CCS/TM4C1294NCPDT: Problems while creating NDK heartbeat timer

Ronan Largura

Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: SYSBIOS

Tool/software: Code Composer Studio

I'm trying to manually configure my application using C code and Cfg*() functions (as described in spru523k, section 2.1), but I'm facing a problem while creating the 100ms timer required. When I try to create the timer and associate it with the llTimerTick() function, I got this error from the compiler:
#169 argument of type "void(*)()" is incompatible with parameter of type "tu_sysbios_knl_Clock_FuncPtr"

The code related with this error is:

#include <ti/sysbios/knl/Clock.h>

extern void llTimerTick();

extern "C" void NDKManagerTaskFxn()
{
    Clock_Params clockParams;

    /* Create the NDK heart beat */
    Clock_Params_init(&clockParams);
    clockParams.startFlag = TRUE;
    clockParams.period = 1000;
    Clock_create(&llTimerTick, clockParams.period, &clockParams, NULL);    // Error here
}

Does anybody know what may be happening?

Thank you in advance,
Ronan

over 5 years ago

0 ToddMullanix over 5 years ago

TI__Guru* 96960 points

Hi Ronan,

Here is the function prototype for llTimerTick

void llTimerTick();

Here is the function prototype for a Clock function:

typedef Void (*FuncPtr)(UArg);

You can simply add a cast in the Clock_create (note you do not need the address before the llTimerTick either):

Clock_Handle ndkClockHandle;
...
ndkClockHandle = Clock_create((Clock_FuncPtr)llTimerTick, clockParams.period, &clockParams, Error_IGNORE);
if (ndkClockHandle == NULL) {
   // handle error
}

This is fine since the llTimerTick does not use any the arg in the Clock instance.

Todd

0 Ronan Largura over 5 years ago in reply to ToddMullanix

Prodigy 180 points

To cast solved my problem!

Thanks a lot, Todd!

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CCS/TM4C1294NCPDT: Problems while creating NDK heartbeat timer