I'm running SDK 14.2 using FreeRTOS on a nrf52832.
When I increase NRF_SDH_BLE_GATT_MAX_MTU_SIZE to 158, the system ends up in Hard Fault.
Anyone have suggestions on where to being looking for the fault? The soft device has more than enough RAM, its actually telling me I can decrease it. I updated NRF_SDH_BLE_GAP_EVENT_LENGTH to 10, with no affect.
Any help is appreciated
I get the same issue when I increase the MTU size. It only hardfaults on a Connection, but advertises fine. Did you end up solving this?
which example is it? did you try with the same SDK?
ble_app_hrs_freertos and SDK 15
ble_app_hrs_freertos and SDK 15
ok , i need to reproduce this. Working on it.
no error or hardfault for me in the example atleast when i change the MTU size. But since you both are getting the same thing, i cannot overlook it. Can one of you give me your setup?
I also see this error with the freeRTOS example. On Connect, the connect event propagates through the system. But quickly the chip goes into Hardfault reaching the Hardfault_c_handler().
Logging shows:
<info> app: HRS FreeRTOS example started.
<debug> nrf_sdh_freertos: Enter softdevice_task.
<info> app: Fast advertising.
<info> app: Slow advertising.
<debug> nrf_ble_gatt: Requesting to update ATT MTU to 247 bytes on connection 0x0.
<debug> nrf_ble_gatt: Updating data length to 251 on connection 0x0.
<info> app: Connected
<debug> nrf_ble_gatt: Data length updated to 27 on connection 0x0.
<debug> nrf_ble_gatt: max_rx_octets: 27
<debug> nrf_ble_gatt: max_tx_octets: 27
<info> app: Data Length Event Recevied: 251
<debug> nrf_ble_gatt: ATT MTU updated to 247 bytes on connection 0x0 (response).
<info> app: Data Length Event Recevied: 251
<debug> nrf_ble_gatt: Peer on connection 0x0 requested a data length of 251 bytes.
<debug> nrf_ble_gatt: Updating data length to 251 on connection 0x0.
<debug> nrf_ble_gatt: Data length updated to 251 on connection 0x0.
<debug> nrf_ble_gatt: max_rx_octets: 251
<debug> nrf_ble_gatt: max_tx_octets: 251
<info> app: Data Length Event Recevied: 251
<error> hardfault: HARD FAULT at 0x0002E140
<error> hardfault: R0: 0x00000040 R1: 0x20008700 R2: 0x74007300 R3: 0x74007300
<error> hardfault: R12: 0xA5A5A5A5 LR: 0x0002C6F1 PSR: 0x2100020E
<error> hardfault: Cause: Data bus error (PC value stacked for the exception return points to the instruction that caused the fault).
<error> hardfault: Bus Fault Address: 0x7400730C
The Hardfault always seems to occur after Connection on a call to taskSELECT_HIGHEST_PRIORITY_TASK(); inside task.c.
My settings are: SDK15.2, MTU 247, GAP DL 251, Len evt enabled, sdk_ble_task_depth 512
It seems like the hardfault occurs shortly after the MTU handshaking after connection. I see service discovery occur just before everything blows up.
For me everything works up to GAP DL 174 and MTU 170. Beyond this causes hardfaults on connection
Here are my source files for reference. Based on the ble_apphrs_freertos. The only change I really made was trying to add MTU and DL
/**
* Copyright (c) 2014 - 2018, Nordic Semiconductor ASA
*
* 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, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, 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 Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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.
*
*/
// Board/nrf6310/ble/ble_app_hrs_rtx/main.c
/**
*
* @brief Heart Rate Service Sample Application with RTX main file.
*
* This file contains the source code for a sample application using RTX and the
* Heart Rate service (and also Battery and Device Information services).
* This application uses the @ref srvlib_conn_params module.
