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--- module:micropython:esp32displaykey:esp32displaykey [2021/12/25 14:07] – [Library-Module: .py] omdevelop
+++ module:micropython:esp32displaykey:esp32displaykey [2022/09/13 11:58] (current) – external edit 127.0.0.1
@@ Line 18: / Line 18: @@
   * minimale Zeit zur Erkennung von Tastenwiederholungen: ZeitTIME_KEYREPETITION = 0.5
   * Eigener Thread mit permanenter Tastatur-Abfrage
+  * Entprellung über TIME_KEYPRESSES
+  * Tasten-Wiederholung über TIME_KEYREPETITION
   * MainLoop: periodische Abfrage GetKeyCode()
   * Keys beim IT01:
@@ Line 42: / Line 44: @@
 ===== Version =====
-{{:module:micropython:Esp32DisplayKey:2112251329_Esp32DisplayKey_01V02.zip | 2112251329_Esp32DisplayKey_01V02.zip}}
+{{:module:micropython:Esp32DisplayKey:2112251413_Esp32DisplayKey_01V03.zip | 2112251413_Esp32DisplayKey_01V03.zip}}
 ===== Beschreibung =====
+{{:module:micropython:Esp32DisplayKey:2112251421_Esp32DisplayKey_01V03.png?600|2112251421_Esp32DisplayKey_01V03.png}}
 ==== Ausgabe MicroPython-Terminal: Esp32CheckDisplayKey.py ====
   * Ausgabe der KeyCodes (mit Wiederholungen)
@@ Line 70: / Line 73: @@
 >>>
 </code>
-==== Haupt-Module: Esp32CheckDisplayKey.py ====
+==== Library-Module: Define.py ====
+<code python>
+#
+#-----------------------------------------
+#   Uart0 / 1 / 2
+#-----------------------------------------
+ID_UART0     =  0
+PIN_UART0_TX =  1 # USB
+PIN_UART0_RX =  3 # USB
+#
+ID_UART1     =  1
+PIN_UART1_RX = 25 #  9 - not usable
+PIN_UART1_TX = 26 # 10 - not usable
+#
+ID_UART2     =  2
+PIN_UART2_RX = 16
+PIN_UART2_TX = 17
+#
+#-----------------------------------------
+#   LCDisplayI2C
+#-----------------------------------------
+I2CADDRESS_LCDISPLAY_T  = 0x27
+I2CADDRESS_LCDISPLAY_A  = 0x3F
+#
+LCDISPLAY_COUNT_ROWS    = 4
+LCDISPLAY_COUNT_COLUMNS = 20
+#
+#-----------------------------------------
+#   Keyboard4x4
+#-----------------------------------------
+PIN_KEYBOARD_IN0 = 39
+PIN_KEYBOARD_IN1 = 36
+PIN_KEYBOARD_IN2 = 34
+PIN_KEYBOARD_IN3 = 35
+PIN_KEYBOARD_OUT0 = 13
+PIN_KEYBOARD_OUT1 = 12
+PIN_KEYBOARD_OUT2 = 14
+PIN_KEYBOARD_OUT3 = 27
+#
+SIZE_KEYCODEBUFFER = 5
+TIME_KEYPRESSED = 0.1
+TIME_KEYREPETITION = 0.5
+#
+</code>
+==== Main-Module: Esp32CheckDisplayKey.py ====
 <code python>
 #
@@ Line 120: / Line 170: @@
-==== Main-Program: Esp32CheckUart.py ====
+==== Library-Module: Keyboard4x4.py ====
-<code python>
-</code>
-==== Library-Module: Uart.py ====
-<code python>
-</code>
-==== Library-Module: LCDisplayI2C.py ====
 <code python>
 #
-"""Implements a HD44780 character LCD connected via PCF8574 on I2C"""
-#
-from LCDisplay import CLCDisplay
-from time import sleep_ms
-#
-# The PCF8574 has a jumper selectable address: 0x20 - 0x27
-DEFAULT_I2C_ADDR = 0x27
-#
-MASK_RS = 0x01
-MASK_RW = 0x02
-MASK_E = 0x04
-SHIFT_BACKLIGHT = 3
-SHIFT_DATA = 4
-#
-class CLCDisplayI2C(CLCDisplay):
-    #
-    def __init__(self, i2c, i2caddress, countrows, countcolumns):
-        self.I2C = i2c
-        self.I2CAddress = i2caddress
-        self.I2C.writeto(self.I2CAddress, bytearray([0]))
-        sleep_ms(20)   # Allow LCD time to powerup
-        # Send reset 3 times
-        self.hal_write_init_nibble(self.LCD_FUNCTION_RESET)
-        sleep_ms(5)    # need to delay at least 4.1 msec
-        self.hal_write_init_nibble(self.LCD_FUNCTION_RESET)
-        sleep_ms(1)
-        self.hal_write_init_nibble(self.LCD_FUNCTION_RESET)
-        sleep_ms(1)
-        # Put LCD into 4 bit mode
-        self.hal_write_init_nibble(self.LCD_FUNCTION)
-        sleep_ms(1)
-        CLCDisplay.__init__(self, countrows, countcolumns)
-        cmd = self.LCD_FUNCTION
-        if countrows > 1:
-            cmd |= self.LCD_FUNCTION_2LINES
-        self.hal_write_command(cmd)
-    #
-    def hal_write_init_nibble(self, nibble):
-        byte = ((nibble >> 4) & 0x0f) << SHIFT_DATA
-        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
-    #
-    def hal_backlight_on(self):
-        self.I2C.writeto(self.I2CAddress, bytearray([1 << SHIFT_BACKLIGHT]))
-    #
-    def hal_backlight_off(self):
-        self.I2C.writeto(self.I2CAddress, bytearray([0]))
-    #
-    def hal_write_command(self, cmd):
