TM1637 LED Display ansteuern - Only 4 PIN Red Common Anode 4-Segment Digital Tube Display For Arduino Raspberry: Unterschied zwischen den Versionen

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<div class="mw-collapsible mw-collapsed" data-expandtext="47digitclock.py" data-collapsetext="zuklapppen">
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<div class="mw-collapsible mw-collapsed" data-expandtext="tm1637.py" data-collapsetext="zuklapppen">
 
<pre>
 
<pre>
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#!/usr/bin/env python
 
−
# -*- coding: utf-8 -*-
 
  
 
# https://raspberrytips.nl/tm1637-4-digit-led-display-raspberry-pi/
 
# https://raspberrytips.nl/tm1637-4-digit-led-display-raspberry-pi/
  
 
import sys
 
import sys
 +
import os
 
import time
 
import time
−
import datetime
+
import RPi.GPIO as IO
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import RPi.GPIO as GPIO
+
−
import tm1637
+
  
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#CLK -> GPIO20 (Pin 38)
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IO.setwarnings(False)
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#DI0 -> GPIO21 (Pin 40)
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IO.setmode(IO.BCM)
  
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Display = tm1637.TM1637(20,21,tm1637.BRIGHT_TYPICAL)
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HexDigits = [0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71]
  
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Display.Clear()
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ADDR_AUTO = 0x40
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Display.SetBrightnes(1)
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ADDR_FIXED = 0x44
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STARTADDR = 0xC0
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BRIGHT_DARKEST = 0
 +
BRIGHT_TYPICAL = 2
 +
BRIGHT_HIGHEST = 7
 +
OUTPUT = IO.OUT
 +
INPUT = IO.IN
 +
LOW = IO.LOW
 +
HIGH = IO.HIGH
  
−
while(True):
+
class TM1637:
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  now = datetime.datetime.now()
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__doublePoint = False
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  hour = now.hour
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__Clkpin = 0
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  minute = now.minute
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__Datapin = 0
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  second = now.second
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__brightnes = BRIGHT_TYPICAL;
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  currenttime = [ int(hour / 10), hour % 10, int(minute / 10), minute % 10 ]
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__currentData = [0,0,0,0];
  
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  Display.Show(currenttime)
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def __init__( self, pinClock, pinData, brightnes ):
−
  Display.ShowDoublepoint(second % 2)
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self.__Clkpin = pinClock
 +
self.__Datapin = pinData
 +
self.__brightnes = brightnes;
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IO.setup(self.__Clkpin,OUTPUT)
 +
IO.setup(self.__Datapin,OUTPUT)
 +
# end  __init__
  
−
  time.sleep(1)
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def Clear(self):
 +
b = self.__brightnes;
 +
point = self.__doublePoint;
 +
self.__brightnes = 0;
 +
self.__doublePoint = False;
 +
data = [0x7F,0x7F,0x7F,0x7F];
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self.Show(data);
 +
self.__brightnes = b; # restore saved brightnes
 +
self.__doublePoint = point;
 +
# end  Clear
  
