PM0237 datasheet(56/88 Pages) STMICROELECTRONICS

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Design an application using BlueNRG, BlueNRG-MS ACI APIs

PM0237

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DocID027104 Rev 2

3.4.1

Set discoverable mode & use direct connection establishment

procedure

The following pseudocode example illustrates only the specific steps to be followed for

putting a GAP Peripheral device in general discoverable mode, and for a GAP central

device to direct connect to it through a direct connection establishment procedure.

/* GAP Peripheral:

general discoverable mode (and no scan response is sent)

Note:

Note: It is assumed that the device public address has been set during the initialization

phase as follows:

uint8_t bdaddr[] = {0x12, 0x34, 0x00, 0xE1, 0x80, 0x02};

ret=aci_hal_write_config_data(CONFIG_DATA_PUBADDR_OFFSET,CONFIG_DATA_PUBAD

DR_LEN, bdaddr);

if (ret != BLE_STATUS_SUCCESS) PRINTF("Failure.\n")}

void GAP_Peripheral_Make_Discoverable(void )

{

tBleStatus ret;

const char local_name[]=

{AD_TYPE_COMPLETE_LOCAL_NAME,'B','l','u','e','N','R','G','_','T','e','s','

t'};

/* disable scan response: passive scan */

hci_le_set_scan_resp_data(0,NULL);

/* Put the GAP peripheral in general discoverable mode:

Advertising_Event_Type: ADV_IND (undirected scannable and connectable);

Adv_Interval_Min: 0;

Adv_Interval_Max: 0;

Address_Type: PUBLIC_ADDR (public address: 0x00);

aci_gap_start_selective_conn_establishment()

It starts a selective connection establishment

procedure. The GAP adds the specified device

addresses into white list and enables scanning

in the controller with the scanner filter policy set

to “accept packets only from devices in

whitelist”. All the devices found are sent to the

upper layer by the event

EVT_BLUE_GAP_DEVICE_FOUND on

BlueNRG device and

EVT_LE_ADVERTISING_REPORT on

BlueNRG-MS device.

aci_gap_terminate_gap_procedure()

Terminate the specified GAP procedure.

Table 36. ACI: connection procedures APIs (continued)

ACI API

Description

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