nrf51822, how do I use a vendor specific UUID?

Using a vendor specific UUID is basically a two-step process:

1. Add your custom base UUID to the stack by using Sd_ble_uuid_vs_add (). Store the value returned to the P_type parameter for this function call.

2. Set the type of all ble_uuid_t, should use this base to the value returned to the Sd_ble_uuid_vs_add (). When you set this field to your custom type instead from to Ble_uuid_type_ble, the value would be used on top of the custom B ASE UUID specified instead of on top of the Bluetooth SIG base.

Behind the scenes, Sd_ble_uuid_vs_add () would add the base UUID to the Softdevice ' s internal list of base UUIDs, and return The table index for this UUID is in the Type field. When using the type in a ble_uuid_t later, the Softdevice can look up the base used in this same table by using this index .

I ' ve also attached a small pseudo-code snippet that shows the essentials of this scheme.

uint32_t Sd_ble_uuid_vs_add	(	ble_uuid128_t Const *CONST	P_vs_uuid,
		uint8_t *const	P_uuid_type
	)

ADD a Vendor specific UUID.

This call enables the application to add a vendor specific UUID to the BLE stack ' s table, for later use all other modules and APIs. This-then allows the application-shorter, 24-bitble_uuid_t format when dealing with both 16-bit and 128-bit UUI Ds without has to check for lengths and has split code paths. The the-the-the-is-accomplished is by extending the grouping mechanism, the Bluetooth SIG standard base UUID uses fo R all other 128-bit UUIDs.

Parameters

[In]	P_vs_uuid	Pointer to a 16-octet (128-bit) little endian Vendor specific UUID disregarding bytes and 13.
[out]	P_uuid_type	Pointer where the Type field in ble_uuid_t corresponding to this UUID would be stored.

For example:

service_init:uint32_t Err_code;    ble_uuid_t Ble_uuid; ble_uuid128_t Nus_base_uuid = {0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xe5, 0xa9, 0xE0, 0x93, 0xf3, 0xa3, 0xb5, 0x00, 0x00, 0x40, 0        X6E};    ADD Custom base UUID Err_code = Sd_ble_uuid_vs_add (&nus_base_uuid, &p_nus->uuid_type);    if (err_code! = nrf_success) {return err_code;    }//Add Service Ble_uuid.type = p_nus->uuid_type;    Ble_uuid.uuid = Ble_uuid_nus_service;    Err_code = Sd_ble_gatts_service_add (Ble_gatts_srvc_type_primary, &ble_uuid, &p_nus->service_handle);    if (err_code! = nrf_success) {return err_code;    }...char_add:ble_uuid.type = p_nus->uuid_type;    Ble_uuid.uuid = ble_uuid_nus_rx_characteristic;                                               ... return Sd_ble_gatts_characteristic_add (P_nus->service_handle, &CHAR_MD, &attr_char_value, &p_nus->rx_handles)

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nrf51822, how do I use a vendor specific UUID?