*/
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "app_error.h"
#include "ble.h"
#include "ble_hci.h"
#include "ble_srv_common.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_bas.h"
#include "ble_hrs.h"
#include "ble_dis.h"
#include "ble_conn_params.h"
#include "sensorsim.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_sdh_freertos.h"
#include "app_timer.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "bsp_btn_ble.h"
#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include "semphr.h"
#include "fds.h"
#include "ble_conn_state.h"
#include "nrf_drv_clock.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define DEVICE_NAME "Nordic_HRM_freeRTOS" /**< Name of device. Will be included in the advertising data. */
#define MANUFACTURER_NAME "NordicSemiconductor" /**< Manufacturer. Will be passed to Device Information Service. */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define APP_ADV_FAST_INTERVAL 64 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_FAST_DURATION 1000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define APP_ADV_SLOW_INTERVAL 1600 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_SLOW_DURATION 0 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define BATTERY_LEVEL_MEAS_INTERVAL 2000 /**< Battery level measurement interval (ms). */
#define MIN_BATTERY_LEVEL 81 /**< Minimum simulated battery level. */
#define MAX_BATTERY_LEVEL 100 /**< Maximum simulated battery level. */
#define BATTERY_LEVEL_INCREMENT 1 /**< Increment between each simulated battery level measurement. */
#define HEART_RATE_MEAS_INTERVAL 1000 /**< Heart rate measurement interval (ms). */
#define MIN_HEART_RATE 140 /**< Minimum heart rate as returned by the simulated measurement function. */
#define MAX_HEART_RATE 300 /**< Maximum heart rate as returned by the simulated measurement function. */
#define HEART_RATE_INCREMENT 10 /**< Value by which the heart rate is incremented/decremented for each call to the simulated measurement function. */
#define RR_INTERVAL_INTERVAL 300 /**< RR interval interval (ms). */
#define MIN_RR_INTERVAL 100 /**< Minimum RR interval as returned by the simulated measurement function. */
#define MAX_RR_INTERVAL 500 /**< Maximum RR interval as returned by the simulated measurement function. */
#define RR_INTERVAL_INCREMENT 1 /**< Value by which the RR interval is incremented/decremented for each call to the simulated measurement function. */
#define SENSOR_CONTACT_DETECTED_INTERVAL 5000 /**< Sensor Contact Detected toggle interval (ms). */
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(600, UNIT_1_25_MS) /**< Minimum acceptable connection interval (0.4 seconds). */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(650, UNIT_1_25_MS) /**< Maximum acceptable connection interval (0.65 second). */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory time-out (4 seconds). */
#define FIRST_CONN_PARAMS_UPDATE_DELAY 5000 /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY 30000 /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
#define SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 0 /**< 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 DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
#define OSTIMER_WAIT_FOR_QUEUE 2 /**< Number of ticks to wait for the timer queue to be ready */
BLE_BAS_DEF(m_bas); /**< Battery service instance. */
BLE_HRS_DEF(m_hrs); /**< Heart rate service instance. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
NRF_BLE_QWR_DEF(m_qwr); /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising); /**< Advertising module instance. */
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static bool m_rr_interval_enabled = true; /**< Flag for enabling and disabling the registration of new RR interval measurements (the purpose of disabling this is just to test sending HRM without RR interval data. */
static sensorsim_cfg_t m_battery_sim_cfg; /**< Battery Level sensor simulator configuration. */
static sensorsim_state_t m_battery_sim_state; /**< Battery Level sensor simulator state. */
static sensorsim_cfg_t m_heart_rate_sim_cfg; /**< Heart Rate sensor simulator configuration. */
static sensorsim_state_t m_heart_rate_sim_state; /**< Heart Rate sensor simulator state. */
static sensorsim_cfg_t m_rr_interval_sim_cfg; /**< RR Interval sensor simulator configuration. */
static sensorsim_state_t m_rr_interval_sim_state; /**< RR Interval sensor simulator state. */
static ble_uuid_t m_adv_uuids[] = /**< Universally unique service identifiers. */
{
{BLE_UUID_HEART_RATE_SERVICE, BLE_UUID_TYPE_BLE},
{BLE_UUID_BATTERY_SERVICE, BLE_UUID_TYPE_BLE},
{BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE}
};
static TimerHandle_t m_battery_timer; /**< Definition of battery timer. */
static TimerHandle_t m_heart_rate_timer; /**< Definition of heart rate timer. */
static TimerHandle_t m_rr_interval_timer; /**< Definition of RR interval timer. */
static TimerHandle_t m_sensor_contact_timer; /**< Definition of sensor contact detected timer. */
#if NRF_LOG_ENABLED
static TaskHandle_t m_logger_thread; /**< Definition of Logger thread. */
#endif
static void advertising_start(void * p_erase_bonds);
/**@brief Callback 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] 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(DEAD_BEEF, line_num, p_file_name);
}
/**@brief Function for handling Peer Manager events.
*
* @param[in] p_evt Peer Manager event.
