#test_anyButton.py
#
#anyButton.py  Function
# by D@CC on 2023CMar23
# Minicom >>>minicom -o -D /dev/ttyACM0
import time
import board
from digitalio import DigitalInOut, Direction

def anyButton(device,isInUse0):
    # this routine monitors 8 buttons on the Wio Terminal
    # it returns the name of the button that is pressed (or "none")
    # the list of 8 buttons are named:
    
    bList=['SWITCH_PRESS', 'SWITCH_DOWN', 'SWITCH_LEFT',  'SWITCH_RIGHT', 'SWITCH_UP','BUTTON_1', 'BUTTON_2', 'BUTTON_3']
    # The names in the board function library can be seen using the statement dir(board)
    #
    isInUse0=False
    result="None"  
    if not device == "Wio Terminal" :
        print("device must be 'Wio Terminal'")
        return result
    else :
        lenList=len(bList)
        lenList=1
        #initially on the center uJoyStick button will be monitored
        for i in range(lenList) :
            if i==0:
                # set up the next button
                if isInUse0 == False :
                    isInUse0= True
                    button = DigitalInOut(board.SWITCH_PRESS)
                    button.direction = Direction.INPUT
                #if end
                isPressed=False   #is Pressed is False until a button is pressed
                while isPressed==False:
                    isUp = button.value
                    #  isUp = True when button not pressed
                    #  isUp = False when button is pressed
                    if isUp== False :  #meaning the button was pressed.
                        print("in anyButton, a button was pressed")
                        buttonName=bList[0] # bList[0] is 'SWITCH_PRESS'
                        print(buttonName," was pressed.")
                        isPressed=True # takes us out of the while loop
                        #break  #out of the while loop
                     #if end
                #while end
            #if end
            time.sleep(1)	# don't stay in a tight loop
            print("in anyButton, after sleep")
        #for end   
    #if end
    return buttonName
#def end

progname="test_anyButton.py"
isInUse0=False
print("isInUse0:",isInUse0)
while True :
    print("while monitoring buttons at 21:42. . . ")
    buttonPressed = anyButton("Wio Terminal",isInUse0)
    print("in main,after anyButton, saw:",buttonPressed)
    time.sleep(1)
#while end
    #/test_anyButton.py