Thomas Butler
cvb
Fork of
nrf51-sdk
by 
Lancaster University
source/nordic_sdk/components/ble/common/ble_conn_params.cpp@9:d3dd910b0f4b, 2018-08-14 (annotated)
- Committer:
- tb942
- Date:
- Tue Aug 14 18:27:20 2018 +0000
- Revision:
- 9:d3dd910b0f4b
- Parent:
- 0:bc2961fa1ef0
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| Jonathan Austin |
0:bc2961fa1ef0 | 1 | /* |
| Jonathan Austin |
0:bc2961fa1ef0 | 2 | * Copyright (c) Nordic Semiconductor ASA |
| Jonathan Austin |
0:bc2961fa1ef0 | 3 | * All rights reserved. |
| Jonathan Austin |
0:bc2961fa1ef0 | 4 | * |
| Jonathan Austin |
0:bc2961fa1ef0 | 5 | * Redistribution and use in source and binary forms, with or without modification, |
| Jonathan Austin |
0:bc2961fa1ef0 | 6 | * are permitted provided that the following conditions are met: |
| Jonathan Austin |
0:bc2961fa1ef0 | 7 | * |
| Jonathan Austin |
0:bc2961fa1ef0 | 8 | * 1. Redistributions of source code must retain the above copyright notice, this |
| Jonathan Austin |
0:bc2961fa1ef0 | 9 | * list of conditions and the following disclaimer. |
| Jonathan Austin |
0:bc2961fa1ef0 | 10 | * |
| Jonathan Austin |
0:bc2961fa1ef0 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, this |
| Jonathan Austin |
0:bc2961fa1ef0 | 12 | * list of conditions and the following disclaimer in the documentation and/or |
| Jonathan Austin |
0:bc2961fa1ef0 | 13 | * other materials provided with the distribution. |
| Jonathan Austin |
0:bc2961fa1ef0 | 14 | * |
| Jonathan Austin |
0:bc2961fa1ef0 | 15 | * 3. Neither the name of Nordic Semiconductor ASA nor the names of other |
| Jonathan Austin |
0:bc2961fa1ef0 | 16 | * contributors to this software may be used to endorse or promote products |
| Jonathan Austin |
0:bc2961fa1ef0 | 17 | * derived from this software without specific prior written permission. |
| Jonathan Austin |
0:bc2961fa1ef0 | 18 | * |
| Jonathan Austin |
0:bc2961fa1ef0 | 19 | * |
| Jonathan Austin |
0:bc2961fa1ef0 | 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| Jonathan Austin |
0:bc2961fa1ef0 | 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| Jonathan Austin |
0:bc2961fa1ef0 | 22 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| Jonathan Austin |
0:bc2961fa1ef0 | 23 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR |
| Jonathan Austin |
0:bc2961fa1ef0 | 24 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| Jonathan Austin |
0:bc2961fa1ef0 | 25 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| Jonathan Austin |
0:bc2961fa1ef0 | 26 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| Jonathan Austin |
0:bc2961fa1ef0 | 27 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| Jonathan Austin |
0:bc2961fa1ef0 | 28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| Jonathan Austin |
0:bc2961fa1ef0 | 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| Jonathan Austin |
0:bc2961fa1ef0 | 30 | * |
| Jonathan Austin |
0:bc2961fa1ef0 | 31 | */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 32 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 33 | #include "ble_conn_params.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 34 | #include <stdlib.h> |
| Jonathan Austin |
0:bc2961fa1ef0 | 35 | #include "nordic_common.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 36 | #include "ble_hci.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 37 | #include "ble_srv_common.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 38 | #include "app_util.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 39 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 40 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 41 | #include "app_timer.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 42 | #else |
| Jonathan Austin |
0:bc2961fa1ef0 | 43 | #ifdef YOTTA_CFG_MBED_OS |
| Jonathan Austin |
0:bc2961fa1ef0 | 44 | #include "mbed-drivers/mbed.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 45 | #else |
| Jonathan Austin |
0:bc2961fa1ef0 | 46 | #include "mbed.h" |
| Jonathan Austin |
0:bc2961fa1ef0 | 47 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 48 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 49 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 50 | static ble_conn_params_init_t m_conn_params_config; /**< Configuration as specified by the application. */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 51 | static ble_gap_conn_params_t m_preferred_conn_params; /**< Connection parameters preferred by the application. */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 52 | static uint8_t m_update_count; /**< Number of Connection Parameter Update messages that has currently been sent. */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 53 | static uint16_t m_conn_handle; /**< Current connection handle. */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 54 | static ble_gap_conn_params_t m_current_conn_params; /**< Connection parameters received in the most recent Connect event. */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 55 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 56 | static app_timer_id_t m_conn_params_timer_id; /**< Connection parameters timer. */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 57 | #else |
