Hi,
I followed this tutorial (https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/merging-two-ble-examples-together) of combining UART example with other example with the other example in my case being the relay one.I am getting a set of errors while running the code.How should i solve this problem.
Please find the attached screenshot and the code.
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* Copyright (c) 2014 - 2019, Nordic Semiconductor ASA
*
* All rights reserved.
*
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* software without specific prior written permission.
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*/
/**
* @brief BLE Heart Rate and Running Speed relay application main file.
*
* @detail This application demonstrates a simple relay, which passes on the values it receives.
* By combining a collector part on one end and a sensor part on the other,
* the s130 can function simultaneously as a central and a peripheral device.
*
* The following figure shows how the sensor ble_app_hrs connects and interacts with the relay
* in the same manner it would connect to a Heart Rate Collector. In this case, the relay
* application acts as a central.
*
* On the other side, a collector (such as Master Control Panel or ble_app_hrs_c) connects
* and interacts with the relay in the same manner it would connect to a heart rate sensor peripheral.
*
* LED layout:
* LED 1: Central side is scanning. LED 2: Central side is connected to a peripheral.
* LED 3: Peripheral side is advertising. LED 4: Peripheral side is connected to a central.
*
* @note While testing, make sure that the Sensor and Collector are actually connecting to the relay,
* and not directly to each other!
*
* Peripheral Relay Central
* +--------+ +-----------|----------+ +-----------+
* | Heart | | Heart | Heart | | |
* | Rate | -----> | Rate -|-> Rate | -----> | Collector |
* | Sensor | | Collector | Sensor | | |
* +--------+ +-----------| and | +-----------+
* | Running | Running|
* +--------+ | Speed -|-> Speed |
* | Running|------> | Collector | Sensor |
* | Speed | +-----------|----------+
* | Sensor |
* +--------+
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "app_timer.h"
#include "bsp_btn_ble.h"
#include "ble.h"
#include "ble_nus.h"
#include "ble_err.h"
#include "ble_hci.h"
#include "app_error.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "ble_db_discovery.h"
#include "ble_hrs.h"
#include "ble_rscs.h"
#include "ble_hrs_c.h"
#include "ble_rscs_c.h"
#include "ble_conn_state.h"
#include "nrf_fstorage.h"
#include "fds.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_ble_scan.h"
#include "app_uart.h"
#include "nrf_uart.h" //or #include "nrf_uarte.h" to use EasyDMA
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define PERIPHERAL_ADVERTISING_LED BSP_BOARD_LED_2
#define PERIPHERAL_CONNECTED_LED BSP_BOARD_LED_3
#define CENTRAL_SCANNING_LED BSP_BOARD_LED_0
#define CENTRAL_CONNECTED_LED BSP_BOARD_LED_1
#define DEVICE_NAME "nRF Relay" /**< Name of device used for advertising. */
#define MANUFACTURER_NAME "NordicSemiconductor" /**< Manufacturer. Passed to Device Information Service. */
#define APP_ADV_INTERVAL 300 /**< The advertising interval (in units of 0.625 ms). This value corresponds to 187.5 ms. */
#define UART_TX_BUF_SIZE 256
#define UART_RX_BUF_SIZE 256
#define APP_ADV_DURATION 18000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define APP_BLE_CONN_CFG_TAG 1 /**< Tag that identifies the SoftDevice BLE configuration. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to the first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(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 in octets. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size in octets. */
#define HART_RATE_SERVICE_UUID_IDX 0 /**< Hart Rate service UUID index in array. */
#define RSCS_SERVICE_UUID_IDX 1 /**< RSCS service UUID index in array. */
/**@brief Priority of the application BLE event handler.
* @note You shouldn't need to modify this value.
