UM1870 datasheet(47/58 Pages) STMICROELECTRONICS

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UM1870

BLE remote control demo application

8.2

BLE remote control application setup

This section describes how to configure a BlueNRG-MS device to acting as a remote control

device.

8.2.1

Initialization

The BlueNRG-MS's stack must be correctly initialized before establishing a connection with

another Bluetooth LE device. This is done with two commands

• Aci_Gatt_Init()

• Aci_Gap_Init(GAP_PERIPHERAL_ROLE)

8.2.2

Define advertising data

The BLE Remote Control application advertises some 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_resp_data(sizeof(scan_resp_data),scan_resp_data);

/* Set Undirected Connectable Mode */

ret = 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 */

ret = hci_le_set_advertising_data(sizeof(adv_data),adv_data);

On the BlueNRG-MS development platform (STEVAL-IDB005V1), the temperature sensor

value is set within the adv_data variable.

8.2.3

Add service and characteristics

The BLE Remote Control service is added using the following command:

aci_gatt_add_serv(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

ret = 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);

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