nRF52840 DK change scanning PHY to Coded Phy

[CraigE]

I'm trying to test long range beacons with coded phy on the nrf52840 dongle, so I've set out to turn my nrf52840 DK into a beacon scanner that will spit out data over uart.

I've started with the ble_app_uart_c example and added the BLE_GAP_EVT_ADV_REPORT to the ble_evt_handler to pick them up.

I'm running into trouble actually changing to a coded phy for scanning, and the application seems to crash when I set the init_scan.p_scan_param.

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static ble_gap_scan_params_t const m_scan_param_coded_phy =

{

.extended = 1,

.active = 0x01,

.interval = BLE_GAP_SCAN_INTERVAL_MIN,

.window = 10,

.timeout = 0x0000, // No timeout.

.scan_phys = BLE_GAP_PHY_CODED,

.filter_policy = BLE_GAP_SCAN_FP_ACCEPT_ALL,

};

static void scan_init(void)

{

ret_code_t err_code;

nrf_ble_scan_init_t init_scan;

memset(&init_scan, 0, sizeof(init_scan));

init_scan.connect_if_match = true;

init_scan.conn_cfg_tag = APP_BLE_CONN_CFG_TAG;

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

static ble_gap_scan_params_t const m_scan_param_coded_phy =
{
    .extended       = 1,
    .active        = 0x01,
    .interval      = BLE_GAP_SCAN_INTERVAL_MIN,
    .window        = 10,
    .timeout       = 0x0000, // No timeout.
    .scan_phys     = BLE_GAP_PHY_CODED, 
    .filter_policy = BLE_GAP_SCAN_FP_ACCEPT_ALL,
};


static void scan_init(void)
{
    ret_code_t          err_code;
    nrf_ble_scan_init_t init_scan;

    memset(&init_scan, 0, sizeof(init_scan));

    init_scan.connect_if_match = true;
    init_scan.conn_cfg_tag     = APP_BLE_CONN_CFG_TAG;
    
    init_scan.p_scan_param = &m_scan_param_coded_phy; // My addition

    err_code = nrf_ble_scan_init(&m_scan, &init_scan, scan_evt_handler);
    APP_ERROR_CHECK(err_code);

    err_code = nrf_ble_scan_filter_set(&m_scan, SCAN_UUID_FILTER, &m_nus_uuid);
    APP_ERROR_CHECK(err_code);

    err_code = nrf_ble_scan_filters_enable(&m_scan, NRF_BLE_SCAN_UUID_FILTER, false);
    APP_ERROR_CHECK(err_code);
}

Not sure what's going on here at all, or if I'm at all doing the right thing!