Glimworm Beacons / nRF51822

test

Fork of nRF51822 by Nordic Semiconductor

source/nordic-sdk/components/ble/common/ble_conn_params.cpp@448:b71e96a821de, 2015-10-10 (annotated)

Committer:
GlimwormBeacons
Date:
Sat Oct 10 09:19:50 2015 +0000
Revision:
448:b71e96a821de
Parent:
387:b13ab9a7ddb9 
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rgrover1 371:8f7d2137727a 1 /*
rgrover1 371:8f7d2137727a 2 * Copyright (c) Nordic Semiconductor ASA
rgrover1 371:8f7d2137727a 3 * All rights reserved.
rgrover1 371:8f7d2137727a 4 *
rgrover1 371:8f7d2137727a 5 * Redistribution and use in source and binary forms, with or without modification,
rgrover1 371:8f7d2137727a 6 * are permitted provided that the following conditions are met:
rgrover1 371:8f7d2137727a 7 *
rgrover1 371:8f7d2137727a 8 * 1. Redistributions of source code must retain the above copyright notice, this
rgrover1 371:8f7d2137727a 9 * list of conditions and the following disclaimer.
rgrover1 371:8f7d2137727a 10 *
rgrover1 371:8f7d2137727a 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this
rgrover1 371:8f7d2137727a 12 * list of conditions and the following disclaimer in the documentation and/or
rgrover1 371:8f7d2137727a 13 * other materials provided with the distribution.
rgrover1 371:8f7d2137727a 14 *
rgrover1 371:8f7d2137727a 15 * 3. Neither the name of Nordic Semiconductor ASA nor the names of other
rgrover1 371:8f7d2137727a 16 * contributors to this software may be used to endorse or promote products
rgrover1 371:8f7d2137727a 17 * derived from this software without specific prior written permission.
rgrover1 371:8f7d2137727a 18 *
rgrover1 371:8f7d2137727a 19 *
rgrover1 371:8f7d2137727a 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
rgrover1 371:8f7d2137727a 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
rgrover1 371:8f7d2137727a 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
rgrover1 371:8f7d2137727a 23 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
rgrover1 371:8f7d2137727a 24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
rgrover1 371:8f7d2137727a 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
rgrover1 371:8f7d2137727a 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
rgrover1 371:8f7d2137727a 27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
rgrover1 371:8f7d2137727a 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
rgrover1 371:8f7d2137727a 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
rgrover1 371:8f7d2137727a 30 *
rgrover1 371:8f7d2137727a 31 */
rgrover1 371:8f7d2137727a 32
rgrover1 371:8f7d2137727a 33 #include "ble_conn_params.h"
rgrover1 371:8f7d2137727a 34 #include <stdlib.h>
rgrover1 371:8f7d2137727a 35 #include "nordic_common.h"
rgrover1 371:8f7d2137727a 36 #include "ble_hci.h"
rgrover1 371:8f7d2137727a 37 #include "ble_srv_common.h"
rgrover1 371:8f7d2137727a 38 #include "app_util.h"
rgrover1 371:8f7d2137727a 39
rgrover1 371:8f7d2137727a 40 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 41 #include "app_timer.h"
rgrover1 371:8f7d2137727a 42 #else
rgrover1 371:8f7d2137727a 43 #include "mbed.h"
rgrover1 371:8f7d2137727a 44 #endif
rgrover1 371:8f7d2137727a 45
rgrover1 371:8f7d2137727a 46 static ble_conn_params_init_t m_conn_params_config; /**< Configuration as specified by the application. */
rgrover1 371:8f7d2137727a 47 static ble_gap_conn_params_t m_preferred_conn_params; /**< Connection parameters preferred by the application. */
rgrover1 371:8f7d2137727a 48 static uint8_t m_update_count; /**< Number of Connection Parameter Update messages that has currently been sent. */
rgrover1 371:8f7d2137727a 49 static uint16_t m_conn_handle; /**< Current connection handle. */
rgrover1 371:8f7d2137727a 50 static ble_gap_conn_params_t m_current_conn_params; /**< Connection parameters received in the most recent Connect event. */
rgrover1 371:8f7d2137727a 51 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 52 static app_timer_id_t m_conn_params_timer_id; /**< Connection parameters timer. */
rgrover1 371:8f7d2137727a 53 #else
rgrover1 371:8f7d2137727a 54 static Ticker m_conn_params_timer;
rgrover1 371:8f7d2137727a 55 #endif
rgrover1 371:8f7d2137727a 56
rgrover1 371:8f7d2137727a 57 static bool m_change_param = false;
rgrover1 371:8f7d2137727a 58
rgrover1 371:8f7d2137727a 59 static bool is_conn_params_ok(ble_gap_conn_params_t * p_conn_params)
rgrover1 371:8f7d2137727a 60 {
rgrover1 371:8f7d2137727a 61 // Check if interval is within the acceptable range.
