Hi,
I am trying to build a custom control panel that talks to HAL through a
serial interface using pyserial. I have a Python program that runs fine from
a HAL prompt (i.e. with halrun). It loads and reports its pins as expected.
However, if I try to add it to the custom_postgui.hal, so that it loads with
Axis, EMC will not start properly. I get the EMC loading screen, the Axis
toolchanger dialog, then both disappear and nothing happens. After I do
halrun -U, I get the EMC error window with the message, "Waiting for
component '/usr/bin/test' to become ready......" with a lot of periods.
I've been stripping away pieces of my code to see if I could isolate a
problem with no luck. Eventually I just used this example from the tutorial
on the website, and it produces exactly the same result as my code.
#!/usr/bin/python
import hal, time
h = hal.component("passthrough")
h.newpin("in", hal.HAL_FLOAT, hal.HAL_IN)
h.newpin("out", hal.HAL_FLOAT, hal.HAL_OUT)
h.ready()
try:
while 1:
time.sleep(1)
h['out'] = h['in']
except KeyboardInterrupt:
raise SystemExit
>From http://www.linuxcnc.org/docview/html//hal_halmodule.html
I can post the full dump from EMC if it would help but my guess is I'm
missing something more fundamental here. Thanks in advance!
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