Francesco Pavoni
BLE_Nano nRF51 Central heart rate
main.c
- Committer:
- FranKP2138
- Date:
- 2016-05-26
- Revision:
- 0:2b9b5764efb5
File content as of revision 0:2b9b5764efb5:
/*
* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
*
* The information contained herein is confidential property of Nordic Semiconductor. The use,
* copying, transfer or disclosure of such information is prohibited except by express written
* agreement with Nordic Semiconductor.
*
*/
/**
* @brief BLE Heart Rate Collector application main file.
*
* This file contains the source code for a sample heart rate collector.
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf_sdm.h"
#include "ble.h"
#include "ble_hci.h"
#include "ble_db_discovery.h"
#include "softdevice_handler.h"
#include "app_util.h"
#include "app_error.h"
#include "boards.h"
#include "nrf_gpio.h"
#include "pstorage.h"
#include "device_manager.h"
#include "ble_hrs_c.h"
#include "ble_bas_c.h"
#include "app_util.h"
#include "app_timer.h"
#include "bsp.h"
#include "bsp_btn_ble.h"
#include "nrf_log.h"
#define CENTRAL_LINK_COUNT 1 /**< Number of central links used by the application. When changing this number remember to adjust the RAM settings*/
#define PERIPHERAL_LINK_COUNT 0 /**< Number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/
#define STRING_BUFFER_LEN 50
#define BOND_DELETE_ALL_BUTTON_ID 0 /**< Button used for deleting all bonded centrals during startup. */
#define APP_TIMER_PRESCALER 0 /**< Value of the RTC1 PRESCALER register. */
#define APP_TIMER_OP_QUEUE_SIZE 2 /**< Size of timer operation queues. */
#define APPL_LOG NRF_LOG_PRINTF /**< Logger macro that will be used in this file to do logging over UART or RTT based on nrf_log configuration. */
#define APPL_LOG_DEBUG NRF_LOG_PRINTF_DEBUG /**< Debug logger macro that will be used in this file to do logging of debug information over UART or RTT based on nrf_log configuration. This will only work if DEBUG is defined*/
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 1 /**< Man In The Middle protection not required. */
#define SEC_PARAM_LESC 0 /**< LE Secure Connections not enabled. */
#define SEC_PARAM_KEYPRESS 0 /**< Keypress notifications not enabled. */
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE /**< No I/O capabilities. */
#define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */
#define SCAN_INTERVAL 0x00A0 /**< Determines scan interval in units of 0.625 millisecond. */
#define SCAN_WINDOW 0x0050 /**< Determines scan window in units of 0.625 millisecond. */
#define MIN_CONNECTION_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) /**< Determines minimum connection interval in millisecond. */
#define MAX_CONNECTION_INTERVAL MSEC_TO_UNITS(30, UNIT_1_25_MS) /**< Determines maximum connection interval in millisecond. */
#define SLAVE_LATENCY 0 /**< Determines slave latency in counts of connection events. */
#define SUPERVISION_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Determines supervision time-out in units of 10 millisecond. */
#define TARGET_UUID 0x180D /**< Target device name that application is looking for. */
#define UUID16_SIZE 2 /**< Size of 16 bit UUID */
/**@breif Macro to unpack 16bit unsigned UUID from octet stream. */
#define UUID16_EXTRACT(DST, SRC) \
do \
{ \
(*(DST)) = (SRC)[1]; \
(*(DST)) <<= 8; \
(*(DST)) |= (SRC)[0]; \
} while (0)
/**@brief Variable length data encapsulation in terms of length and pointer to data */
typedef struct
{
uint8_t * p_data; /**< Pointer to data. */
uint16_t data_len; /**< Length of data. */
}data_t;
typedef enum
{
BLE_NO_SCAN, /**< No advertising running. */
BLE_WHITELIST_SCAN, /**< Advertising with whitelist. */
BLE_FAST_SCAN, /**< Fast advertising running. */
} ble_scan_mode_t;
static ble_db_discovery_t m_ble_db_discovery; /**< Structure used to identify the DB Discovery module. */
static ble_hrs_c_t m_ble_hrs_c; /**< Structure used to identify the heart rate client module. */
static ble_bas_c_t m_ble_bas_c; /**< Structure used to identify the Battery Service client module. */
static ble_gap_scan_params_t m_scan_param; /**< Scan parameters requested for scanning and connection. */
static dm_application_instance_t m_dm_app_id; /**< Application identifier. */
static dm_handle_t m_dm_device_handle; /**< Device Identifier identifier. */
static uint8_t m_peer_count = 0; /**< Number of peer's connected. */
static ble_scan_mode_t m_scan_mode = BLE_FAST_SCAN; /**< Scan mode used by application. */
static uint16_t m_conn_handle; /**< Current connection handle. */
static volatile bool m_whitelist_temporarily_disabled = false; /**< True if whitelist has been temporarily disabled. */
static bool m_memory_access_in_progress = false; /**< Flag to keep track of ongoing operations on persistent memory. */
/**
* @brief Connection parameters requested for connection.