*/
#define APP_BLE_OBSERVER_PRIO 3
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN
static ble_hrs_t m_hrs; /**< Heart Rate Service instance. */
static ble_rscs_t m_rscs; /**< Running Speed and Cadence Service instance. */
static ble_hrs_c_t m_hrs_c; /**< Heart Rate Service client instance. */
static ble_rscs_c_t m_rscs_c; /**< Running Speed and Cadence Service client instance. */
static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3;
BLE_NUS_DEF(m_nus, NRF_SDH_BLE_TOTAL_LINK_COUNT);
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
NRF_BLE_QWRS_DEF(m_qwr, NRF_SDH_BLE_TOTAL_LINK_COUNT); /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising); /**< Advertising module instance. */
BLE_DB_DISCOVERY_ARRAY_DEF(m_db_discovery, 2); /**< Database discovery module instances. */
NRF_BLE_SCAN_DEF(m_scan); /**< Scanning module instance. */
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static uint16_t m_conn_handle_hrs_c = BLE_CONN_HANDLE_INVALID; /**< Connection handle for the HRS central application */
static uint16_t m_conn_handle_rscs_c = BLE_CONN_HANDLE_INVALID; /**< Connection handle for the RSC central application */
/**@brief Names that the central application scans for, and that are advertised by the peripherals.
* If these are set to empty strings, the UUIDs defined below are used.
*/
static char const m_target_periph_name[] = "Wagon_Master";
//#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN
/**@brief UUIDs that the central application scans for if the name above is set to an empty string,
* and that are to be advertised by the peripherals.
*/
static ble_uuid_t m_adv_uuids[] =
{
{BLE_UUID_HEART_RATE_SERVICE, BLE_UUID_TYPE_BLE},
{BLE_UUID_RUNNING_SPEED_AND_CADENCE, BLE_UUID_TYPE_BLE}
};
static ble_uuid_t m_sr_uuids[] =
{
{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE},
};
static ble_gap_scan_params_t m_scan_param = /**< Scan parameters requested for scanning and connection. */
{
.active = 0x01,
.interval = NRF_BLE_SCAN_SCAN_INTERVAL,
.window = NRF_BLE_SCAN_SCAN_WINDOW,
.filter_policy = BLE_GAP_SCAN_FP_ACCEPT_ALL,
.timeout = NRF_BLE_SCAN_SCAN_DURATION,
.scan_phys = BLE_GAP_PHY_1MBPS,
.extended = true,
};
/**@brief Function for handling asserts in the SoftDevice.
*
* @details This function is called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and is not meant for the 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);
}
/**@brief Function for handling errors from the Connection Parameters module.
*
* @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);
}
static void scan_evt_handler(scan_evt_t const * p_scan_evt)
{
ret_code_t err_code;
ble_gap_evt_adv_report_t const * p_adv =
p_scan_evt->params.filter_match.p_adv_report;
ble_gap_scan_params_t const * p_scan_param =
p_scan_evt->p_scan_params;
switch(p_scan_evt->scan_evt_id)
{
case NRF_BLE_SCAN_EVT_FILTER_MATCH:
{
// Initiate connection.
err_code = sd_ble_gap_connect(&p_adv->peer_addr,
p_scan_param,
&m_scan.conn_params,
APP_BLE_CONN_CFG_TAG);
APP_ERROR_CHECK(err_code);
} break;
default:
break;
}
}
/**@brief Function for initialization the scanning and setting the filters.
*/
static void scan_init(void)
{
ret_code_t err_code;
nrf_ble_scan_init_t init_scan;
memset(&init_scan, 0, sizeof(init_scan));
init_scan.p_scan_param = &m_scan_param;
err_code = nrf_ble_scan_init(&m_scan, &init_scan, scan_evt_handler);
APP_ERROR_CHECK(err_code);
if (strlen(m_target_periph_name) != 0)
{
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_NAME_FILTER,
m_target_periph_name);
APP_ERROR_CHECK(err_code);
}
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&m_adv_uuids[HART_RATE_SERVICE_UUID_IDX]);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&m_adv_uuids[RSCS_SERVICE_UUID_IDX]);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_scan_filters_enable(&m_scan,
NRF_BLE_SCAN_ALL_FILTER,
false);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the scanning.
*/
static void scan_start(void)
{
ret_code_t err_code;
err_code = nrf_ble_scan_start(&m_scan);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the advertising and the scanning.
