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swig/python: Removed test_comedi.py

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It was untested, and never worked.  It would be better to replace it
with some small demo programs, similar to the C language demo programs.
This commit is contained in:
Ian Abbott 2017-04-10 14:14:29 +01:00
parent 6a73a96cbf
commit 99958da64f
2 changed files with 1 additions and 81 deletions
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2
swig/python/Makefile.am
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@ -14,7 +14,7 @@ _comedi_la_LDFLAGS = -module -avoid-version $(COMEDILIB_LIBS)
pyexec_SCRIPTS = comedi.py
EXTRA_DIST = README.txt comedi_python.i setup.py test_comedi.py
EXTRA_DIST = README.txt comedi_python.i setup.py
comedi_python_wrap.c comedi.py: $(srcdir)/comedi_python.i $(srcdir)/../comedi.i
$(SWIG) -python -o comedi_python_wrap.c -I$(top_srcdir)/include -I$(srcdir)/.. $(srcdir)/comedi_python.i

80
swig/python/test_comedi.py
View file

@ -1,80 +0,0 @@
#A test-application to demonstrate using the Comedilib API
# and streaming acquisition in particular, from Python.
#This script is completely untested!
# author bryan.cole@teraview.co.uk
#set the paths so python can find the comedi module
import sys, os, string
sys.path.append('./build/lib.linux-i686-2.2')
import comedi as c
#open a comedi device
dev=c.comedi_open('/dev/comedi0')
if not dev: raise "Error openning Comedi device"
#get a file-descriptor for use later
fd = c.comedi_fileno(dev)
nscans=1000 #specify total number of scans
#three lists containing the chans, gains and referencing
#the lists must all have the same length
chans=[0,2,3]
gains=[1,1,1]
aref =[c.AREF_GROUND, c.AREF_GROUND, c.AREF_GROUND]
nchans = len(chans) #number of channels
#wrappers include a "chanlist" object (just an Unsigned Int array) for holding the chanlist information
mylist = c.chanlist(nchans) #create a chanlist of length nchans
#now pack the channel, gain and reference information into the chanlist object
#N.B. the CR_PACK and other comedi macros are now python functions
for index in range(nchans):
mylist[index]=c.cr_pack(chans[index], gains[index], aref[index])
#construct a comedi command manually
cmd = c.comedi_cmd_struct()
cmd.subdev = 0
cmd.flags = 0
cmd.start_src = c.TRIG_NOW
cmd.sart_arg = 0
cmd.scan_begin_src = c.TRIG_TIMER
cmd.scan_begin_arg = int(1.0e9/100000)
cmd.convert_src = c.TRIG_TIMER
cmd.convert_arg = 1
cmd.scan_end_src = c.TRIG_COUNT
cmd.scan_end_arg = nchans
cmd.stop_src = c.TRIG_COUNT
cmd.stop_arg = nscans
cmd.chanlist = mylist
cmd.chanlist_len = nchans
#test our comedi command a few times.
ret = c.comedi_command_test(dev,cmd)
print "first cmd test returns ", ret
ret = c.comedi_command_test(dev,cmd)
print "second test returns ", ret
ret = c.comedi_command_test(dev,cmd)
if not ret: raise "Error testing comedi command"
#execute the command!
ret = c.comedi_command(dev,cmd)
#I think this will work but it's completely untested!
datalist=[]
data=os.read(fd)
while len(data)>0:
datalist.append(data)
data=os.read(fd)
ret = c.comedi_close(dev)
datastr = string.join(datalist,'')
print datastr #heres your data, as a single string!
#if you've got Numeric installed you can convert data into a flat Numpy array
# with:
# dataarray = Numeric.fromstring(data, Int16)