Casting out decimal values in BLE Scanner

Hi there,

I would like to cast out decimal values from the BLE scanner. How can I implement it? I am trying to use the arch_printf ability but I do not how to do it exactly. Since, I want the values to be in the attribute of the characteristics of ADC VAL 1, Thanks!

Here's my code:

void app_adcval1_timer_cb_handler()
{
struct custs1_val_ntf_req* req = KE_MSG_ALLOC_DYN(CUSTS1_VAL_NTF_REQ,
TASK_CUSTS1,
TASK_APP,
custs1_val_ntf_req,
DEF_CUST1_ADC_VAL_1_CHAR_LEN);

// ADC value to be sampled
static uint32_t heart_rate, sample, sample2;

adc_init (GP_ADC_SE, 0, GP_ADC_ATTN3X);
adc_enable_channel (ADC_CHANNEL_P01);
sample = adc_get_sample ();

adc_init (GP_ADC_SE, GP_ADC_SIGN, GP_ADC_ATTN3X);
adc_enable_channel (ADC_CHANNEL_P01);
sample2 = adc_get_sample ();

heart_rate = (sample + sample2);
heart_rate = heart_rate/2;

req->conhdl = app_env->conhdl;
req->handle = CUST1_IDX_ADC_VAL_1_VAL;
req->length = DEF_CUST1_ADC_VAL_1_CHAR_LEN;
memcpy(req->value, &heart_rate, DEF_CUST1_ADC_VAL_1_CHAR_LEN);

ke_msg_send(req);

if (ke_state_get(TASK_APP) == APP_CONNECTED)
{
// Set it once again until Stop command is received in Control Characteristic
timer_used = app_easy_timer(APP_PERIPHERAL_CTRL_TIMER_DELAY, app_adcval1_timer_cb_handler);
}
}