interrupt.h File Reference

Code to detect and generate interrupts. More...

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Functions
void	initGPIO_interrupt (void)
	GPIO interrupt initialization. More...

Detailed Description

Code to detect and generate interrupts.

Version

1.0

Author

Jona Cappelle

Definition in file interrupt.h.

Function Documentation

initGPIO_interrupt()

void initGPIO_interrupt

(

void

)

GPIO interrupt initialization.

Interrupt functionality used by IMU

Definition at line 42 of file interrupt.c.

{
  // Configure GPIO pins
  CMU_ClockEnable(cmuClock_GPIO, true);
 
  // Configure PB0 and PB1 as input with glitch filter enabled
  GPIO_PinModeSet(ICM_20948_INTERRUPT_PORT, ICM_20948_INTERRUPT_PIN, gpioModeInputPullFilter, 0);
 
 
  /* Clear all odd pin interrupt flags (just in case)
   * NVIC_ClearPendingIRQ(GPIO_ODD_IRQn); would also work but is less "readable" */
  GPIO_IntClear(0xAAAA);
 
  /* Clear all even pin interrupt flags (just in case)
   * NVIC_ClearPendingIRQ(GPIO_EVEN_IRQn); would also work but is less "readable" */
  GPIO_IntClear(0x5555);
 
  // Enable IRQ for even numbered GPIO pins
  NVIC_EnableIRQ(GPIO_EVEN_IRQn);
 
  // Enable IRQ for odd numbered GPIO pins
  NVIC_EnableIRQ(GPIO_ODD_IRQn);
 
  /* Enable rising-edge interrupts for ICM_20948 */
  GPIO_ExtIntConfig(ICM_20948_INTERRUPT_PORT, ICM_20948_INTERRUPT_PIN, ICM_20948_INTERRUPT_PIN, true, false, true);
}

References ICM_20948_INTERRUPT_PIN, and ICM_20948_INTERRUPT_PORT.