nes-proj/cpu/nrf52832/ble/ble-core.c
2016-02-15 09:37:38 +01:00

239 lines
7.4 KiB
C

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