Heart Rate Sensor Application.

#include <asf.h>
#include "platform.h"
#include "at_ble_api.h"
#include "console_serial.h"
#include "timer_hw.h"
#include "conf_extint.h"
#include "ble_manager.h"
#include "ble_utils.h"
#include "hr_sensor_app.h"
#include "hr_sensor.h"

Macros
#define	APP_BUTTON_EVENT_ID (2)

#define	APP_INVALID_EVENT_ID (0)

#define	APP_TIMER_EVENT_ID (1)

Functions
static at_ble_status_t	app_connected_event_handler (void *params)
	connected state handler More...

static at_ble_status_t	app_disconnected_event_handler (void *params)

at_ble_status_t	app_notification_cfm_handler (void *params)
	hr_notification_confirmation_handler called by ble manager to give the status of notification sent More...

static void	app_notification_handler (uint8_t notification_enable)
	notification handler function called by the profile More...

static void	app_reset_handler (void)
	energy expended handler called by profile to reset the energy values More...

void	button_cb (void)
	Button Press Callback. More...

static void	heart_rate_value_init (void)
	heart_rate_value_init will initializes the heart rate values for simulation. More...

static void	hr_measurment_send (void)
	hr_measurment_send sends the notifications after adding the hr values heart rate values starts @60bpm increments by 1 goes upto 255 bpm and restarts @60 Energy Expended will be sent on every 10th notification,it starts @ 0 and increments by 20 rr interval values, two rr interval values will be sent in every notification More...

static at_ble_status_t	hr_sensor_app_custom_event (void *param)

int	main (void)
	Heart Rate Sensor Application main function. More...

static void	timer_callback_handler (void)
	Timer callback handler called on timer expiry. More...

Variables
uint8_t	activity = 0

volatile bool	advertisement_flag = false

user_custom_event_t	app_custom_event [2]

bool	app_exec = true

static const ble_gap_event_cb_t	app_gap_handle

static const ble_gatt_server_event_cb_t	app_gatt_server_handle

volatile bool	app_init_done = false

volatile bool	app_state = 0

volatile bool	disconnect_flag = false

uint16_t	energy_expended_val = ENERGY_EXP_NORMAL

uint8_t	energy_inclusion = 0

uint16_t	energy_incrementor

uint16_t	heart_rate_value = HEART_RATE_MIN_NORM

volatile bool	hr_initializer_flag = 1

uint8_t	hr_max_value

uint8_t	hr_min_value

static const ble_custom_event_cb_t	hr_sensor_custom_event_cb

int8_t	inc_changer = 1

volatile bool	notification_flag = false

volatile bool	notification_sent = true

uint8_t	prev_activity = DEFAULT_ACTIVITY

uint16_t	rr_interval_value = RR_VALUE_MIN

uint8_t	second_counter = 0

volatile bool	start_advertisement = 0

int8_t	time_operator

#define APP_BUTTON_EVENT_ID (2)

Referenced by hr_sensor_app_custom_event().

#define APP_INVALID_EVENT_ID (0)

#define APP_TIMER_EVENT_ID (1)

Referenced by hr_sensor_app_custom_event().

static at_ble_status_t app_connected_event_handler ( void * params )

static

connected state handler

Parameters

[in] status of the application

References advertisement_flag, ALL_UNUSED, app_state, AT_BLE_SUCCESS, DBG_LOG, and notification_sent.

static at_ble_status_t app_disconnected_event_handler ( void * params )

static

References activity, ACTIVITY_NORMAL, ALL_UNUSED, app_state, AT_BLE_SUCCESS, DBG_LOG, DEFAULT_ACTIVITY, ENERGY_EXP_NORMAL, energy_expended_val, energy_inclusion, heart_rate_value_init(), hw_timer_stop(), notification_flag, prev_activity, and second_counter.

