From a0d9f5edae60e9aa6bcbfda94a0d35bb72b81521 Mon Sep 17 00:00:00 2001
From: Trygve <trygve@posteo.net>
Date: Sat, 9 Apr 2022 23:51:47 +0200
Subject: [PATCH] La til live mtr simulator.

---
 utilities/create_virt_serial.sh |  3 ++
 utilities/mtr_sim.py            | 76 +++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+)
 create mode 100644 utilities/create_virt_serial.sh
 create mode 100644 utilities/mtr_sim.py

diff --git a/utilities/create_virt_serial.sh b/utilities/create_virt_serial.sh
new file mode 100644
index 0000000..89d181f
--- /dev/null
+++ b/utilities/create_virt_serial.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+socat -d -d pty,rawer,b9600 pty,rawer,b9600
diff --git a/utilities/mtr_sim.py b/utilities/mtr_sim.py
new file mode 100644
index 0000000..a143de9
--- /dev/null
+++ b/utilities/mtr_sim.py
@@ -0,0 +1,76 @@
+import argparse
+import serial
+import otime
+from rich import inspect
+def main():
+    global package_n
+    package_n = 0
+    argparser = argparse.ArgumentParser(
+        description=("Acts as a live mtr reading data line by line from a log file and sending them over serial"))
+    argparser.add_argument('port', help='Serial port identifier')
+    argparser.add_argument(
+            '-f', '--file',
+            help=(
+                "Mtr log file to use"))
+    argparser.add_argument(
+            '-v', '--verbose', action='store_true', help='Verbose output')
+    args = argparser.parse_args()
+
+    port = serial.Serial(port=args.port, baudrate=9600)
+    event = otime.event(0, 'NoName')
+    event.import_mtr_file(args.file)
+
+    for card in event.card_punches:
+        input('Press enter to send next card')
+        if args.verbose == True:
+            inspect(card)
+        data = card_to_bytes(card)
+        port.write(data)
+
+def card_to_bytes(card):
+    global package_n
+    package_n += 1
+    msg = b'\xFF\xFF\xFF\xFF\xE6\x4D\x9C\x3E'
+    year = int(str(card.read_time.year)[2:4])
+    month = card.read_time.month
+    day = card.read_time.day
+    hour = card.read_time.hour
+    minute = card.read_time.minute
+    second = card.read_time.second
+    msg += year.to_bytes(1, byteorder='little')
+    msg += month.to_bytes(1, byteorder='little')
+    msg += day.to_bytes(1, byteorder='little')
+    msg += hour.to_bytes(1, byteorder='little')
+    msg += minute.to_bytes(1, byteorder='little')
+    msg += second.to_bytes(1, byteorder='little')
+    #ms
+    msg += b'\x00\x00'
+
+    msg += package_n.to_bytes(4, byteorder='little')
+    msg += card.card.to_bytes(3, byteorder='little')
+
+    # Gidder ikke å finne ut hva Producweek Producyear er
+    msg += b'\x00\x00'
+
+    # Hopper overogså over ECardHeadSum
+    msg += b'\x00'
+
+    for n in range(50):
+        try:
+            control = card.controls[n]
+            split = card.splits[n]
+        except:
+            control = 0
+            split = 0
+        msg += control.to_bytes(1, byteorder='little')
+        msg += split.to_bytes(2, byteorder='little')
+    # 56 byte string
+    msg += int(0).to_bytes(56, byteorder='little')
+    # Checksum
+    csum = sum(msg) % 256
+    msg += csum.to_bytes(1, byteorder='little')
+    msg += b'\x00'
+    return msg
+
+if __name__ == '__main__':
+    main()