-        """Data is latched on the falling edge of E."""
-        byte = ((self.Backlight << SHIFT_BACKLIGHT) | (((cmd >> 4) & 0x0f) << SHIFT_DATA))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
-        byte = ((self.Backlight << SHIFT_BACKLIGHT) | ((cmd & 0x0f) << SHIFT_DATA))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
-        if cmd <= 3: # The home and clear commands require a worst case delay of 4.1 msec
-            sleep_ms(5)
-    #
-    def hal_write_data(self, data):
-        byte = (MASK_RS | (self.Backlight << SHIFT_BACKLIGHT) | (((data >> 4) & 0x0f) << SHIFT_DATA))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
-        byte = (MASK_RS | (self.Backlight << SHIFT_BACKLIGHT) | ((data & 0x0f) << SHIFT_DATA))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
-        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
-    #
-#
-</code>
-==== Library-Module: Thread.py ====
-<code python>
 import time
-import _thread as THR
+from machine import Pin
 #
-# States - EStateThread :
+import Define as DEF
-stIdle = 0
+import Thread as THR
-stBusy = 1
-stEnd = 2
 #
-class CThread():
+class CKeyboard4x4():
-    #
+    #-----------------------------------------------------------------
-    def __init__(self, onstart, onbusy, onabort, onend):
+    #   Constructor
-        self.State = stIdle
+    #-----------------------------------------------------------------
-        self.Thread = None
+    def __init__(self, \
-        self.OnStart = onstart
+                 pinin0, pinin1, pinin2, pinin3, \
-        self.OnBusy = onbusy
+                 pinout0, pinout1, pinout2, pinout3):
-        self.OnAbort = onabort
+        #
-        self.OnEnd = onend
+        self.CountRepeat = 3
+        self.KeySleep = 0.001
+        #
+        self.PinIn = []
+        self.PinIn.append(Pin(pinin0, mode=Pin.IN, pull=Pin.PULL_DOWN))
+        self.PinIn.append(Pin(pinin1, mode=Pin.IN, pull=Pin.PULL_DOWN))
+        self.PinIn.append(Pin(pinin2, mode=Pin.IN, pull=Pin.PULL_DOWN))
+        self.PinIn.append(Pin(pinin3, mode=Pin.IN, pull=Pin.PULL_DOWN))
+        #
+        self.PinOut = []
+        self.PinOut.append(Pin(pinout0, mode=Pin.OUT, pull=Pin.PULL_DOWN))
+        self.PinOut.append(Pin(pinout1, mode=Pin.OUT, pull=Pin.PULL_DOWN))
+        self.PinOut.append(Pin(pinout2, mode=Pin.OUT, pull=Pin.PULL_DOWN))
+        self.PinOut.append(Pin(pinout3, mode=Pin.OUT, pull=Pin.PULL_DOWN))
+        #
+        self.Thread = THR.CThread(self.CBOnStart, self.CBOnBusy, self.CBOnAbort, self.CBOnEnd)
+        #
+        self.KeyCodes = []
         return
     #
-    def Start(self):
+    #-----------------------------------------------------------------
-        self.State = stBusy
+    #   Callback
-        if (None != self.OnStart):
+    #-----------------------------------------------------------------
-            self.OnStart(self)
+    def CBOnStart(self, thread):
-        self.ThreadID = THR.start_new_thread(self.CBOnExecute, [self])
-        return
-    #
-    def Abort(self):
-        self.State = stEnd
-        if (None != self.OnAbort):
-            self.OnAbort(self)
         return
-    #
+    def CBOnBusy(self, thread):
-    def CBOnExecute(self, thread):
+        while (THR.stBusy == self.Thread.State):
-        if (None != self.OnBusy):
+            KeyCode0 = 0x00
-            self.OnBusy(self)
+            KeyCode1 = 0x00
-        if (None != self.OnEnd):
+            KeyCode2 = 0x00
-            self.OnEnd(self)
+            KeyCode3 = 0x00
+            #-----------------------------------------
+            # Row0
+            #-----------------------------------------
+            self.PinOut[0].on()
+            self.PinOut[1].off()
+            self.PinOut[2].off()
+            self.PinOut[3].off()
+            CS0 = 0
+            CS1 = 0
+            CS2 = 0
+            CS3 = 0
+            for SI in range(0, self.CountRepeat):
+                CS0 += self.PinIn[0].value()
+                CS1 += self.PinIn[1].value()
+                CS2 += self.PinIn[2].value()
+                CS3 += self.PinIn[3].value()
+                time.sleep(self.KeySleep)
+            if (self.CountRepeat <= CS0):
+                KeyCode0 = 0x11
+            if (self.CountRepeat <= CS1):
