BlueNRG-LP Hard Fault on Reset with BLE active

[IJenk.1]

I am using a BlueNRG-LP MC355 SoC. When connected to my debugger, I can call NVIC_SystemReset() just fine. However, if I disconnect the debugger, the device hard faults on reset.

uint8_t ret = BLE_STATUS_SUCCESS;
 uint16_t service_handle, dev_name_char_handle, appearance_char_handle;
 
 static uint8_t adv_data[] = {0x02, AD_TYPE_FLAGS, FLAG_BIT_LE_GENERAL_DISCOVERABLE_MODE | FLAG_BIT_BR_EDR_NOT_SUPPORTED,
 6, AD_TYPE_COMPLETE_LOCAL_NAME, 'H', 'O', 'W', 'D', 'Y'};
 
 /* Set the TX power 0 dBm */
 aci_hal_set_tx_power_level(0, 24);
 
 /* GATT Init */
 ret = aci_gatt_srv_init();
 if (ret != BLE_STATUS_SUCCESS)
 {
 PRINTF("aci_gatt_srv_init() failed: 0x%02x\r\n", ret);
 return ret;
 }
 
 /* GAP Init */
 ret = aci_gap_init(GAP_PERIPHERAL_ROLE, 0, 0x07, STATIC_RANDOM_ADDR, &service_handle, &dev_name_char_handle, &appearance_char_handle);
 if (ret != BLE_STATUS_SUCCESS)
 {
 PRINTF("aci_gap_init() failed: 0x%02x\r\n", ret);
 return ret;
 }
 
 /* Update device name */
 Gap_profile_set_dev_name(0, sizeof(device_name), device_name);
 
 ret = aci_gap_set_authentication_requirement(BONDING,
 MITM_PROTECTION_REQUIRED,
 SC_IS_NOT_SUPPORTED,
 KEYPRESS_IS_NOT_SUPPORTED,
 7,
 16,
 USE_FIXED_PIN_FOR_PAIRING,
 123456);
 if (ret != BLE_STATUS_SUCCESS)
 {
 PRINTF("aci_gap_set_authentication_requirement()failed: 0x%02x\r\n", ret);
 return ret;
 }
 
 // HARD FAULT HAPPENS HERE
 ret = aci_gap_set_advertising_configuration(0, GAP_MODE_GENERAL_DISCOVERABLE,
 ADV_PROP_CONNECTABLE | ADV_PROP_SCANNABLE | ADV_PROP_LEGACY,
 (ADV_INTERVAL_MIN_MS * 1000) / 625, (ADV_INTERVAL_MAX_MS * 1000) / 625,
 ADV_CH_ALL,
 0, NULL,
 ADV_NO_WHITE_LIST_USE,
 0, /* 0 dBm */
 LE_1M_PHY, /* Primary advertising PHY */
 0, /* 0 skips */
 LE_1M_PHY, /* Secondary advertising PHY. Not used with legacy advertising. */
 0, /* SID */
 0 /* No scan request notifications */);
 PRINTF("Advertising configuration 0x%02X\n", ret);
 
 ret = aci_gap_set_advertising_data(0, ADV_COMPLETE_DATA, sizeof(adv_data), adv_data);
 
 PRINTF("Set advertising data 0x%02X\n", ret);
 
 PRINTF("BLE Stack Initialized with SUCCESS\n");
 
 // init services here
 services_init();
 
}

On reset, without a debugger connected, I cannot get passed `aci_gap_set_advertising_configuration()`...

My config file is almost exactly like the BLE_Sensor_Demo:

My intention was to create a BLE characteristic that when written would reset the device:

/* .... */
 
/* Device information characteristic definition */
static ble_gatt_chr_def_t chars[] = {
 {/* Reset characteristic */
 .properties = BLE_GATT_SRV_CHAR_PROP_WRITE | BLE_GATT_SRV_CHAR_PROP_WRITE_NO_RESP,
 .permissions = BLE_GATT_SRV_PERM_NONE,
 .min_key_size = BLE_GATT_SRV_MAX_ENCRY_KEY_SIZE,
 .uuid = BLE_UUID_INIT_16((RESET_UUID)},
};
 
/* WOWL service definition */
static ble_gatt_srv_def_t service = {
 .type = BLE_GATT_SRV_PRIMARY_SRV_TYPE,
 .uuid = BLE_UUID_INIT_16SERVICE_UUID),
 .chrs = {
 .chrs_p = chars,
 .chr_count = 1u,
 },
};

On write to that characteristic, I simply call `NVIC_SystemReset()`. Any help appreciated.

@Sebastien DENOUAL​ @Winfred LU​ , Thoughts? What am I missing?