| Jonathan Austin |
0:bc2961fa1ef0 | 58 | static Ticker m_conn_params_timer; |
| Jonathan Austin |
0:bc2961fa1ef0 | 59 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 60 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 61 | static bool m_change_param = false; |
| Jonathan Austin |
0:bc2961fa1ef0 | 62 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 63 | static bool is_conn_params_ok(ble_gap_conn_params_t * p_conn_params) |
| Jonathan Austin |
0:bc2961fa1ef0 | 64 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 65 | // Check if interval is within the acceptable range. |
| Jonathan Austin |
0:bc2961fa1ef0 | 66 | // NOTE: Using max_conn_interval in the received event data because this contains |
| Jonathan Austin |
0:bc2961fa1ef0 | 67 | // the client's connection interval. |
| Jonathan Austin |
0:bc2961fa1ef0 | 68 | if ( |
| Jonathan Austin |
0:bc2961fa1ef0 | 69 | (p_conn_params->max_conn_interval >= m_preferred_conn_params.min_conn_interval) |
| Jonathan Austin |
0:bc2961fa1ef0 | 70 | && |
| Jonathan Austin |
0:bc2961fa1ef0 | 71 | (p_conn_params->max_conn_interval <= m_preferred_conn_params.max_conn_interval) |
| Jonathan Austin |
0:bc2961fa1ef0 | 72 | ) |
| Jonathan Austin |
0:bc2961fa1ef0 | 73 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 74 | return true; |
| Jonathan Austin |
0:bc2961fa1ef0 | 75 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 76 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 77 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 78 | return false; |
| Jonathan Austin |
0:bc2961fa1ef0 | 79 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 80 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 81 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 82 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 83 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 84 | static void update_timeout_handler(void * p_context) |
| Jonathan Austin |
0:bc2961fa1ef0 | 85 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 86 | UNUSED_PARAMETER(p_context); |
| Jonathan Austin |
0:bc2961fa1ef0 | 87 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 88 | #else /* #if !USE_APP_TIMER */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 89 | static void update_timeout_handler(void) |
| Jonathan Austin |
0:bc2961fa1ef0 | 90 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 91 | m_conn_params_timer.detach(); /* this is supposed to be a single-shot timer callback */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 92 | #endif /* #if !USE_APP_TIMER */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 93 | if (m_conn_handle != BLE_CONN_HANDLE_INVALID) |
| Jonathan Austin |
0:bc2961fa1ef0 | 94 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 95 | // Check if we have reached the maximum number of attempts |
| Jonathan Austin |
0:bc2961fa1ef0 | 96 | m_update_count++; |
| Jonathan Austin |
0:bc2961fa1ef0 | 97 | if (m_update_count <= m_conn_params_config.max_conn_params_update_count) |
| Jonathan Austin |
0:bc2961fa1ef0 | 98 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 99 | uint32_t err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 100 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 101 | // Parameters are not ok, send connection parameters update request. |
| Jonathan Austin |
0:bc2961fa1ef0 | 102 | err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params); |
| Jonathan Austin |
0:bc2961fa1ef0 | 103 | if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 104 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 105 | m_conn_params_config.error_handler(err_code); |
| Jonathan Austin |
0:bc2961fa1ef0 | 106 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 107 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 108 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 109 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 110 | m_update_count = 0; |
| Jonathan Austin |
0:bc2961fa1ef0 | 111 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 112 | // Negotiation failed, disconnect automatically if this has been configured |
| Jonathan Austin |
0:bc2961fa1ef0 | 113 | if (m_conn_params_config.disconnect_on_fail) |
| Jonathan Austin |
0:bc2961fa1ef0 | 114 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 115 | uint32_t err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 116 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 117 | err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE); |
