GPIO interrupt on c6472 evm

Hi!

I'm trying to handle interrupts generated on rising edges of GPIO.

Could you make some suggestions what I'm missing in the code below?

The gpio_task is called, but then no interrupt is generated while toggling the GPIO0 and GPIO1 pins.

CSL_GpioRegsOvly hGpio = (CSL_GpioRegsOvly)CSL_GPIO_0_REGS;

#define GPIO_CFG_BASE (0x02B00000)
#define GPIO_REG_BINTEN (0x8)
#define GPIO_REG_DIR (0x10)
#define GPIO_REG_OUT_DATA (0x14)
#define GPIO_REG_SET_DATA (0x18)
#define GPIO_REG_CLR_DATA (0x1C)
#define GPIO_REG_IN_DATA (0x20)
#define GPIO_REG_SET_RIS_TRIG (0x24)
#define GPIO_REG_CLR_RIS_TRIG (0x28)
#define GPIO_REG_SET_FAL_TRIG (0x2C)
#define GPIO_REG_CLR_FAL_TRIG (0x30)

void gpio_task(void)
{

LOG_printf(&trace,"gpio_task called");

// Set GPIO 0 and 1 as outputs
// Note: Normally you would want these as inputs, but in this case we
// are configuring them as outputs to eliminate the need for external
// loopbacks, etc.
hGpio->DIR &= (~3); // set DIR0 and DIR1 to set them as outputs

// Enable rising edge interrupt on GPIO 0 and 1
hGpio->SET_RIS_TRIG = 0x3;

// Enable BINTEN.EN0 (it gates all interrupts pertaining to bank0 pins)
hGpio->BINTEN |= 1;

while(1)
{
// Generate rising edge on GPIO 0 and 1
hGpio->CLR_DATA = 3;
hGpio->SET_DATA = 3;

TSK_sleep(100);
}
}

void gpio_0()
{
LOG_printf(&trace,"Executing gpio_0 ISR.");
}

void gpio_1()
{
LOG_printf(&trace,"Executing gpio_1 ISR.");
}

void main(void) {

//set GPIO_0 pin as an input
//*(unsigned int*)(GPIO_CFG_BASE+GPIO_REG_DIR) |= 0x1;
//set GPIO_0 pin as an output
*(unsigned int*)(GPIO_CFG_BASE+GPIO_REG_DIR) &= 0xFFFFFFFE;

//set rising edge to trigger GPIO_0 interrupt
*(unsigned int*)(GPIO_CFG_BASE+GPIO_REG_SET_RIS_TRIG) |= 0x1;

//clear falling edge of GPIO_0
*(unsigned int*)(GPIO_CFG_BASE+GPIO_REG_SET_FAL_TRIG) &= 0xFFFFFFFE;

//enable GPIO interrupts
*(unsigned int*)(GPIO_CFG_BASE+GPIO_REG_BINTEN) |= 0x1;

//Start BIOS
BIOS_start();

/* fall into DSP/BIOS idle loop */
return;

}

the TCF file looks like this:

utils.loadPlatform("ti.platforms.evm6472");

/* The following DSP/BIOS Features are enabled. */
bios.enableRealTimeAnalysis(prog);
bios.enableRtdx(prog);
bios.enableTskManager(prog);

bios.LOG.create("trace");
bios.LOG.instance("trace").bufLen = 2048;
bios.TSK.instance("TSK_idle").order = 1;

bios.TSK.create("GPIO");
bios.TSK.instance("GPIO").order = 3;
bios.TSK.instance("GPIO").fxn = prog.extern("gpio_task");
bios.TSK.instance("GPIO").priority = 3;

bios.HWI.instance("HWI_INT4").interruptSelectNumber = 64;
bios.HWI.instance("HWI_INT4").fxn = prog.extern("gpio_0");
bios.HWI.instance("HWI_INT4").useDispatcher = 1;
bios.HWI.instance("HWI_INT4").interruptMask = "all";

bios.HWI.instance("HWI_INT5").interruptSelectNumber = 65;
bios.HWI.instance("HWI_INT5").fxn = prog.extern("gpio_1");
bios.HWI.instance("HWI_INT5").useDispatcher = 1;
bios.HWI.instance("HWI_INT5").interruptMask = "all";

// !GRAPHICAL_CONFIG_TOOL_SCRIPT_INSERT_POINT!

prog.gen();

Thanks in advance!

Regards,

./z