*/
static const ble_gap_conn_params_t m_connection_param =
{
(uint16_t)MIN_CONNECTION_INTERVAL, // Minimum connection
(uint16_t)MAX_CONNECTION_INTERVAL, // Maximum connection
0, // Slave latency
(uint16_t)SUPERVISION_TIMEOUT // Supervision time-out
};
static void scan_start(void);
/**@brief Function for asserts in the SoftDevice.
*
* @details This function will be called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and does not fit a final product. You need to analyze
* how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
*
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] p_file_name File name of the failing ASSERT call.
*/
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
app_error_handler(0xDEADBEEF, line_num, p_file_name);
}
void uart_error_handle(app_uart_evt_t * p_event)
{
if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
{
APP_ERROR_HANDLER(p_event->data.error_communication);
}
else if (p_event->evt_type == APP_UART_FIFO_ERROR)
{
APP_ERROR_HANDLER(p_event->data.error_code);
}
}
/**@brief Function for handling database discovery events.
*
* @details This function is callback function to handle events from the database discovery module.
* Depending on the UUIDs that are discovered, this function should forward the events
* to their respective services.
*
* @param[in] p_event Pointer to the database discovery event.
*/
static void db_disc_handler(ble_db_discovery_evt_t * p_evt)
{
ble_hrs_on_db_disc_evt(&m_ble_hrs_c, p_evt);
ble_bas_on_db_disc_evt(&m_ble_bas_c, p_evt);
}
/**@brief Callback handling device manager events.
*
* @details This function is called to notify the application of device manager events.
*
* @param[in] p_handle Device Manager Handle. For link related events, this parameter
* identifies the peer.
* @param[in] p_event Pointer to the device manager event.
* @param[in] event_status Status of the event.
*/
static ret_code_t device_manager_event_handler(const dm_handle_t * p_handle,
const dm_event_t * p_event,
const ret_code_t event_result)
{
uint32_t err_code;
switch (p_event->event_id)
{
case DM_EVT_CONNECTION:
{
APPL_LOG_DEBUG("[APPL]: >> DM_EVT_CONNECTION\r\n");
#ifdef ENABLE_DEBUG_LOG_SUPPORT
ble_gap_addr_t * peer_addr;
peer_addr = &p_event->event_param.p_gap_param->params.connected.peer_addr;
APPL_LOG_DEBUG("[APPL]:[%02X %02X %02X %02X %02X %02X]: Connection Established\r\n",
peer_addr->addr[0], peer_addr->addr[1], peer_addr->addr[2],
peer_addr->addr[3], peer_addr->addr[4], peer_addr->addr[5]);
#endif // ENABLE_DEBUG_LOG_SUPPORT
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_event->event_param.p_gap_param->conn_handle;
m_dm_device_handle = (*p_handle);
// Initiate bonding.
