)

except KeyboardInterrupt:
    ser.close()
    print('END')