evm5515 code composer 3.3 +dsp/bios

talmor zilberman

I'm running the following code , which I copied from CSL . this code defined gpio pin 4 as input pin falling edge interrupt:

CSL_Status status;
CSL_GpioPinConfig config;

/* Disable CPU interrupt */
IRQ_globalDisable();

/* Clear any pending interrupts */
IRQ_clearAll();

/* Disable all the interrupts */
IRQ_disableAll();

/* Initialize Interrupt Vector table */
IRQ_setVecs((Uint32)(&VECSTART));

/* Open GPIO module */
    hGpio = GPIO_open(&GpioObj,&status);
    if((NULL == hGpio) || (CSL_SOK != status))
    {
        return GPIO_OPEN_FAILED;
    }

/* Reset the GPIO module */
GPIO_reset(hGpio);

    /** test GPIO_config API to make PIN4 as i/p */
config.pinNum    = CSL_GPIO_PIN4;
    config.direction = CSL_GPIO_DIR_INPUT;
    config.trigger   = CSL_GPIO_TRIG_FALLING_EDGE;
    status = GPIO_configBit(hGpio,&config);
if(CSL_SOK != status)
{
  return GPIO_CONF_FAILED;
}

/* Enable GPIO interrupts */
status = GPIO_enableInt(hGpio,CSL_GPIO_PIN4);
if(CSL_SOK != status)
{
return GPIO_EN_INT_FAILED;
}

/* Clear any pending Interrupt */
IRQ_clear(GPIO_EVENT);

IRQ_plug(GPIO_EVENT,&gpio_ISR);

     /* Enabling Interrupt */
    IRQ_enable(GPIO_EVENT);
    IRQ_globalEnable();

during compilation I'm getting the following warning:

">> warning: creating output section vectors without SECTIONS specification"

what does it mean?

over 14 years ago

0 Hyun Kim over 14 years ago

TI__Genius 14965 points

Hi,

Can you check your .cmd file in your project? Your VECTOR section may not be assigned.

Regards,

0 talmor zilberman over 14 years ago in reply to Hyun Kim

Expert 1160 points

I thought.cmd file is created automatically according to the setting in the configuration tool.

can .cmd file be changed?

0 Hyun Kim over 14 years ago in reply to talmor zilberman

TI__Genius 14965 points

Hi,

If you are not using BIOS, you need to add .cmd to your project.

Regards,

Hyun

0 talmor zilberman over 14 years ago in reply to Hyun Kim

Expert 1160 points

I removed the interrupt setting from the above code and I'm using the BIOS for INTERRUPT setting as followeing:

1. The gpio_init() procedure init gpio pin4 as input interrupt and falling edge

int8 gpio_init(void)
{
CSL_Status status;
CSL_GpioPinConfig config;

/* Open GPIO module */
hGpio = GPIO_open(&GpioObj,&status);
if((NULL == hGpio) || (CSL_SOK != status))
{
return GPIO_OPEN_FAILED;
}

/* Reset the GPIO module */
GPIO_reset(hGpio);

/** test GPIO_config API to make PIN4 as i/p */
config.pinNum = CSL_GPIO_PIN4;
config.direction = CSL_GPIO_DIR_INPUT;
config.trigger = CSL_GPIO_TRIG_FALLING_EDGE;
status = GPIO_configBit(hGpio,&config);
if(CSL_SOK != status)
{
return GPIO_CONF_FAILED;
}
/* Enable GPIO interrupts */
status = GPIO_enableInt(hGpio,CSL_GPIO_PIN4);
if(CSL_SOK != status)
{
return GPIO_EN_INT_FAILED;
}

return GPIO_OK;
}

2. using the bios configuration tool I define HWI_INT21 calbk function

bios.HWI.instance("HWI_INT21").fxn = prog.extern("gpio_ISR");

bios.HWI.instance("HWI_INT21").useDispatcher = 1;

3. implement gpio_ISR() clbk functio

void
gpio_ISR(void)
{

CSL_Status status;

/* Check for GPIO Interrupt Flag Register */
if((1 == GPIO_statusBit(hGpio,CSL_GPIO_PIN4,&status)))
{
/* Clear GPIO Interrupt Flag Register */
GPIO_clearInt(hGpio,CSL_GPIO_PIN4);
IRQ_disable(GPIO_EVENT);

/* Read data on pin 4 */
//status = GPIO_read(hGpio, CSL_GPIO_PIN4, &readVal);
fp_sync_interrupt();
IRQ_enable(GPIO_EVENT);

}

}

I can see the line toggled on scope _____| |____

But the interrupt routine is not called.

0 Pratap Reddy M V over 14 years ago in reply to talmor zilberman

Expert 2615 points

Hi,

Are you enabling GPIO global interrupts in IER?. You can do it using IRQ_enable(GPIO_EVENT);

Pratap.

0 talmor zilberman over 14 years ago in reply to Pratap Reddy M V

Expert 1160 points

thanks

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evm5515 code composer 3.3 +dsp/bios