err_code = dm_security_setup_req(&m_dm_device_handle);
APP_ERROR_CHECK(err_code);
m_peer_count++;
if (m_peer_count < CENTRAL_LINK_COUNT)
{
scan_start();
}
APPL_LOG_DEBUG("[APPL]: << DM_EVT_CONNECTION\r\n");
break;
}
case DM_EVT_DISCONNECTION:
{
APPL_LOG_DEBUG("[APPL]: >> DM_EVT_DISCONNECTION\r\n");
memset(&m_ble_db_discovery, 0 , sizeof (m_ble_db_discovery));
err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
if (m_peer_count == CENTRAL_LINK_COUNT)
{
scan_start();
}
m_peer_count--;
APPL_LOG_DEBUG("[APPL]: << DM_EVT_DISCONNECTION\r\n");
break;
}
case DM_EVT_SECURITY_SETUP:
{
APPL_LOG_DEBUG("[APPL]:[0x%02X] >> DM_EVT_SECURITY_SETUP\r\n", p_handle->connection_id);
// Slave securtiy request received from peer, if from a non bonded device,
// initiate security setup, else, wait for encryption to complete.
err_code = dm_security_setup_req(&m_dm_device_handle);
APP_ERROR_CHECK(err_code);
APPL_LOG_DEBUG("[APPL]:[0x%02X] << DM_EVT_SECURITY_SETUP\r\n", p_handle->connection_id);
break;
}
case DM_EVT_SECURITY_SETUP_COMPLETE:
{
APPL_LOG_DEBUG("[APPL]: >> DM_EVT_SECURITY_SETUP_COMPLETE\r\n");
APPL_LOG_DEBUG("[APPL]: << DM_EVT_SECURITY_SETUP_COMPLETE\r\n");
break;
}
case DM_EVT_LINK_SECURED:
APPL_LOG_DEBUG("[APPL]: >> DM_LINK_SECURED_IND\r\n");
// Discover peer's services.
err_code = ble_db_discovery_start(&m_ble_db_discovery,
p_event->event_param.p_gap_param->conn_handle);
APP_ERROR_CHECK(err_code);
APPL_LOG_DEBUG("[APPL]: << DM_LINK_SECURED_IND\r\n");
break;
case DM_EVT_DEVICE_CONTEXT_LOADED:
APPL_LOG_DEBUG("[APPL]: >> DM_EVT_LINK_SECURED\r\n");
APP_ERROR_CHECK(event_result);
APPL_LOG_DEBUG("[APPL]: << DM_EVT_DEVICE_CONTEXT_LOADED\r\n");
break;
case DM_EVT_DEVICE_CONTEXT_STORED:
APPL_LOG_DEBUG("[APPL]: >> DM_EVT_DEVICE_CONTEXT_STORED\r\n");
APP_ERROR_CHECK(event_result);
APPL_LOG_DEBUG("[APPL]: << DM_EVT_DEVICE_CONTEXT_STORED\r\n");
break;
case DM_EVT_DEVICE_CONTEXT_DELETED:
APPL_LOG_DEBUG("[APPL]: >> DM_EVT_DEVICE_CONTEXT_DELETED\r\n");
APP_ERROR_CHECK(event_result);
APPL_LOG_DEBUG("[APPL]: << DM_EVT_DEVICE_CONTEXT_DELETED\r\n");
break;
default:
break;
}
return NRF_SUCCESS;
}
/**
* @brief Parses advertisement data, providing length and location of the field in case
* matching data is found.
*
* @param[in] Type of data to be looked for in advertisement data.
* @param[in] Advertisement report length and pointer to report.
* @param[out] If data type requested is found in the data report, type data length and
* pointer to data will be populated here.
*
* @retval NRF_SUCCESS if the data type is found in the report.
* @retval NRF_ERROR_NOT_FOUND if the data type could not be found.
