UM2071 datasheet(33/56 Pages) STMICROELECTRONICS

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UM2071

BlueNRG-1 remote control demo application

DocID029370 Rev 3

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9.1.2

Define advertising data

The BLE remote control application advertises certain manufacturing data as follows:

/* Set advertising device name as Node */

const uint8_t scan_resp_data[] = {0x05,AD_TYPE_COMPLETE_LOCAL_NAME,'N','o','d','e'}

/* Set scan response data */

hci_le_set_scan_response_data(sizeof(scan_resp_data),scan_resp_data);

/* Set Undirected Connectable Mode */

aci_gap_set_discoverable(ADV_IND, (ADV_INTERVAL_MIN_MS*1000)/625,

(ADV_INTERVAL_MAX_MS*1000)/625, PUBLIC_ADDR, NO_WHITE_LIST_USE, 0, NULL, 0, NULL, 0,

0);

/* Set advertising data */

hci_le_set_advertising_data(sizeof(adv_data),adv_data);

On the BlueNRG-1 development platform (STEVAL-IDB007V1), the temperature sensor

value is set in the adv_data variable.

9.1.3

Add service and characteristics

The BLE Remote Control service is added via:

aci_gatt_add_service(UUID_TYPE_128, &service_uuid, PRIMARY_SERVICE, 7,

&RCServHandle);

Where service_uuid is the private service 128-bit UUID allocated for the BLE remote

service (ed0ef62e-9b0d-11e4-89d3-123b93f75cba).

The command returns the service handle in RCServHandle.

The BLE remote control characteristic is added using the following command:

#if ENABLE_SECURITY

aci_gatt_add_char(RCServHandle, UUID_TYPE_128, &controlPointUuid, 1,

CHAR_PROP_READ|CHAR_PROP_WRITE|CHAR_PROP_WRITE_WITHOUT_RESP|CH AR_PROP_SIGNED_WRITE,

ATTR_PERMISSION_AUTHEN_READ|ATTR_PERMISSION_AUTHEN_WRITE,

GATT_NOTIFY_ATTRIBUTE_WRITE,16,1,&controlPointHandle);

#else

aci_gatt_add_char(RCServHandle, UUID_TYPE_128, &controlPointUuid, 1,

CHAR_PROP_READ|CHAR_PROP_WRITE|CHAR_PROP_WRITE_WITHOUT_RESP, ATTR_PERMISSION_NONE,

GATT_NOTIFY_ATTRIBUTE_WRITE, 16, 1,&controlPointHandle);

#endif

Where controlPointUuid is the private characteristic 128-bit UUID allocated for BLE

remote control characteristic (ed0efb1a-9b0d-11e4-89d3-123b93f75cba) and

controlPointHandle is the BLE remote control characteristic handle.

If security is enabled, the characteristic properties must be set accordingly to enable

authentication on controlPointUuid characteristic read and write.

9.1.4

Connection with a BLE Central device

When connected to a BLE central device (another BlueNRG-1 device or any Bluetooth®

smart ready device), the controlPointUuid characteristic is used to control the BLE

remote control platform LED. Each time a write operation is performed on

controlPointUuid, the aci_gatt_attribute_modified_event() callback is

raised and the selected LEDs are turned on or off.

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