Hi,
I m using nrf52840 board act as central which will connect to particular device, and discover its primary services and characteristics.I am new to nordic development.I am able to discover services.
I am facing issue with conn handle while discovering characteristics results (gattc_status != success)
Please check my code and help to find out the issue.
I was trying to discover 128-bit UUID of services,not succeed in that, so that part is commented in code.
Code changes are done in ble_db_discovery.c:
Attaching ble_db_discovery.c and main.c file.
and also current output of program and expected output of nrfconnect app screenshot.
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*/
#include "sdk_common.h"
#if NRF_MODULE_ENABLED(BLE_DB_DISCOVERY)
#include "ble_db_discovery.h"
#include <stdlib.h>
#include "ble_srv_common.h"
#define NRF_LOG_MODULE_NAME ble_db_disc
#include "nrf_log.h"
NRF_LOG_MODULE_REGISTER();
#define SRV_DISC_START_HANDLE 0x0001 /**< The start handle value used during service discovery. */
#define DB_DISCOVERY_MAX_USERS BLE_DB_DISCOVERY_MAX_SRV /**< The maximum number of users/registrations allowed by this module. */
#define MODULE_INITIALIZED (m_initialized == true) /**< Macro designating whether the module has been initialized properly. */
#define MAX_SERVICE_COUNT 6
#define MAX_CHARACTERISTIC_COUNT 6
#define UUID_BASE {0x04, 0x2c, 0xe1, 0xf4, 0x10, 0xc4, 0x00, 0x00, \
0x31, 0xad, 0x51, 0x4c, 0x00, 0x00, 0x00, 0x00}
// Structure storing data of all discovered services.
typedef struct
{
ble_gattc_service_t services[MAX_SERVICE_COUNT]; /**< Data of the services found. */
uint8_t count; /**< Count of the services found. */
} device_srv_t;
typedef struct
{
ble_uuid_t uuid; /**< UUID of the characteristic. */
uint16_t decl_handle; /**< Handle of the characteristic declaration. */
uint16_t value_handle; /**< Handle of the characteristic value. */
uint16_t cccd_desc_handle; /**< Handle of the CCCD descriptors. */
bool notify; /**< True when notification of the value permitted. */
} char_data_t;
// Structure storing the data of all discovered characteristics.
typedef struct
{
char_data_t char_data[MAX_CHARACTERISTIC_COUNT]; /**< Characteristics data. */
uint8_t count; /**< Characteristics count. */
} srv_char_t;
device_srv_t * mp_device_srv[1]; /**< Pointers to the allocated memory needed to discover the services on the server. */
srv_char_t m_srv_char; /**< Stores all the characteristics data from one service to allow further operations. */
/**@brief Array of structures containing information about the registered application modules. */
static ble_uuid_t m_registered_handlers[DB_DISCOVERY_MAX_USERS];
bool m_vendor_uuid_read = false; /**< Variable that informs about the read request for a 128-bit service UUID. */
int curr_srv_id;
static uint16_t count = 0;
/**@brief Array of structures containing pending events to be sent to the application modules.
*
* @details Whenever a discovery related event is to be raised to a user module, it will be stored
* in this array first. When all services needed to be discovered have been
* discovered, all pending events will be sent to the corresponding user modules.
**/
static struct
{
ble_db_discovery_evt_t evt; /**< The pending event. */
ble_db_discovery_evt_handler_t evt_handler; /**< The event handler which should be called to raise this event. */
} m_pending_user_evts[DB_DISCOVERY_MAX_USERS];
static ble_db_discovery_evt_handler_t m_evt_handler;
static uint32_t m_pending_usr_evt_index; /**< The index to the pending user event array, pointing to the last added pending user event. */
static uint32_t m_num_of_handlers_reg; /**< The number of handlers registered with the DB Discovery module. */
static bool m_initialized = false; /**< This variable Indicates if the module is initialized or not. */
/**@brief Function for fetching the event handler provided by a registered application module.
*
* @param[in] srv_uuid UUID of the service.
*
* @retval evt_handler Event handler of the module, registered for the given service UUID.
* @retval NULL If no event handler is found.
*/
static ble_db_discovery_evt_handler_t registered_handler_get(ble_uuid_t const * p_srv_uuid)
{
for (uint32_t i = 0; i < m_num_of_handlers_reg; i++)
{
if (BLE_UUID_EQ(&(m_registered_handlers[i]), p_srv_uuid))
{
return (m_evt_handler);
}
}
return NULL;
}
/**@brief Function for storing the event handler provided by a registered application module.
*
* @param[in] p_srv_uuid The UUID of the service.
* @param[in] p_evt_handler The event handler provided by the application.
*
* @retval NRF_SUCCESS If the handler was stored or already present in the list.
* @retval NRF_ERROR_NO_MEM If there is no space left to store the handler.
*/
static uint32_t registered_handler_set(ble_uuid_t const * p_srv_uuid,
ble_db_discovery_evt_handler_t p_evt_handler)
{
if (registered_handler_get(p_srv_uuid) != NULL)
{
return NRF_SUCCESS;
}
if (m_num_of_handlers_reg < DB_DISCOVERY_MAX_USERS)
{
m_registered_handlers[m_num_of_handlers_reg] = *p_srv_uuid;
m_num_of_handlers_reg++;
return NRF_SUCCESS;
}
else
{
return NRF_ERROR_NO_MEM;
}
}
/**@brief Function for sending all pending discovery events to the corresponding user modules.
*/
static void pending_user_evts_send(void)
{
for (uint32_t i = 0; i < m_num_of_handlers_reg; i++)
{
// Pass the event to the corresponding event handler.
m_pending_user_evts[i].evt_handler(&(m_pending_user_evts[i].evt));
}
m_pending_usr_evt_index = 0;
}
/**@brief Function for indicating error to the application.
*
* @details This function will fetch the event handler based on the UUID of the service being
* discovered. (The event handler is registered by the application beforehand).
* The error code is added to the pending events together with the event handler.
* If no event handler was found, then this function will do nothing.
*
* @param[in] p_db_discovery Pointer to the DB discovery structure.
* @param[in] err_code Error code that should be provided to the application.
* @param[in] conn_handle Connection Handle.
