Adding custom service with sd_ble_gatts_service_add not working

[Ameen S]

Hello,

We're using version 7.0.1 of the S140 soft device. We are making a bluetooth application where the device behaves both as a central and peripheral. In peripheral mode I can successfully advertise and be connected to. However, I can't get my custom service to be added properly. Below is my code to initialize the service which I took from the beginner's tutorial. It's nothing fancy, and I can compile it and run with with no problems or error codes from the function calls.

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#define BLE_UUID_OUR_BASE_UUID {{0x23, 0xD1, 0x13, 0xEF, 0x5F, 0x78, 0x23, 0x15, 0xDE, 0xEF, 0x12, 0x12, 0x00, 0x00, 0x00, 0x00}} // 128-bit base UUID

#define BLE_UUID_OUR_SERVICE 0xABCD // Just a random, but recognizable value

uint16_t service_handle;

uint32_t ble_peripheral_service_init(void){

uint32_t err_code; // Variable to hold return codes from library and softdevice functions

// OUR_JOB: Declare 16-bit service and 128-bit base UUIDs and add them to the BLE stack

ble_uuid_t service_uuid;

ble_uuid128_t base_uuid = BLE_UUID_OUR_BASE_UUID;

service_uuid.uuid = BLE_UUID_OUR_SERVICE;

err_code = sd_ble_uuid_vs_add(&base_uuid, &service_uuid.type);

APP_ERROR_CHECK(err_code);

// OUR_JOB: Add our service

err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,

&service_uuid,

&service_handle);

APP_ERROR_CHECK(err_code);

vlog_info("BLE Peripheral Service Initialized\r\n");

return err_code;

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

#define BLE_UUID_OUR_BASE_UUID              {{0x23, 0xD1, 0x13, 0xEF, 0x5F, 0x78, 0x23, 0x15, 0xDE, 0xEF, 0x12, 0x12, 0x00, 0x00, 0x00, 0x00}} // 128-bit base UUID
#define BLE_UUID_OUR_SERVICE                0xABCD // Just a random, but recognizable value
uint16_t    service_handle;

uint32_t ble_peripheral_service_init(void){
    uint32_t   err_code; // Variable to hold return codes from library and softdevice functions
    
    // OUR_JOB: Declare 16-bit service and 128-bit base UUIDs and add them to the BLE stack
    ble_uuid_t        service_uuid;
    ble_uuid128_t     base_uuid = BLE_UUID_OUR_BASE_UUID;
    service_uuid.uuid = BLE_UUID_OUR_SERVICE;
    err_code = sd_ble_uuid_vs_add(&base_uuid, &service_uuid.type);
    APP_ERROR_CHECK(err_code);    
    
    // OUR_JOB: Add our service
    err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
                                        &service_uuid,
                                        &service_handle);
    APP_ERROR_CHECK(err_code);
    vlog_info("BLE Peripheral Service Initialized\r\n");
    return err_code;
}

Everything runs as expected. However, my central cannot find my service during discovery. When I use NRF Connect (on both iphone and my mac), after I connect, I only see the generic services and not my service. I don't see anything that could go wrong. Am I missing something in my SDK config? Here's the relevant values. Given the lack off error codes and everything seems to run properly I don't think it's that.

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#define NRF_BLE_GATT_ENABLED 1

#define NRF_SDH_BLE_PERIPHERAL_LINK_COUNT 2

#define NRF_SDH_BLE_VS_UUID_COUNT 10

#define NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE 992

#define NRF_SDH_BLE_SERVICE_CHANGED 0

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#define NRF_BLE_GATT_ENABLED 1
#define NRF_SDH_BLE_PERIPHERAL_LINK_COUNT 2
#define NRF_SDH_BLE_VS_UUID_COUNT 10
#define NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE 992
#define NRF_SDH_BLE_SERVICE_CHANGED 0

Any help would be greatly appreciated. Thank you.