rgrover1 371:8f7d2137727a 62 // NOTE: Using max_conn_interval in the received event data because this contains
rgrover1 371:8f7d2137727a 63 // the client's connection interval.
rgrover1 371:8f7d2137727a 64 if (
rgrover1 371:8f7d2137727a 65 (p_conn_params->max_conn_interval >= m_preferred_conn_params.min_conn_interval)
rgrover1 371:8f7d2137727a 66 &&
rgrover1 371:8f7d2137727a 67 (p_conn_params->max_conn_interval <= m_preferred_conn_params.max_conn_interval)
rgrover1 371:8f7d2137727a 68 )
rgrover1 371:8f7d2137727a 69 {
rgrover1 371:8f7d2137727a 70 return true;
rgrover1 371:8f7d2137727a 71 }
rgrover1 371:8f7d2137727a 72 else
rgrover1 371:8f7d2137727a 73 {
rgrover1 371:8f7d2137727a 74 return false;
rgrover1 371:8f7d2137727a 75 }
rgrover1 371:8f7d2137727a 76 }
rgrover1 371:8f7d2137727a 77
rgrover1 371:8f7d2137727a 78
rgrover1 371:8f7d2137727a 79 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 80 static void update_timeout_handler(void * p_context)
rgrover1 371:8f7d2137727a 81 {
rgrover1 371:8f7d2137727a 82 UNUSED_PARAMETER(p_context);
rgrover1 371:8f7d2137727a 83
rgrover1 371:8f7d2137727a 84 #else /* #if !USE_APP_TIMER */
rgrover1 371:8f7d2137727a 85 static void update_timeout_handler(void)
rgrover1 371:8f7d2137727a 86 {
rgrover1 371:8f7d2137727a 87 m_conn_params_timer.detach(); /* this is supposed to be a single-shot timer callback */
rgrover1 371:8f7d2137727a 88 #endif /* #if !USE_APP_TIMER */
rgrover1 371:8f7d2137727a 89 if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
rgrover1 371:8f7d2137727a 90 {
rgrover1 371:8f7d2137727a 91 // Check if we have reached the maximum number of attempts
rgrover1 371:8f7d2137727a 92 m_update_count++;
rgrover1 371:8f7d2137727a 93 if (m_update_count <= m_conn_params_config.max_conn_params_update_count)
rgrover1 371:8f7d2137727a 94 {
rgrover1 371:8f7d2137727a 95 uint32_t err_code;
rgrover1 371:8f7d2137727a 96
rgrover1 371:8f7d2137727a 97 // Parameters are not ok, send connection parameters update request.
rgrover1 371:8f7d2137727a 98 err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params);
rgrover1 371:8f7d2137727a 99 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
rgrover1 371:8f7d2137727a 100 {
rgrover1 371:8f7d2137727a 101 m_conn_params_config.error_handler(err_code);
rgrover1 371:8f7d2137727a 102 }
rgrover1 371:8f7d2137727a 103 }
rgrover1 371:8f7d2137727a 104 else
rgrover1 371:8f7d2137727a 105 {
rgrover1 371:8f7d2137727a 106 m_update_count = 0;
rgrover1 371:8f7d2137727a 107
rgrover1 371:8f7d2137727a 108 // Negotiation failed, disconnect automatically if this has been configured
rgrover1 371:8f7d2137727a 109 if (m_conn_params_config.disconnect_on_fail)
rgrover1 371:8f7d2137727a 110 {
rgrover1 371:8f7d2137727a 111 uint32_t err_code;
rgrover1 371:8f7d2137727a 112
rgrover1 371:8f7d2137727a 113 err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
rgrover1 371:8f7d2137727a 114 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
rgrover1 371:8f7d2137727a 115 {
rgrover1 371:8f7d2137727a 116 m_conn_params_config.error_handler(err_code);
rgrover1 371:8f7d2137727a 117 }
rgrover1 371:8f7d2137727a 118 }
rgrover1 371:8f7d2137727a 119
rgrover1 371:8f7d2137727a 120 // Notify the application that the procedure has failed
rgrover1 371:8f7d2137727a 121 if (m_conn_params_config.evt_handler != NULL)