*
*/
static void discovery_error_evt_trigger(ble_db_discovery_t * p_db_discovery,
uint32_t err_code,
uint16_t conn_handle)
{
ble_db_discovery_evt_handler_t p_evt_handler;
ble_gatt_db_srv_t * p_srv_being_discovered;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
p_evt_handler = registered_handler_get(&(p_srv_being_discovered->srv_uuid));
if (p_evt_handler != NULL)
{
ble_db_discovery_evt_t evt =
{
.conn_handle = conn_handle,
.evt_type = BLE_DB_DISCOVERY_ERROR,
.params.err_code = err_code,
};
p_evt_handler(&evt);
}
}
/**@brief Function for triggering a Discovery Complete or Service Not Found event to the
* application.
*
* @details This function will fetch the event handler based on the UUID of the service being
* discovered. (The event handler is registered by the application beforehand).
* It then triggers an event indicating the completion of the service discovery.
* If no event handler was found, then this function will do nothing.
*
* @param[in] p_db_discovery Pointer to the DB discovery structure.
* @param[in] is_srv_found Variable to indicate if the service was found at the peer.
* @param[in] conn_handle Connection Handle.
*/
static void discovery_complete_evt_trigger(ble_db_discovery_t * p_db_discovery,
bool is_srv_found,
uint16_t conn_handle)
{
ble_db_discovery_evt_handler_t p_evt_handler;
ble_gatt_db_srv_t * p_srv_being_discovered;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
p_evt_handler = registered_handler_get(&(p_srv_being_discovered->srv_uuid));
if (p_evt_handler != NULL)
{
if (m_pending_usr_evt_index < DB_DISCOVERY_MAX_USERS)
{
// Insert an event into the pending event list.
m_pending_user_evts[m_pending_usr_evt_index].evt.conn_handle = conn_handle;
m_pending_user_evts[m_pending_usr_evt_index].evt.params.discovered_db =
*p_srv_being_discovered;
if (is_srv_found)
{
m_pending_user_evts[m_pending_usr_evt_index].evt.evt_type =
BLE_DB_DISCOVERY_COMPLETE;
}
else
{
m_pending_user_evts[m_pending_usr_evt_index].evt.evt_type =
BLE_DB_DISCOVERY_SRV_NOT_FOUND;
}
m_pending_user_evts[m_pending_usr_evt_index].evt_handler = p_evt_handler;
m_pending_usr_evt_index++;
if (m_pending_usr_evt_index == m_num_of_handlers_reg)
{
// All registered modules have pending events. Send all pending events to the user
// modules.
pending_user_evts_send();
}
else
{
// Too many events pending. Do nothing. (Ideally this should not happen.)
}
}
}
}
/**@brief Function for handling service discovery completion.
*
* @details This function will be used to determine if there are more services to be discovered,
* and if so, initiate the discovery of the next service.
*
* @param[in] p_db_discovery Pointer to the DB Discovery Structure.
* @param[in] conn_handle Connection Handle.
*/
static void on_srv_disc_completion(ble_db_discovery_t * p_db_discovery,
uint16_t conn_handle)
{
p_db_discovery->discoveries_count++;
// NRF_LOG_INFO("incremented discovery count:%d",p_db_discovery->discoveries_count);
// Check if more services need to be discovered.
if (p_db_discovery->discoveries_count < m_num_of_handlers_reg)
{
// Reset the current characteristic index since a new service discovery is about to start.
p_db_discovery->curr_char_ind = 0;
// Initiate discovery of the next service.
p_db_discovery->curr_srv_ind++;
// NRF_LOG_INFO("incremented service index: %d",p_db_discovery->curr_srv_ind);
ble_gatt_db_srv_t * p_srv_being_discovered;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
p_srv_being_discovered->srv_uuid = m_registered_handlers[p_db_discovery->curr_srv_ind];
// Reset the characteristic count in the current service to zero since a new service
// discovery is about to start.
p_srv_being_discovered->char_count = 0;
NRF_LOG_INFO("Starting discovery of servicce with UUID 0x%x on connection handle 0x%x.",
p_srv_being_discovered->srv_uuid.uuid, conn_handle);
uint32_t err_code;
err_code = sd_ble_gattc_primary_services_discover(conn_handle,
SRV_DISC_START_HANDLE,
&(p_srv_being_discovered->srv_uuid));
if (err_code != NRF_SUCCESS)
{
p_db_discovery->discovery_in_progress = false;
// Error with discovering the service.
// Indicate the error to the registered user application.
discovery_error_evt_trigger(p_db_discovery, err_code, conn_handle);
m_pending_user_evts[0].evt.evt_type = BLE_DB_DISCOVERY_AVAILABLE;
m_pending_user_evts[0].evt.conn_handle = conn_handle;
return;
}
}
else
{
// No more service discovery is needed.
p_db_discovery->discovery_in_progress = false;
m_pending_user_evts[0].evt.evt_type = BLE_DB_DISCOVERY_AVAILABLE;
m_pending_user_evts[0].evt.conn_handle = conn_handle;
}
}
/**@brief Function for finding out if a characteristic discovery should be performed after the
* last discovered characteristic.
*
* @details This function is used during the time of database discovery to find out if there is
* a need to do more characteristic discoveries. The value handles of the
* last discovered characteristic is compared with the end handle of the service.
* If the service handle is greater than one of the former characteristic handles,
* it means that a characteristic discovery is required.
*
* @param[in] p_db_discovery The pointer to the DB Discovery structure.
* @param[in] p_after_char The pointer to the last discovered characteristic.
*
* @retval True if a characteristic discovery is required.
* @retval False if a characteristic discovery is NOT required.
*/
/*
static bool is_char_discovery_reqd(ble_db_discovery_t * p_db_discovery,
ble_gattc_char_t * p_after_char)
{
if (p_after_char->handle_value <
p_db_discovery->services[p_db_discovery->curr_srv_ind].handle_range.end_handle)
{
// Handle value of the characteristic being discovered is less than the end handle of
// the service being discovered. There is a possibility of more characteristics being
// present. Hence a characteristic discovery is required.
return true;
}
return false;
}
*/
/**@brief Function to find out if a descriptor discovery is required.
*
* @details This function finds out if there is a possibility of existence of descriptors between
* current characteristic and the next characteristic. If so, this function will compute
* the handle range on which the descriptors may be present and will return it.
* If the current characteristic is the last known characteristic, then this function
* will use the service end handle to find out if the current characteristic can have
* descriptors.
*
* @param[in] p_db_discovery Pointer to the DB Discovery structure.
* @param[in] p_curr_char Pointer to the current characteristic.