| Jonathan Austin |
0:bc2961fa1ef0 | 118 | if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 119 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 120 | m_conn_params_config.error_handler(err_code); |
| Jonathan Austin |
0:bc2961fa1ef0 | 121 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 122 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 123 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 124 | // Notify the application that the procedure has failed |
| Jonathan Austin |
0:bc2961fa1ef0 | 125 | if (m_conn_params_config.evt_handler != NULL) |
| Jonathan Austin |
0:bc2961fa1ef0 | 126 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 127 | ble_conn_params_evt_t evt; |
| Jonathan Austin |
0:bc2961fa1ef0 | 128 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 129 | evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED; |
| Jonathan Austin |
0:bc2961fa1ef0 | 130 | m_conn_params_config.evt_handler(&evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 131 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 132 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 133 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 134 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 135 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 136 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 137 | uint32_t ble_conn_params_init(const ble_conn_params_init_t * p_init) |
| Jonathan Austin |
0:bc2961fa1ef0 | 138 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 139 | uint32_t err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 140 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 141 | m_conn_params_config = *p_init; |
| Jonathan Austin |
0:bc2961fa1ef0 | 142 | m_change_param = false; |
| Jonathan Austin |
0:bc2961fa1ef0 | 143 | if (p_init->p_conn_params != NULL) |
| Jonathan Austin |
0:bc2961fa1ef0 | 144 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 145 | m_preferred_conn_params = *p_init->p_conn_params; |
| Jonathan Austin |
0:bc2961fa1ef0 | 146 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 147 | // Set the connection params in stack |
| Jonathan Austin |
0:bc2961fa1ef0 | 148 | err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params); |
| Jonathan Austin |
0:bc2961fa1ef0 | 149 | if (err_code != NRF_SUCCESS) |
| Jonathan Austin |
0:bc2961fa1ef0 | 150 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 151 | return err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 152 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 153 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 154 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 155 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 156 | // Fetch the connection params from stack |
| Jonathan Austin |
0:bc2961fa1ef0 | 157 | err_code = sd_ble_gap_ppcp_get(&m_preferred_conn_params); |
| Jonathan Austin |
0:bc2961fa1ef0 | 158 | if (err_code != NRF_SUCCESS) |
| Jonathan Austin |
0:bc2961fa1ef0 | 159 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 160 | return err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 161 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 162 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 163 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 164 | m_conn_handle = BLE_CONN_HANDLE_INVALID; |
| Jonathan Austin |
0:bc2961fa1ef0 | 165 | m_update_count = 0; |
| Jonathan Austin |
0:bc2961fa1ef0 | 166 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 167 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 168 | return app_timer_create(&m_conn_params_timer_id, |
| Jonathan Austin |
0:bc2961fa1ef0 | 169 | APP_TIMER_MODE_SINGLE_SHOT, |
| Jonathan Austin |
0:bc2961fa1ef0 | 170 | update_timeout_handler); |
| Jonathan Austin |
0:bc2961fa1ef0 | 171 | #else |
| Jonathan Austin |
0:bc2961fa1ef0 | 172 | return NRF_SUCCESS; |
| Jonathan Austin |
0:bc2961fa1ef0 | 173 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 174 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 175 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 176 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 177 | uint32_t ble_conn_params_stop(void) |
| Jonathan Austin |
0:bc2961fa1ef0 | 178 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 179 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 180 | return app_timer_stop(m_conn_params_timer_id); |
| Jonathan Austin |
0:bc2961fa1ef0 | 181 | #else /* #if !USE_APP_TIMER */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 182 | m_conn_params_timer.detach(); |
| Jonathan Austin |
0:bc2961fa1ef0 | 183 | return NRF_SUCCESS; |
| Jonathan Austin |