at_ble_status_t app_notification_cfm_handler ( void * params )

hr_notification_confirmation_handler called by ble manager to give the status of notification sent

app_notification_cfm_handler called by ble manager to give the status of notification sent

Parameters

[in] at_ble_cmd_complete_event_t address of the cmd completion

References AT_BLE_SUCCESS, DBG_LOG_DEV, notification_sent, and at_ble_cmd_complete_event_t::status.

static void app_notification_handler ( uint8_t notification_enable )

static

notification handler function called by the profile

Parameters

[in] notification_enable which will tell the state of the application

References DBG_LOG, hw_timer_start(), hw_timer_stop(), notification_flag, and NOTIFICATION_INTERVAL.

Referenced by main().

static void app_reset_handler ( void )

static

energy expended handler called by profile to reset the energy values

References DBG_LOG, and energy_expended_val.

Referenced by main().

void button_cb ( void )

Button Press Callback.

References advertisement_flag, app_init_done, app_state, at_ble_event_user_defined_post(), DBG_LOG_DEV, disconnect_flag, and start_advertisement.

static void heart_rate_value_init ( void )

static

heart_rate_value_init will initializes the heart rate values for simulation.

Based on the time different heart rate values are chosen to indicate different activity.

References activity, ACTIVITY_BRISK_WALKING, ACTIVITY_FAST_RUNNING, ACTIVITY_NORMAL, ACTIVITY_RUNNING, ACTIVITY_WALKING, ENERGY_EXP_BRISK_WALKING, ENERGY_EXP_FAST_RUNNING, ENERGY_EXP_NORMAL, ENERGY_EXP_RUNNING, ENERGY_EXP_WALKING, energy_incrementor, HEART_RATE_MAX_BRISK_WALK, HEART_RATE_MAX_FAST_RUNNING, HEART_RATE_MAX_NORM, HEART_RATE_MAX_RUNNING, HEART_RATE_MAX_WALKING, HEART_RATE_MIN_BRISK_WALK, HEART_RATE_MIN_FAST_RUNNING, HEART_RATE_MIN_NORM, HEART_RATE_MIN_RUNNING, HEART_RATE_MIN_WALKING, heart_rate_value, hr_max_value, hr_min_value, inc_changer, prev_activity, and second_counter.

Referenced by app_disconnected_event_handler(), and timer_callback_handler().

static void hr_measurment_send ( void )

static

hr_measurment_send sends the notifications after adding the hr values heart rate values starts @60bpm increments by 1 goes upto 255 bpm and restarts @60 Energy Expended will be sent on every 10th notification,it starts @ 0 and increments by 20 rr interval values, two rr interval values will be sent in every notification

References activity, ACTIVITY_BRISK_WALKING, ACTIVITY_FAST_RUNNING, ACTIVITY_NORMAL, ACTIVITY_RUNNING, ACTIVITY_WALKING, DBG_LOG, DBG_LOG_CONT, ENERGY_EXPENDED_FIELD_PRESENT, energy_expended_val, energy_inclusion, energy_incrementor, ENERGY_RESET, heart_rate_value, HR_CHAR_VALUE_LEN, hr_sensor_send_notification(), inc_changer, rr_interval_value, RR_INTERVAL_VALUE_PRESENT, RR_VALUE_MAX, RR_VALUE_MIN, and second_counter.

Referenced by hr_sensor_app_custom_event().

static at_ble_status_t hr_sensor_app_custom_event ( void * param )

static

References APP_BUTTON_EVENT_ID, app_state, APP_TIMER_EVENT_ID, AT_BLE_FAILURE, AT_BLE_SUCCESS, DBG_LOG, delay_ms, disconnect_flag, hr_measurment_send(), hr_sensor_adv(), hr_sensor_disconnect(), notification_flag, notification_sent, and start_advertisement.

int main ( void )

Heart Rate Sensor Application main function.

