topic Error: an unexpected interrupt occurs or a specific handler is not present in the application code in LPC Microcontrollers

Error: an unexpected interrupt occurs or a specific handler is not present in the application code

doini — Tue, 25 Apr 2017 05:04:00 GMT

Hello,

I created a new C++ project based on LPCOpen for the LPCXpresso1549 demo board, and I copied the code from LPCOpen periph_adc project to try it in my C++ project. It compiled just fine, but at run time it will block here:

//*****************************************************************************

// Processor ends up here if an unexpected interrupt occurs or a specific

// handler is not present in the application code.

//*****************************************************************************

__attribute__ ((section(".after_vectors")))

void IntDefaultHandler(void)

{ while(1) {}

}

Also the message: 'No source available for "0x30000b8" ' appears.

I attach here my project.

I would really appreciate any help.

Thank you,

Doini

Original Attachment has been moved to: Workspace_Receiver_LPC1549.zip

Re: Error: an unexpected interrupt occurs or a specific handler is not present in the application code

lpcxpresso_supp — Tue, 25 Apr 2017 10:32:08 GMT

One thing to watch with C++ is the name mangling of the interrupt handler names. For more details see : Startup code and interrupt handlers

With regards to the message 'No source available for "0x30000b8" - this does occasionally happen. But you can just ignore this and close the tab containing it. The debugger has simply stopped the MCU during the connection sequence whilst it was executing code in the ROM bootloader (causing the IDE to try to display the code at that location - which of course there is no source for in your application).

Regards,

LPCXpresso Support

Re: Error: an unexpected interrupt occurs or a specific handler is not present in the application code

doini — Tue, 25 Apr 2017 19:00:22 GMT

Thank you, I wrote extern "C" {...} around the interrupt functions and it is working now, the error disappeared.

Doini