Merge pull request #54 from kso512/master

Add datetime.py script

Author: PaintYourDragon

.gitignore

@@ -0,0 +1,4 @@
+/__pycache__/
+
+# for Snyk
+.dccache

Adafruit_Thermal.py

@@ -50,7 +50,7 @@ class Adafruit_Thermal(Serial):
 	lineSpacing     =     8
 	barcodeHeight   =    50
 	printMode       =     0
-	defaultHeatTime =   120
+	defaultHeatTime =   180
 	firmwareVersion =   268
 	writeToStdout   = False
 

README.md

@@ -8,23 +8,23 @@ Install Raspbian Buster and Wire the printer according to [this](https://learn.a
 
 Run a test to see if the printer is working by punching in these commands into the terminal.
 
-```
+``` shell
 stty -F /dev/serial0 19200
 echo -e "This is a test.\\n\\n\\n" > /dev/serial0
 ```
 
 ### Installing
 
-Update the system and install prequisities.
+Update the system and install prerequisites.
 
-```
+``` shell
 sudo apt-get update
 sudo apt-get install git cups wiringpi build-essential libcups2-dev libcupsimage2-dev python3-serial python-pil python-unidecode
 ```
 
 Install the printer driver. Don't worry about the warnings that g++ gives.
 
-```
+``` shell
 git clone https://github.com/adafruit/zj-58
 cd zj-58
 make
@@ -33,14 +33,14 @@ sudo ./install
 
 Make the printer the default printer. This is useful if you are going to be doing other things with it.
 
-```
+``` shell
 sudo lpadmin -p ZJ-58 -E -v serial:/dev/serial0?baud=19200 -m zjiang/ZJ-58.ppd
 sudo lpoptions -d ZJ-58
 ```
 
 Restart the system. Clone this repository and try to run *printertest.py*.
 
-```
+``` shell
 git clone https://github.com/galacticfan/Python-Thermal-Printer/
 cd Python-Thermal-Printer
 python3 printertest.py

__pycache__/Adafruit_Thermal.cpython-37.pyc

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+
+# Python3 script to print the current date and time, using
+#   the Adafruit_Thermal library, in ISO 8601 format.
+# https://www.iso.org/iso-8601-date-and-time-format.html
+
+import time
+from Adafruit_Thermal import *
+
+# Lines of margin (integer)
+i_feed = 3
+# Seconds to pause (float)
+f_pause = 1.0
+
+# Define the printer port, speed, and timeout
+printer = Adafruit_Thermal("/dev/ttyS0", 19200, timeout=5)
+
+# Build the date stamp in the format YYYY-MM-DD ex: "2021-12-25"
+datestamp = time.strftime("%Y-%m-%d", time.gmtime())
+print ("Date in preferred format:", datestamp)
+
+# Build the time stamp in the format Thh:mm:ssZ ex: "T23:59:59Z"
+timestamp = 'T' + time.strftime("%H:%M:%S", time.gmtime()) + 'Z'
+print ("Time in preferred format:", timestamp)
+
+# Tell printer to sleep
+printer.sleep()
+# Sleep for the defined time in case we're called many times in a row
+time.sleep(f_pause)
+# Call wake() before printing again, even if reset
+printer.wake()
+# Restore printer to defaults
+printer.setDefault()
+
+# Give a little room at the top
+printer.feed(i_feed)
+# Center justify
+printer.justify('C')
+# Large size
+printer.setSize('L')
+# Print the date
+printer.println(datestamp)
+# Print the time
+printer.println(timestamp)
+# Give a little room at the bottom
+printer.feed(i_feed)