* @param[in] p_next_char Pointer to the next characteristic. This should be NULL if the
* caller knows that there is no characteristic after the current
* characteristic at the peer.
* @param[out] p_handle_range Pointer to the handle range in which descriptors may exist at the
* the peer.
*
* @retval True If a descriptor discovery is required.
* @retval False If a descriptor discovery is NOT required.
*/
static bool is_desc_discovery_reqd(ble_db_discovery_t * p_db_discovery,
ble_gatt_db_char_t * p_curr_char,
ble_gatt_db_char_t * p_next_char,
ble_gattc_handle_range_t * p_handle_range)
{
if (p_next_char == NULL)
{
// Current characteristic is the last characteristic in the service. Check if the value
// handle of the current characteristic is equal to the service end handle.
if (
p_curr_char->characteristic.handle_value ==
p_db_discovery->services[p_db_discovery->curr_srv_ind].handle_range.end_handle
)
{
// No descriptors can be present for the current characteristic. p_curr_char is the last
// characteristic with no descriptors.
return false;
}
p_handle_range->start_handle = p_curr_char->characteristic.handle_value + 1;
// Since the current characteristic is the last characteristic in the service, the end
// handle should be the end handle of the service.
p_handle_range->end_handle =
p_db_discovery->services[p_db_discovery->curr_srv_ind].handle_range.end_handle;
return true;
}
// p_next_char != NULL. Check for existence of descriptors between the current and the next
// characteristic.
if ((p_curr_char->characteristic.handle_value + 1) == p_next_char->characteristic.handle_decl)
{
// No descriptors can exist between the two characteristic.
return false;
}
p_handle_range->start_handle = p_curr_char->characteristic.handle_value + 1;
p_handle_range->end_handle = p_next_char->characteristic.handle_decl - 1;
return true;
}
/**@brief Function for performing characteristic discovery.
*
* @param[in] p_db_discovery Pointer to the DB Discovery structure.
* @param[in] conn_handle Connection Handle.
*
* @return NRF_SUCCESS if the SoftDevice was successfully requested to perform the characteristic
* discovery. Otherwise an error code. This function returns the error code returned
* by the SoftDevice API @ref sd_ble_gattc_characteristics_discover.
*/
static uint32_t characteristics_discover(ble_db_discovery_t * p_db_discovery,
uint16_t conn_handle)
{
ble_gatt_db_srv_t * p_srv_being_discovered;
ble_gattc_handle_range_t handle_range;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
handle_range.start_handle = p_srv_being_discovered->handle_range.start_handle;
handle_range.end_handle = p_srv_being_discovered->handle_range.end_handle;
return sd_ble_gattc_characteristics_discover(conn_handle, &handle_range);
}
/**@brief Function for performing descriptor discovery, if required.
*
* @details This function will check if descriptor discovery is required and then perform it if
* needed. If no more descriptor discovery is required for the service, then the output
* parameter p_raise_discov_complete is set to true, indicating to the caller that a
* discovery complete event can be triggered to the application.
*
* @param[in] p_db_discovery Pointer to the DB Discovery structure.
* @param[out] p_raise_discov_complete The value pointed to by this pointer will be set to true if
* the Discovery Complete event can be triggered to the
* application.
* @param[in] conn_handle Connection Handle.
*
* @return NRF_SUCCESS if the SoftDevice was successfully requested to perform the descriptor
* discovery, or if no more descriptor discovery is required. Otherwise an error code.
* This function returns the error code returned by the SoftDevice API @ref
* sd_ble_gattc_descriptors_discover.
*/
static uint32_t descriptors_discover(ble_db_discovery_t * p_db_discovery,
bool * p_raise_discov_complete,
uint16_t conn_handle)
{
ble_gattc_handle_range_t handle_range;
ble_gatt_db_char_t * p_curr_char_being_discovered;
ble_gatt_db_srv_t * p_srv_being_discovered;
bool is_discovery_reqd = false;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
p_curr_char_being_discovered =
&(p_srv_being_discovered->charateristics[p_db_discovery->curr_char_ind]);
if ((p_db_discovery->curr_char_ind + 1) == p_srv_being_discovered->char_count)
{
// This is the last characteristic of this service.
is_discovery_reqd = is_desc_discovery_reqd(p_db_discovery,
p_curr_char_being_discovered,
NULL,
&handle_range);
}
else
{
uint8_t i;
ble_gatt_db_char_t * p_next_char;
for (i = p_db_discovery->curr_char_ind; i < p_srv_being_discovered->char_count; i++)
{
if (i == (p_srv_being_discovered->char_count - 1))
{
// The current characteristic is the last characteristic in the service.
p_next_char = NULL;
}
else
{
p_next_char = &(p_srv_being_discovered->charateristics[i + 1]);
}
// Check if it is possible for the current characteristic to have a descriptor.
if (is_desc_discovery_reqd(p_db_discovery,
p_curr_char_being_discovered,
p_next_char,
&handle_range))
{
is_discovery_reqd = true;
break;
}
else
{
// No descriptors can exist.
p_curr_char_being_discovered = p_next_char;
p_db_discovery->curr_char_ind++;
}
}
}
if (!is_discovery_reqd)
{
// No more descriptor discovery required. Discovery is complete.
// This informs the caller that a discovery complete event can be triggered.
*p_raise_discov_complete = true;
return NRF_SUCCESS;
}
*p_raise_discov_complete = false;
return sd_ble_gattc_descriptors_discover(conn_handle, &handle_range);
}
/**@brief Function for handling primary service discovery response.
*
* @details This function will handle the primary service discovery response and start the
* discovery of characteristics within that service.
*
* @param[in] p_db_discovery Pointer to the DB Discovery structure.
* @param[in] p_ble_gattc_evt Pointer to the GATT Client event.