*/
static void adv_scan_start(void)
{
ret_code_t err_code;
//check if there are no flash operations in progress
if (!nrf_fstorage_is_busy(NULL))
{
// Start scanning for peripherals and initiate connection to devices which
// advertise Heart Rate or Running speed and cadence UUIDs.
scan_start();
// Turn on the LED to signal scanning.
bsp_board_led_on(CENTRAL_SCANNING_LED);
// Start advertising.
err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
}
/**@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)
{
pm_handler_on_pm_evt(p_evt);
pm_handler_disconnect_on_sec_failure(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id)
{
case PM_EVT_PEERS_DELETE_SUCCEEDED:
adv_scan_start();
break;
default:
break;
}
}
/**@brief Function for changing filter settings after establishing the connection.
*/
static void filter_settings_change(void)
{
ret_code_t err_code;
err_code = nrf_ble_scan_all_filter_remove(&m_scan);
APP_ERROR_CHECK(err_code);
if (strlen(m_target_periph_name) != 0)
{
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_NAME_FILTER,
m_target_periph_name);
APP_ERROR_CHECK(err_code);
}
if ((m_conn_handle_hrs_c != BLE_CONN_HANDLE_INVALID) &&
(m_conn_handle_rscs_c == BLE_CONN_HANDLE_INVALID))
{
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&m_adv_uuids[RSCS_SERVICE_UUID_IDX]);
}
if ((m_conn_handle_rscs_c != BLE_CONN_HANDLE_INVALID) &&
m_conn_handle_hrs_c == BLE_CONN_HANDLE_INVALID)
{
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&m_adv_uuids[HART_RATE_SERVICE_UUID_IDX]);
}
APP_ERROR_CHECK(err_code);
}
/**@brief Handles events coming from the Heart Rate central module.
*/
static void hrs_c_evt_handler(ble_hrs_c_t * p_hrs_c, ble_hrs_c_evt_t * p_hrs_c_evt)
{
switch (p_hrs_c_evt->evt_type)
{
case BLE_HRS_C_EVT_DISCOVERY_COMPLETE:
{
if (m_conn_handle_hrs_c == BLE_CONN_HANDLE_INVALID)
{
ret_code_t err_code;
m_conn_handle_hrs_c = p_hrs_c_evt->conn_handle;
NRF_LOG_INFO("HRS discovered on conn_handle 0x%x", m_conn_handle_hrs_c);
filter_settings_change();
err_code = ble_hrs_c_handles_assign(p_hrs_c,
m_conn_handle_hrs_c,
&p_hrs_c_evt->params.peer_db);
APP_ERROR_CHECK(err_code);
// Initiate bonding.
err_code = pm_conn_secure(m_conn_handle_hrs_c, false);
if (err_code != NRF_ERROR_BUSY)
{
APP_ERROR_CHECK(err_code);
}
// 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);
}
} break; // BLE_HRS_C_EVT_DISCOVERY_COMPLETE
case BLE_HRS_C_EVT_HRM_NOTIFICATION:
{
ret_code_t err_code;
NRF_LOG_INFO("Heart Rate = %d", p_hrs_c_evt->params.hrm.hr_value);
err_code = ble_hrs_heart_rate_measurement_send(&m_hrs, p_hrs_c_evt->params.hrm.hr_value);
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);
}
} break; // BLE_HRS_C_EVT_HRM_NOTIFICATION
default:
// No implementation needed.
break;
}
}
/**@brief Handles events coming from Running Speed and Cadence central module.
*/
static void rscs_c_evt_handler(ble_rscs_c_t * p_rscs_c, ble_rscs_c_evt_t * p_rscs_c_evt)
{
switch (p_rscs_c_evt->evt_type)
{
case BLE_RSCS_C_EVT_DISCOVERY_COMPLETE:
{
if (m_conn_handle_rscs_c == BLE_CONN_HANDLE_INVALID)
{
ret_code_t err_code;
m_conn_handle_rscs_c = p_rscs_c_evt->conn_handle;
NRF_LOG_INFO("Running Speed and Cadence service discovered on conn_handle 0x%x",
m_conn_handle_rscs_c);
filter_settings_change();
err_code = ble_rscs_c_handles_assign(p_rscs_c,
m_conn_handle_rscs_c,
&p_rscs_c_evt->params.rscs_db);
APP_ERROR_CHECK(err_code);
// Initiate bonding.
