On Thu, 24 Oct 2019, Gene Heskett wrote:
Date: Thu, 24 Oct 2019 21:44:36 -0400
From: Gene Heskett <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: "Enhanced Machine Controller (EMC)" <[email protected]>
Subject: [Emc-users] hal syntax maybe?
Greetings all;
I have added two pwmgen's to the config strings of my 6040's 5i25 config
strings, and they show up in the dmesg as
hm2/hm2_5i25.0: IO Pin 008 (P3-05): PWMGen #0, pin Out1 (Dir or Down)
(Output)
hm2/hm2_5i25.0: IO Pin 009 (P3-06): PWMGen #0, pin Out0 (PWM or Up)
(Output)
These two above with a straight thru cable would show up on the 7i76D as
dir4 and step4, which would be pretty handy using step4 to drive an
IRF520 based motor switch.
hm2/hm2_5i25.0: IO Pin 025 (P2-05): PWMGen #1, pin Out1 (Dir or Down)
(Output
hm2/hm2_5i25.0: IO Pin 026 (P2-06): PWMGen #1, pin Out0 (PWM or Up)
(Output)
And they now show in a halconfig as:
12 bit IN FALSE hm2_5i25.0.pwmgen.00.enable
12 float IN 0 hm2_5i25.0.pwmgen.00.value
12 bit IN FALSE hm2_5i25.0.pwmgen.01.enable
12 float IN 0 hm2_5i25.0.pwmgen.01.value
which surprises me as there is not any associated addf's. And any attempt
to add them is an error Can I assume they are ready to rock and roll?
The PWM is a hardware device, not a component so no addf is needed
Now I see its default type=1, when I would rather its zero and not
wasting a pin. where do I set that??
Its a parameter (listed in the hostmot2 man page), but the PWM gen will always
use the dir pin unless the firmware is changed
So I arrive at setting the first pwmgen.00.enable=true, its frequency to
10 hz, and its input value to .5, scale is default at 1.0
But now I can't find an output to watch with the halscope to see if its
running.
You can by finding the GPIO pin associated with the PWM output
Am I supposed to be able to?
Thanks.
Cheers, Gene Heskett
--
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Genes Web page <http://geneslinuxbox.net:6309/gene>
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