*/
void on_primary_srv_discovery_rsp(ble_db_discovery_t * p_db_discovery,
ble_gattc_evt_t const * p_ble_gattc_evt)
{
ble_gatt_db_srv_t * p_srv_being_discovered;
uint16_t bytes_to_copy;
static uint16_t offset = 0;
int conn_hdle;
conn_hdle = p_ble_gattc_evt->conn_handle;
ble_gattc_service_t * const p_service =
mp_device_srv[conn_hdle]->services;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
if (p_ble_gattc_evt->conn_handle != p_db_discovery->conn_handle)
{
// return;
}
ble_gattc_evt_prim_srvc_disc_rsp_t const * p_prim_srvc_disc_rsp_evt;
uint32_t err_code;
p_prim_srvc_disc_rsp_evt = &(p_ble_gattc_evt->params.prim_srvc_disc_rsp);
count = p_prim_srvc_disc_rsp_evt->count;
NRF_LOG_INFO("service count %d",count);
// If no more services are found.
if ((count != 0) &&
(p_ble_gattc_evt->gatt_status == BLE_GATT_STATUS_SUCCESS))
{
if ((count + offset) > MAX_SERVICE_COUNT)
{
bytes_to_copy = MAX_SERVICE_COUNT - offset;
}
else
{
bytes_to_copy = count;
}
// Save services data.
memcpy((p_service + offset),p_prim_srvc_disc_rsp_evt->services,
bytes_to_copy * sizeof(ble_gattc_service_t));
offset += count;
for(curr_srv_id= 0;curr_srv_id <= count; curr_srv_id++ )
{
p_srv_being_discovered->srv_uuid = p_prim_srvc_disc_rsp_evt->services[curr_srv_id].uuid;
p_srv_being_discovered->handle_range = p_prim_srvc_disc_rsp_evt->services[curr_srv_id].handle_range;
NRF_LOG_INFO("Found serviice UUID %x and its start handle:%d , End handle: %d, type:%d, cuur_srv:%d", p_srv_being_discovered->srv_uuid.uuid,
p_srv_being_discovered->handle_range.start_handle, p_srv_being_discovered->handle_range.end_handle,
p_srv_being_discovered->srv_uuid.type,curr_srv_id);
}
// If the last service has not been reached, this function must be called again with a new start handle.
if(count != 0)
{
err_code = sd_ble_gattc_primary_services_discover(conn_hdle,
p_prim_srvc_disc_rsp_evt->services[count - 1].handle_range.end_handle + 1,
NULL);
if(err_code == NRF_SUCCESS)
{
NRF_LOG_INFO("Discovery done successfully..");
}
else
{
NRF_LOG_INFO("Discovery Fail..");
}
return;
}
}
/*for (uint8_t i = 0; i < offset; i++)
{
NRF_LOG_INFO("UUID: %x and its type: %d",p_service[i].uuid.uuid,p_service[i].uuid.type);
if (p_service[i].uuid.type == BLE_UUID_TYPE_UNKNOWN)
{
m_vendor_uuid_read = true;
// Read service 128-bit UUID.
err_code = sd_ble_gattc_read(conn_hdle, p_service[i].handle_range.start_handle, 0);
if(err_code == NRF_SUCCESS)
{
NRF_LOG_INFO("Read done successfully..");
}
else
{
NRF_LOG_INFO("Read Fail..");
}
offset = 0;
}
else
{
}
}*/
else
{
if(p_ble_gattc_evt->gatt_status == BLE_GATT_STATUS_ATTERR_ATTRIBUTE_NOT_FOUND)
{
NRF_LOG_INFO("Service UUID 0x%x not found.", p_srv_being_discovered->srv_uuid.uuid);
}
else if(count == 0)
{
NRF_LOG_INFO("No other service found");
}
// Trigger Service Not Found event to the application.
discovery_complete_evt_trigger(p_db_discovery, false, p_ble_gattc_evt->conn_handle);
on_srv_disc_completion(p_db_discovery, p_ble_gattc_evt->conn_handle);
}
err_code = characteristics_discover(p_db_discovery, p_ble_gattc_evt->conn_handle);
if (err_code != NRF_SUCCESS)
{
p_db_discovery->discovery_in_progress = false;
NRF_LOG_INFO("Error with discovering the characteristics");
// Indicate the error to the registered user application.
discovery_error_evt_trigger(p_db_discovery, err_code, p_ble_gattc_evt->conn_handle);
m_pending_user_evts[0].evt.evt_type = BLE_DB_DISCOVERY_AVAILABLE;
m_pending_user_evts[0].evt.conn_handle = p_ble_gattc_evt->conn_handle;
}
offset = 0;
}
/**@brief Function for handling characteristic discovery response.
*
* @param[in] p_db_discovery Pointer to the DB Discovery structure.
* @param[in] p_ble_gattc_evt Pointer to the GATT Client event.
*/
static void on_characteristic_discovery_rsp(ble_db_discovery_t * p_db_discovery,
ble_gattc_evt_t const * p_ble_gattc_evt)
{
uint32_t err_code;
// ble_gatt_db_srv_t * p_srv_being_discovered;
uint16_t bytes_to_copy;
// bool perform_desc_discov = false;
uint16_t charr_count;
static uint16_t char_offset = 0;
uint16_t conn_handle = p_ble_gattc_evt->conn_handle;
if (p_ble_gattc_evt->conn_handle != p_db_discovery->conn_handle)
{
//return;
}
charr_count = p_ble_gattc_evt->params.char_disc_rsp.count;
NRF_LOG_RAW_INFO("characteristics at start: %d\r\n", charr_count);
if (p_ble_gattc_evt->gatt_status == BLE_GATT_STATUS_SUCCESS)
{
NRF_LOG_INFO("In success\r\n");
ble_gattc_evt_char_disc_rsp_t const * p_char_disc_rsp_evt;
p_char_disc_rsp_evt = &(p_ble_gattc_evt->params.char_disc_rsp);
uint32_t i;
//uint32_t j;
if ((charr_count + char_offset) > MAX_CHARACTERISTIC_COUNT)
{
bytes_to_copy = MAX_CHARACTERISTIC_COUNT - char_offset;
NRF_LOG_RAW_INFO("Too many characteristics discovered\r\n");
}
else
{
bytes_to_copy = charr_count;
}
// Save characteristics data.
for (uint8_t i = char_offset; i < bytes_to_copy; i++)
{
m_srv_char.char_data[i].decl_handle = p_char_disc_rsp_evt->chars[i].handle_decl;
m_srv_char.char_data[i].value_handle = p_char_disc_rsp_evt->chars[i].handle_value;
m_srv_char.char_data[i].uuid = p_char_disc_rsp_evt->chars[i].uuid;
m_srv_char.char_data[i].notify = p_char_disc_rsp_evt->chars[i].char_props.notify;
m_srv_char.char_data[i].cccd_desc_handle = 0;
char_offset++;
}
// Display characteristics data.