err_code = pm_conn_secure(m_conn_handle_rscs_c, false);
if (err_code != NRF_ERROR_BUSY)
{
APP_ERROR_CHECK(err_code);
}
// Running Speed Cadence Service discovered. Enable notifications.
err_code = ble_rscs_c_rsc_notif_enable(p_rscs_c);
APP_ERROR_CHECK(err_code);
}
} break; // BLE_RSCS_C_EVT_DISCOVERY_COMPLETE:
case BLE_RSCS_C_EVT_RSC_NOTIFICATION:
{
ret_code_t err_code;
ble_rscs_meas_t rscs_measurment;
NRF_LOG_INFO("Speed = %d", p_rscs_c_evt->params.rsc.inst_speed);
rscs_measurment.is_running = p_rscs_c_evt->params.rsc.is_running;
rscs_measurment.is_inst_stride_len_present = p_rscs_c_evt->params.rsc.is_inst_stride_len_present;
rscs_measurment.is_total_distance_present = p_rscs_c_evt->params.rsc.is_total_distance_present;
rscs_measurment.inst_stride_length = p_rscs_c_evt->params.rsc.inst_stride_length;
rscs_measurment.inst_cadence = p_rscs_c_evt->params.rsc.inst_cadence;
rscs_measurment.inst_speed = p_rscs_c_evt->params.rsc.inst_speed;
rscs_measurment.total_distance = p_rscs_c_evt->params.rsc.total_distance;
err_code = ble_rscs_measurement_send(&m_rscs, &rscs_measurment);
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);
}
} break; // BLE_RSCS_C_EVT_RSC_NOTIFICATION
default:
// No implementation needed.
break;
}
}
/**@brief Function for assigning new connection handle to available instance of QWR module.
*
* @param[in] conn_handle New connection handle.
*/
static void multi_qwr_conn_handle_assign(uint16_t conn_handle)
{
for (uint32_t i = 0; i < NRF_SDH_BLE_TOTAL_LINK_COUNT; i++)
{
if (m_qwr[i].conn_handle == BLE_CONN_HANDLE_INVALID)
{
ret_code_t err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr[i], conn_handle);
APP_ERROR_CHECK(err_code);
break;
}
}
}
/**@brief Function for handling BLE events from the central application.
*
* @details This function parses scanning reports and initiates a connection to peripherals when a
* target UUID is found. It updates the status of LEDs used to report the central application
* activity.
*
* @param[in] p_ble_evt Bluetooth stack event.
*/
static void on_ble_central_evt(ble_evt_t const * p_ble_evt)
{
ret_code_t err_code;
ble_gap_evt_t const * p_gap_evt = &p_ble_evt->evt.gap_evt;
switch (p_ble_evt->header.evt_id)
{
// Upon connection, check which peripheral is connected (HR or RSC), initiate DB
// discovery, update LEDs status, and resume scanning, if necessary.
case BLE_GAP_EVT_CONNECTED:
{
NRF_LOG_INFO("Central connected");
// If no Heart Rate sensor or RSC sensor is currently connected, try to find them on this peripheral.
if ( (m_conn_handle_hrs_c == BLE_CONN_HANDLE_INVALID)
|| (m_conn_handle_rscs_c == BLE_CONN_HANDLE_INVALID))
{
NRF_LOG_INFO("Attempt to find HRS or RSC on conn_handle 0x%x", p_gap_evt->conn_handle);
err_code = ble_db_discovery_start(&m_db_discovery[0], p_gap_evt->conn_handle);
if (err_code == NRF_ERROR_BUSY)
{
err_code = ble_db_discovery_start(&m_db_discovery[1], p_gap_evt->conn_handle);
APP_ERROR_CHECK(err_code);
}
else
{
APP_ERROR_CHECK(err_code);
}
}
// Assign connection handle to the QWR module.
multi_qwr_conn_handle_assign(p_gap_evt->conn_handle);
// Update LEDs status, and check whether to look for more peripherals to connect to.