References app_exec, app_init_done, app_notification_handler(), app_reset_handler(), BLE_CUSTOM_EVENT_TYPE, ble_device_init(), ble_event_task(), BLE_GAP_EVENT_TYPE, BLE_GATT_SERVER_EVENT_TYPE, ble_mgr_events_callback_handler(), board_init(), DBG_LOG, hr_sensor_init(), hw_timer_init(), hw_timer_register_callback(), NULL, REGISTER_CALL_BACK, register_hr_notification_handler(), register_hr_reset_handler(), serial_console_init(), system_init(), and timer_callback_handler().

static void timer_callback_handler ( void )

static

Timer callback handler called on timer expiry.

References app_init_done, at_ble_event_user_defined_post(), END_OF_LAST_ACTIVITY, heart_rate_value_init(), notification_flag, second_counter, START_OF_FIRST_ACTIVITY, and time_operator.

uint8_t activity = 0

activiy which will determine the

Referenced by app_disconnected_event_handler(), heart_rate_value_init(), and hr_measurment_send().

volatile bool advertisement_flag = false

to check if the device is in advertisement

Referenced by app_connected_event_handler(), and button_cb().

user_custom_event_t app_custom_event[2]

Initial value:

= {
    {
        .id = APP_TIMER_EVENT_ID,
        .bptr = NULL,
    },
    {
        .id = APP_BUTTON_EVENT_ID,
        .bptr = NULL
    }
}

bool app_exec = true

const ble_gap_event_cb_t app_gap_handle

static

Initial value:

= {
    .connected = app_connected_event_handler,
    .disconnected = app_disconnected_event_handler
}

const ble_gatt_server_event_cb_t app_gatt_server_handle

static

Initial value:

= {
    .notification_confirmed = app_notification_cfm_handler
}

volatile bool app_init_done = false

volatile bool app_state = 0

flag to represent the application state

volatile bool disconnect_flag = false

flag for disconnection

Referenced by button_cb(), and hr_sensor_app_custom_event().

uint16_t energy_expended_val = ENERGY_EXP_NORMAL

to count the energy expended

Referenced by app_disconnected_event_handler(), app_reset_handler(), and hr_measurment_send().

uint8_t energy_inclusion = 0

To check for including the energy in hr measurement

Referenced by app_disconnected_event_handler(), and hr_measurment_send().

uint16_t energy_incrementor

energy incrementor for various heart rate values

Referenced by heart_rate_value_init(), and hr_measurment_send().

uint16_t heart_rate_value = HEART_RATE_MIN_NORM

to count the heart rate value

Referenced by heart_rate_value_init(), and hr_measurment_send().

volatile bool hr_initializer_flag = 1

flag for initialization of hr for each category

uint8_t hr_max_value

the maximum heart rate value

Referenced by heart_rate_value_init().

uint8_t hr_min_value

the minimum heart rate value

Referenced by heart_rate_value_init().

const ble_custom_event_cb_t hr_sensor_custom_event_cb

static

Initial value:

= {
    .custom_event = hr_sensor_app_custom_event
}

int8_t inc_changer = 1

increment operator to change heart rate

Referenced by heart_rate_value_init(), and hr_measurment_send().

volatile bool notification_flag = false

flag to start notification

volatile bool notification_sent = true

uint8_t prev_activity = DEFAULT_ACTIVITY

previous activity

Referenced by app_disconnected_event_handler(), and heart_rate_value_init().

uint16_t rr_interval_value = RR_VALUE_MIN

to count the rr interval value

Referenced by hr_measurment_send().

uint8_t second_counter = 0

second_counter to count the time

Referenced by app_disconnected_event_handler(), heart_rate_value_init(), hr_measurment_send(), and timer_callback_handler().

volatile bool start_advertisement = 0

flag to start advertisement

Referenced by button_cb(), and hr_sensor_app_custom_event().

int8_t time_operator

operator to change the seconds

Referenced by timer_callback_handler().

Microchip® Advanced Software Framework

Macros

Functions

Variables