+                KeyCode0 = 0x21
+            if (self.CountRepeat <= CS2):
+                KeyCode0 = 0x41
+            if (self.CountRepeat <= CS3):
+                KeyCode0 = 0x81
+            #-----------------------------------------
+            # Row1
+            #-----------------------------------------
+            self.PinOut[0].off()
+            self.PinOut[1].on()
+            self.PinOut[2].off()
+            self.PinOut[3].off()
+            CS0 = 0
+            CS1 = 0
+            CS2 = 0
+            CS3 = 0
+            for SI in range(0, self.CountRepeat):
+                CS0 += self.PinIn[0].value()
+                CS1 += self.PinIn[1].value()
+                CS2 += self.PinIn[2].value()
+                CS3 += self.PinIn[3].value()
+                time.sleep(self.KeySleep)
+            if (self.CountRepeat <= CS0):
+                KeyCode1 = 0x12
+            if (self.CountRepeat <= CS1):
+                KeyCode1 = 0x22
+            if (self.CountRepeat <= CS2):
+                KeyCode1 = 0x42
+            if (self.CountRepeat <= CS3):
+                KeyCode1 = 0x82
+            #-----------------------------------------
+            # Row2
+            #-----------------------------------------
+            self.PinOut[0].off()
+            self.PinOut[1].off()
+            self.PinOut[2].on()
+            self.PinOut[3].off()
+            CS0 = 0
+            CS1 = 0
+            CS2 = 0
+            CS3 = 0
+            for SI in range(0, self.CountRepeat):
+                CS0 += self.PinIn[0].value()
+                CS1 += self.PinIn[1].value()
+                CS2 += self.PinIn[2].value()
+                CS3 += self.PinIn[3].value()
+                time.sleep(self.KeySleep)
+            if (self.CountRepeat <= CS0):
+                KeyCode2 = 0x14
+            if (self.CountRepeat <= CS1):
+                KeyCode2 = 0x24
+            if (self.CountRepeat <= CS2):
+                KeyCode2 = 0x44
+            if (self.CountRepeat <= CS3):
+                KeyCode2 = 0x84
+            #-----------------------------------------
+            # Row3
+            #-----------------------------------------
+            self.PinOut[0].off()
+            self.PinOut[1].off()
+            self.PinOut[2].off()
+            self.PinOut[3].on()
+            CS0 = 0
+            CS1 = 0
+            CS2 = 0
+            CS3 = 0
+            for SI in range(0, self.CountRepeat):
+                CS0 += self.PinIn[0].value()
+                CS1 += self.PinIn[1].value()
+                CS2 += self.PinIn[2].value()
+                CS3 += self.PinIn[3].value()
+                time.sleep(self.KeySleep)
+            if (self.CountRepeat <= CS0):
+                KeyCode3 = 0x18
+            if (self.CountRepeat <= CS1):
+                KeyCode3 = 0x28
+            if (self.CountRepeat <= CS2):
+                KeyCode3 = 0x48
+            if (self.CountRepeat <= CS3):
+                KeyCode3 = 0x88
+            #
+            if (0 < KeyCode0):
+                self.KeyCodes.append(KeyCode0)
+            if (0 < KeyCode1):
+                self.KeyCodes.append(KeyCode1)
+            if (0 < KeyCode2):
+                self.KeyCodes.append(KeyCode2)
+            if (0 < KeyCode3):
+                self.KeyCodes.append(KeyCode3)
+            #
+            while (DEF.SIZE_KEYCODEBUFFER < len(self.KeyCodes)):
+                self.KeyCodes.pop(0)
+            #
+            if (0 < len(self.KeyCodes)):
+                time.sleep(DEF.TIME_KEYREPETITION)
+            else:
+                time.sleep(DEF.TIME_KEYPRESSED)
         return
-    #
+    def CBOnAbort(self, thread):
-#
+        return
-#-------------------------------------------------------------
+    def CBOnEnd(self, thread):
-#    Check Library
+        return
-#-------------------------------------------------------------
+    #-----------------------------------------------------------------
-def OnStart(thread):
+    #   Manager
-    return
+    #-----------------------------------------------------------------
-def OnBusy(thread):
+    def Open(self):
-    while (stBusy == thread.State):
+        self.Thread.Start()
-        print('.')