rgrover1 371:8f7d2137727a 122 {
rgrover1 371:8f7d2137727a 123 ble_conn_params_evt_t evt;
rgrover1 371:8f7d2137727a 124
rgrover1 371:8f7d2137727a 125 evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED;
rgrover1 371:8f7d2137727a 126 m_conn_params_config.evt_handler(&evt);
rgrover1 371:8f7d2137727a 127 }
rgrover1 371:8f7d2137727a 128 }
rgrover1 371:8f7d2137727a 129 }
rgrover1 371:8f7d2137727a 130 }
rgrover1 371:8f7d2137727a 131
rgrover1 371:8f7d2137727a 132
rgrover1 371:8f7d2137727a 133 uint32_t ble_conn_params_init(const ble_conn_params_init_t * p_init)
rgrover1 371:8f7d2137727a 134 {
rgrover1 371:8f7d2137727a 135 uint32_t err_code;
rgrover1 371:8f7d2137727a 136
rgrover1 371:8f7d2137727a 137 m_conn_params_config = *p_init;
rgrover1 371:8f7d2137727a 138 m_change_param = false;
rgrover1 371:8f7d2137727a 139 if (p_init->p_conn_params != NULL)
rgrover1 371:8f7d2137727a 140 {
rgrover1 371:8f7d2137727a 141 m_preferred_conn_params = *p_init->p_conn_params;
rgrover1 371:8f7d2137727a 142
rgrover1 371:8f7d2137727a 143 // Set the connection params in stack
rgrover1 371:8f7d2137727a 144 err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params);
rgrover1 371:8f7d2137727a 145 if (err_code != NRF_SUCCESS)
rgrover1 371:8f7d2137727a 146 {
rgrover1 371:8f7d2137727a 147 return err_code;
rgrover1 371:8f7d2137727a 148 }
rgrover1 371:8f7d2137727a 149 }
rgrover1 371:8f7d2137727a 150 else
rgrover1 371:8f7d2137727a 151 {
rgrover1 371:8f7d2137727a 152 // Fetch the connection params from stack
rgrover1 371:8f7d2137727a 153 err_code = sd_ble_gap_ppcp_get(&m_preferred_conn_params);
rgrover1 371:8f7d2137727a 154 if (err_code != NRF_SUCCESS)
rgrover1 371:8f7d2137727a 155 {
rgrover1 371:8f7d2137727a 156 return err_code;
rgrover1 371:8f7d2137727a 157 }
rgrover1 371:8f7d2137727a 158 }
rgrover1 371:8f7d2137727a 159
rgrover1 371:8f7d2137727a 160 m_conn_handle = BLE_CONN_HANDLE_INVALID;
rgrover1 371:8f7d2137727a 161 m_update_count = 0;
rgrover1 371:8f7d2137727a 162
rgrover1 371:8f7d2137727a 163 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 164 return app_timer_create(&m_conn_params_timer_id,
rgrover1 371:8f7d2137727a 165 APP_TIMER_MODE_SINGLE_SHOT,
rgrover1 371:8f7d2137727a 166 update_timeout_handler);
rgrover1 371:8f7d2137727a 167 #else
rgrover1 371:8f7d2137727a 168 return NRF_SUCCESS;
rgrover1 371:8f7d2137727a 169 #endif
rgrover1 371:8f7d2137727a 170 }
rgrover1 371:8f7d2137727a 171
rgrover1 371:8f7d2137727a 172
rgrover1 371:8f7d2137727a 173 uint32_t ble_conn_params_stop(void)
rgrover1 371:8f7d2137727a 174 {
rgrover1 371:8f7d2137727a 175 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 176 return app_timer_stop(m_conn_params_timer_id);
rgrover1 371:8f7d2137727a 177 #else /* #if !USE_APP_TIMER */
rgrover1 371:8f7d2137727a 178 m_conn_params_timer.detach();
rgrover1 371:8f7d2137727a 179 return NRF_SUCCESS;
rgrover1 371:8f7d2137727a 180 #endif /* #if !USE_APP_TIMER */
rgrover1 371:8f7d2137727a 181 }
rgrover1 371:8f7d2137727a 182
rgrover1 371:8f7d2137727a 183
rgrover1 371:8f7d2137727a 184 static void conn_params_negotiation(void)
rgrover1 371:8f7d2137727a 185 {
rgrover1 371:8f7d2137727a 186 // Start negotiation if the received connection parameters are not acceptable
rgrover1 371:8f7d2137727a 187 if (!is_conn_params_ok(&m_current_conn_params))
rgrover1 371:8f7d2137727a 188 {