 +
def ShowInt(self, i):
 +
s = str(i)
 +
self.Clear()
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for i in range(0,len(s)):
 +
self.Show1(i, int(s[i]))
 +
 +
def Show( self, data ):
 +
for i in range(0,4):
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self.__currentData[i] = data[i];
 +
 +
self.start();
 +
self.writeByte(ADDR_AUTO);
 +
self.stop();
 +
self.start();
 +
self.writeByte(STARTADDR);
 +
for i in range(0,4):
 +
self.writeByte(self.coding(data[i]));
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self.stop();
 +
self.start();
 +
self.writeByte(0x88 + self.__brightnes);
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self.stop();
 +
# end  Show
 +
 +
def SetBrightnes(self, brightnes): # brightnes 0...7
 +
if( brightnes > 7 ):
 +
brightnes = 7;
 +
elif( brightnes < 0 ):
 +
brightnes = 0;
 +
 +
if( self.__brightnes != brightnes):
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self.__brightnes = brightnes;
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self.Show(self.__currentData);
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# end if
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# end  SetBrightnes
 +
 +
def ShowDoublepoint(self, on): # shows or hides the doublepoint
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if( self.__doublePoint != on):
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self.__doublePoint = on;
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self.Show(self.__currentData);
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# end if
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# end  ShowDoublepoint
 +
 +
def writeByte( self, data ):
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for i in range(0,8):
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IO.output( self.__Clkpin, LOW)
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if(data & 0x01):
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IO.output( self.__Datapin, HIGH)
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else:
 +
IO.output( self.__Datapin, LOW)
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data = data >> 1
 +
IO.output( self.__Clkpin, HIGH)
 +
#endfor
 +
 +
# wait for ACK
 +
IO.output( self.__Clkpin, LOW)
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IO.output( self.__Datapin, HIGH)
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IO.output( self.__Clkpin, HIGH)
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IO.setup(self.__Datapin, INPUT)
 +
 +
while(IO.input(self.__Datapin)):
 +
time.sleep(0.001)
 +
if( IO.input(self.__Datapin)):
 +
IO.setup(self.__Datapin, OUTPUT)
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IO.output( self.__Datapin, LOW)
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IO.setup(self.__Datapin, INPUT)
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#endif
 +
# endwhile
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IO.setup(self.__Datapin, OUTPUT)
 +
# end writeByte
 +
 +
def start(self):
 +
IO.output( self.__Clkpin, HIGH) # send start signal to TM1637
 +
IO.output( self.__Datapin, HIGH)
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IO.output( self.__Datapin, LOW)
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IO.output( self.__Clkpin, LOW)
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# end start
 +
 +
def stop(self):
 +
IO.output( self.__Clkpin, LOW)
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IO.output( self.__Datapin, LOW)
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IO.output( self.__Clkpin, HIGH)
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IO.output( self.__Datapin, HIGH)
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# end stop
 +
 +
def coding(self, data):
 +
if( self.__doublePoint ):
 +
pointData = 0x80
 +
else:
 +
pointData = 0;
 +
 +
if(data == 0x7F):
 +
data = 0
 +
else:
 +
data = HexDigits[data] + pointData;
 +
return data
 +
# end coding
 +
 +
# end class TM1637
 
</pre>
 
</pre>
 
</div>
 
</div>

Version vom 28. Januar 2018, 12:01 Uhr

Anschlußschema am BananaPiPro

Raspberry-Pi-GPIO-Layout-190x600.png

TM1637 Board Pin Funktion    RPi PIN RPi Funktion
GND Ground 39 GND
VCC +3,3V Power 1 3,3V
DIO Data In 38 GPIO 20
CLK Clock 40 GPIO 21
  • Python Scripte:
    • downloaden: 
wget https://raspberrytips.nl/files/tm1637.py
wget https://raspberrytips.nl/files/47digitclock.py
  • 4747digitclock.py für obige Schaltung anpassen:
  • GPIO 23 auf GPIO 20 (RPi-Pin 16 auf 38)
  • GPIO 24 auf GPIO 21 (RPi-Pin 18 auf 40) 
#!/usr/bin/env python
# -*- coding: utf-8 -*-

# https://raspberrytips.nl/tm1637-4-digit-led-display-raspberry-pi/

import sys
import time
import datetime
import RPi.GPIO as GPIO
import tm1637

#CLK -> GPIO20 (Pin 38)
#DI0 -> GPIO21 (Pin 40)

Display = tm1637.TM1637(20,21,tm1637.BRIGHT_TYPICAL)

Display.Clear()
Display.SetBrightnes(1)

while(True):
   now = datetime.datetime.now()
   hour = now.hour
   minute = now.minute
   second = now.second
   currenttime = [ int(hour / 10), hour % 10, int(minute / 10), minute % 10 ]

   Display.Show(currenttime)
   Display.ShowDoublepoint(second % 2)

   time.sleep(1)
  • ausführbar machen: 
chmod +x *.py
  • automatsich beim Booten starten: 
sudo crontab -e
  • Zeile einfügen: 
@reboot /root/47digitclock.py &




# https://raspberrytips.nl/tm1637-4-digit-led-display-raspberry-pi/

import sys
import os
import time
import RPi.GPIO as IO

IO.setwarnings(False)
IO.setmode(IO.BCM)

HexDigits = [0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71]