+        return
-        time.sleep(0.5)
+    def Close(self):
-    return
+        self.Thread.Abort()
-def OnAbort(thread):
+        return
-    return
+    def GetKeyCode(self):
-def OnEnd(thread):
+        if (0 < len(self.KeyCodes)):
-    return
+            KC = self.KeyCodes.pop(0)
+            return KC
+        return 0
 #
-if ('__main__' == __name__):
+#------------------------------------------------------------------
-    print('*** Check Thread: begin')
+#   Check Library
+#------------------------------------------------------------------
+if '__main__' == __name__:
+    print('*** Check Keyboard4x4: begin')
     #
-    Thread = CThread(OnStart, OnBusy, OnAbort, OnEnd)
+    Keyboard = CKeyboard4x4(DEF.PIN_KEYBOARD_IN0, DEF.PIN_KEYBOARD_IN1,
-    Thread.Start()
+                            DEF.PIN_KEYBOARD_IN2, DEF.PIN_KEYBOARD_IN3,
-    time.sleep(5.0)
+                            DEF.PIN_KEYBOARD_OUT0, DEF.PIN_KEYBOARD_OUT1,
-    Thread.Abort()
+                            DEF.PIN_KEYBOARD_OUT2, DEF.PIN_KEYBOARD_OUT3)
+    # Open
+    Keyboard.Open()
+    # MainLoop ....
+    for I in range(0, 10000):
+        KC = Keyboard.GetKeyCode()
+        if (0 < KC):
+            print(KC)
+        time.sleep(0.001)
+    # Close
+    Keyboard.Close()
+    #
+    print('*** Check Keyboard4x4: end')
     #
-    print('*** Check Thread: end')
 #
-</code>
-==== Library-Module: .py ====
-<code python>
-</code>
-==== Library-Module: .py ====
-<code python>
-</code>
-==== Library-Module: .py ====
-<code python>
 </code>
@@ Line 432: / Line 530: @@
 </code>
-==== Library-Module: Define.py ====
+==== Library-Module: LCDisplayI2C.py ====
 <code python>
 #
-#-----------------------------------------
+"""Implements a HD44780 character LCD connected via PCF8574 on I2C"""
-#   Uart0 / 1 / 2
-#-----------------------------------------
-ID_UART0     =  0
-PIN_UART0_TX =  1 # USB
-PIN_UART0_RX =  3 # USB
 #
-ID_UART1     =  1
+from LCDisplay import CLCDisplay
-PIN_UART1_RX = 25 #  9 - not usable
+from time import sleep_ms
-PIN_UART1_TX = 26 # 10 - not usable
 #
-ID_UART2     =  2
+# The PCF8574 has a jumper selectable address: 0x20 - 0x27
-PIN_UART2_RX = 16
+DEFAULT_I2C_ADDR = 0x27
-PIN_UART2_TX = 17
 #
-#-----------------------------------------
+MASK_RS = 0x01
-#   LCDisplayI2C
+MASK_RW = 0x02
-#-----------------------------------------
+MASK_E = 0x04
-I2CADDRESS_LCDISPLAY_T  = 0x27
+SHIFT_BACKLIGHT = 3
-I2CADDRESS_LCDISPLAY_A  = 0x3F
+SHIFT_DATA = 4
 #
-LCDISPLAY_COUNT_ROWS    = 4
+class CLCDisplayI2C(CLCDisplay):
-LCDISPLAY_COUNT_COLUMNS = 20
+    #
+    def __init__(self, i2c, i2caddress, countrows, countcolumns):
+        self.I2C = i2c
+        self.I2CAddress = i2caddress
+        self.I2C.writeto(self.I2CAddress, bytearray([0]))
+        sleep_ms(20)   # Allow LCD time to powerup
+        # Send reset 3 times
+        self.hal_write_init_nibble(self.LCD_FUNCTION_RESET)
+        sleep_ms(5)    # need to delay at least 4.1 msec
+        self.hal_write_init_nibble(self.LCD_FUNCTION_RESET)
+        sleep_ms(1)
+        self.hal_write_init_nibble(self.LCD_FUNCTION_RESET)
+        sleep_ms(1)
+        # Put LCD into 4 bit mode