for (i = 0; i < char_offset; i++)
{
ble_gatt_char_props_t char_param =
p_ble_gattc_evt->params.char_disc_rsp.chars[i].char_props;
NRF_LOG_RAW_INFO("Characteristic UUID: %X\r\n",
p_ble_gattc_evt->params.char_disc_rsp.chars[i].uuid.uuid);
NRF_LOG_RAW_INFO("Parameters:\r\n");
NRF_LOG_RAW_INFO("broadcast: %d ", char_param.broadcast);
NRF_LOG_RAW_INFO("read: %d ", char_param.read);
NRF_LOG_RAW_INFO("write_wo_resp: %d ", char_param.write_wo_resp);
NRF_LOG_RAW_INFO("write: %d ", char_param.write);
NRF_LOG_RAW_INFO("notify: %d\r\n", char_param.notify);
NRF_LOG_RAW_INFO("indicate: %d ", char_param.indicate);
NRF_LOG_RAW_INFO("auth_signed_wr: %d\r\n", char_param.auth_signed_wr);
}
}
// If the last characteristic has not been reached, look for a new handle range.
ble_gattc_handle_range_t handle_range;
handle_range.start_handle = m_srv_char.char_data[char_offset - 1].value_handle + 1;
// Search for end handle.
for (uint8_t j = 0; j < mp_device_srv[conn_handle]->count; j++)
{
if (handle_range.start_handle >
mp_device_srv[conn_handle]->services[j].handle_range.start_handle)
{
handle_range.end_handle =
mp_device_srv[conn_handle]->services[j].handle_range.end_handle;
break;
}
}
// Handle value of the characteristic being discovered is less than the end handle of
// the service being discovered. There is no possibility of more characteristics being
// present.
if ((m_srv_char.char_data[char_offset - 1].value_handle >= handle_range.end_handle) ||
(char_offset == MAX_CHARACTERISTIC_COUNT) ||
(p_ble_gattc_evt->gatt_status != BLE_GATT_STATUS_SUCCESS))
{
NRF_LOG_RAW_INFO("characteristics at end: %d\r\n", char_offset);
m_srv_char.count = char_offset;
char_offset = 0;
// Search for the CCCD descriptors.
// descriptors_discover(p_ble_gattc_evt);
return;
}
// If the last Characteristic has not been reached, this function must be called again with new handle range.
err_code = sd_ble_gattc_characteristics_discover(p_ble_gattc_evt->conn_handle, &handle_range);
if(err_code == NRF_SUCCESS)
{
NRF_LOG_INFO("Char Discovery done successfully..");
}
else
{
NRF_LOG_INFO("Char Discovery Fail..");
}
}
/**@brief Function for handling descriptor discovery response.
*
* @param[in] p_db_discovery Pointer to the DB Discovery structure.
* @param[in] p_ble_gattc_evt Pointer to the GATT Client event.
*/
static void on_descriptor_discovery_rsp(ble_db_discovery_t * const p_db_discovery,
const ble_gattc_evt_t * const p_ble_gattc_evt)
{
const ble_gattc_evt_desc_disc_rsp_t * p_desc_disc_rsp_evt;
ble_gatt_db_srv_t * p_srv_being_discovered;
if (p_ble_gattc_evt->conn_handle != p_db_discovery->conn_handle)
{
return;
}
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
p_desc_disc_rsp_evt = &(p_ble_gattc_evt->params.desc_disc_rsp);
ble_gatt_db_char_t * p_char_being_discovered =
&(p_srv_being_discovered->charateristics[p_db_discovery->curr_char_ind]);
if (p_ble_gattc_evt->gatt_status == BLE_GATT_STATUS_SUCCESS)
{
// The descriptor was found at the peer.
// Iterate through and collect CCCD, Extended Properties,
// User Description & Report Reference descriptor handles.
for (uint32_t i = 0; i < p_desc_disc_rsp_evt->count; i++)
{
switch (p_desc_disc_rsp_evt->descs[i].uuid.uuid)
{
case BLE_UUID_DESCRIPTOR_CLIENT_CHAR_CONFIG:
p_char_being_discovered->cccd_handle =
p_desc_disc_rsp_evt->descs[i].handle;
break;
case BLE_UUID_DESCRIPTOR_CHAR_EXT_PROP:
p_char_being_discovered->ext_prop_handle =
p_desc_disc_rsp_evt->descs[i].handle;
break;
case BLE_UUID_DESCRIPTOR_CHAR_USER_DESC:
p_char_being_discovered->user_desc_handle =
p_desc_disc_rsp_evt->descs[i].handle;
break;
case BLE_UUID_REPORT_REF_DESCR:
p_char_being_discovered->report_ref_handle =
p_desc_disc_rsp_evt->descs[i].handle;
break;
}
/* Break if we've found all the descriptors we are looking for. */
if (p_char_being_discovered->cccd_handle != BLE_GATT_HANDLE_INVALID &&
p_char_being_discovered->ext_prop_handle != BLE_GATT_HANDLE_INVALID &&
p_char_being_discovered->user_desc_handle != BLE_GATT_HANDLE_INVALID &&
p_char_being_discovered->report_ref_handle != BLE_GATT_HANDLE_INVALID)
{
break;
}
}
}
bool raise_discov_complete = false;
if ((p_db_discovery->curr_char_ind + 1) == p_srv_being_discovered->char_count)
{
// No more characteristics and descriptors need to be discovered. Discovery is complete.
// Send a discovery complete event to the user application.
raise_discov_complete = true;
}
else
{
// Begin discovery of descriptors for the next characteristic.
uint32_t err_code;
p_db_discovery->curr_char_ind++;
err_code = descriptors_discover(p_db_discovery,
&raise_discov_complete,
p_ble_gattc_evt->conn_handle);
if (err_code != NRF_SUCCESS)
{
p_db_discovery->discovery_in_progress = false;
// Error with discovering the service.