rgrover1 371:8f7d2137727a 189 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 190 uint32_t err_code;
rgrover1 371:8f7d2137727a 191 #endif
rgrover1 371:8f7d2137727a 192 uint32_t timeout_ticks;
rgrover1 371:8f7d2137727a 193
rgrover1 371:8f7d2137727a 194 if (m_change_param)
rgrover1 371:8f7d2137727a 195 {
rgrover1 371:8f7d2137727a 196 // Notify the application that the procedure has failed
rgrover1 371:8f7d2137727a 197 if (m_conn_params_config.evt_handler != NULL)
rgrover1 371:8f7d2137727a 198 {
rgrover1 371:8f7d2137727a 199 ble_conn_params_evt_t evt;
rgrover1 371:8f7d2137727a 200
rgrover1 371:8f7d2137727a 201 evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED;
rgrover1 371:8f7d2137727a 202 m_conn_params_config.evt_handler(&evt);
rgrover1 371:8f7d2137727a 203 }
rgrover1 371:8f7d2137727a 204 }
rgrover1 371:8f7d2137727a 205 else
rgrover1 371:8f7d2137727a 206 {
rgrover1 371:8f7d2137727a 207 if (m_update_count == 0)
rgrover1 371:8f7d2137727a 208 {
rgrover1 371:8f7d2137727a 209 // First connection parameter update
rgrover1 371:8f7d2137727a 210 timeout_ticks = m_conn_params_config.first_conn_params_update_delay;
rgrover1 371:8f7d2137727a 211 }
rgrover1 371:8f7d2137727a 212 else
rgrover1 371:8f7d2137727a 213 {
rgrover1 371:8f7d2137727a 214 timeout_ticks = m_conn_params_config.next_conn_params_update_delay;
rgrover1 371:8f7d2137727a 215 }
rgrover1 371:8f7d2137727a 216
rgrover1 371:8f7d2137727a 217 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 218 err_code = app_timer_start(m_conn_params_timer_id, timeout_ticks, NULL);
rgrover1 371:8f7d2137727a 219 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
rgrover1 371:8f7d2137727a 220 {
rgrover1 371:8f7d2137727a 221 m_conn_params_config.error_handler(err_code);
rgrover1 371:8f7d2137727a 222 }
rgrover1 371:8f7d2137727a 223 #else
rgrover1 371:8f7d2137727a 224 m_conn_params_timer.attach(update_timeout_handler, timeout_ticks / 32768);
rgrover1 371:8f7d2137727a 225 #endif
rgrover1 371:8f7d2137727a 226 }
rgrover1 371:8f7d2137727a 227 }
rgrover1 371:8f7d2137727a 228 else
rgrover1 371:8f7d2137727a 229 {
rgrover1 371:8f7d2137727a 230 // Notify the application that the procedure has succeded
rgrover1 371:8f7d2137727a 231 if (m_conn_params_config.evt_handler != NULL)
rgrover1 371:8f7d2137727a 232 {
rgrover1 371:8f7d2137727a 233 ble_conn_params_evt_t evt;
rgrover1 371:8f7d2137727a 234
rgrover1 371:8f7d2137727a 235 evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED;
rgrover1 371:8f7d2137727a 236 m_conn_params_config.evt_handler(&evt);
rgrover1 371:8f7d2137727a 237 }
rgrover1 371:8f7d2137727a 238 }
rgrover1 371:8f7d2137727a 239 m_change_param = false;
rgrover1 371:8f7d2137727a 240 }
rgrover1 371:8f7d2137727a 241
rgrover1 371:8f7d2137727a 242
rgrover1 371:8f7d2137727a 243 static void on_connect(ble_evt_t * p_ble_evt)
rgrover1 371:8f7d2137727a 244 {
rgrover1 371:8f7d2137727a 245 // Save connection parameters
rgrover1 371:8f7d2137727a 246 m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
rgrover1 371:8f7d2137727a 247 m_current_conn_params = p_ble_evt->evt.gap_evt.params.connected.conn_params;
rgrover1 371:8f7d2137727a 248 m_update_count = 0; // Connection parameter negotiation should re-start every connection
rgrover1 371:8f7d2137727a 249
rgrover1 371:8f7d2137727a 250 // Check if we shall handle negotiation on connect