*/
static void pm_evt_handler(pm_evt_t const * p_evt)
{
bool delete_bonds = false;
pm_handler_on_pm_evt(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id)
{
case PM_EVT_PEERS_DELETE_SUCCEEDED:
advertising_start(&delete_bonds);
break;
default:
break;
}
}
/**@brief Function for performing battery measurement and updating the Battery Level characteristic
* in Battery Service.
*/
static void battery_level_update(void)
{
ret_code_t err_code;
uint8_t battery_level;
battery_level = (uint8_t)sensorsim_measure(&m_battery_sim_state, &m_battery_sim_cfg);
err_code = ble_bas_battery_level_update(&m_bas, battery_level, BLE_CONN_HANDLE_ALL);
if ((err_code != NRF_SUCCESS) &&
(err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_BUSY) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
)
{
APP_ERROR_HANDLER(err_code);
}
}
/**@brief Function for handling the Battery measurement timer time-out.
*
* @details This function will be called each time the battery level measurement timer expires.
*
* @param[in] xTimer Handler to the timer that called this function.
* You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
*/
static void battery_level_meas_timeout_handler(TimerHandle_t xTimer)
{
UNUSED_PARAMETER(xTimer);
battery_level_update();
}
/**@brief Function for handling the Heart rate measurement timer time-out.
*
* @details This function will be called each time the heart rate measurement timer expires.
* It will exclude RR Interval data from every third measurement.
*
* @param[in] xTimer Handler to the timer that called this function.
* You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
*/
static void heart_rate_meas_timeout_handler(TimerHandle_t xTimer)
{
static uint32_t cnt = 0;
ret_code_t err_code;
uint16_t heart_rate;
UNUSED_PARAMETER(xTimer);
heart_rate = (uint16_t)sensorsim_measure(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);
cnt++;
err_code = ble_hrs_heart_rate_measurement_send(&m_hrs, heart_rate);
if ((err_code != NRF_SUCCESS) &&
(err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_BUSY) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
)
{
APP_ERROR_HANDLER(err_code);
}
// Disable RR Interval recording every third heart rate measurement.
// NOTE: An application will normally not do this. It is done here just for testing generation
// of messages without RR Interval measurements.
m_rr_interval_enabled = ((cnt % 3) != 0);
}
/**@brief Function for handling the RR interval timer time-out.
*
* @details This function will be called each time the RR interval timer expires.
*
* @param[in] xTimer Handler to the timer that called this function.
* You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
*/
static void rr_interval_timeout_handler(TimerHandle_t xTimer)
{
UNUSED_PARAMETER(xTimer);
if (m_rr_interval_enabled)
{
uint16_t rr_interval;
rr_interval = (uint16_t)sensorsim_measure(&m_rr_interval_sim_state,
&m_rr_interval_sim_cfg);
ble_hrs_rr_interval_add(&m_hrs, rr_interval);
}
}
/**@brief Function for handling the Sensor Contact Detected timer time-out.
*
* @details This function will be called each time the Sensor Contact Detected timer expires.
*
* @param[in] xTimer Handler to the timer that called this function.
* You may get identifier given to the function xTimerCreate using pvTimerGetTimerID.
*/
static void sensor_contact_detected_timeout_handler(TimerHandle_t xTimer)
{
static bool sensor_contact_detected = false;
UNUSED_PARAMETER(xTimer);
sensor_contact_detected = !sensor_contact_detected;
ble_hrs_sensor_contact_detected_update(&m_hrs, sensor_contact_detected);
}
/**@brief Function for the Timer initialization.
*
* @details Initializes the timer module. This creates and starts application timers.
*/
static void timers_init(void)
{
// Initialize timer module.
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
// Create timers.
m_battery_timer = xTimerCreate("BATT",
BATTERY_LEVEL_MEAS_INTERVAL,
pdTRUE,
NULL,
battery_level_meas_timeout_handler);
m_heart_rate_timer = xTimerCreate("HRT",
HEART_RATE_MEAS_INTERVAL,
pdTRUE,
NULL,
heart_rate_meas_timeout_handler);
m_rr_interval_timer = xTimerCreate("RRT",
RR_INTERVAL_INTERVAL,
pdTRUE,
NULL,
rr_interval_timeout_handler);
m_sensor_contact_timer = xTimerCreate("SCT",
SENSOR_CONTACT_DETECTED_INTERVAL,
pdTRUE,
NULL,
sensor_contact_detected_timeout_handler);
/* Error checking */
if ( (NULL == m_battery_timer)
|| (NULL == m_heart_rate_timer)
|| (NULL == m_rr_interval_timer)
|| (NULL == m_sensor_contact_timer) )
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
}
/**@brief Function for the GAP initialization.