ADDR_AUTO = 0x40
ADDR_FIXED = 0x44
STARTADDR = 0xC0
BRIGHT_DARKEST = 0
BRIGHT_TYPICAL = 2
BRIGHT_HIGHEST = 7
OUTPUT = IO.OUT
INPUT = IO.IN
LOW = IO.LOW
HIGH = IO.HIGH

class TM1637:
	__doublePoint = False
	__Clkpin = 0
	__Datapin = 0
	__brightnes = BRIGHT_TYPICAL;
	__currentData = [0,0,0,0];

	def __init__( self, pinClock, pinData, brightnes ):
		self.__Clkpin = pinClock
		self.__Datapin = pinData
		self.__brightnes = brightnes;
		IO.setup(self.__Clkpin,OUTPUT)
		IO.setup(self.__Datapin,OUTPUT)
	# end  __init__

	def Clear(self):
		b = self.__brightnes;
		point = self.__doublePoint;
		self.__brightnes = 0;
		self.__doublePoint = False;
		data = [0x7F,0x7F,0x7F,0x7F];
		self.Show(data);
		self.__brightnes = b;				# restore saved brightnes
		self.__doublePoint = point;
	# end  Clear

	def ShowInt(self, i):
		s = str(i)
		self.Clear()
		for i in range(0,len(s)):
			self.Show1(i, int(s[i]))

	def Show( self, data ):
		for i in range(0,4):
			self.__currentData[i] = data[i];

		self.start();
		self.writeByte(ADDR_AUTO);
		self.stop();
		self.start();
		self.writeByte(STARTADDR);
		for i in range(0,4):
			self.writeByte(self.coding(data[i]));
		self.stop();
		self.start();
		self.writeByte(0x88 + self.__brightnes);
		self.stop();
	# end  Show

	def SetBrightnes(self, brightnes):		# brightnes 0...7
		if( brightnes > 7 ):
			brightnes = 7;
		elif( brightnes < 0 ):
			brightnes = 0;

		if( self.__brightnes != brightnes):
			self.__brightnes = brightnes;
			self.Show(self.__currentData);
		# end if
	# end  SetBrightnes

	def ShowDoublepoint(self, on):			# shows or hides the doublepoint
		if( self.__doublePoint != on):
			self.__doublePoint = on;
			self.Show(self.__currentData);
		# end if
	# end  ShowDoublepoint

	def writeByte( self, data ):
		for i in range(0,8):
			IO.output( self.__Clkpin, LOW)
			if(data & 0x01):
				IO.output( self.__Datapin, HIGH)
			else:
				IO.output( self.__Datapin, LOW)
			data = data >> 1
			IO.output( self.__Clkpin, HIGH)
		#endfor

		# wait for ACK
		IO.output( self.__Clkpin, LOW)
		IO.output( self.__Datapin, HIGH)
		IO.output( self.__Clkpin, HIGH)
		IO.setup(self.__Datapin, INPUT)

		while(IO.input(self.__Datapin)):
			time.sleep(0.001)
			if( IO.input(self.__Datapin)):
				IO.setup(self.__Datapin, OUTPUT)
				IO.output( self.__Datapin, LOW)
				IO.setup(self.__Datapin, INPUT)
			#endif
		# endwhile
		IO.setup(self.__Datapin, OUTPUT)
	# end writeByte

	def start(self):
		IO.output( self.__Clkpin, HIGH) # send start signal to TM1637
		IO.output( self.__Datapin, HIGH)
		IO.output( self.__Datapin, LOW)
		IO.output( self.__Clkpin, LOW)
	# end start

	def stop(self):
		IO.output( self.__Clkpin, LOW)
		IO.output( self.__Datapin, LOW)
		IO.output( self.__Clkpin, HIGH)
		IO.output( self.__Datapin, HIGH)
	# end stop

	def coding(self, data):
		if( self.__doublePoint ):
			pointData = 0x80
		else:
			pointData = 0;

		if(data == 0x7F):
			data = 0
		else:
			data = HexDigits[data] + pointData;
		return data
	# end coding

# end class TM1637

Quelle: Quelle 2:

Von „https://www.electronic-man.randschtoischlotzer.de/index.php?title=TM1637_LED_Display_ansteuern_-_Only_4_PIN_Red_Common_Anode_4-Segment_Digital_Tube_Display_For_Arduino_Raspberry&oldid=2060“