defining a new gpio interrupt for efr32fg14 EVM

[yefj]

Hello, i have the following example bellow shown bellow,it uses these two lines.
where we enable the interrupts using GPIO_EVEN_IRQn 16+10 and GPIO_ODD_IRQn 16+18
NVIC_EnableIRQ(GPIO_EVEN_IRQn)
NVIC_EnableIRQ(GPIO_ODD_IRQn)
Also they have created special event handler function for this special case.

i want to enable interrupt only for PF7(not even or odd) and write an event handler for it.
How do i know whar 16+X number to use for this case?
How to write properly the event handler name?
Thanks.

datasheet:
https://www.silabs.com/documents/public/data-sheets/efr32fg14-datasheet.pdf
user guide:
https://www.silabs.com/documents/public/user-guides/ug318-brd4257b-user-guide.pdf

code example link:
https://github.com/SiliconLabs/peri...ries1/gpio/switch_led_interrupt/src/main_s1.c

#include "em_device.h"
#include "em_chip.h"
#include "em_cmu.h"
#include "em_emu.h"
#include "em_gpio.h"
#include "bsp.h"

/**************************************************************************//**
* @brief GPIO Even IRQ for pushbuttons on even-numbered pins
*****************************************************************************/
void GPIO_EVEN_IRQHandler(void)
{
  // Clear all even pin interrupt flags
  GPIO_IntClear(0x5555);

  // Toggle LED0
  GPIO_PinOutToggle(BSP_GPIO_LED0_PORT, BSP_GPIO_LED0_PIN);
}

/**************************************************************************//**
* @brief GPIO Odd IRQ for pushbuttons on odd-numbered pins
*****************************************************************************/
void GPIO_ODD_IRQHandler(void)
{
  // Clear all odd pin interrupt flags
  GPIO_IntClear(0xAAAA);

  // Toggle LED01
  GPIO_PinOutToggle(BSP_GPIO_LED1_PORT, BSP_GPIO_LED1_PIN);
}

/**************************************************************************//**
* @brief GPIO initialization
*****************************************************************************/
void initGPIO(void)
{
  // Enable GPIO clock
  CMU_ClockEnable(cmuClock_GPIO, true);

  // Configure PB0 and PB1 as input with glitch filter enabled
  GPIO_PinModeSet(BSP_GPIO_PB0_PORT, BSP_GPIO_PB0_PIN, gpioModeInputPullFilter, 1);
  GPIO_PinModeSet(BSP_GPIO_PB1_PORT, BSP_GPIO_PB1_PIN, gpioModeInputPullFilter, 1);

  // Configure LED0 and LED1 as output
  GPIO_PinModeSet(BSP_GPIO_LED0_PORT, BSP_GPIO_LED0_PIN, gpioModePushPull, 0);
  GPIO_PinModeSet(BSP_GPIO_LED1_PORT, BSP_GPIO_LED1_PIN, gpioModePushPull, 0);

  // 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 falling-edge interrupts for PB pins
  GPIO_ExtIntConfig(BSP_GPIO_PB0_PORT, BSP_GPIO_PB0_PIN,BSP_GPIO_PB0_PIN, 0, 1, true);
  GPIO_ExtIntConfig(BSP_GPIO_PB1_PORT, BSP_GPIO_PB1_PIN, BSP_GPIO_PB1_PIN, 0, 1, true);
}

/**************************************************************************//**
* @brief  Main function
*****************************************************************************/
int main(void)
{
  // Chip errata
  CHIP_Init();

  // Initializations
  initGPIO();

  while (1){
    // Enter Low Energy Mode until an interrupt occurs
    EMU_EnterEM3(false);
  }
}

 

[KlausST]

Hi,

why not using the function of your other thread?

Klaus

 

[yefj]

Hello Klauss, In the list bellow i get list of possible interrupts.
the names of the intterupt handler is shown bellow.

In the code example we enable the interrupt by NVIC_EnableIRQ(GPIO_EVEN_IRQn);
when interrupt happens we clear it using GPIO_IntClear(0x5555) in the event handler.

where does 0x5555 goes?
How GPIO ports and pins linked to 0x5555?
Thanks.

Thanks.

EFM32 Gecko Software Documentation: EFM32G890F128

siliconlabs.github.io

EZR32 Leopard Gecko Software Documentation: D:/jenkins-slave/workspaces/Executor-0/super/platform/Device/SiliconLabs/EZR32LG/Include/system_ezr32lg.h File Reference

siliconlabs.github.io

#include "em_device.h"
#include "em_chip.h"
#include "em_cmu.h"
#include "em_emu.h"
#include "em_gpio.h"
#include "bsp.h"

/**************************************************************************//**
* @brief GPIO Even IRQ for pushbuttons on even-numbered pins
*****************************************************************************/
void GPIO_EVEN_IRQHandler(void)
{
  // Clear all even pin interrupt flags
  GPIO_IntClear(0x5555);

  // Toggle LED0
  GPIO_PinOutToggle(BSP_GPIO_LED0_PORT, BSP_GPIO_LED0_PIN);
}

/**************************************************************************//**
* @brief GPIO Odd IRQ for pushbuttons on odd-numbered pins
*****************************************************************************/
void GPIO_ODD_IRQHandler(void)
{
  // Clear all odd pin interrupt flags
  GPIO_IntClear(0xAAAA);

  // Toggle LED01
  GPIO_PinOutToggle(BSP_GPIO_LED1_PORT, BSP_GPIO_LED1_PIN);
}

/**************************************************************************//**
* @brief GPIO initialization
*****************************************************************************/
void initGPIO(void)
{
  // Enable GPIO clock
  CMU_ClockEnable(cmuClock_GPIO, true);

  // Configure PB0 and PB1 as input with glitch filter enabled
  GPIO_PinModeSet(BSP_GPIO_PB0_PORT, BSP_GPIO_PB0_PIN, gpioModeInputPullFilter, 1);
  GPIO_PinModeSet(BSP_GPIO_PB1_PORT, BSP_GPIO_PB1_PIN, gpioModeInputPullFilter, 1);

  // Configure LED0 and LED1 as output
  GPIO_PinModeSet(BSP_GPIO_LED0_PORT, BSP_GPIO_LED0_PIN, gpioModePushPull, 0);
  GPIO_PinModeSet(BSP_GPIO_LED1_PORT, BSP_GPIO_LED1_PIN, gpioModePushPull, 0);

  // 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 falling-edge interrupts for PB pins
  GPIO_ExtIntConfig(BSP_GPIO_PB0_PORT, BSP_GPIO_PB0_PIN,BSP_GPIO_PB0_PIN, 0, 1, true);
  GPIO_ExtIntConfig(BSP_GPIO_PB1_PORT, BSP_GPIO_PB1_PIN, BSP_GPIO_PB1_PIN, 0, 1, true);
}

/**************************************************************************//**
* @brief  Main function
*****************************************************************************/
int main(void)
{
  // Chip errata
  CHIP_Init();

  // Initializations
  initGPIO();

  while (1){
    // Enter Low Energy Mode until an interrupt occurs
    EMU_EnterEM3(false);
  }
}