*
* @details This function sets up all the necessary GAP (Generic Access Profile) parameters of the
* device including the device name, appearance, and the preferred connection parameters.
*/
static void gap_params_init(void)
{
ret_code_t err_code;
ble_gap_conn_params_t gap_conn_params;
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 *)DEVICE_NAME,
strlen(DEVICE_NAME));
APP_ERROR_CHECK(err_code);
err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_HEART_RATE_SENSOR_HEART_RATE_BELT);
APP_ERROR_CHECK(err_code);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
}
static void on_gatt_mtu_event(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
{
uint32_t new_data_length;
new_data_length = p_gatt->data_length;
NRF_LOG_INFO("Data Length Event Recevied: %d", new_data_length);
}
/**@brief Function for initializing the GATT module. */
static void gatt_init(void)
{
ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, on_gatt_mtu_event);
APP_ERROR_CHECK(err_code);
// Set Gatt MTU Max
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling Queued Write Module errors.
*
* @details A pointer to this function will be passed to each service which may need to inform the
* application about an error.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing services that will be used by the application.
*
* @details Initialize the Heart Rate, Battery and Device Information services.
*/
static void services_init(void)
{
ret_code_t err_code;
ble_hrs_init_t hrs_init;
ble_bas_init_t bas_init;
ble_dis_init_t dis_init;
nrf_ble_qwr_init_t qwr_init = {0};
uint8_t body_sensor_location;
// Initialize Queued Write Module.
qwr_init.error_handler = nrf_qwr_error_handler;
err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
APP_ERROR_CHECK(err_code);
// Initialize Heart Rate Service.
body_sensor_location = BLE_HRS_BODY_SENSOR_LOCATION_FINGER;
memset(&hrs_init, 0, sizeof(hrs_init));
hrs_init.evt_handler = NULL;
hrs_init.is_sensor_contact_supported = true;
hrs_init.p_body_sensor_location = &body_sensor_location;
// Here the sec level for the Heart Rate Service can be changed/increased.
hrs_init.hrm_cccd_wr_sec = SEC_OPEN;
hrs_init.bsl_rd_sec = SEC_OPEN;
err_code = ble_hrs_init(&m_hrs, &hrs_init);
APP_ERROR_CHECK(err_code);
// Initialize Battery Service.
memset(&bas_init, 0, sizeof(bas_init));
// Here the sec level for the Battery Service can be changed/increased.
bas_init.bl_rd_sec = SEC_OPEN;
bas_init.bl_cccd_wr_sec = SEC_OPEN;
bas_init.bl_report_rd_sec = SEC_OPEN;
bas_init.evt_handler = NULL;
bas_init.support_notification = true;
bas_init.p_report_ref = NULL;
bas_init.initial_batt_level = 100;
err_code = ble_bas_init(&m_bas, &bas_init);
APP_ERROR_CHECK(err_code);
// Initialize Device Information Service.
memset(&dis_init, 0, sizeof(dis_init));
ble_srv_ascii_to_utf8(&dis_init.manufact_name_str, (char *)MANUFACTURER_NAME);
dis_init.dis_char_rd_sec = SEC_OPEN;
err_code = ble_dis_init(&dis_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the sensor simulators. */
static void sensor_simulator_init(void)
{
m_battery_sim_cfg.min = MIN_BATTERY_LEVEL;
m_battery_sim_cfg.max = MAX_BATTERY_LEVEL;
m_battery_sim_cfg.incr = BATTERY_LEVEL_INCREMENT;
m_battery_sim_cfg.start_at_max = true;
sensorsim_init(&m_battery_sim_state, &m_battery_sim_cfg);
m_heart_rate_sim_cfg.min = MIN_HEART_RATE;
m_heart_rate_sim_cfg.max = MAX_HEART_RATE;
m_heart_rate_sim_cfg.incr = HEART_RATE_INCREMENT;
m_heart_rate_sim_cfg.start_at_max = false;
sensorsim_init(&m_heart_rate_sim_state, &m_heart_rate_sim_cfg);
m_rr_interval_sim_cfg.min = MIN_RR_INTERVAL;
m_rr_interval_sim_cfg.max = MAX_RR_INTERVAL;
m_rr_interval_sim_cfg.incr = RR_INTERVAL_INCREMENT;
m_rr_interval_sim_cfg.start_at_max = false;
sensorsim_init(&m_rr_interval_sim_state, &m_rr_interval_sim_cfg);
}
/**@brief Function for starting application timers.
