# pygame_mbot_module.py vom 21.11.2024
rot = (255,0,0); gruen = (0,255,0); blau = (0,0,255)
gelb = ( 230, 230, 0)
rot_ein = (255,0,0);    rot_aus = (155,0,0)
blau_ein = (0,0, 255);  blau_aus = (0,0,155)
gruen_ein = (0,255,0);  gruen_aus = (0,155,0)
schwarz = ( 0, 0, 0)
weiss   = ( 255, 255, 255)
grau = (111,111,111)

import pygame, time

global fenster    

def mache_fenster(titel,lx,ly):
    global fenster
    pygame.init()
    pygame.display.set_caption(titel)
    fenster = pygame.display.set_mode([lx,ly])
    return fenster

def text_typer(text) :
    font = pygame.font.SysFont("arial", 25)
    text = font.render(text, True, weiss)
    textrect = text.get_rect()
    textrect.centerx = fenster.get_rect().centerx
    textrect.centery = fenster.get_rect().centery
    fenster.fill((0, 0, 0))
    fenster.blit(text, textrect)
 
    pygame.display.update() 
    time.sleep(1)

def text_typer_xy(text,x,y, size, farbe) :
    font = pygame.font.SysFont("arial", size)
    text = font.render(text, True, farbe)
    textrect = text.get_rect()
    textrect.centerx = x
    textrect.centery = y
    fenster.blit(text, textrect)

# mrge_communication_pc.py  2023-01-29
import serial
import serial.tools.list_ports

global ser
def ser_init(COM_PORT, COM_BAUDRATE):

    print( COM_PORT, COM_BAUDRATE)
    try:
        ser = serial.Serial( COM_PORT, COM_BAUDRATE, bytesize=serial.EIGHTBITS,
                             parity=serial.PARITY_NONE, timeout=1 )
    except OSError as err:       # except - ausgenommen
        print("OSError: " ,err)
        port_list()
        return "error"
    except:
        print("init()-Fehler")
        return None
    return ser

def port_list():
    import serial.tools.list_ports  # nicht in serail vorhanden
    print("\nListe der verfügbaren COM-Ports\n")
    for p in list(serial.tools.list_ports.comports()):
        print( " - ", str(p).split(" - ") )

if __name__=='__main__':
    fenster = mache_fenster("Test für mich",400,300)
    fenster.fill(gelb)
    text_typer("Hello")
    text_typer("Young Engineers")
    pygame.display.update() 

    fenster.fill(gelb)
 
    text_typer_xy("BLAU",40,20,20,rot)
    text_typer_xy("ROT",fenster.get_rect().width-40,fenster.get_rect().height-20,20,blau)
    for i in range(3):
        text_typer_xy(f'Ende in {3-i} Sekunden',fenster.get_rect().centerx+i*22,fenster.get_rect().centery+i*22, 22,blau)
        pygame.display.update() 
        time.sleep(1)
    pygame.quit()
    
    COM_PORT = "COM14"; COM_BAUDRATE = 9600
    
    print(f"Teste serielle Vebindung zu {COM_PORT} mit {COM_BAUDRATE} Baud")
    
    ser = ser_init(COM_PORT, COM_BAUDRATE)
    if ser=='error':
        print("Verbindung gescheitert")
        SystemExit
    else:
        print("Lese Daten vom mBot")
        cnt = 21
        while ser.inWaiting!=0 and cnt!=0:
            msg = ser.readline()
            #msg = msg.decode().rstrip()
            cnt -= 1
            print(cnt,msg)
        ser.close() # funktioniert nicht
        ser
        print("CTRL+F2 für 'Stopp/Restart ausführen' per Hand in Thonny")