0:bc2961fa1ef0 | 184 | #endif /* #if !USE_APP_TIMER */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 185 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 186 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 187 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 188 | static void conn_params_negotiation(void) |
| Jonathan Austin |
0:bc2961fa1ef0 | 189 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 190 | // Start negotiation if the received connection parameters are not acceptable |
| Jonathan Austin |
0:bc2961fa1ef0 | 191 | if (!is_conn_params_ok(&m_current_conn_params)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 192 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 193 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 194 | uint32_t err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 195 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 196 | uint32_t timeout_ticks; |
| Jonathan Austin |
0:bc2961fa1ef0 | 197 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 198 | if (m_change_param) |
| Jonathan Austin |
0:bc2961fa1ef0 | 199 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 200 | // Notify the application that the procedure has failed |
| Jonathan Austin |
0:bc2961fa1ef0 | 201 | if (m_conn_params_config.evt_handler != NULL) |
| Jonathan Austin |
0:bc2961fa1ef0 | 202 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 203 | ble_conn_params_evt_t evt; |
| Jonathan Austin |
0:bc2961fa1ef0 | 204 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 205 | evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED; |
| Jonathan Austin |
0:bc2961fa1ef0 | 206 | m_conn_params_config.evt_handler(&evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 207 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 208 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 209 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 210 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 211 | if (m_update_count == 0) |
| Jonathan Austin |
0:bc2961fa1ef0 | 212 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 213 | // First connection parameter update |
| Jonathan Austin |
0:bc2961fa1ef0 | 214 | timeout_ticks = m_conn_params_config.first_conn_params_update_delay; |
| Jonathan Austin |
0:bc2961fa1ef0 | 215 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 216 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 217 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 218 | timeout_ticks = m_conn_params_config.next_conn_params_update_delay; |
| Jonathan Austin |
0:bc2961fa1ef0 | 219 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 220 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 221 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 222 | err_code = app_timer_start(m_conn_params_timer_id, timeout_ticks, NULL); |
| Jonathan Austin |
0:bc2961fa1ef0 | 223 | if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 224 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 225 | m_conn_params_config.error_handler(err_code); |
| Jonathan Austin |
0:bc2961fa1ef0 | 226 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 227 | #else |
| Jonathan Austin |
0:bc2961fa1ef0 | 228 | m_conn_params_timer.attach(update_timeout_handler, timeout_ticks / 32768); |
| Jonathan Austin |
0:bc2961fa1ef0 | 229 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 230 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 231 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 232 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 233 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 234 | // Notify the application that the procedure has succeded |
| Jonathan Austin |
0:bc2961fa1ef0 | 235 | if (m_conn_params_config.evt_handler != NULL) |
| Jonathan Austin |
0:bc2961fa1ef0 | 236 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 237 | ble_conn_params_evt_t evt; |
| Jonathan Austin |
0:bc2961fa1ef0 | 238 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 239 | evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED; |
| Jonathan Austin |
0:bc2961fa1ef0 | 240 | m_conn_params_config.evt_handler(&evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 241 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 242 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 243 | m_change_param = false; |
| Jonathan Austin |
0:bc2961fa1ef0 | 244 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 245 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 246 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 247 | static void on_connect(ble_evt_t * p_ble_evt) |
| Jonathan Austin |
0:bc2961fa1ef0 | 248 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 249 | // Save connection parameters |
| Jonathan Austin |
0:bc2961fa1ef0 | 250 | m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle; |
| Jonathan Austin |