// Indicate the error to the registered user application.
discovery_error_evt_trigger(p_db_discovery, err_code, p_ble_gattc_evt->conn_handle);
m_pending_user_evts[0].evt.evt_type = BLE_DB_DISCOVERY_AVAILABLE;
m_pending_user_evts[0].evt.conn_handle = p_ble_gattc_evt->conn_handle;
return;
}
}
if (raise_discov_complete)
{
NRF_LOG_DEBUG("Discovery of service with UUID 0x%x completed with success"
" on connection handle 0x%x.",
p_srv_being_discovered->srv_uuid.uuid,
p_ble_gattc_evt->conn_handle);
discovery_complete_evt_trigger(p_db_discovery, true, p_ble_gattc_evt->conn_handle);
on_srv_disc_completion(p_db_discovery, p_ble_gattc_evt->conn_handle);
}
}
static void on_read_rsp(const ble_gattc_evt_t * const p_ble_gattc_evt)
{
uint32_t err_code;
uint16_t conn_handle = p_ble_gattc_evt->conn_handle;
ble_uuid128_t uuid = {UUID_BASE};
const ble_gattc_evt_read_rsp_t * p_read_rsp = &(p_ble_gattc_evt->params.read_rsp);
NRF_LOG_INFO("Read data = 0x%x,0x%x",p_read_rsp->data[13],p_read_rsp->data[14]);
NRF_LOG_INFO("Read_rsp_len: %d",p_read_rsp->len);
if (m_vendor_uuid_read)
{
for (uint8_t i = 0; i < mp_device_srv[conn_handle]->count; i++)
{
// if (p_read_rsp->len == 16)
if (p_read_rsp->handle ==
mp_device_srv[conn_handle]->services[i].handle_range.start_handle)
{
//lint -save -e420
memcpy(uuid.uuid128, p_read_rsp->data, sizeof(uuid.uuid128));
//lint -restore
err_code = sd_ble_uuid_vs_add(&uuid, &mp_device_srv[conn_handle]->services[i].uuid.type);
if(err_code == NRF_SUCCESS)
{
NRF_LOG_INFO("Adding 128-bit UUID done successfully..");
//NRF_LOG_INFO("128-bit UUID : %x",uuid.uuid128);
}
else
{
NRF_LOG_INFO("Adding 128-bit UUID Fail..");
}
break;
}
}
return;
}
}
uint32_t ble_db_discovery_init(const ble_db_discovery_evt_handler_t evt_handler)
{
uint32_t err_code = NRF_SUCCESS;
VERIFY_PARAM_NOT_NULL(evt_handler);
m_num_of_handlers_reg = 0;
m_initialized = true;
m_pending_usr_evt_index = 0;
m_evt_handler = evt_handler;
return err_code;
}
uint32_t ble_db_discovery_close()
{
m_num_of_handlers_reg = 0;
m_initialized = false;
m_pending_usr_evt_index = 0;
return NRF_SUCCESS;
}
uint32_t ble_db_discovery_evt_register(ble_uuid_t const * p_uuid)
{
VERIFY_PARAM_NOT_NULL(p_uuid);
VERIFY_MODULE_INITIALIZED();
return registered_handler_set(p_uuid, m_evt_handler);
}
static uint32_t discovery_start(ble_db_discovery_t * const p_db_discovery, uint16_t conn_handle)
{
uint32_t err_code;
ble_gatt_db_srv_t * p_srv_being_discovered;
memset(p_db_discovery, 0x00, sizeof(ble_db_discovery_t));
p_db_discovery->conn_handle = conn_handle;
m_pending_usr_evt_index = 0;
p_db_discovery->discoveries_count = 0;
p_db_discovery->curr_srv_ind = 0;
p_db_discovery->curr_char_ind = 0;
p_srv_being_discovered = &(p_db_discovery->services[p_db_discovery->curr_srv_ind]);
p_srv_being_discovered->srv_uuid = m_registered_handlers[p_db_discovery->curr_srv_ind];
NRF_LOG_DEBUG("Starting discovery of service with UUID 0x%x on connection handle 0x%x.",
p_srv_being_discovered->srv_uuid.uuid, conn_handle);
err_code = sd_ble_gattc_primary_services_discover(conn_handle,
SRV_DISC_START_HANDLE,
&(p_srv_being_discovered->srv_uuid));
if (err_code != NRF_ERROR_BUSY)
{
VERIFY_SUCCESS(err_code);
p_db_discovery->discovery_in_progress = true;
p_db_discovery->discovery_pending = false;
}
else
{
p_db_discovery->discovery_in_progress = true;
p_db_discovery->discovery_pending = true;
}
return NRF_SUCCESS;
}
uint32_t ble_db_discovery_start(ble_db_discovery_t * const p_db_discovery, uint16_t conn_handle)
{
VERIFY_PARAM_NOT_NULL(p_db_discovery);
VERIFY_MODULE_INITIALIZED();
if (m_num_of_handlers_reg == 0)
{
// No user modules were registered. There are no services to discover.
return NRF_ERROR_INVALID_STATE;
}
if (p_db_discovery->discovery_in_progress)
{
return NRF_ERROR_BUSY;
}
return discovery_start(p_db_discovery, conn_handle);
}
/**@brief Function for handling disconnected event.
*
* @param[in] p_db_discovery Pointer to the DB Discovery structure.
* @param[in] p_ble_gattc_evt Pointer to the GAP event.
*/
static void on_disconnected(ble_db_discovery_t * p_db_discovery,
ble_gap_evt_t const * p_evt)
{
if (p_evt->conn_handle == p_db_discovery->conn_handle)
{
p_db_discovery->discovery_in_progress = false;
p_db_discovery->discovery_pending = false;
p_db_discovery->conn_handle = BLE_CONN_HANDLE_INVALID;
}
}
void ble_db_discovery_on_ble_evt(ble_evt_t const * p_ble_evt,
void * p_context)
{
VERIFY_PARAM_NOT_NULL_VOID(p_ble_evt);
VERIFY_PARAM_NOT_NULL_VOID(p_context);
VERIFY_MODULE_INITIALIZED_VOID();
//NRF_LOG_INFO("In ble_discovery_evt function");
ble_db_discovery_t * p_db_discovery = (ble_db_discovery_t *)p_context;
switch (p_ble_evt->header.evt_id)
{
case BLE_GATTC_EVT_PRIM_SRVC_DISC_RSP:
NRF_LOG_INFO("Found services in.............");
on_primary_srv_discovery_rsp(p_db_discovery, &(p_ble_evt->evt.gattc_evt));
break;
case BLE_GATTC_EVT_CHAR_DISC_RSP:
on_characteristic_discovery_rsp(p_db_discovery, &(p_ble_evt->evt.gattc_evt));
NRF_LOG_INFO("In Charcteristics rsp");
break;
case BLE_GATTC_EVT_DESC_DISC_RSP:
on_descriptor_discovery_rsp(p_db_discovery, &(p_ble_evt->evt.gattc_evt));
break;
case BLE_GAP_EVT_DISCONNECTED:
on_disconnected(p_db_discovery, &(p_ble_evt->evt.gap_evt));
break;
case BLE_GATTC_EVT_READ_RSP:
on_read_rsp(&(p_ble_evt->evt.gattc_evt));
NRF_LOG_INFO("Read_Rsp");
break;
default:
break;
}
if ( (p_db_discovery->discovery_pending)
&& (p_ble_evt->header.evt_id >= BLE_GATTC_EVT_BASE)
&& (p_ble_evt->header.evt_id <= BLE_GATTC_EVT_LAST)
&& (p_ble_evt->evt.gattc_evt.conn_handle == p_db_discovery->conn_handle))
{
(void)discovery_start(p_db_discovery, p_db_discovery->conn_handle);
}
}
#endif // NRF_MODULE_ENABLED(BLE_DB_DISCOVERY)
/**
* 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.