* @details Timers are run after the scheduler has started.
*/
static void application_timers_start(void)
{
// Start application timers.
if (pdPASS != xTimerStart(m_battery_timer, OSTIMER_WAIT_FOR_QUEUE))
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
if (pdPASS != xTimerStart(m_heart_rate_timer, OSTIMER_WAIT_FOR_QUEUE))
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
if (pdPASS != xTimerStart(m_rr_interval_timer, OSTIMER_WAIT_FOR_QUEUE))
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
if (pdPASS != xTimerStart(m_sensor_contact_timer, OSTIMER_WAIT_FOR_QUEUE))
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
}
/**@brief Function for handling the Connection Parameters Module.
*
* @details This function will be called for all events in the Connection Parameters Module which
* are passed to the application.
* @note All this function does is to disconnect. This could have been done by simply
* setting the disconnect_on_fail config parameter, but instead we use the event
* handler mechanism to demonstrate its use.
*
* @param[in] p_evt Event received from the Connection Parameters Module.
*/
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
ret_code_t err_code;
if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
{
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
APP_ERROR_CHECK(err_code);
}
}
/**@brief Function for handling a Connection Parameters error.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void conn_params_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing the Connection Parameters module. */
static void conn_params_init(void)
{
ret_code_t err_code;
ble_conn_params_init_t cp_init;
memset(&cp_init, 0, sizeof(cp_init));
cp_init.p_conn_params = NULL;
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
cp_init.start_on_notify_cccd_handle = m_hrs.hrm_handles.cccd_handle;
cp_init.disconnect_on_fail = false;
cp_init.evt_handler = on_conn_params_evt;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for putting the chip into sleep mode.
*
* @note This function will not return.
*/
static void sleep_mode_enter(void)
{
ret_code_t err_code;
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 advertising events.
*
* @details This function will be called for advertising events which are passed to the application.
*
* @param[in] ble_adv_evt Advertising event.
*/
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
uint32_t err_code;
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
NRF_LOG_INFO("Fast advertising.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_SLOW:
NRF_LOG_INFO("Slow advertising.");
err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_IDLE:
sleep_mode_enter();
break;
default:
break;
}
}
/**@brief Function for handling BLE events.
*
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused.
*/
//@ble
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
uint32_t err_code;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected");
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected");
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
NRF_LOG_DEBUG("GATT Client Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
NRF_LOG_DEBUG("GATT Server Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for initializing the BLE stack.
*
* @details Initializes the SoftDevice and the BLE event interrupt.
*/
static void ble_stack_init(void)
{
ret_code_t err_code;
err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
// Configure the BLE stack using the default settings.
// Fetch the start address of the application RAM.
uint32_t ram_start = 0;
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
APP_ERROR_CHECK(err_code);
// Enable BLE stack.
err_code = nrf_sdh_ble_enable(&ram_start);
APP_ERROR_CHECK(err_code);
// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
static void bsp_event_handler(bsp_event_t event)
{
ret_code_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:
if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
{
err_code = ble_advertising_restart_without_whitelist(&m_advertising);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
break;
default:
break;
}
}
/**@brief Function for the Peer Manager initialization. */
static void peer_manager_init(void)
{
ble_gap_sec_params_t sec_param;
ret_code_t err_code;
err_code = pm_init();
APP_ERROR_CHECK(err_code);
memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));
// Security parameters to be used for all security procedures.
sec_param.bond = SEC_PARAM_BOND;
sec_param.mitm = SEC_PARAM_MITM;
sec_param.lesc = SEC_PARAM_LESC;
sec_param.keypress = SEC_PARAM_KEYPRESS;
sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
sec_param.oob = SEC_PARAM_OOB;
sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
sec_param.kdist_own.enc = 1;
sec_param.kdist_own.id = 1;
sec_param.kdist_peer.enc = 1;
sec_param.kdist_peer.id = 1;
err_code = pm_sec_params_set(&sec_param);
APP_ERROR_CHECK(err_code);
err_code = pm_register(pm_evt_handler);
APP_ERROR_CHECK(err_code);
}
/**@brief Clear bond information from persistent storage. */
static void delete_bonds(void)
{
ret_code_t err_code;
NRF_LOG_INFO("Erase bonds!");
err_code = pm_peers_delete();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the Advertising functionality. */
static void advertising_init(void)
{
ret_code_t err_code;
ble_advertising_init_t init;
memset(&init, 0, sizeof(init));
init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
init.advdata.include_appearance = true;
init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
init.advdata.uuids_complete.p_uuids = m_adv_uuids;
init.config.ble_adv_fast_enabled = true;
init.config.ble_adv_fast_interval = APP_ADV_FAST_INTERVAL;
init.config.ble_adv_fast_timeout = APP_ADV_FAST_DURATION;
init.config.ble_adv_slow_enabled = true;
init.config.ble_adv_slow_interval = APP_ADV_SLOW_INTERVAL;
init.config.ble_adv_slow_timeout = APP_ADV_SLOW_DURATION;
init.evt_handler = on_adv_evt;
err_code = ble_advertising_init(&m_advertising, &init);
APP_ERROR_CHECK(err_code);
ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}
/**@brief Function for initializing the nrf log module.