rgrover1 371:8f7d2137727a 251 if (m_conn_params_config.start_on_notify_cccd_handle == BLE_GATT_HANDLE_INVALID)
rgrover1 371:8f7d2137727a 252 {
rgrover1 371:8f7d2137727a 253 conn_params_negotiation();
rgrover1 371:8f7d2137727a 254 }
rgrover1 371:8f7d2137727a 255 }
rgrover1 371:8f7d2137727a 256
rgrover1 371:8f7d2137727a 257
rgrover1 371:8f7d2137727a 258 static void on_disconnect(ble_evt_t * p_ble_evt)
rgrover1 371:8f7d2137727a 259 {
rgrover1 371:8f7d2137727a 260 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 261 uint32_t err_code;
rgrover1 371:8f7d2137727a 262 #endif
rgrover1 371:8f7d2137727a 263
rgrover1 371:8f7d2137727a 264 m_conn_handle = BLE_CONN_HANDLE_INVALID;
rgrover1 371:8f7d2137727a 265
rgrover1 371:8f7d2137727a 266 // Stop timer if running
rgrover1 371:8f7d2137727a 267 m_update_count = 0; // Connection parameters updates should happen during every connection
rgrover1 371:8f7d2137727a 268
rgrover1 371:8f7d2137727a 269 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 270 err_code = app_timer_stop(m_conn_params_timer_id);
rgrover1 371:8f7d2137727a 271 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
rgrover1 371:8f7d2137727a 272 {
rgrover1 371:8f7d2137727a 273 m_conn_params_config.error_handler(err_code);
rgrover1 371:8f7d2137727a 274 }
rgrover1 371:8f7d2137727a 275 #else
rgrover1 371:8f7d2137727a 276 m_conn_params_timer.detach();
rgrover1 371:8f7d2137727a 277 #endif
rgrover1 371:8f7d2137727a 278 }
rgrover1 371:8f7d2137727a 279
rgrover1 371:8f7d2137727a 280
rgrover1 371:8f7d2137727a 281 static void on_write(ble_evt_t * p_ble_evt)
rgrover1 371:8f7d2137727a 282 {
rgrover1 371:8f7d2137727a 283 ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
rgrover1 371:8f7d2137727a 284
rgrover1 371:8f7d2137727a 285 // Check if this the correct CCCD
rgrover1 371:8f7d2137727a 286 if (
rgrover1 371:8f7d2137727a 287 (p_evt_write->handle == m_conn_params_config.start_on_notify_cccd_handle)
rgrover1 371:8f7d2137727a 288 &&
rgrover1 371:8f7d2137727a 289 (p_evt_write->len == 2)
rgrover1 371:8f7d2137727a 290 )
rgrover1 371:8f7d2137727a 291 {
rgrover1 371:8f7d2137727a 292 // Check if this is a 'start notification'
rgrover1 371:8f7d2137727a 293 if (ble_srv_is_notification_enabled(p_evt_write->data))
rgrover1 371:8f7d2137727a 294 {
rgrover1 371:8f7d2137727a 295 // Do connection parameter negotiation if necessary
rgrover1 371:8f7d2137727a 296 conn_params_negotiation();
rgrover1 371:8f7d2137727a 297 }
rgrover1 371:8f7d2137727a 298 else
rgrover1 371:8f7d2137727a 299 {
rgrover1 371:8f7d2137727a 300 #ifdef USE_APP_TIMER
rgrover1 371:8f7d2137727a 301 uint32_t err_code;
rgrover1 371:8f7d2137727a 302
rgrover1 371:8f7d2137727a 303 // Stop timer if running
rgrover1 371:8f7d2137727a 304 err_code = app_timer_stop(m_conn_params_timer_id);
rgrover1 371:8f7d2137727a 305 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
rgrover1 371:8f7d2137727a 306 {
rgrover1 371:8f7d2137727a 307 m_conn_params_config.error_handler(err_code);
rgrover1 371:8f7d2137727a 308 }
rgrover1 371:8f7d2137727a 309 #else /* #if !USE_APP_TIMER */
rgrover1 371:8f7d2137727a 310 m_conn_params_timer.detach();
rgrover1 371:8f7d2137727a 311 #endif /* #if !USE_APP_TIMER */
rgrover1 371:8f7d2137727a 312 }
rgrover1 371:8f7d2137727a 313 }
rgrover1 371:8f7d2137727a 314 }
