Work only, if compiled with "Debug" option

[reinhard1]

The firmware crash after ca. 150 ms, if not compiled with "debug" option.
I use teensyduino 1.51 and arduino 1.8.12 on linux64.

[juliandesvignes]

Hi,

I have just tested the blink example on my teensy4 with teensyduino 1.51 on release mode (-D TEENSY_OPT_FASTEST) with success. I kept it running for 30+ mins without any hard fault being triggered.
Could you provide a code sample that exhibits the problem ?

[reinhard1]

Hello,

that is strange, i use your example, just rename it to "teensy4_freertos.ino".

I build it from the arduino ide,

[trlafleur]

I'm was seeing the same problem with Optimize mode = Fastest
Then I tried all Optimize mode's, debug and all other modes works, and now Fastest also works??

Very odd...

Teensyduino 1.8.12
Teensyduino, Version 1.51
as above, --> just rename it to "teensy4_freertos.ino"

[trlafleur]

In an update....

Using anything other than debug option, makes my code un-stable....
So it appears that there are issues when one tries to optimize the code.
More testing needs to be done!