bsp_board_led_on(CENTRAL_CONNECTED_LED);
if (ble_conn_state_central_conn_count() == NRF_SDH_BLE_CENTRAL_LINK_COUNT)
{
bsp_board_led_off(CENTRAL_SCANNING_LED);
}
else
{
// Resume scanning.
bsp_board_led_on(CENTRAL_SCANNING_LED);
scan_start();
}
} break; // BLE_GAP_EVT_CONNECTED
// Upon disconnection, reset the connection handle of the peer that disconnected,
// update the LEDs status and start scanning again.
case BLE_GAP_EVT_DISCONNECTED:
{
if (p_gap_evt->conn_handle == m_conn_handle_hrs_c)
{
NRF_LOG_INFO("HRS central disconnected (reason: %d)",
p_gap_evt->params.disconnected.reason);
m_conn_handle_hrs_c = BLE_CONN_HANDLE_INVALID;
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&m_adv_uuids[HART_RATE_SERVICE_UUID_IDX]);
APP_ERROR_CHECK(err_code);
}
if (p_gap_evt->conn_handle == m_conn_handle_rscs_c)
{
NRF_LOG_INFO("RSC central disconnected (reason: %d)",
p_gap_evt->params.disconnected.reason);
m_conn_handle_rscs_c = BLE_CONN_HANDLE_INVALID;
err_code = nrf_ble_scan_filter_set(&m_scan,
SCAN_UUID_FILTER,
&m_adv_uuids[RSCS_SERVICE_UUID_IDX]);
APP_ERROR_CHECK(err_code);
}
if ( (m_conn_handle_rscs_c == BLE_CONN_HANDLE_INVALID)
|| (m_conn_handle_hrs_c == BLE_CONN_HANDLE_INVALID))
{
// Start scanning.
scan_start();
// Update LEDs status.
bsp_board_led_on(CENTRAL_SCANNING_LED);
}
if (ble_conn_state_central_conn_count() == 0)
{
bsp_board_led_off(CENTRAL_CONNECTED_LED);
}
} break; // BLE_GAP_EVT_DISCONNECTED
case BLE_GAP_EVT_TIMEOUT:
{
// No timeout for scanning is specified, so only connection attemps can timeout.
if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_CONN)
{
NRF_LOG_INFO("Connection Request timed out.");
}
} break;
case BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST:
{
// Accept 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;
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 handling BLE events from peripheral applications.
* @details Updates the status LEDs used to report the activity of the peripheral applications.
*
* @param[in] p_ble_evt Bluetooth stack event.
*/
static void on_ble_peripheral_evt(ble_evt_t const * p_ble_evt)
{
ret_code_t err_code;
ble_gap_evt_t const * p_gap_evt = &p_ble_evt->evt.gap_evt;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Peripheral connected");
bsp_board_led_off(PERIPHERAL_ADVERTISING_LED);
bsp_board_led_on(PERIPHERAL_CONNECTED_LED);
// Assign connection handle to the QWR module.
multi_qwr_conn_handle_assign(p_ble_evt->evt.gap_evt.conn_handle);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Peripheral disconnected. conn_handle: 0x%x, reason: 0x%x",
p_gap_evt->conn_handle,
p_gap_evt->params.disconnected.reason);
bsp_board_led_off(PERIPHERAL_CONNECTED_LED);
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 handling advertising events.
*
* @param[in] ble_adv_evt Advertising event.
*/
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
{
NRF_LOG_INFO("Fast advertising.");
bsp_board_led_on(PERIPHERAL_ADVERTISING_LED);
} break;
case BLE_ADV_EVT_IDLE:
{
ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
} break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for checking whether a bluetooth stack event is an advertising timeout.
*
* @param[in] p_ble_evt Bluetooth stack event.
*/
static bool ble_evt_is_advertising_timeout(ble_evt_t const * p_ble_evt)
{
return (p_ble_evt->header.evt_id == BLE_GAP_EVT_ADV_SET_TERMINATED);
}
/**@brief Function for handling BLE events.
*
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused.
