CCS/CC1310: Simple GPIO usage with DriverLib and no TI-RTOS

user4541383

Intellectual 725 points

Part Number: CC1310

Tool/software: Code Composer Studio

For an extremely simple CC1310 application, I want to use a GPIO output.

Using the CC13xx Driver Library, I do the following:

// Configure pin as standard digital output

IOCPinTypeGpioOutput( PWRKEY_PORT );

// Toggle the pin for test purpose:
GPIO_writeDio( PWRKEY_PORT, 0 );
GPIO_writeDio( PWRKEY_PORT, 1 );
GPIO_writeDio( PWRKEY_PORT, 0 );

The above code compiles OK. But when running the code on the target, shows that the calls to "GPIO_writeDio()" is not compiled or optimized out: I can't set a breakpoint on the three lines, and singlestepping just jumps over.

The project uses no optimization, so why are these lines optimized away?

Am I doing anything wrong?

Thanks, Kaare

over 7 years ago

0 Keith Barkley over 7 years ago

Guru 42855 points

Often those calls are just register writes, not really functions. Try hovering over the call.

Is it working?

0 user4541383 over 7 years ago in reply to Keith Barkley

Intellectual 725 points

Hi Keith

Hovering over the call works fine.

But I have realized that the call to IOCPinTypeGpioOutput() is placed in ROM.

IOCPinTypeGpioOutput() is just defined as an address in ROM.

I cannot jump over this ROM function call. So it seems that my problem is actually this call and not the preceeding calls.

Do you have any idea why everything stock by this call?

Thanks

Kaare

0 user4541383 over 7 years ago in reply to user4541383

Intellectual 725 points

No-one, please ????

0 AB over 7 years ago in reply to user4541383

TI__Mastermind 23806 points

Sorry for the delay.

/* GPIO power */
PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH | PRCM_DOMAIN_SERIAL);
while (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH | PRCM_DOMAIN_SERIAL)
!= PRCM_DOMAIN_POWER_ON);

/* GPIO power */
PRCMPeripheralRunEnable(PRCM_PERIPH_GPIO);
PRCMLoadSet();
while (!PRCMLoadGet());

/* GPIO pin configuration */
IOCPinTypeGpioOutput(IOID_7);

/* SET the pin */
GPIO_setDio(BSP_IOID_FLASH_CS);

/*Clear the Pin*/
GPIO_clearDio(BSP_IOID_FLASH_CS);

Regards,
AB

Sub-1 GHz

Sub-1 GHz forum

CCS/CC1310: Simple GPIO usage with DriverLib and no TI-RTOS