*/
static uint32_t adv_report_parse(uint8_t type, data_t * p_advdata, data_t * p_typedata)
{
uint32_t index = 0;
uint8_t * p_data;
p_data = p_advdata->p_data;
while (index < p_advdata->data_len)
{
uint8_t field_length = p_data[index];
uint8_t field_type = p_data[index+1];
if (field_type == type)
{
p_typedata->p_data = &p_data[index+2];
p_typedata->data_len = field_length-1;
return NRF_SUCCESS;
}
index += field_length + 1;
}
return NRF_ERROR_NOT_FOUND;
}
/**@brief Function for putting the chip into sleep mode.
*
* @note This function will not return.
*/
static void sleep_mode_enter(void)
{
uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
// Prepare wakeup buttons.
err_code = bsp_btn_ble_sleep_mode_prepare();
APP_ERROR_CHECK(err_code);
// Go to system-off mode (this function will not return; wakeup will cause a reset).
err_code = sd_power_system_off();
APP_ERROR_CHECK(err_code);
}
/**@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)
{
uint32_t err_code;
const ble_gap_evt_t * p_gap_evt = &p_ble_evt->evt.gap_evt;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_ADV_REPORT:
{
data_t adv_data;
data_t type_data;
// Initialize advertisement report for parsing.
adv_data.p_data = (uint8_t *)p_gap_evt->params.adv_report.data;
adv_data.data_len = p_gap_evt->params.adv_report.dlen;
err_code = adv_report_parse(BLE_GAP_AD_TYPE_16BIT_SERVICE_UUID_MORE_AVAILABLE,
&adv_data,
&type_data);
if (err_code != NRF_SUCCESS)
{
// Compare short local name in case complete name does not match.
err_code = adv_report_parse(BLE_GAP_AD_TYPE_16BIT_SERVICE_UUID_COMPLETE,
&adv_data,
&type_data);
}
// Verify if short or complete name matches target.
if (err_code == NRF_SUCCESS)
{
uint16_t extracted_uuid;
// UUIDs found, look for matching UUID
for (uint32_t u_index = 0; u_index < (type_data.data_len/UUID16_SIZE); u_index++)
{
UUID16_EXTRACT(&extracted_uuid,&type_data.p_data[u_index * UUID16_SIZE]);
APPL_LOG_DEBUG("\t[APPL]: %x\r\n",extracted_uuid);
if(extracted_uuid == TARGET_UUID)
{
// Stop scanning.
err_code = sd_ble_gap_scan_stop();
if (err_code != NRF_SUCCESS)
{
APPL_LOG_DEBUG("[APPL]: Scan stop failed, reason %d\r\n", err_code);
}
err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
m_scan_param.selective = 0;
m_scan_param.p_whitelist = NULL;
// Initiate connection.
err_code = sd_ble_gap_connect(&p_gap_evt->params.adv_report.peer_addr,
&m_scan_param,
&m_connection_param);
m_whitelist_temporarily_disabled = false;
if (err_code != NRF_SUCCESS)
{
APPL_LOG_DEBUG("[APPL]: Connection Request Failed, reason %d\r\n", err_code);
}
break;
}
}
}
break;
}
case BLE_GAP_EVT_TIMEOUT:
if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_SCAN)
{
APPL_LOG_DEBUG("[APPL]: Scan timed out.\r\n");
scan_start();
}
else if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_CONN)
{
APPL_LOG_DEBUG("[APPL]: Connection Request timed out.\r\n");
}
break;
case BLE_GAP_EVT_CONNECTED:
{
err_code = ble_hrs_c_handles_assign(&m_ble_hrs_c, p_gap_evt->conn_handle, NULL);
APP_ERROR_CHECK(err_code);
err_code = ble_bas_c_handles_assign(&m_ble_bas_c, p_gap_evt->conn_handle, NULL);
APP_ERROR_CHECK(err_code);
break;
}
case BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST:
// Accepting parameters requested by peer.
err_code = sd_ble_gap_conn_param_update(p_gap_evt->conn_handle,
&p_gap_evt->params.conn_param_update_request.conn_params);
APP_ERROR_CHECK(err_code);
break;
default:
break;
}
}
/**@brief Function for handling the Application's system events.
