What is maximum GPIOTE Peripheral clock frequency for Interrupts? [Without PPI] nrf52832

[boraciner]

I'm not using softdevice, What is maximum GPIOTE Peripheral clock frequency for Interrupts for nrf52832? [Without PPI] 

Thanks

[boraciner]

Here is the difference between polling and ISR.. polling is working much better.. What's wrong???

#include <stdbool.h>
#include <stdint.h>
#include "nrf.h"
#include "nrf_drv_timer.h"
#include "nrf_drv_clock.h"
#include "nrf_drv_gpiote.h"
#include "app_error.h"
#include "nrf_delay.h"
#include "boards.h"
#include "app_error.h"

#define PIN_TO_TOGGLE 27
#define PIN_TO_TOGGLE2 28
#define PIN_SCL 25

//#define USE_INTERRUPTS

#ifdef USE_INTERRUPTS
void in_pin_scl_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
    

    if(nrf_drv_gpiote_in_is_set(PIN_SCL))
        nrf_gpio_pin_set(PIN_TO_TOGGLE2);
    else
        nrf_gpio_pin_clear(PIN_TO_TOGGLE2);

}
#endif


static void hfclk_config(void) {
    ret_code_t err_code = nrf_drv_clock_init();
    APP_ERROR_CHECK(err_code);

    nrf_drv_clock_hfclk_request(NULL);
}


int main(void)
{
    hfclk_config();   
    
    ret_code_t err_code;
    if(!nrf_drv_gpiote_is_init())
    {
        err_code = nrf_drv_gpiote_init();
        APP_ERROR_CHECK(err_code);
    }

    #ifdef USE_INTERRUPTS
    nrf_drv_gpiote_in_config_t in_config2 = GPIOTE_CONFIG_IN_SENSE_TOGGLE(true);
    in_config2.pull = NRF_GPIO_PIN_PULLUP;

    err_code = nrf_drv_gpiote_in_init(PIN_SCL, &in_config2, in_pin_scl_handler);
    APP_ERROR_CHECK(err_code);
    
    nrf_drv_gpiote_in_event_enable(PIN_SCL, true);
    #else
    nrf_gpio_cfg_input(PIN_SCL,NRF_GPIO_PIN_PULLUP);
    #endif
    
    nrf_gpio_cfg_output(PIN_TO_TOGGLE);
    nrf_gpio_cfg_output(PIN_TO_TOGGLE2);

    while (1)
    {
        #ifndef USE_INTERRUPTS
        if(nrf_drv_gpiote_in_is_set(PIN_SCL))
            nrf_gpio_pin_set(PIN_TO_TOGGLE);
        else
            nrf_gpio_pin_clear(PIN_TO_TOGGLE);
        #endif
    }
    
   
}

/** @} */