SAADC Simple mode with IRQs

#include <stdbool.h>
#include <stdint.h>
#include <nrfx_saadc.h>
 
static volatile bool is_ready;
static nrf_saadc_value_t sample;
 
nrfx_saadc_channel_t channel = NRFX_SAADC_DEFAULT_CHANNEL_SE(NRF_SAADC_INPUT_AIN1, 0);
 
static void handle_error(nrfx_err_t error_code)
{
    if (error_code!= NRFX_SUCCESS)
    {
        // error
        while(1){};
    }
}
 
static void event_handler(nrfx_saadc_evt_t const * p_event)
{
    if (p_event->type == NRFX_SAADC_EVT_DONE)
    {
        // Buffer with data is available here: p_event->data.done.p_buffer
        is_ready = true;
    }
}
 
int main(void)
{
    nrfx_err_t err_code;
 
    err_code = nrfx_saadc_init(NRFX_SAADC_DEFAULT_CONFIG_IRQ_PRIORITY);
    handle_error(err_code);
 
    err_code = nrfx_saadc_channels_config(&channel, 1);
    handle_error(err_code);
 
    while (1)
    {
        is_ready = false;
        err_code = nrfx_saadc_simple_mode_set((1<<0),
                                              NRF_SAADC_RESOLUTION_10BIT,
                                              NRF_SAADC_OVERSAMPLE_DISABLED,
                                              event_handler);
        handle_error(err_code);
        err_code = nrfx_saadc_buffer_set(&sample, 1);
        handle_error(err_code);
        err_code = nrfx_saadc_mode_trigger();
        handle_error(err_code);
        while(!is_ready){};
    }
}