# HG changeset patch
# User Hasan Yavuz ÖZDERYA <hy@ozderya.net>
# Date 2015-05-10 11:19:57
# Node ID 4a8b4a813d3ab0b620e05bf714a2f73c1d358be9
# Parent  4e79305fcf9bd37a4255ce90e0faa910f7b60f23

added pseudo terminal script for ascii data testing

diff --git a/misc/pseudo_device.py b/misc/pseudo_device.py
new file mode 100755
--- /dev/null
+++ b/misc/pseudo_device.py
@@ -0,0 +1,58 @@
+#!/usr/bin/python3
+#
+# This script will create a pseudo terminal, and send dummy data over
+# it for testing purposes. Note that pseuodo terminal is a unix thing,
+# this script will not work on Windows.
+#
+# Currently this script only outputs ASCII(comma separated) data.
+#
+# Copyright © 2015 Hasan Yavuz Özderya
+#
+# This file is part of serialplot.
+#
+# serialplot is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# serialplot is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os, pty, time
+
+def ascii_test(port):
+    """Put ASCII test data through pseudo terminal."""
+    print("\n")
+    nc = 4 # number of channels
+    for i in range(0, 1000):
+        data = []
+        for ci in range(0, nc):
+            data.append(i*(ci+1))
+        data = ",".join([str(num) for num in data])
+        print("<< " + data, end="\r")
+        os.write(port, bytes(data + "\r\n", 'ASCII'))
+        time.sleep(0.1)
+
+def run():
+    # create the pseudo terminal
+    master, slave = pty.openpty()
+
+    master_name = os.ttyname(master)
+    slave_name = os.ttyname(slave)
+    print("Master terminal: {}\nSlave terminal: {}".format(master_name, slave_name))
+
+    try:
+        ascii_test(master)
+    finally:
+        # close the pseudo terminal files
+        os.close(master)
+        os.close(slave)
+
+if __name__=="__main__":
+    run()