B4J Question JSerial and Raspberry Pi crash

[techknight]

I keep getting a crash of this:

terminate called after throwing an instance of 'std::bad_alloc'

Sometimes after opening or closing the serial port.

Sometimes if the serial port is open, I do a send, then I do Astream.close, and Serial1.close, the app crashes with that error.

I cant seem to solve it. Any ideas?

 

[Erel]

This is a low level error.

Which port are you opening?

Similar error reported here: https://www.b4x.com/android/forum/threads/rpi3-and-std-bad_alloc.65974/

 

[techknight]

ttyUSB0 is what I am using. its connected to an FTDI xBee explorer board.

 

[Erel]

I do Astream.close, and Serial1.close, the app crashes with that error.

1. Use Sleep to wait a second or two after you send the data and before you close the serial port.

2. Consider keeping the serial open until your app terminates.

 

[techknight]

Well its a Kiosk type thing so if the app terminates itll be because of a power loss or etc...

So, I think I will keep the serial port open.

 

[Erel]

If it is expected to run 24/7 then create another non-ui app that checks whether the main app is running and starts it if it is not running.