239 lines
7.4 KiB
C
239 lines
7.4 KiB
C
/*
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* Copyright (c) 2015, Nordic Semiconductor
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/**
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* \addtogroup cpu
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* @{
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*
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* \addtogroup nrf52832
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* @{
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*
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* \addtogroup nrf52832-ble Bluetooth Low Energy drivers
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* @{
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*
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* \file
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* Basic BLE functions.
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* \author
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* Wojciech Bober <wojciech.bober@nordicsemi.no>
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*
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include "boards.h"
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#include "nordic_common.h"
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#include "nrf_delay.h"
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#include "nrf_sdm.h"
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#include "ble_advdata.h"
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#include "ble_srv_common.h"
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#include "ble_ipsp.h"
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#include "softdevice_handler.h"
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#include "app_error.h"
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#include "iot_defines.h"
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#include "ble-core.h"
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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#define IS_SRVC_CHANGED_CHARACT_PRESENT 1
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#define APP_ADV_TIMEOUT 0 /**< Time for which the device must be advertising in non-connectable mode (in seconds). 0 disables timeout. */
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#define APP_ADV_ADV_INTERVAL MSEC_TO_UNITS(333, UNIT_0_625_MS) /**< The advertising interval. This value can vary between 100ms to 10.24s). */
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static ble_gap_adv_params_t m_adv_params; /**< Parameters to be passed to the stack when starting advertising. */
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static void
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ble_evt_dispatch(ble_evt_t * p_ble_evt);
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Initialize and enable the BLE stack.
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*/
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void
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ble_stack_init(void)
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{
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uint32_t err_code;
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// Enable BLE stack.
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ble_enable_params_t ble_enable_params;
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memset(&ble_enable_params, 0, sizeof(ble_enable_params));
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ble_enable_params.gatts_enable_params.attr_tab_size =
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BLE_GATTS_ATTR_TAB_SIZE_DEFAULT;
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ble_enable_params.gatts_enable_params.service_changed =
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IS_SRVC_CHANGED_CHARACT_PRESENT;
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err_code = sd_ble_enable(&ble_enable_params);
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APP_ERROR_CHECK(err_code);
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// Register with the SoftDevice handler module for BLE events.
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err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
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APP_ERROR_CHECK(err_code);
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// Setup address
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ble_gap_addr_t ble_addr;
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err_code = sd_ble_gap_address_get(&ble_addr);
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APP_ERROR_CHECK(err_code);
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ble_addr.addr[5] = 0x00;
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ble_addr.addr_type = BLE_GAP_ADDR_TYPE_PUBLIC;
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err_code = sd_ble_gap_address_set(BLE_GAP_ADDR_CYCLE_MODE_NONE, &ble_addr);
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APP_ERROR_CHECK(err_code);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Return device EUI64 MAC address
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* \param addr pointer to a buffer to store the address
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*/
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void
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ble_get_mac(uint8_t addr[8])
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{
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uint32_t err_code;
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ble_gap_addr_t ble_addr;
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err_code = sd_ble_gap_address_get(&ble_addr);
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APP_ERROR_CHECK(err_code);
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IPV6_EUI64_CREATE_FROM_EUI48(addr, ble_addr.addr, ble_addr.addr_type);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Initialize BLE advertising data.
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* \param name Human readable device name that will be advertised
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*/
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void
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ble_advertising_init(const char *name)
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{
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uint32_t err_code;
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ble_advdata_t advdata;
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uint8_t flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;
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ble_gap_conn_sec_mode_t sec_mode;
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BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
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err_code = sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *)name,
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strlen(name));
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APP_ERROR_CHECK(err_code);
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ble_uuid_t adv_uuids[] = {{BLE_UUID_IPSP_SERVICE, BLE_UUID_TYPE_BLE}};
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// Build and set advertising data.
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memset(&advdata, 0, sizeof(advdata));
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advdata.name_type = BLE_ADVDATA_FULL_NAME;
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advdata.flags = flags;
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advdata.uuids_complete.uuid_cnt = sizeof(adv_uuids) / sizeof(adv_uuids[0]);
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advdata.uuids_complete.p_uuids = adv_uuids;
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err_code = ble_advdata_set(&advdata, NULL);
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APP_ERROR_CHECK(err_code);
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// Initialize advertising parameters (used when starting advertising).
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memset(&m_adv_params, 0, sizeof(m_adv_params));
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m_adv_params.type = BLE_GAP_ADV_TYPE_ADV_IND;
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m_adv_params.p_peer_addr = NULL; // Undirected advertisement.
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m_adv_params.fp = BLE_GAP_ADV_FP_ANY;
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m_adv_params.interval = APP_ADV_ADV_INTERVAL;
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m_adv_params.timeout = APP_ADV_TIMEOUT;
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Start BLE advertising.
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*/
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void
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ble_advertising_start(void)
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{
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uint32_t err_code;
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err_code = sd_ble_gap_adv_start(&m_adv_params);
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APP_ERROR_CHECK(err_code);
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PRINTF("ble-core: advertising started\n");
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Print GAP address.
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* \param addr a pointer to address
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*/
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void
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ble_gap_addr_print(const ble_gap_addr_t *addr)
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{
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unsigned int i;
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for(i = 0; i < sizeof(addr->addr); i++) {
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if(i > 0) {
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PRINTF(":");
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}PRINTF("%02x", addr->addr[i]);
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}PRINTF(" (%d)", addr->addr_type);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief Function for handling the Application's BLE Stack events.
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* \param[in] p_ble_evt Bluetooth stack event.
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*/
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static void
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on_ble_evt(ble_evt_t *p_ble_evt)
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{
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switch(p_ble_evt->header.evt_id) {
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case BLE_GAP_EVT_CONNECTED:
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PRINTF("ble-core: connected [handle:%d, peer: ", p_ble_evt->evt.gap_evt.conn_handle);
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ble_gap_addr_print(&(p_ble_evt->evt.gap_evt.params.connected.peer_addr));
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PRINTF("]\n");
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sd_ble_gap_rssi_start(p_ble_evt->evt.gap_evt.conn_handle,
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BLE_GAP_RSSI_THRESHOLD_INVALID,
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0);
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break;
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case BLE_GAP_EVT_DISCONNECTED:
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PRINTF("ble-core: disconnected [handle:%d]\n", p_ble_evt->evt.gap_evt.conn_handle);
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ble_advertising_start();
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break;
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default:
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break;
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}
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}
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/*---------------------------------------------------------------------------*/
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/**
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* \brief SoftDevice BLE event callback.
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* \param[in] p_ble_evt Bluetooth stack event.
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*/
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static void
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ble_evt_dispatch(ble_evt_t *p_ble_evt)
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{
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ble_ipsp_evt_handler(p_ble_evt);
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on_ble_evt(p_ble_evt);
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}
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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* @}
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*/
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