0:bc2961fa1ef0 | 251 | m_current_conn_params = p_ble_evt->evt.gap_evt.params.connected.conn_params; |
| Jonathan Austin |
0:bc2961fa1ef0 | 252 | m_update_count = 0; // Connection parameter negotiation should re-start every connection |
| Jonathan Austin |
0:bc2961fa1ef0 | 253 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 254 | // Check if we shall handle negotiation on connect |
| Jonathan Austin |
0:bc2961fa1ef0 | 255 | if (m_conn_params_config.start_on_notify_cccd_handle == BLE_GATT_HANDLE_INVALID) |
| Jonathan Austin |
0:bc2961fa1ef0 | 256 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 257 | conn_params_negotiation(); |
| Jonathan Austin |
0:bc2961fa1ef0 | 258 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 259 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 260 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 261 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 262 | static void on_disconnect(ble_evt_t * p_ble_evt) |
| Jonathan Austin |
0:bc2961fa1ef0 | 263 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 264 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 265 | uint32_t err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 266 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 267 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 268 | m_conn_handle = BLE_CONN_HANDLE_INVALID; |
| Jonathan Austin |
0:bc2961fa1ef0 | 269 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 270 | // Stop timer if running |
| Jonathan Austin |
0:bc2961fa1ef0 | 271 | m_update_count = 0; // Connection parameters updates should happen during every connection |
| Jonathan Austin |
0:bc2961fa1ef0 | 272 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 273 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 274 | err_code = app_timer_stop(m_conn_params_timer_id); |
| Jonathan Austin |
0:bc2961fa1ef0 | 275 | if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 276 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 277 | m_conn_params_config.error_handler(err_code); |
| Jonathan Austin |
0:bc2961fa1ef0 | 278 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 279 | #else |
| Jonathan Austin |
0:bc2961fa1ef0 | 280 | m_conn_params_timer.detach(); |
| Jonathan Austin |
0:bc2961fa1ef0 | 281 | #endif |
| Jonathan Austin |
0:bc2961fa1ef0 | 282 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 283 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 284 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 285 | static void on_write(ble_evt_t * p_ble_evt) |
| Jonathan Austin |
0:bc2961fa1ef0 | 286 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 287 | ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; |
| Jonathan Austin |
0:bc2961fa1ef0 | 288 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 289 | // Check if this the correct CCCD |
| Jonathan Austin |
0:bc2961fa1ef0 | 290 | if ( |
| Jonathan Austin |
0:bc2961fa1ef0 | 291 | (p_evt_write->handle == m_conn_params_config.start_on_notify_cccd_handle) |
| Jonathan Austin |
0:bc2961fa1ef0 | 292 | && |
| Jonathan Austin |
0:bc2961fa1ef0 | 293 | (p_evt_write->len == 2) |
| Jonathan Austin |
0:bc2961fa1ef0 | 294 | ) |
| Jonathan Austin |
0:bc2961fa1ef0 | 295 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 296 | // Check if this is a 'start notification' |
| Jonathan Austin |
0:bc2961fa1ef0 | 297 | if (ble_srv_is_notification_enabled(p_evt_write->data)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 298 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 299 | // Do connection parameter negotiation if necessary |
| Jonathan Austin |
0:bc2961fa1ef0 | 300 | conn_params_negotiation(); |
| Jonathan Austin |
0:bc2961fa1ef0 | 301 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 302 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 303 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 304 | #ifdef USE_APP_TIMER |
| Jonathan Austin |
0:bc2961fa1ef0 | 305 | uint32_t err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 306 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 307 | // Stop timer if running |
| Jonathan Austin |
0:bc2961fa1ef0 | 308 | err_code = app_timer_stop(m_conn_params_timer_id); |
| Jonathan Austin |
0:bc2961fa1ef0 | 309 | if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 310 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 311 | m_conn_params_config.error_handler(err_code); |
| Jonathan Austin |
0:bc2961fa1ef0 | 312 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 313 | #else /* #if !USE_APP_TIMER */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 314 | m_conn_params_timer.detach(); |
| Jonathan Austin |
0:bc2961fa1ef0 | 315 | #endif /* #if !USE_APP_TIMER */ |
| Jonathan Austin |
