What HAL function to use.

aike wrote:

But what need I use to call the impulse once in hour?.

I haven't tried it, but I think you should be able to use "timedelay" if you hook it back in to itself with a "not"

loadrt timedelay count=1
loadrt not count=1

addf timedelay.0 servo-thread
addf not.0 servo-thread

setp timedelay.0 on-delay 3540
setp timedelay.0 off-delay 60

net lube-not timedelay.0.out not.0.in
net lube not.0.out => timedelay.0.in parport.0.pin-X-out

This sets up timedelay to be on for nearly an hour and off for a minute. The output is inverted, and fed back to the input and also to the lube pump pin.
(I use the inverted output for the pump so that when the function starts up "off" it initially turns the pump "on")

I think you could also use a stepgen function in velocity mode, or one pin of a sim_encoder, or a function generator (but that would need type-converting from float to bit)