MSP-EXP432P401R: stdio sscanf stops the program from running

Connor Fitzsimmons

Part Number: MSP-EXP432P401R

Hello, i am currently having an interesting issue.

For some reason sscanf kills my program, i have no idea why this is occuring as yesterday sscanf ran with no issues at all. The program is an energia project if that provides any extra information.

The program ends up getting stuck in an infinite loop within the ti_sysbios_family_arm_m3_Hwi_excHandlerAsm__I function which i have run into happening before for a different reason that disappeared a while ago. Id think its something to do with the RTOS no longer running the "main" task and just waits for a hardware interrupt of some kind.

Any help will be greatly appreciated.

over 5 years ago

0 Bruce McKenney over 5 years ago

Guru 95170 points

I vaguely recall someone else running into this recently (maybe on the E-series) but I can't seem to find it.

I think the solution there was to increase the (task's) stack size.

0 Connor Fitzsimmons over 5 years ago in reply to Bruce McKenney

Intellectual 290 points

How do i do that? i dont see it in the build settings anywhere.

Is it somewhere in the RTOS?

0 Bruce McKenney over 5 years ago in reply to Connor Fitzsimmons

Guru 95170 points

I don't know much about TI-RTOS. How do you define your tasks? I expect stack size is one of the startup function arguments.

0 Connor Fitzsimmons over 5 years ago in reply to Connor Fitzsimmons

Intellectual 290 points

Thank you, this seems to have resolved my issue. As i am using energia i had to modify the "main.cpp" that is generated to connect the RTOS to the energia program.

It was weird though as i was somehow using 2kB of stack which is extremely surprising.

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MSP-EXP432P401R: stdio sscanf stops the program from running