+        self.hal_write_init_nibble(self.LCD_FUNCTION)
+        sleep_ms(1)
+        CLCDisplay.__init__(self, countrows, countcolumns)
+        cmd = self.LCD_FUNCTION
+        if countrows > 1:
+            cmd |= self.LCD_FUNCTION_2LINES
+        self.hal_write_command(cmd)
+    #
+    def hal_write_init_nibble(self, nibble):
+        byte = ((nibble >> 4) & 0x0f) << SHIFT_DATA
+        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
+    #
+    def hal_backlight_on(self):
+        self.I2C.writeto(self.I2CAddress, bytearray([1 << SHIFT_BACKLIGHT]))
+    #
+    def hal_backlight_off(self):
+        self.I2C.writeto(self.I2CAddress, bytearray([0]))
+    #
+    def hal_write_command(self, cmd):
+        """Data is latched on the falling edge of E."""
+        byte = ((self.Backlight << SHIFT_BACKLIGHT) | (((cmd >> 4) & 0x0f) << SHIFT_DATA))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
+        byte = ((self.Backlight << SHIFT_BACKLIGHT) | ((cmd & 0x0f) << SHIFT_DATA))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
+        if cmd <= 3: # The home and clear commands require a worst case delay of 4.1 msec
+            sleep_ms(5)
+    #
+    def hal_write_data(self, data):
+        byte = (MASK_RS | (self.Backlight << SHIFT_BACKLIGHT) | (((data >> 4) & 0x0f) << SHIFT_DATA))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
+        byte = (MASK_RS | (self.Backlight << SHIFT_BACKLIGHT) | ((data & 0x0f) << SHIFT_DATA))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte | MASK_E]))
+        self.I2C.writeto(self.I2CAddress, bytearray([byte]))
+    #
+#
+</code>
+==== Library-Module: Thread.py ====
+<code python>
+import time
+import _thread as THR
 #
-#-----------------------------------------
+# States - EStateThread :
-#   Keyboard4x4
+stIdle = 0
-#-----------------------------------------
+stBusy = 1
-PIN_KEYBOARD_IN0 = 39
+stEnd = 2
-PIN_KEYBOARD_IN1 = 36
-PIN_KEYBOARD_IN2 = 34
-PIN_KEYBOARD_IN3 = 35
-PIN_KEYBOARD_OUT0 = 13
-PIN_KEYBOARD_OUT1 = 12
-PIN_KEYBOARD_OUT2 = 14
-PIN_KEYBOARD_OUT3 = 27
 #
-SIZE_KEYCODEBUFFER = 5
+class CThread():
-TIME_KEYPRESSED = 0.1
+    #
-TIME_KEYREPETITION = 0.5
+    def __init__(self, onstart, onbusy, onabort, onend):
+        self.State = stIdle
+        self.Thread = None
+        self.OnStart = onstart
+        self.OnBusy = onbusy
+        self.OnAbort = onabort
+        self.OnEnd = onend
+        return
+    #
+    def Start(self):
+        self.State = stBusy
+        if (None != self.OnStart):
+            self.OnStart(self)
+        self.ThreadID = THR.start_new_thread(self.CBOnExecute, [self])
+        return
+    #
+    def Abort(self):
+        self.State = stEnd
+        if (None != self.OnAbort):
+            self.OnAbort(self)
+        return
+    #
+    def CBOnExecute(self, thread):
+        if (None != self.OnBusy):
+            self.OnBusy(self)
+        if (None != self.OnEnd):
+            self.OnEnd(self)
+        return
+    #
+#
+#-------------------------------------------------------------
+#    Check Library
+#-------------------------------------------------------------
+def OnStart(thread):
+    return
+def OnBusy(thread):
+    while (stBusy == thread.State):
+        print('.')
