question about pwm capture for v5 nano (fmu-v5 1.10.2)

[liganggg]

hi
when i want to use fmu-v5(version 1.10.2) to capture a edge from other board,
i had config the param
CAM_CAP_FBACK = 1
at the start last print in console,i can see
"
INFO [camera_capture] Not in a capture mode
INFO [camera_capture] Mode changed to 4PWM2CAP
"
but when i run "fmu test "in console
it print
"
INFO [fmu] Testing 4 servos and 2 input captures
ERROR [fmu] Unable to get capture callback for chan 4
"

i have some question about it
I'm not sure the configuration is correct;
and when config 4PWM2CAP is it means that the M1--M4 is pwm out ,and which pin can use for capture edge? AUX1 and AUX2?

Any help would be appreciated,
Thanks,

[nrogelio]

Hi,

https://docs.px4.io/master/en/assembly/quick_start_cuav_v5_nano.html#wiring-chart-overview mentions A1-A3 are capture pins but not currently suppported in PX4.

Also found this post in forums, it's not specific to V5 nano, but you can give it a try: https://discuss.px4.io/t/camera-feedback-wiring-and-setting/13569

Regards.

[hamishwillee]

@bkueng As you recall we just updated http://docs.px4.io/master/en/peripherals/camera.html#hardware_setup to indicate FMU PWM pin 6 is camera capture on PX4 master, but this does not mention having to set CAM_CAP_FBACK - do you have to set that?

Also, do you you know if the CUAV camera capture pins are supported as per #15526 (comment) ?

[bkueng]

do you have to set that?

Yes

@liganggg the configuration should be correct. You can check with camera_capture status and listener camera_trigger for trigger events.

[liganggg]

do you have to set that?

Yes

@liganggg the configuration should be correct. You can check with camera_capture status and listener camera_trigger for trigger events.

as my setting (CAM_CAP_FBACK = 1)
in the code fmu.cpp it execute
up_input_capture_set(2, Rising, 0, NULL, NULL);
up_input_capture_set(3, Rising, 0, NULL, NULL);

it mean that set FMU3(PE11) FMU4(PE9),
but nano has no io board, so it pmu1--8 map the M1--8,
for hw with px4io board(stm32f100) ,pmu1--8 map the aux1--8,
so i still can not make the capture function work well,
even use command camera_capture status it get all zero like this
INFO [camera_capture] Capture enabled : YES
INFO [camera_capture] Frame sequence : 0
INFO [camera_capture] Last trigger timestamp : 0
INFO [camera_capture] Number of overflows : 0

the same setting at cuav v5+ work well
so i think it dont support the capture funtion without px4io board.
any suggestion? thanks

[stale]

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