Mercurial > pygpibtoolkit / file comparison
comparison: gpib_plotter_mockup.py
gpib_plotter_mockup.py
- changeset 32
- 59da528bc470
- parent 31
- c869766e25ff
- child 33
- 61809bb871bf
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| 31:c869766e25ff | 32:59da528bc470 |
|---|---|
| 1 import glob | |
| 2 import os | |
| 3 import time | |
| 4 import random | |
| 5 | |
| 6 class GPIBplotter:#(GPIB): | |
| 7 """ | |
| 8 A mockup thet will find in a directory some HPGL files and feed them randomly | |
| 9 """ | |
| 10 def __init__(self, device="/dev/ttyUSB0", baudrate=115200, timeout=0.1, | |
| 11 address=5): | |
| 12 self._timeout = timeout | |
| 13 self.filenames = glob.glob('examples/*.plt') | |
| 14 self._next = random.randint(10,50) | |
| 15 self._num = 0 | |
| 16 | |
| 17 def plotStarted(self): | |
| 18 pass | |
| 19 | |
| 20 def load_plot(self, wait_timeout=0): | |
| 21 if wait_timeout: | |
| 22 time.sleep(wait_timeout) | |
| 23 self._num += 1 | |
| 24 if self._num > self._next: | |
| 25 ret = open(random.choice(self.filenames)).read() | |
| 26 if len(ret)>0: | |
| 27 self.plotStarted() | |
| 28 self._num = 0 | |
| 29 self._next = random.randint(10,100) | |
| 30 time.sleep(random.randint(1,3)) | |
| 31 return ret | |
| 32 return None | |
| 33 return None | |
| 34 | |
| 35 |
