tempo-plotter Changeset - acee6b77993c · protofusion repositories

Changeset - acee6b77993c

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Hasan Yavuz ÖZDERYA - 10 years ago 2015-05-20 05:13:24
hy@ozderya.net

added sine wave producing test function to pseudo device

1 file changed with 15 insertions and 2 deletions:

misc/pseudo_device.py

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misc/pseudo_device.py

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@@ @@ -24,7 +24,7 @@ @@
 # along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+#
 import os, pty, time, struct
+import os, pty, time, struct, math
 def ascii_test(port):
     """Put ASCII test data through pseudo terminal."""
@@ @@ -48,6 +48,19 @@ def float_test(port): @@
         import binascii
         time.sleep(0.1)
 def float_sine(port):
     """Puts 2 channel sine and cosine wafeform through pseudo terminal
     continuously."""
     i = 0
     period = 200
     while True:
         sin = math.sin(2 * math.pi * i / period)
         # cos = math.sin(2 * math.pi * (i / period + 1 / 4))
         data = struct.pack('ff', sin, -sin)
         os.write(port, data)
         i = (i + 1) % period
         time.sleep(0.1)
 def run():
     # create the pseudo terminal
     master, slave = pty.openpty()
@@ @@ -57,7 +70,7 @@ def run(): @@
     print("Master terminal: {}\nSlave terminal: {}".format(master_name, slave_name))
     try:
-        float_test(master)
+        float_sine(master)
     finally:
         # close the pseudo terminal files
         os.close(master)

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