Linux/TDA2E: TDA2X/Linux : Application (apps.out) Autorun can't work by standard input(fd=0, ttyS0)

Part Number:TDA2E

Tool/software: Linux

Hi,

I build Linux image (apps.out) with VSDKv3.5 which could work fine by run shell script from terminal on the TDA2X EVM board.

The shell script (autorun.sh):

#!/bin/bash

cd  /opt/vision_sdk

source ./vision_sdk_load.sh

./apps.out

Then I add the autorun.sh script into /etc/init.d by the command :

          update_rc.d autorun.sh defaults

And confirmed that apps.out application(PID) start normally after reboot.

But I can't select the user case via STDIN (user input)

[HOST] [HOST  ]  ====================
 [HOST] [HOST  ]  Vision SDK Usecases
 [HOST] [HOST  ]  ====================
 [HOST] [HOST  ]  1: Single Camera Usecases
 [HOST] [HOST  ]  2: Multi-Camera LVDS Usecases
 [HOST] [HOST  ]  3: Open-Compute Usecases
 [HOST] [HOST  ]  4: AVB RX Usecases, (TDA2x & TDA2Ex ONLY)
 [HOST] [HOST  ]
 [HOST] [HOST  ]  p: CPU Status
 [HOST] [HOST  ]  i: Show IP Addr (IPU + NDK + AVB)
 [HOST] [HOST  ]
 [HOST] [HOST  ]  s: System Settings
 [HOST] [HOST  ]
 [HOST] [HOST  ]  x: Exit
 [HOST] [HOST  ]  z: Exit - AND SHUTDOWN Remote CPUs
 [HOST] [HOST  ]

And I observed that the STDIN (/proc/pid/fd/0) is link to /dev/null  in autorun mode,

but the STDIN (/proc/pid/fd/0) is link to /dev/ttyS0 in terminal/console mode.

Could you help teach me how to select the menu of autorun program via STDIN in autorun mode? Thanks.

regards,

Sam Hsieh