rgrover1 371:8f7d2137727a 315
rgrover1 371:8f7d2137727a 316
rgrover1 371:8f7d2137727a 317 static void on_conn_params_update(ble_evt_t * p_ble_evt)
rgrover1 371:8f7d2137727a 318 {
rgrover1 371:8f7d2137727a 319 // Copy the parameters
rgrover1 371:8f7d2137727a 320 m_current_conn_params = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params;
rgrover1 371:8f7d2137727a 321
rgrover1 371:8f7d2137727a 322 conn_params_negotiation();
rgrover1 371:8f7d2137727a 323 }
rgrover1 371:8f7d2137727a 324
rgrover1 371:8f7d2137727a 325
rgrover1 371:8f7d2137727a 326 void ble_conn_params_on_ble_evt(ble_evt_t * p_ble_evt)
rgrover1 371:8f7d2137727a 327 {
rgrover1 371:8f7d2137727a 328 switch (p_ble_evt->header.evt_id)
rgrover1 371:8f7d2137727a 329 {
rgrover1 371:8f7d2137727a 330 case BLE_GAP_EVT_CONNECTED:
rgrover1 371:8f7d2137727a 331 on_connect(p_ble_evt);
rgrover1 371:8f7d2137727a 332 break;
rgrover1 371:8f7d2137727a 333
rgrover1 371:8f7d2137727a 334 case BLE_GAP_EVT_DISCONNECTED:
rgrover1 371:8f7d2137727a 335 on_disconnect(p_ble_evt);
rgrover1 371:8f7d2137727a 336 break;
rgrover1 371:8f7d2137727a 337
rgrover1 371:8f7d2137727a 338 case BLE_GATTS_EVT_WRITE:
rgrover1 371:8f7d2137727a 339 on_write(p_ble_evt);
rgrover1 371:8f7d2137727a 340 break;
rgrover1 371:8f7d2137727a 341
rgrover1 371:8f7d2137727a 342 case BLE_GAP_EVT_CONN_PARAM_UPDATE:
rgrover1 371:8f7d2137727a 343 on_conn_params_update(p_ble_evt);
rgrover1 371:8f7d2137727a 344 break;
rgrover1 371:8f7d2137727a 345
rgrover1 371:8f7d2137727a 346 default:
rgrover1 371:8f7d2137727a 347 // No implementation needed.
rgrover1 371:8f7d2137727a 348 break;
rgrover1 371:8f7d2137727a 349 }
rgrover1 371:8f7d2137727a 350 }
rgrover1 371:8f7d2137727a 351
rgrover1 371:8f7d2137727a 352 uint32_t ble_conn_params_change_conn_params(ble_gap_conn_params_t *new_params)
rgrover1 371:8f7d2137727a 353 {
rgrover1 371:8f7d2137727a 354 uint32_t err_code;
rgrover1 371:8f7d2137727a 355
rgrover1 371:8f7d2137727a 356 m_preferred_conn_params = *new_params;
rgrover1 371:8f7d2137727a 357 // Set the connection params in stack
rgrover1 371:8f7d2137727a 358 err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params);
rgrover1 371:8f7d2137727a 359 if (err_code == NRF_SUCCESS)
rgrover1 371:8f7d2137727a 360 {
rgrover1 371:8f7d2137727a 361 if (!is_conn_params_ok(&m_current_conn_params))
rgrover1 371:8f7d2137727a 362 {
rgrover1 371:8f7d2137727a 363 m_change_param = true;
rgrover1 371:8f7d2137727a 364 err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params);
rgrover1 371:8f7d2137727a 365 m_update_count = 1;
rgrover1 371:8f7d2137727a 366 }
rgrover1 371:8f7d2137727a 367 else
rgrover1 371:8f7d2137727a 368 {
rgrover1 371:8f7d2137727a 369 // Notify the application that the procedure has succeded
rgrover1 371:8f7d2137727a 370 if (m_conn_params_config.evt_handler != NULL)
rgrover1 371:8f7d2137727a 371 {
rgrover1 371:8f7d2137727a 372 ble_conn_params_evt_t evt;
rgrover1 371:8f7d2137727a 373
rgrover1 371:8f7d2137727a 374 evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED;
rgrover1 371:8f7d2137727a 375 m_conn_params_config.evt_handler(&evt);
rgrover1 371:8f7d2137727a 376 }
rgrover1 371:8f7d2137727a 377 err_code = NRF_SUCCESS;
rgrover1 371:8f7d2137727a 378 }
rgrover1 371:8f7d2137727a 379 }
rgrover1 371:8f7d2137727a 380 return err_code;
rgrover1 371:8f7d2137727a 381 }