Thanks Don for your suggestions.
I have tried playing with the delays by various means:
- relative delays: waiting after (what I believe to be) late services like :
After=syslog.target network.target
- absolute delays:
ExecStartPre=/bin/sleep 60
TimeoutSec=100s
- insering delays directly inside the C code.
None of those 3 tentatives made improvement. Like if the timing wasn't the
problem...
Could it be some access grant problem at the time the service is allocated
(and not when it starts) ?
Note the C code to access device tree is as follow:
fd_len = snprintf(buf, sizeof(buf), "%s/period",
"/sys/devices/ocp.3/pwm_test_P9_14.16");
fd = open(buf, O_WRONLY);
if (fd < 0) {
perror("pwm/period");
printf("pwm/period, %s", buf);
return fd;
}
Le lundi 28 juillet 2014 22:45:31 UTC+2, don a écrit :
>
> On 07/28/2014 01:06 PM, BubbleBone wrote:
>
> Actually all the details were given in the first message.
> I even had the impression that I put too much of details and made it
> unreadable ... which may explain why I didn't get any answer :-)
>
> Let me know if you need any detail which is not in the initial message.
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>
> Find out the proper service to make it start after using
>
> After=
>
> for example (will not solve yours)
>
> After=systemd-user-sessions.service
>
> There is a bunch of things for much further control I would recommend
> further reading of systemd service files.
>
> For example you have no Type
>
> You have things like Wants= Requires=
>
> Things like Requires= does not imply After=
>
>
>
>
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