Installing a SVC handler

MarkoPanger — Wed, 28 Jan 2015 12:38:57 GMT

Hi,

I'm using KSDK 1.1.0 and I'm trying to use my custom defined SVC handler.

According to the start up file the SVC_Handler is defined as weak and defining a C function with the same name should overwrite it. This seems not to be the case as I'm ending in the defaultISR handler when invoking a svc instruction.

Any idea how to install a SVC handler ?

Thanks, Marko

Re: Installing a SVC handler

xiangjun_rong — Thu, 29 Jan 2015 02:41:48 GMT

Hi, Marko,

I think you can define the SVC_Handle() api function directly in the file with main() function, after you define the SVC_Handle() api function, the weak default ISR def_irq_handler will be replaced automatically.

I tried to call the SVC, I can enter the SVC_Handle() ISR.

XiangJun Rong

#define SVC

int main (void)

{

// RX buffers

//! @param receiveBuff Buffer used to hold received data

uint8_t receiveBuff;

// Initialize standard SDK demo application pins

hardware_init();

// Call this function to initialize the console UART. This function

// enables the use of STDIO functions (printf, scanf, etc.)

dbg_uart_init();

#ifdef SVC

SVC_Handler();

#endif

// Print the initial banner

PRINTF("\r\nHello World!\n\n\r");

}

#ifdef SVC

//Rong write

void SVCCall(void)

{

__asm("SVC #2");

}

//Rong write

void SVC_Handler(void)

{

__asm("nop");

}

#endif

Kinetis Software Development KitのトピックInstalling a SVC handler

Installing a SVC handler

Re: Installing a SVC handler