0:bc2961fa1ef0 | 316 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 317 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 318 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 319 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 320 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 321 | static void on_conn_params_update(ble_evt_t * p_ble_evt) |
| Jonathan Austin |
0:bc2961fa1ef0 | 322 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 323 | // Copy the parameters |
| Jonathan Austin |
0:bc2961fa1ef0 | 324 | m_current_conn_params = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params; |
| Jonathan Austin |
0:bc2961fa1ef0 | 325 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 326 | conn_params_negotiation(); |
| Jonathan Austin |
0:bc2961fa1ef0 | 327 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 328 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 329 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 330 | void ble_conn_params_on_ble_evt(ble_evt_t * p_ble_evt) |
| Jonathan Austin |
0:bc2961fa1ef0 | 331 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 332 | switch (p_ble_evt->header.evt_id) |
| Jonathan Austin |
0:bc2961fa1ef0 | 333 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 334 | case BLE_GAP_EVT_CONNECTED: |
| Jonathan Austin |
0:bc2961fa1ef0 | 335 | on_connect(p_ble_evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 336 | break; |
| Jonathan Austin |
0:bc2961fa1ef0 | 337 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 338 | case BLE_GAP_EVT_DISCONNECTED: |
| Jonathan Austin |
0:bc2961fa1ef0 | 339 | on_disconnect(p_ble_evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 340 | break; |
| Jonathan Austin |
0:bc2961fa1ef0 | 341 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 342 | case BLE_GATTS_EVT_WRITE: |
| Jonathan Austin |
0:bc2961fa1ef0 | 343 | on_write(p_ble_evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 344 | break; |
| Jonathan Austin |
0:bc2961fa1ef0 | 345 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 346 | case BLE_GAP_EVT_CONN_PARAM_UPDATE: |
| Jonathan Austin |
0:bc2961fa1ef0 | 347 | on_conn_params_update(p_ble_evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 348 | break; |
| Jonathan Austin |
0:bc2961fa1ef0 | 349 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 350 | default: |
| Jonathan Austin |
0:bc2961fa1ef0 | 351 | // No implementation needed. |
| Jonathan Austin |
0:bc2961fa1ef0 | 352 | break; |
| Jonathan Austin |
0:bc2961fa1ef0 | 353 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 354 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 355 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 356 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 357 | uint32_t ble_conn_params_change_conn_params(ble_gap_conn_params_t * new_params) |
| Jonathan Austin |
0:bc2961fa1ef0 | 358 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 359 | uint32_t err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 360 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 361 | m_preferred_conn_params = *new_params; |
| Jonathan Austin |
0:bc2961fa1ef0 | 362 | // Set the connection params in stack |
| Jonathan Austin |
0:bc2961fa1ef0 | 363 | err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params); |
| Jonathan Austin |
0:bc2961fa1ef0 | 364 | if (err_code == NRF_SUCCESS) |
| Jonathan Austin |
0:bc2961fa1ef0 | 365 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 366 | if (!is_conn_params_ok(&m_current_conn_params)) |
| Jonathan Austin |
0:bc2961fa1ef0 | 367 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 368 | m_change_param = true; |
| Jonathan Austin |
0:bc2961fa1ef0 | 369 | err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params); |
| Jonathan Austin |
0:bc2961fa1ef0 | 370 | m_update_count = 1; |
| Jonathan Austin |
0:bc2961fa1ef0 | 371 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 372 | else |
| Jonathan Austin |
0:bc2961fa1ef0 | 373 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 374 | // Notify the application that the procedure has succeded |
| Jonathan Austin |
0:bc2961fa1ef0 | 375 | if (m_conn_params_config.evt_handler != NULL) |
| Jonathan Austin |
0:bc2961fa1ef0 | 376 | { |
| Jonathan Austin |
0:bc2961fa1ef0 | 377 | ble_conn_params_evt_t evt; |
| Jonathan Austin |
0:bc2961fa1ef0 | 378 | |
| Jonathan Austin |
0:bc2961fa1ef0 | 379 | evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED; |
| Jonathan Austin |
0:bc2961fa1ef0 | 380 | m_conn_params_config.evt_handler(&evt); |
| Jonathan Austin |
0:bc2961fa1ef0 | 381 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 382 | err_code = NRF_SUCCESS; |
| Jonathan Austin |
0:bc2961fa1ef0 | 383 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 384 | } |
| Jonathan Austin |
0:bc2961fa1ef0 | 385 | return err_code; |
| Jonathan Austin |
0:bc2961fa1ef0 | 386 | } |