SAADC Simple blocking mode

#include <stdbool.h>
#include <stdint.h>
#include <nrfx_saadc.h>
 
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){};
    }
}
 
int main(void)
{
    nrfx_err_t err_code;
 
    nrf_saadc_value_t sample;
 
    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);
 
    err_code = nrfx_saadc_simple_mode_set((1<<0),
                                          NRF_SAADC_RESOLUTION_10BIT,
                                          NRF_SAADC_OVERSAMPLE_DISABLED,
                                          NULL);
    handle_error(err_code);
 
    err_code = nrfx_saadc_buffer_set(&sample, 1);
    handle_error(err_code);
 
    while (1)
    {
        err_code = nrfx_saadc_mode_trigger();
        handle_error(err_code);
        printf("sample %d", sample);
        NRFX_DELAY_US(1000000);
 
    }
}