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--- the_software_build_and_test [2017/01/22 16:56] – walkeradmin
+++ the_software_build_and_test [2023/03/09 22:35] (current) – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
 \\
 \\
-<file>
+----
+\\
+This code originated from the following website (although I am pretty sure that is not the original source)
+\\
+\\
+[[http://raspi.tv/2015/how-to-drive-a-7-segment-display-directly-on-raspberry-pi-in-python]]
+\\
+\\
+This code was then modified by myself and a couple of friends (thanks to Malc and Chewie) to account for a couple of changes, and these are:
+\\
+\\
+  - My 7 Segment LED is Common Anode, the original code is for common cathode.
+  - My 7 Segment LED has a time separator and full stops (so is 8 segments) the original does not.
+  - I used different GPIO lines.
+----
+==== Working Clock Code ====
+\\
+This is the final version of code that was used. It has the support for the flashing dots time separator. If cutting and pasting isn't working well for you, download the python file {{ :7segmentledclock_v1.0.zip |Here}}.
+<sxh [py][; options for SyntaxHighlighter]>
+#! /usr/bin/python
+# Python Script to run a 7 Segment Common Anode LED as a clock.
+# Version 1.0
 import RPi.GPIO as GPIO
 import time
+#Define numbering system for the IO pins Raspberry Pi
 GPIO.setmode(GPIO.BCM)
-# GPIO pins used to display 7 segments
+# Define GPIO ports for the 7seg
 gpioSegments =  (5,6,13,19,26,21,20,16)
+# 7seg_segment_pins (11,7,4,2,1,10,5,3) +  100R inline
-for segment in gpioSegments:
+# Setup channels for output and set initial values
-    GPIO.setup(segment, GPIO.OUT)
+for segment in (gpioSegments):
-    GPIO.output(segment, 1)
+  GPIO.setup(segment,GPIO.OUT)
+  GPIO.output(segment,GPIO.HIGH)
-# GPIO pins used to select digit 0-3
+# Define GPIO ports for the digits 0-3
 gpioDigits = (18,23,24,25)
+# Pins (12,9,8,6) select digits 0-3 respectively reading LTR on display
-for digit in gpioDigits:
+# Setup channels for output and set initial values
-    GPIO.setup(digit, GPIO.OUT)
+for digit in (gpioDigits):
-    GPIO.output(digit, 0)
+  GPIO.setup(digit,GPIO.OUT)
+  GPIO.output(digit,GPIO.LOW)
-dotted=False
-numbers = {'0':(0,0,1,0,1,0,0,0),
+#Define flags for comtrol of Colon separator on display
+colon_visible=True
+colon_counter=0
+#Define segment arrays for each number to be displayed
+numbers = {
+	'0':(0,0,1,0,1,0,0,0),
     '1':(1,1,1,0,1,0,1,1),
     '2':(0,0,1,1,0,0,1,0),
@@ Line 37: / Line 68: @@
     '9':(1,0,1,0,0,0,0,0),
     ' ':(0,0,0,0,0,0,0,0)}
+#Cycle through each digit and its segments
 try:
     while True:
-        n = time.ctime()[11:13]+time.ctime()[14:16]
+        time_string = str(time.ctime()[11:13]+time.ctime()[14:16]).rjust(4)
-        s = str(n).rjust(4)
         for digit in range(4):
-            for loop in range(0,8):
+#select digit to display
-                GPIO.output(gpioSegments[loop], numbers[s[digit]][loop])
-                #if (int(time.ctime()[18:19])%2 == 0) and (digit == 2):
-                #    GPIO.output(23, 0)
-                #else:
-                #    GPIO.output(23, 1)
             GPIO.output(gpioDigits[digit], 1)
+#set required segments on
+            for segment in range(0,8):
+                GPIO.output(gpioSegments[segment], numbers[time_string[digit]][segment])
+#check to see if we are on segment 3 of digit 2(LTR)
+                if ((digit==1) and (segment==2)):
+#when colon counter gets to set value flip colon display mode between TRUE (visible) and False (NOT.visible)
+					if (colon_counter<=50):
+#count value not reached turn colon ON or OFF based on current setting of colon_visible
+						if colon_visible==True:
+							GPIO.output(13, 0)
+						else:
+							GPIO.output(13, 1)
+#colon counter set value reached so flip colon display mode and reset colon counter
+					else:
+						colon_counter = 0
+						colon_visible =  not colon_visible
+#display all selected segments for a short time
             time.sleep(0.005)
-            GPIO.output(gpioDigits[digit], 0)
+#turn-off All segments
+            for segment in range(0,8):
+                GPIO.output(gpioSegments[segment],GPIO.HIGH)
+#turn-off current digit selector pin
+            GPIO.output(gpioDigits[digit], GPIO.LOW)
+#advance colon counter
+        colon_counter=colon_counter+1
+finally:
+  GPIO.cleanup()
+</sxh>
+\\
+\\
+----
+\\
+==== Here is the original code, unedited ====
+<sxh [py][; options for SyntaxHighlighter]>
+# code modified, tweaked and tailored from code by bertwert
+# on RPi forum thread topic 91796
+import RPi.GPIO as GPIO
+import time
+GPIO.setmode(GPIO.BCM)
+# GPIO ports for the 7seg pins
+segments =  (11,4,23,8,7,10,18,25)
+# 7seg_segment_pins (11,7,4,2,1,10,5,3) +  100R inline
+for segment in segments:
+    GPIO.setup(segment, GPIO.OUT)
+    GPIO.output(segment, 0)
+# GPIO ports for the digit 0-3 pins
+digits = (22,27,17,24)
+# 7seg_digit_pins (12,9,8,6) digits 0-3 respectively
+for digit in digits:
+    GPIO.setup(digit, GPIO.OUT)
+    GPIO.output(digit, 1)
+num = {' ':(0,0,0,0,0,0,0),
+    '0':(1,1,1,1,1,1,0),
+    '1':(0,1,1,0,0,0,0),
+    '2':(1,1,0,1,1,0,1),
+    '3':(1,1,1,1,0,0,1),
+    '4':(0,1,1,0,0,1,1),
+    '5':(1,0,1,1,0,1,1),
+    '6':(1,0,1,1,1,1,1),
+    '7':(1,1,1,0,0,0,0),
+    '8':(1,1,1,1,1,1,1),
+    '9':(1,1,1,1,0,1,1)}
+try:
+    while True:
+        n = time.ctime()[11:13]+time.ctime()[14:16]
+        s = str(n).rjust(4)
+        for digit in range(4):
+            for loop in range(0,7):
+                GPIO.output(segments[loop], num[s[digit]][loop])
+                if (int(time.ctime()[18:19])%2 == 0) and (digit == 1):
+                    GPIO.output(25, 1)
+                else:
+                    GPIO.output(25, 0)
+            GPIO.output(digits[digit], 0)
+            time.sleep(0.001)
+            GPIO.output(digits[digit], 1)
 finally:
     GPIO.cleanup()
-</file>
+</sxh>