+        time.sleep(0.5)
+    return
+def OnAbort(thread):
+    return
+def OnEnd(thread):
+    return
+#
+if ('__main__' == __name__):
+    print('*** Check Thread: begin')
+    #
+    Thread = CThread(OnStart, OnBusy, OnAbort, OnEnd)
+    Thread.Start()
+    time.sleep(5.0)
+    Thread.Abort()
+    #
+    print('*** Check Thread: end')
+#
+</code>
+==== Library-Module: ThreadDisplay.py ====
+<code python>
+#
+import machine
+import time
+#
+import Define as DEF
+import Thread as THR
+import LCDisplayI2C as LCD
+#
+class CCommandDisplay():
+    def __init__(self, lcdisplay):
+        self.LCDisplay = lcdisplay
+        return
+    #
+    def Execute(self):
+        return
+    #
+class CClear(CCommandDisplay):
+    def __init__(self, lcdisplay):
+        super(CClear, self).__init__(lcdisplay)
+        return
+    def Execute(self):
+        self.LCDisplay.Clear()
+        return
+#
+class CWrite(CCommandDisplay):
+    def __init__(self, lcdisplay, row, col, text):
+        super(CWrite, self).__init__(lcdisplay)
+        self.Row = row
+        self.Col = col
+        self.Text = text
+        return
+    def Execute(self):
+        self.LCDisplay.MoveTo(self.Row, self.Col)
+        self.LCDisplay.PutText(self.Text)
+        return
+#
+class CThreadDisplay(THR.CThread):
+    #
+    def __init__(self, i2cdisplay, lcdisplay):
+        super(CThreadDisplay, self).__init__(self.OnStart, self.OnBusy, self.OnAbort, self.OnEnd)
+        self.I2CDisplay = i2cdisplay
+        self.LCDisplay = lcdisplay
+        self.CommandList = []
+        return
+    #---------------------------------------------
+    def OnStart(self, thread):
+        return
+    def OnBusy(self, thread):
+        while (THR.stBusy == thread.State):
+            self.Clear()
+            Col = 0
+            while (Col <= 19):
+                self.Write(0, Col, ' Hello0')
+                self.Write(1, Col, ' Hello1')
+                self.Write(2, Col, ' Hello2')
+                self.Write(3, Col, ' Hello3')
+                while (0 < len(self.CommandList)):
+                    Command = self.CommandList.pop(0)
+                    Command.Execute()
+                time.sleep(0.5)
+                Col += 1
+                if (THR.stBusy != thread.State):
+                    break
+        return
+    def OnAbort(self, thread):
+        return
+    def OnEnd(self, thread):
+        return
+    #---------------------------------------------
+    def Open(self):
+        self.Start()
+        return
+    def Close(self):
+        self.Abort()
+        return
+    #---------------------------------------------
+    def Clear(self):
+        self.CommandList.append(CClear(self.LCDisplay))
+        return
+    def Write(self, row, col, text):
+        self.CommandList.append(CWrite(self.LCDisplay, row, col, text))
+        return
+    #
+#
+#------------------------------------------------------------------------------------------
+if ('__main__' == __name__):
+    print('*** CheckEsp32DisplayKey: begin')
+    #
+    I2CDisplay = machine.SoftI2C(scl=machine.Pin(22), sda=machine.Pin(21), freq=2000000)
+    LCDisplay = LCD.CLCDisplayI2C(I2CDisplay, DEF.I2CADDRESS_LCDISPLAY_T, \
+                                  DEF.LCDISPLAY_COUNT_ROWS, DEF.LCDISPLAY_COUNT_COLUMNS)
+    TD = CThreadDisplay(I2CDisplay, LCDisplay)
+    TD.Open()
+    #
+    time.sleep(10.0)
+    #
+    TD.Close()
+    #
+    print('*** CheckEsp32DisplayKey: end')
+    #
 #
 </code>
@@ Line 481: / Line 782: @@
+==== 211225 : "echte" Parallelisierung ====
+  * {{:module:micropython:Esp32DisplayKey:2112251329_Esp32DisplayKey_01V02.zip | 2112251329_Esp32DisplayKey_01V02.zip}}
 ==== 211224 : Versuch zur Thread-Entkopplung ====