*
*/
/**
* @brief BLE LED Button Service central and client application main file.
*
* This file contains the source code for a sample client application using the LED Button service.
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "nrf_sdh.h"
#include "nrf_sdh_ble.h"
#include "nrf_sdh_soc.h"
#include "nrf_pwr_mgmt.h"
#include "app_timer.h"
#include "boards.h"
#include "bsp.h"
#include "bsp_btn_ble.h"
#include "ble.h"
#include "ble_hci.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "ble_db_discovery.h"
#include "ble_lbs_c.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_scan.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define CENTRAL_SCANNING_LED BSP_BOARD_LED_0 /**< Scanning LED will be on when the device is scanning. */
#define CENTRAL_CONNECTED_LED BSP_BOARD_LED_1 /**< Connected LED will be on when the device is connected. */
#define LEDBUTTON_LED BSP_BOARD_LED_2 /**< LED to indicate a change of state of the the Button characteristic on the peer. */
#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 SCAN_DURATION 0x0000 /**< Timout when scanning. 0x0000 disables timeout. */
#define MIN_CONNECTION_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) /**< Determines minimum connection interval in milliseconds. */
#define MAX_CONNECTION_INTERVAL MSEC_TO_UNITS(30, UNIT_1_25_MS) /**< Determines maximum connection interval in milliseconds. */
#define SLAVE_LATENCY 0 /**< Determines slave latency in terms of connection events. */
#define SUPERVISION_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Determines supervision time-out in units of 10 milliseconds. */
#define LEDBUTTON_BUTTON_PIN BSP_BUTTON_0 /**< Button that will write to the LED characteristic of the peer */
#define SCANNING_BUTTON BSP_BUTTON_3 /**< abort any connections if any and start advertising/scan , non connectable scannable packets */
#define BUTTON_DETECTION_DELAY APP_TIMER_TICKS(50) /**< Delay from a GPIOTE event until a button is reported as pushed (in number of timer ticks). */
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
NRF_BLE_SCAN_DEF(m_scan); /**< Scanning module instance. */
BLE_LBS_C_DEF(m_ble_lbs_c); /**< Main structure used by the LBS client module. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
BLE_DB_DISCOVERY_DEF(m_db_disc); /**< DB discovery module instance. */
#define SRV_DISC_START_HANDLE 0x0001 /**< The start handle value used during service discovery. */
static char const m_target_periph_name[] = "RW2-000404919"; /**< Name of the device we try to connect to. This name is searched in the scan report data*/
/**@brief Function to handle 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);
}
/**@brief Function for the LEDs initialization.
*
* @details Initializes all LEDs used by the application.
*/
static void leds_init(void)
{
bsp_board_init(BSP_INIT_LEDS);
}
/**@brief Function for enabling button input.
*/
static void buttons_enable(void)
{
ret_code_t err_code = app_button_enable();
APP_ERROR_CHECK(err_code);
}
/**@brief Function to start scanning.
*/
static void scan_start(void)
{
ret_code_t err_code;
NRF_LOG_INFO("Start scanning.");
err_code = nrf_ble_scan_start(&m_scan);
APP_ERROR_CHECK(err_code);
bsp_board_led_off(CENTRAL_CONNECTED_LED);
bsp_board_led_on(CENTRAL_SCANNING_LED);
}
/**@brief Handles events coming from the LED Button central module.
*/
/*
static void lbs_c_evt_handler(ble_lbs_c_t * p_lbs_c, ble_lbs_c_evt_t * p_lbs_c_evt)
{
switch (p_lbs_c_evt->evt_type)
{
case BLE_LBS_C_EVT_DISCOVERY_COMPLETE:
{
ret_code_t err_code;
err_code = ble_lbs_c_handles_assign(&m_ble_lbs_c,
p_lbs_c_evt->conn_handle,
&p_lbs_c_evt->params.peer_db);
NRF_LOG_INFO("LED Button service discovered on conn_handle 0x%x.", p_lbs_c_evt->conn_handle);
err_code = app_button_enable();
APP_ERROR_CHECK(err_code);
// LED Button service discovered. Enable notification of Button.
err_code = ble_lbs_c_button_notif_enable(p_lbs_c);
APP_ERROR_CHECK(err_code);
} break; // BLE_LBS_C_EVT_DISCOVERY_COMPLETE
case BLE_LBS_C_EVT_BUTTON_NOTIFICATION:
{
NRF_LOG_INFO("Button state changed on peer to 0x%x.", p_lbs_c_evt->params.button.button_state);
if (p_lbs_c_evt->params.button.button_state)
{
bsp_board_led_on(LEDBUTTON_LED);
}
else
{
bsp_board_led_off(LEDBUTTON_LED);
}
} break; // BLE_LBS_C_EVT_BUTTON_NOTIFICATION
default:
// No implementation needed.
break;
}
}
*/
/**@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)
{
ret_code_t err_code;
// For readability.
ble_gap_evt_t const * p_gap_evt = &p_ble_evt->evt.gap_evt;
// ble_db_discovery_t * p_db_discovery = (ble_db_discovery_t *)p_context;
// ble_uuid128_t base_uuid = {UUID_BASE};
// uint8_t uuidType = 2;
switch (p_ble_evt->header.evt_id)
{
// Upon connection, check which peripheral has connected (HR or RSC), initiate DB
// discovery, update LEDs status and resume scanning if necessary. */
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected.");
err_code = sd_ble_gattc_primary_services_discover(p_gap_evt->conn_handle,
SRV_DISC_START_HANDLE,NULL);
APP_ERROR_CHECK(err_code);
if (err_code == NRF_SUCCESS)
{
NRF_LOG_INFO("Discovery done successfully..");
}
// peripherals to connect to.
bsp_board_led_on(CENTRAL_CONNECTED_LED);
bsp_board_led_off(CENTRAL_SCANNING_LED);
break;
// Upon disconnection, reset the connection handle of the peer which disconnected, update
// the LEDs status and start scanning again.
case BLE_GAP_EVT_DISCONNECTED:
{
NRF_LOG_INFO("Disconnected");
scan_start();
} break;
case BLE_GAP_EVT_TIMEOUT:
{
// We have not specified a timeout for scanning, so only connection attemps can timeout.
if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_CONN)
{
NRF_LOG_DEBUG("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 LED Button client initialization.