*/
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
uint16_t conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
uint16_t role = ble_conn_state_role(conn_handle);
// Based on the role this device plays in the connection, dispatch to the right handler.
if (role == BLE_GAP_ROLE_PERIPH || ble_evt_is_advertising_timeout(p_ble_evt))
{
ble_hrs_on_ble_evt(p_ble_evt, &m_hrs);
ble_rscs_on_ble_evt(p_ble_evt, &m_rscs);
on_ble_peripheral_evt(p_ble_evt);
}
else if ((role == BLE_GAP_ROLE_CENTRAL) || (p_ble_evt->header.evt_id == BLE_GAP_EVT_ADV_REPORT))
{
ble_hrs_c_on_ble_evt(p_ble_evt, &m_hrs_c);
ble_rscs_c_on_ble_evt(p_ble_evt, &m_rscs_c);
on_ble_central_evt(p_ble_evt);
}
}
/**@brief Heart Rate Collector initialization.
*/
static void hrs_c_init(void)
{
ret_code_t err_code;
ble_hrs_c_init_t hrs_c_init_obj;
hrs_c_init_obj.evt_handler = hrs_c_evt_handler;
err_code = ble_hrs_c_init(&m_hrs_c, &hrs_c_init_obj);
APP_ERROR_CHECK(err_code);
}
/**@brief RSC collector initialization.
*/
static void rscs_c_init(void)
{
ret_code_t err_code;
ble_rscs_c_init_t rscs_c_init_obj;
rscs_c_init_obj.evt_handler = rscs_c_evt_handler;
err_code = ble_rscs_c_init(&m_rscs_c, &rscs_c_init_obj);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the BLE stack.
*
* @details Initializes the SoftDevice and the BLE event interrupts.
*/
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 initializing the Peer Manager.
*/
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 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, NULL);
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 GAP.
*
* @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);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = m_scan.conn_params.min_conn_interval;
gap_conn_params.max_conn_interval = m_scan.conn_params.max_conn_interval;
gap_conn_params.slave_latency = m_scan.conn_params.slave_latency;
gap_conn_params.conn_sup_timeout = m_scan.conn_params.conn_sup_timeout;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the GATT module.
*/
/**static void gatt_init(void)
{
ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL);
APP_ERROR_CHECK(err_code);
}*/
void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
{
if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED))
{
m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
NRF_LOG_INFO("Data len is set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
}
NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
p_gatt->att_mtu_desired_central,
p_gatt->att_mtu_desired_periph);
}
void gatt_init(void)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
APP_ERROR_CHECK(err_code);
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 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 = BLE_CONN_HANDLE_INVALID; // Start upon connection.
cp_init.disconnect_on_fail = true;
cp_init.evt_handler = NULL; // Ignore events.
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling database discovery events.
*
* @details This function is a callback function to handle events from the database discovery module.
* Depending on the UUIDs that are discovered, this function forwards 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_hrs_c, p_evt);
ble_rscs_on_db_disc_evt(&m_rscs_c, p_evt);
}
/**
* @brief Database discovery initialization.
*/
static void db_discovery_init(void)
{
ret_code_t err_code = ble_db_discovery_init(db_disc_handler);
APP_ERROR_CHECK(err_code);
}
void uart_event_handle(app_uart_evt_t * p_event)
{
static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
static uint8_t index = 0;
uint32_t err_code;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
if ((data_array[index - 1] == '\n') || (index >= (m_ble_nus_max_data_len)))
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array, index);
do
{
uint16_t length = (uint16_t)index;
err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
if ( (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_BUSY) &&
(err_code != NRF_ERROR_NOT_FOUND) )
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
index = 0;
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
static void uart_init(void)
{
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = RX_PIN_NUMBER,
.tx_pin_no = TX_PIN_NUMBER,
.rts_pin_no = RTS_PIN_NUMBER,
.cts_pin_no = CTS_PIN_NUMBER,
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
.use_parity = false,
#if defined (UART_PRESENT)
.baud_rate = NRF_UART_BAUDRATE_115200
#else
.baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
/**void uart_event_handle(app_uart_evt_t * p_event)
{
static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
static uint8_t index = 0;
uint32_t err_code;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
if ((data_array[index - 1] == '\n') || (index >= (m_ble_nus_max_data_len)))
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array, index);
do
{
uint16_t length = (uint16_t)index;
err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
if ( (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_BUSY) &&
(err_code != NRF_ERROR_NOT_FOUND) )
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
index = 0;
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@brief Function for handling Queued Write module errors.
