Bots Unlimited Wifi Crash

[John Keller]

We are using the Bots Unlimited wifi board attached directly to our voxl2 board. It seems like the wifi driver will sometimes randomly crash with this message being repeated in dmesg: "Block woal_cfg80211_scan in abnormal driver state". When this happens the drone can no longer connect to wifi. We couldn't find any way in software to reboot the wifi board. To get it working again we have to power cycle the drone. Is there a fix for this?

[John Keller]

Here is the relevant part from dmesg

[ 2130.644295] FW trigger fw dump
[ 2130.644332] =====FW trigger dump====
[ 2130.644347] ==== Start Receive FW dump event  ====
[ 2130.645036] Create directory /data/dump_2130 successfully
[ 2130.645058] Firmware Dump directory name is /data/dump_2130
[ 2130.645078] === START DRIVER INFO DUMP===
[ 2130.645180] DRV dump data in /data/dump_2130/file_drv_info
[ 2130.653905] Drv info total bytes = 205002 (0x320ca)
[ 2130.653933] === DRIVER INFO DUMP END===
[ 2131.373918] ==== FW DUMP END: 1381912 bytes ====
[ 2131.374101] Start to process hanging
[ 2131.374170] Cancel all pending cmd and txrx queue
[ 2131.374381] Block woal_cfg80211_del_key in abnormal driver state
[ 2131.374408] Block woal_cfg80211_del_key in abnormal driver state
[ 2131.374430] Block woal_cfg80211_del_key in abnormal driver state
[ 2131.374451] Block woal_cfg80211_del_key in abnormal driver state
[ 2131.374472] Block woal_cfg80211_del_key in abnormal driver state
[ 2131.374493] Block woal_cfg80211_del_key in abnormal driver state
[ 2131.477115] Block woal_cfg80211_scan in abnormal driver state
[ 2132.479524] Block woal_cfg80211_scan in abnormal driver state
[ 2133.481978] Block woal_cfg80211_scan in abnormal driver state
[ 2134.484164] Block woal_cfg80211_scan in abnormal driver state
[ 2135.486210] Block woal_cfg80211_scan in abnormal driver state
[ 2136.489052] Block woal_cfg80211_scan in abnormal driver state
[ 2137.491936] Block woal_cfg80211_scan in abnormal driver state

[Hector Nevarez]

Hi John,

I can help take a look at this issue. I'll first need to try and reproduce this issue, so give me a bit here to try and do so.

Also just for my understanding can you send the output of voxl-wifi getmode so I can which wifi mode the device was configured in.

[John Keller]

@Hector-Nevarez Hi Hector,

Here is the output of voxl-wifi getmode

WiFi is currently set up as follows:
	Mode: station
	Hardware: Concurrent STA+AP capable (AP:uap0, STA:mlan0)
	Station: Active on mlan0 - "Chiron"
	SoftAP: Disabled

Thank you!