[RTOS Support] Interrupt handler issues in the LPC1114 examp

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Interrupt handler issues in the LPC1114 examp

Posted by maxter on November 14, 2012

Hi

I downloaded the latest release, 7.3.0, and while trying to work with the LPC1114 example for the LPCXpresso toolchain, my little application hanged at the SVC_Handler handler interrupt.

After digging into the source code I found that changing this line

#define vPortSVCHandler SVCall_Handler

for this other one

#define vPortSVCHandler SVC_Handler

(FreeRTOSConfig.h, line 143)

make my application to run nicely and smoothly.

Is that a bug?

Greetings!!

RE: Interrupt handler issues in the LPC1114 examp

Posted by Richard on November 14, 2012

No, it comes about because CodeRed did not have the correct CMSIS names for their default handlers, so the names in their default vector tables was different.

SVC_Handler is the standard name, so it looks like CodeRed have changed their code.

Regards.

RE: Interrupt handler issues in the LPC1114 examp

Posted by maxter on November 14, 2012

I got it!!

So the example was written when the default's handler names were different. Then, later on, CodeRed changed their names to the standard ones?

This is a short list of interrupt handler names that are found in cr_startup_lpc12xx.c (LPCXpresso 5.0.10)

     void ResetISR(void);
WEAK void NMI_Handler(void);
WEAK void HardFault_Handler(void);
WEAK void SVC_Handler(void);
WEAK void PendSV_Handler(void);
WEAK void SysTick_Handler(void);
WEAK void IntDefaultHandler(void);