*
* @details A pointer to this function is passed to each service that may need to inform the
* application about an error.
*
* @param[in] nrf_error Error code that contains information about what went wrong.
*/
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
};
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
if (p_evt->type == BLE_NUS_EVT_RX_DATA)
{
uint32_t err_code;
NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);
for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
{
do
{
err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
{
NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
}
if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
{
while (app_uart_put('\n') == NRF_ERROR_BUSY);
}
}
}
/**@brief Function for initializing services that are 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_rscs_init_t rscs_init;
nrf_ble_qwr_init_t qwr_init = {0};
uint8_t body_sensor_location;
ble_nus_init_t nus_init;
//ble_nus_init_t nus_init;
// Initialize NUS.
// Initialize Queued Write module instances.
qwr_init.error_handler = nrf_qwr_error_handler;
for (uint32_t i = 0; i < NRF_SDH_BLE_TOTAL_LINK_COUNT; i++)
{
err_code = nrf_ble_qwr_init(&m_qwr[i], &qwr_init);
APP_ERROR_CHECK(err_code);
}
memset(&nus_init, 0, sizeof(nus_init));
//nus_init.data_handler = nus_data_handler;
err_code = ble_nus_init(&m_nus, &nus_init);
APP_ERROR_CHECK(err_code);
// Initialize the 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 or 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 the Running Speed and Cadence Service.
memset(&rscs_init, 0, sizeof(rscs_init));
rscs_init.evt_handler = NULL;
rscs_init.feature = BLE_RSCS_FEATURE_INSTANT_STRIDE_LEN_BIT |
BLE_RSCS_FEATURE_WALKING_OR_RUNNING_STATUS_BIT;
// Here the sec level for the Running Speed and Cadence Service can be changed or increased.
rscs_init.rsc_feature_rd_sec = SEC_OPEN;
rscs_init.rsc_meas_cccd_wr_sec = SEC_OPEN;
err_code = ble_rscs_init(&m_rscs, &rscs_init);
APP_ERROR_CHECK(err_code);
nus_init.data_handler = nus_data_handler;
}
/**static void nus_data_handler(ble_nus_evt_t * p_evt)
{
if (p_evt->type == BLE_NUS_EVT_RX_DATA)
{
uint32_t err_code;
NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);
for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
{
do
{
err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
{
NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
}
if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
{
while (app_uart_put('\n') == NRF_ERROR_BUSY);
}
}
}
/**@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.srdata.uuids_complete.uuid_cnt = sizeof(m_sr_uuids) / sizeof(m_sr_uuids[0]);
init.srdata.uuids_complete.p_uuids = m_sr_uuids;
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_INTERVAL;
init.config.ble_adv_fast_timeout = APP_ADV_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 logging.
*/
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 power management.
*/
static void power_management_init(void)
{
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the idle state (main loop). If there is no pending log operation,
then sleeps until the next event occurs.
*/
static void idle_state_handle(void)
{
if (NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
/**@brief Function for initializing the timer.
*/
static void timer_init(void)
{
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the application main entry.
*/
int main(void)
{
bool erase_bonds;
// Initialize.
uart_init();
log_init();
timer_init();
buttons_leds_init(&erase_bonds);
power_management_init();
ble_stack_init();
scan_init();
gap_params_init();
gatt_init();
conn_params_init();
db_discovery_init();
peer_manager_init();
hrs_c_init();
rscs_c_init();
services_init();
advertising_init();
// Start execution.
NRF_LOG_INFO("Relay example started.");
if (erase_bonds == true)
{
// Scanning and advertising is done upon PM_EVT_PEERS_DELETE_SUCCEEDED event.
delete_bonds();
}
else
{
adv_scan_start();
}
// Enter main loop.
for (;;)
{
idle_state_handle();
}
}
Thank you
