Dear people.
I have the following setup:
-PixHawk 4 mini
-PX4FLOW V2.3
Jetson TX2
-GPS
First I have set the version master to the pixhawk 4 mini
The communication from the companion board (Jetson TX2) to the groundcontrol station is via wireless.
I use EKF2 and I had Set
SENS_FLOW_ROT to 270 degrees, default
EKF2_AID_MASK to use optical flow and GPS
EKF2_HGT_MODE to use the range finder
So far I could see in the mavlink inspector the:
-optical_flow_rad
-local_position_ned
Then after some few tests with the drone where I have disabled the px4flow. Then, I upgraded the pixhawk 4 mini with the version 1.9 stable over qgroundcontrol station.
Then, the flow sensor stop working I do not see any more the -optical_flow_rad in the mavlink inspector. I can see the leds blinking on the px4flow sensor.
The extras.txt in the /etc file of the SDcard of the pixhawk is:
mavlink stop-all
mavlink start -d /dev/ttyS1 -b 921600 -r 1000 -m onboard
mavlink stream -d /dev/ttyS1 -s ATTITUDE -r 1000
I have read in the link
https://docs.px4.io/en/sensor/px4flow.html
`This does not work on FMUv5 (Pixhawk 4) for PX4 versions less than 1.9.0. All other PX4/Firmware versions should work.`
This means that the version 1.9.0 stable does not support PX4FLOW???
Any help or advise I really appreciate it.