PWM module does not want to access the custom interrupt routine but always jumps to the default rout

fi_schi_ — Tue, 11 Jun 2024 11:54:25 GMT

Hi there,

I am working with the FRDM-MCXA153 board.
I´m trying to get an interruot on every rising edge using the standart PWM example portet to c++.
So far so simpe, bit unfortunately the interrupt always wants to jump tot the standart interrupt routine (declared as WEAK) and ignores my self-written one.

The PWM module is configured via ConfigTools -> Peripherals -> FLEXPWM0 and should generate an interrupt at VAL2.

Thanks in advance for your help.

Re: PWM module does not want to access the custom interrupt routine but always jumps to the default

snech99 — Tue, 11 Jun 2024 12:05:55 GMT

Hi,

if your main-file is written in c++, you need to add extern "C" before your ISR.

Following is a short text I found in the startup file:

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

// Forward declaration of the core exception handlers.

// When the application defines a handler (with the same name), this will

// automatically take precedence over these weak definitions.

// If your application is a C++ one, then any interrupt handlers defined

// in C++ files within in your main application will need to have C linkage

// rather than C++ linkage. To do this, make sure that you are using extern "C"

// { .... } around the interrupt handler within your main application code.

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

topic PWM module does not want to access the custom interrupt routine but always jumps to the default rout in MCX Microcontrollers

PWM module does not want to access the custom interrupt routine but always jumps to the default rout

Re: PWM module does not want to access the custom interrupt routine but always jumps to the default