*
* @param[in] sys_evt system event.
*/
static void on_sys_evt(uint32_t sys_evt)
{
switch (sys_evt)
{
case NRF_EVT_FLASH_OPERATION_SUCCESS:
/* fall through */
case NRF_EVT_FLASH_OPERATION_ERROR:
if (m_memory_access_in_progress)
{
m_memory_access_in_progress = false;
scan_start();
}
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for dispatching a BLE stack event to all modules with a BLE stack event handler.
*
* @details This function is called from the scheduler in the main loop after a BLE stack event has
* been received.
*
* @param[in] p_ble_evt Bluetooth stack event.
*/
static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
{
dm_ble_evt_handler(p_ble_evt);
ble_db_discovery_on_ble_evt(&m_ble_db_discovery, p_ble_evt);
ble_hrs_c_on_ble_evt(&m_ble_hrs_c, p_ble_evt);
ble_bas_c_on_ble_evt(&m_ble_bas_c, p_ble_evt);
bsp_btn_ble_on_ble_evt(p_ble_evt);
on_ble_evt(p_ble_evt);
}
/**@brief Function for dispatching a system event to interested modules.
*
* @details This function is called from the System event interrupt handler after a system
* event has been received.
*
* @param[in] sys_evt System stack event.
*/
static void sys_evt_dispatch(uint32_t sys_evt)
{
pstorage_sys_event_handler(sys_evt);
on_sys_evt(sys_evt);
}
/**@brief Function for initializing the BLE stack.
*
* @details Initializes the SoftDevice and the BLE event interrupt.
*/
static void ble_stack_init(void)
{
uint32_t err_code;
nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
// Initialize the SoftDevice handler module.
SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);
ble_enable_params_t ble_enable_params;
err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
PERIPHERAL_LINK_COUNT,
&ble_enable_params);
APP_ERROR_CHECK(err_code);
//Check the ram settings against the used number of links
CHECK_RAM_START_ADDR(CENTRAL_LINK_COUNT,PERIPHERAL_LINK_COUNT);
// Enable BLE stack.
err_code = softdevice_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);
// Register with the SoftDevice handler module for System events.
err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for the Device Manager initialization.
*
* @param[in] erase_bonds Indicates whether bonding information should be cleared from
* persistent storage during initialization of the Device Manager.
*/
static void device_manager_init(bool erase_bonds)
{
uint32_t err_code;
dm_init_param_t init_param = {.clear_persistent_data = erase_bonds};
dm_application_param_t register_param;
err_code = pstorage_init();
APP_ERROR_CHECK(err_code);
err_code = dm_init(&init_param);
APP_ERROR_CHECK(err_code);
memset(®ister_param.sec_param, 0, sizeof (ble_gap_sec_params_t));
// Event handler to be registered with the module.
register_param.evt_handler = device_manager_event_handler;
// Service or protocol context for device manager to load, store and apply on behalf of application.
// Here set to client as application is a GATT client.
register_param.service_type = DM_PROTOCOL_CNTXT_GATT_CLI_ID;
// Secuirty parameters to be used for security procedures.
register_param.sec_param.bond = SEC_PARAM_BOND;
register_param.sec_param.mitm = SEC_PARAM_MITM;
register_param.sec_param.lesc = SEC_PARAM_LESC;
register_param.sec_param.keypress = SEC_PARAM_KEYPRESS;
register_param.sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
register_param.sec_param.oob = SEC_PARAM_OOB;
register_param.sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
register_param.sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
register_param.sec_param.kdist_peer.enc = 1;
register_param.sec_param.kdist_peer.id = 1;
err_code = dm_register(&m_dm_app_id, ®ister_param);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for disabling the use of whitelist for scanning.