*/
/*
static void lbs_c_init(void)
{
ret_code_t err_code;
ble_lbs_c_init_t lbs_c_init_obj;
lbs_c_init_obj.evt_handler = lbs_c_evt_handler;
err_code = ble_lbs_c_init(&m_ble_lbs_c, &lbs_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 handling events from the button handler module.
*
* @param[in] pin_no The pin that the event applies to.
* @param[in] button_action The button action (press/release).
*/
static void button_event_handler(uint8_t pin_no, uint8_t button_action)
{
ret_code_t err_code;
switch (pin_no)
{
case LEDBUTTON_BUTTON_PIN:
err_code = ble_lbs_led_status_send(&m_ble_lbs_c, button_action);
if (err_code != NRF_SUCCESS &&
err_code != BLE_ERROR_INVALID_CONN_HANDLE &&
err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
if (err_code == NRF_SUCCESS)
{
NRF_LOG_INFO("LBS write LED state %d", button_action);
}
break;
case SCANNING_BUTTON:
scan_start();
break;
default:
APP_ERROR_HANDLER(pin_no);
break;
}
}
/**@brief Function for handling Scaning events.
*
* @param[in] p_scan_evt Scanning event.
*/
static void scan_evt_handler(scan_evt_t const * p_scan_evt)
{
ret_code_t err_code;
switch(p_scan_evt->scan_evt_id)
{
case NRF_BLE_SCAN_EVT_CONNECTING_ERROR:
err_code = p_scan_evt->params.connecting_err.err_code;
APP_ERROR_CHECK(err_code);
break;
default:
break;
}
}
/**@brief Function for initializing the button handler module.
*/
static void buttons_init(void)
{
ret_code_t err_code;
//The array must be static because a pointer to it will be saved in the button handler module.
static app_button_cfg_t buttons[] =
{
{LEDBUTTON_BUTTON_PIN, false, BUTTON_PULL, button_event_handler},
{SCANNING_BUTTON, false, BUTTON_PULL, button_event_handler}
};
err_code = app_button_init(buttons, ARRAY_SIZE(buttons),
BUTTON_DETECTION_DELAY);
APP_ERROR_CHECK(err_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_lbs_on_db_disc_evt(&m_ble_lbs_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);
}
/**@brief Function for initializing the log.
*/
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 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 Power manager. */
static void power_management_init(void)
{
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
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.connect_if_match = true;
init_scan.conn_cfg_tag = APP_BLE_CONN_CFG_TAG;
err_code = nrf_ble_scan_init(&m_scan, &init_scan, scan_evt_handler);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_scan_filter_set(&m_scan, SCAN_NAME_FILTER, m_target_periph_name);
APP_ERROR_CHECK(err_code);
// Setting filters for scanning.
err_code = nrf_ble_scan_filters_enable(&m_scan, NRF_BLE_SCAN_NAME_FILTER, false);
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);
}
/**@ Function for settings scan filters.
*/
/*
static void scan_filters_set(void)
{
ret_code_t err_code;
//ble_uuid_t target_uuid = {.uuid = TARGET_UUID, .type = BLE_UUID_TYPE_BLE};
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_filters_enable(&m_scan,
NRF_BLE_SCAN_NAME_FILTER,
false);
}
*/
/**@brief Function for handling the idle state (main loop).
*
* @details Handle any pending log operation(s), then sleep until the next event occurs.
*/
static void idle_state_handle(void)
{
NRF_LOG_FLUSH();
nrf_pwr_mgmt_run();
}
int main(void)
{
// Initialize.
log_init();
timer_init();
leds_init();
buttons_init();
power_management_init();
ble_stack_init();
scan_init();
gatt_init();
db_discovery_init();
//lbs_c_init();
buttons_enable();
// Start execution.
NRF_LOG_INFO("Blinky CENTRAL example started.");
NRF_LOG_INFO("Press button 4 to start scanning.");
// Turn on the LED to signal scanning.
//bsp_board_led_on(CENTRAL_SCANNING_LED);
// Enter main loop.
for (;;)
{
idle_state_handle();
}
}
Output on terminal:
<info> app: Blinky CENTRAL example started.
<info> app: Press button 4 to start scanning.
<info> app: Start scanning.
<info> app: Connected.
<info> app: Discovery done successfully..
<info> ble_db_disc: Found services in.............
<info> ble_db_disc: service count 3
<info> ble_db_disc: Found serviice UUID 1800 and its start handle:1 , End handle: 7, type:1, cuur_srv:0
<info> ble_db_disc: Found serviice UUID 1801 and its start handle:8 , End handle: 11, type:1, cuur_srv:1
<info> ble_db_disc: Found serviice UUID 180A and its start handle:12 , End handle: 20, type:1, cuur_srv:2
<info> ble_db_disc: Found serviice UUID 5D4 and its start handle:0 , End handle: 0, type:0, cuur_srv:3
<info> ble_db_disc: Discovery done successfully..
<info> ble_db_disc: Found services in.............
<info> ble_db_disc: service count 1
<info> ble_db_disc: Found serviice UUID 0 and its start handle:21 , End handle: 65535, type:0, cuur_srv:0
<info> ble_db_disc: Found serviice UUID 1B8E and its start handle:80 , End handle: 8192, type:0, cuur_srv:1
<info> ble_db_disc: Discovery done successfully..
<info> ble_db_disc: Found services in.............
<info> ble_db_disc: service count 0
<info> ble_db_disc: No other service found
characteristics at start: 0
characteristics at end: 0
<info> ble_db_disc: In Charcteristics rsp
Regards,
Prajakta
