/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "sysinit/sysinit.h"
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#include "os/os.h"
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#include "console/console.h"
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#include "host/ble_hs.h"
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#include "host/util/util.h"
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#include "log/log.h"
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static uint8_t g_own_addr_type;
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static void
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ble_app_set_addr(void)
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{
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ble_addr_t addr;
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int rc;
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/* generate new non-resolvable private address */
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rc = ble_hs_id_gen_rnd(0, &addr);
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assert(rc == 0);
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/* set generated address */
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rc = ble_hs_id_set_rnd(addr.val);
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assert(rc == 0);
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}
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/* scan_event() calls scan(), so forward declaration is required */
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static void scan(void);
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/* connection has separate event handler from scan */
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static int
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conn_event(struct ble_gap_event *event, void *arg)
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{
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switch (event->type) {
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case BLE_GAP_EVENT_CONNECT:
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if (event->connect.status == 0) {
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MODLOG_DFLT(INFO,"Connection was established\n");
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ble_gap_terminate(event->connect.conn_handle, 0x13);
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} else {
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MODLOG_DFLT(INFO,"Connection failed, error code: %i\n",
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event->connect.status);
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}
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break;
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case BLE_GAP_EVENT_DISCONNECT:
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MODLOG_DFLT(INFO,"Disconnected, reason code: %i\n",
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event->disconnect.reason);
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scan();
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break;
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case BLE_GAP_EVENT_CONN_UPDATE_REQ:
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MODLOG_DFLT(INFO,"Connection update request received\n");
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break;
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case BLE_GAP_EVENT_CONN_UPDATE:
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if (event->conn_update.status == 0) {
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MODLOG_DFLT(INFO,"Connection update successful\n");
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} else {
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MODLOG_DFLT(INFO,"Connection update failed; reson: %d\n",
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event->conn_update.status);
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}
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break;
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default:
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MODLOG_DFLT(INFO,"Connection event type not supported, %d\n",
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event->type);
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break;
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}
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return 0;
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}
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static int
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scan_event(struct ble_gap_event *event, void *arg)
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{
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/* predef_uuid stores information about UUID of device,
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that we connect to */
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const ble_uuid128_t predef_uuid =
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BLE_UUID128_INIT(0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
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0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff);
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struct ble_hs_adv_fields parsed_fields;
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int uuid_cmp_result;
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memset(&parsed_fields, 0, sizeof(parsed_fields));
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switch (event->type) {
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/* advertising report has been received during discovery procedure */
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case BLE_GAP_EVENT_DISC:
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MODLOG_DFLT(INFO, "Advertising report received! Checking UUID...\n");
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ble_hs_adv_parse_fields(&parsed_fields, event->disc.data,
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event->disc.length_data);
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/* Predefined UUID is compared to recieved one;
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if doesn't fit - end procedure and go back to scanning,
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else - connect. */
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uuid_cmp_result = ble_uuid_cmp(&predef_uuid.u, &parsed_fields.uuids128->u);
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if (uuid_cmp_result) {
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MODLOG_DFLT(INFO, "UUID doesn't fit\n");
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} else {
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MODLOG_DFLT(INFO, "UUID fits, connecting...\n");
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ble_gap_disc_cancel();
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ble_gap_connect(g_own_addr_type, &(event->disc.addr), 10000,
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NULL, conn_event, NULL);
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}
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break;
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case BLE_GAP_EVENT_DISC_COMPLETE:
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MODLOG_DFLT(INFO,"Discovery completed, reason: %d\n",
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event->disc_complete.reason);
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scan();
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break;
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default:
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MODLOG_DFLT(ERROR, "Discovery event not handled\n");
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break;
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}
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return 0;
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}
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static void
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scan(void)
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{
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int rc;
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/* set scan parameters:
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- scan interval in 0.625ms units
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- scan window in 0.625ms units
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- filter policy - 0 if whitelisting not used
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- limited - should limited discovery be used
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- passive - should passive scan be used
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- filter duplicates - 1 enables filtering duplicated advertisements */
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const struct ble_gap_disc_params scan_params = {10000, 200, 0, 0, 0, 1};
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/* performs discovery procedure */
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rc = ble_gap_disc(g_own_addr_type, 10000, &scan_params,scan_event, NULL);
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assert(rc == 0);
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}
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static void
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on_sync(void)
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{
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int rc;
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/* Generate a non-resolvable private address. */
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ble_app_set_addr();
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/* g_own_addr_type will store type of addres our BSP uses */
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rc = ble_hs_util_ensure_addr(0);
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rc = ble_hs_id_infer_auto(0, &g_own_addr_type);
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assert(rc == 0);
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/* begin scanning */
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scan();
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}
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static void
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on_reset(int reason)
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{
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console_printf("Resetting state; reason=%d\n", reason);
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}
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int
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main(int argc, char **argv)
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{
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/* Initialize all packages. */
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sysinit();
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ble_hs_cfg.sync_cb = on_sync;
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ble_hs_cfg.reset_cb = on_reset;
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/* As the last thing, process events from default event queue. */
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while (1) {
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os_eventq_run(os_eventq_dflt_get());
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}
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return 0;
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}
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