*/
static void whitelist_disable(void)
{
uint32_t err_code;
if ((m_scan_mode == BLE_WHITELIST_SCAN) && !m_whitelist_temporarily_disabled)
{
m_whitelist_temporarily_disabled = true;
err_code = sd_ble_gap_scan_stop();
if (err_code == NRF_SUCCESS)
{
scan_start();
}
else if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
m_whitelist_temporarily_disabled = true;
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
void bsp_event_handler(bsp_event_t event)
{
uint32_t err_code;
switch (event)
{
case BSP_EVENT_SLEEP:
sleep_mode_enter();
break;
case BSP_EVENT_DISCONNECT:
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
case BSP_EVENT_WHITELIST_OFF:
whitelist_disable();
break;
default:
break;
}
}
/**@brief Heart Rate Collector Handler.
*/
static void hrs_c_evt_handler(ble_hrs_c_t * p_hrs_c, ble_hrs_c_evt_t * p_hrs_c_evt)
{
uint32_t err_code;
switch (p_hrs_c_evt->evt_type)
{
case BLE_HRS_C_EVT_DISCOVERY_COMPLETE:
// Heart rate service discovered. Enable notification of Heart Rate Measurement.
err_code = ble_hrs_c_hrm_notif_enable(p_hrs_c);
APP_ERROR_CHECK(err_code);
APPL_LOG_DEBUG("Heart rate service discovered \r\n");
break;
case BLE_HRS_C_EVT_HRM_NOTIFICATION:
{
APPL_LOG_DEBUG("[APPL]: HR Measurement received %d \r\n", p_hrs_c_evt->params.hrm.hr_value);
APPL_LOG("Heart Rate = %d\r\n", p_hrs_c_evt->params.hrm.hr_value);
break;
}
default:
break;
}
}
/**@brief Battery levelCollector Handler.
*/
static void bas_c_evt_handler(ble_bas_c_t * p_bas_c, ble_bas_c_evt_t * p_bas_c_evt)
{
uint32_t err_code;
switch (p_bas_c_evt->evt_type)
{
case BLE_BAS_C_EVT_DISCOVERY_COMPLETE:
// Batttery service discovered. Enable notification of Battery Level.
APPL_LOG_DEBUG("[APPL]: Battery Service discovered. \r\n");
APPL_LOG_DEBUG("[APPL]: Reading battery level. \r\n");
err_code = ble_bas_c_bl_read(p_bas_c);
APP_ERROR_CHECK(err_code);
APPL_LOG_DEBUG("[APPL]: Enabling Battery Level Notification. \r\n");
err_code = ble_bas_c_bl_notif_enable(p_bas_c);
APP_ERROR_CHECK(err_code);
break;
case BLE_BAS_C_EVT_BATT_NOTIFICATION:
{
APPL_LOG_DEBUG("[APPL]: Battery Level received %d %%\r\n", p_bas_c_evt->params.battery_level);
APPL_LOG_DEBUG("Battery = %d %%\r\n", p_bas_c_evt->params.battery_level);
break;
}
case BLE_BAS_C_EVT_BATT_READ_RESP:
{
APPL_LOG_DEBUG("[APPL]: Battery Level Read as %d %%\r\n", p_bas_c_evt->params.battery_level);
APPL_LOG_DEBUG("Battery = %d %%\r\n", p_bas_c_evt->params.battery_level);
break;
}
default:
break;
}
}
/**
* @brief Heart rate collector initialization.
*/
static void hrs_c_init(void)
{
ble_hrs_c_init_t hrs_c_init_obj;
hrs_c_init_obj.evt_handler = hrs_c_evt_handler;
uint32_t err_code = ble_hrs_c_init(&m_ble_hrs_c, &hrs_c_init_obj);
APP_ERROR_CHECK(err_code);
}
/**
* @brief Battery level collector initialization.
*/
static void bas_c_init(void)
{
ble_bas_c_init_t bas_c_init_obj;
bas_c_init_obj.evt_handler = bas_c_evt_handler;
uint32_t err_code = ble_bas_c_init(&m_ble_bas_c, &bas_c_init_obj);
APP_ERROR_CHECK(err_code);
}
/**
* @brief Database discovery collector initialization.
