7c80 install on rpi 4

Hi,
I think its appropriate to continue in that topic (if not, I'll create a new one)

I have strange issue with 7c80,
Im configuring spindle. Spindleout works finally,
but I cant configure ENA/DIR isolated output

I configured them as
setp hm2_7c80.0.gpio.020.invert_output true
setp hm2_7c80.0.gpio.020.is_output true
setp hm2_7c80.0.gpio.021.invert_output true
setp hm2_7c80.0.gpio.021.is_output true

net spindle-cw => hm2_7c80.0.gpio.020.out
net spindle-ccw => hm2_7c80.0.gpio.021.out

I see that it works in a halmon once I enable it
But it does not enable the pins on a TB5

another point (not sure if it should be so) is that in the readhmid I see the following (no secondary function):
TB5-2 18 IOPort PWM 0 PWM (Out)
TB5-2 19 IOPort PWM 0 /Enable (Out)
TB5-5,6 20 IOPort None
TB5-7,8Internal 21 IOPort None

Any idea toward the error in my DNA ?

The ENA/DIR or FWD/REV outputs are switches, not voltage outputs
so must be tested with a ohmmeter or switching a load.

you, thats how I connect it, as a switch
and it does not connect it once TRUE, ohmmeter shows line disconnect

Do inputs GPIO20 and GPIO21 show low when the corresponding outputs are set true?

Im not sure I know how to check that ? could you point me to the right command ?

If its the output of halmon, than yes
(with spindle enable in lcnc)
36 bit OUT TRUE hm2_7c80.0.gpio.020.in
36 bit OUT FALSE hm2_7c80.0.gpio.020.in_not

halshow
watch tab
hm2_7c80.0.gpio.020.in
hm2_7c80.0.gpio.021.in

Is that ok (it looks like TB5 5,6,7,8 are not connected in FW)
mesaflash --device 7c80 --addr /dev/spidev0.0 --spi --readhmid | grep TB5

 

TRUE hm2_7c80.0.gpio.020.in

means disabled

This is because the outputs that drive the OPTOs are active low.
This is why you invert the outputs so setting GPIO 20 output pin
high gives an low output state.

 

Return back inverted mode

36 bit OUT FALSE hm2_7c80.0.gpio.020.in
36 bit OUT TRUE hm2_7c80.0.gpio.020.in_not
36 bit IN TRUE hm2_7c80.0.gpio.020.out <== spindle-cw

Same - no switching between EN+/EN-