Backup Camera on Startup

[Xantha123]

Hello,
is it possible with this firmware to set the default camera on startup as the rear camera? This would be very helpful.
Thank you

[350d]

Try this script https://github.com/350d/70Mai_A800S_Firmware/blob/main/Scripts/autorun_camera_select.sh
Im not sure about rear value, try back also

[Xantha123]

Hey, thanks for the reply. I tried rear and back. Neither seemed to work for me. I have the autrun script placed in the root sd card folder. I am also on the newest custom firmware.

[350d]

Same thing on next reboot?

[Xantha123]

Yes, i tried a second reboot aswell with both rear and back. Can try again though to be sure. The autorun scripts are changeable without reflashing the firmware, right?

[350d]

Sure, you can update the scripts any way you won't to.
Maybe this front/rear just for RTSP preview stream settings...

[Xantha123]

Is there any way to be certain what it is called in the preview?

[Xantha123]

I just tried to use the network_off script. It does not seem to work for me. If i check in the camera settings, it says wifi is on. Seems like there might be a problem with executing scripts in general for me?

[beY6ai7u]

Exactly the same problem... telnet commands do work for some things, but I haven't managed to change the camera feed on the screen. I've tried the following, and different combinations of "back" "rear" "0" "1".

echo "Source back" > /tmp/cardv_fifo
echo "Source rear" > /tmp/cardv_fifo
nvconf set 0 Camera.Preview.Source.1.Camid back
nvconf set 0 Camera.Preview.Source.1.Camid rear

The only somehow interesting thing i found was that when pressing the physical button on the unit to switch the screens, this appears in the log file (/tmp/cardv.log, referenced in /bootconfig/demo.sh)

<<fifo_data =disp switch 1
hand fifo =disp switch 1
disp cmd [2052] mode [0]
CarDV_DispStopPreview ok
disp cmd [2051] mode [1]
jiangc CarDV_DispStartPreview  u8CamId:1 
 jiangc g_CamSwitchBySrcChange :1 FirstCamSwitchPlay:0   eDispMode:1 
<<fifo_data =audioplay 1 /customer/audio/Button.wav
hand fifo =audioplay 1 /customer/audio/Button.wav
audio:3,0, 3
<<fifo_data =disp switch 0
hand fifo =disp switch 0
disp cmd [2052] mode [1]
CarDV_DispStopPreview ok
disp cmd [2051] mode [0]
jiangc CarDV_DispStartPreview  u8CamId:0 
 jiangc g_CamSwitchBySrcChange :1 FirstCamSwitchPlay:1   eDispMode:0 
<<fifo_data =audioplay 1 /customer/audio/Button.wav
hand fifo =audioplay 1 /customer/audio/Button.wav
audio:3,0, 3

No idea what to do with it though, any help or cue appreciated!

edit:

got it working with

echo "disp switch 1" > /tmp/cardv_fifo

so just put that as an autorun file on the SD card (e.g. autorun_rearcamera.sh) and it shows the rear camera on boot :)

#!/bin/sh

##############################
## CGI_CMD
##############################
export PATH=/sbin:/bin:/customer/wifi:/usr/bin:/usr/sbin
export LD_LIBRARY_PATH=/lib:/customer/wifi/lib
REC_STATUS=/tmp/rec_status
VIDEOPARAM=/tmp/cardv_fifo
FW_SETENV=/config/bin/fw_setenv

##############################

sleep 3
echo "disp switch 1" > /tmp/cardv_fifo # display the rear
sync

[Xantha123]

Oh wow! Thought I could not change it and gave up since I do not know much about programming. Will try this tomorrow. Hope this works for me too. This would be awesome. Thanks!