*/
static void db_discovery_init(void)
{
uint32_t err_code = ble_db_discovery_init(db_disc_handler);
APP_ERROR_CHECK(err_code);
}
/**@brief Function to start scanning.
*/
static void scan_start(void)
{
ble_gap_whitelist_t whitelist;
ble_gap_addr_t * p_whitelist_addr[BLE_GAP_WHITELIST_ADDR_MAX_COUNT];
ble_gap_irk_t * p_whitelist_irk[BLE_GAP_WHITELIST_IRK_MAX_COUNT];
uint32_t err_code;
uint32_t count;
// Verify if there is any flash access pending, if yes delay starting scanning until
// it's complete.
err_code = pstorage_access_status_get(&count);
APP_ERROR_CHECK(err_code);
if (count != 0)
{
m_memory_access_in_progress = true;
return;
}
// Initialize whitelist parameters.
whitelist.addr_count = BLE_GAP_WHITELIST_ADDR_MAX_COUNT;
whitelist.irk_count = 0;
whitelist.pp_addrs = p_whitelist_addr;
whitelist.pp_irks = p_whitelist_irk;
// Request creating of whitelist.
err_code = dm_whitelist_create(&m_dm_app_id,&whitelist);
APP_ERROR_CHECK(err_code);
if (((whitelist.addr_count == 0) && (whitelist.irk_count == 0)) ||
(m_scan_mode != BLE_WHITELIST_SCAN) ||
(m_whitelist_temporarily_disabled))
{
// No devices in whitelist, hence non selective performed.
m_scan_param.active = 0; // Active scanning set.
m_scan_param.selective = 0; // Selective scanning not set.
m_scan_param.interval = SCAN_INTERVAL;// Scan interval.
m_scan_param.window = SCAN_WINDOW; // Scan window.
m_scan_param.p_whitelist = NULL; // No whitelist provided.
m_scan_param.timeout = 0x0000; // No timeout.
}
else
{
// Selective scanning based on whitelist first.
m_scan_param.active = 0; // Active scanning set.
m_scan_param.selective = 1; // Selective scanning not set.
m_scan_param.interval = SCAN_INTERVAL;// Scan interval.
m_scan_param.window = SCAN_WINDOW; // Scan window.
m_scan_param.p_whitelist = &whitelist; // Provide whitelist.
m_scan_param.timeout = 0x001E; // 30 seconds timeout.
}
err_code = sd_ble_gap_scan_start(&m_scan_param);
APP_ERROR_CHECK(err_code);
err_code = bsp_indication_set(BSP_INDICATE_SCANNING);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing buttons and leds.
*
* @param[out] p_erase_bonds Will be true if the clear bonding button was pressed to wake the application up.
*/
static void buttons_leds_init(bool * p_erase_bonds)
{
bsp_event_t startup_event;
uint32_t err_code = bsp_init(BSP_INIT_LED | BSP_INIT_BUTTONS,
APP_TIMER_TICKS(100, APP_TIMER_PRESCALER),
bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}
/**@brief Function for initializing the nrf log module.
*/
static void nrf_log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT();
APP_ERROR_CHECK(err_code);
}
/** @brief Function for the Power manager.
*/
static void power_manage(void)
{
uint32_t err_code = sd_app_evt_wait();
APP_ERROR_CHECK(err_code);
}
int main(void)
{
bool erase_bonds;
// Initialize.
APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, NULL);
buttons_leds_init(&erase_bonds);
nrf_log_init();
APPL_LOG("Heart rate collector example\r\n");
ble_stack_init();
device_manager_init(erase_bonds);
db_discovery_init();
hrs_c_init();
bas_c_init();
// Start scanning for peripherals and initiate connection
// with devices that advertise Heart Rate UUID.
scan_start();
for (;; )
{
power_manage();
}
}