*/
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
/**@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)
{
ret_code_t err_code;
bsp_event_t startup_event;
err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, 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 starting advertising. */
static void advertising_start(void * p_erase_bonds)
{
bool erase_bonds = *(bool*)p_erase_bonds;
if (erase_bonds)
{
delete_bonds();
// Advertising is started by PM_EVT_PEERS_DELETE_SUCCEEDED event.
}
else
{
ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
}
static void gatt_mtu_set(uint16_t att_mtu)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, att_mtu);
APP_ERROR_CHECK(err_code);
/*err_code = nrf_ble_gatt_att_mtu_central_set(&m_gatt, att_mtu);
APP_ERROR_CHECK(err_code);*/
}
static void conn_evt_len_ext_set(bool status)
{
ret_code_t err_code;
ble_opt_t opt;
memset(&opt, 0x00, sizeof(opt));
opt.common_opt.conn_evt_ext.enable = status ? 1 : 0;
err_code = sd_ble_opt_set(BLE_COMMON_OPT_CONN_EVT_EXT, &opt);
APP_ERROR_CHECK(err_code);
}
static void data_len_set(uint8_t value)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_data_length_set(&m_gatt, BLE_CONN_HANDLE_INVALID, value);
APP_ERROR_CHECK(err_code);
}
#if NRF_LOG_ENABLED
/**@brief Thread for handling the logger.
*
* @details This thread is responsible for processing log entries if logs are deferred.
* Thread flushes all log entries and suspends. It is resumed by idle task hook.
*
* @param[in] arg Pointer used for passing some arbitrary information (context) from the
* osThreadCreate() call to the thread.
*/
static void logger_thread(void * arg)
{
UNUSED_PARAMETER(arg);
while (1)
{
NRF_LOG_FLUSH();
vTaskSuspend(NULL); // Suspend myself
}
}
#endif //NRF_LOG_ENABLED
/**@brief A function which is hooked to idle task.
* @note Idle hook must be enabled in FreeRTOS configuration (configUSE_IDLE_HOOK).
*/
void vApplicationIdleHook( void )
{
#if NRF_LOG_ENABLED
vTaskResume(m_logger_thread);
#endif
}
/**@brief Function for initializing the clock.
*/
static void clock_init(void)
{
ret_code_t err_code = nrf_drv_clock_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for application main entry.
*/
int main(void)
{
bool erase_bonds;
// Initialize modules.
log_init();
clock_init();
// Do not start any interrupt that uses system functions before system initialisation.
// The best solution is to start the OS before any other initalisation.
#if NRF_LOG_ENABLED
// Start execution.
if (pdPASS != xTaskCreate(logger_thread, "LOGGER", 256, NULL, 1, &m_logger_thread))
{
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
#endif
// Activate deep sleep mode.
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
// Configure and initialize the BLE stack.
ble_stack_init();
// Initialize modules.
timers_init();
buttons_leds_init(&erase_bonds);
gap_params_init();
gatt_init();
advertising_init();
services_init();
sensor_simulator_init();
conn_params_init();
peer_manager_init();
application_timers_start();
// Set Radio Settings
gatt_mtu_set(NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
conn_evt_len_ext_set(true);
data_len_set(NRF_SDH_BLE_GAP_DATA_LENGTH);
// Create a FreeRTOS task for the BLE stack.
// The task will run advertising_start() before entering its loop.
nrf_sdh_freertos_init(advertising_start, &erase_bonds);
NRF_LOG_INFO("HRS FreeRTOS example started.");
// Start FreeRTOS scheduler.
vTaskStartScheduler();
for (;;)
{
APP_ERROR_HANDLER(NRF_ERROR_FORBIDDEN);
}
}