Yihui Xiong / Mbed 2 deprecated BLE_Default_APP

BLE FOTA APP

Dependencies:   BLE_API mbed

It doesn't work with the default FOTA bootloader. It use NVIC_SystemReset() to enter a bootloader.

nRF51822/nordic/ble/ble_conn_params.cpp@1:a607cd9655d7, 2014-10-10 (annotated)

Committer:
yihui
Date:
Fri Oct 10 03:36:28 2014 +0000
Revision:
1:a607cd9655d7
use NVIC_SystemReset() to run bootloader

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 1:a607cd9655d7 1 /* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
yihui 1:a607cd9655d7 2 *
yihui 1:a607cd9655d7 3 * The information contained herein is property of Nordic Semiconductor ASA.
yihui 1:a607cd9655d7 4 * Terms and conditions of usage are described in detail in NORDIC
yihui 1:a607cd9655d7 5 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
yihui 1:a607cd9655d7 6 *
yihui 1:a607cd9655d7 7 * Licensees are granted free, non-transferable use of the information. NO
yihui 1:a607cd9655d7 8 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
yihui 1:a607cd9655d7 9 * the file.
yihui 1:a607cd9655d7 10 *
yihui 1:a607cd9655d7 11 */
yihui 1:a607cd9655d7 12
yihui 1:a607cd9655d7 13 #include "ble_conn_params.h"
yihui 1:a607cd9655d7 14 #include <stdlib.h>
yihui 1:a607cd9655d7 15 #include "nordic_common.h"
yihui 1:a607cd9655d7 16 #include "ble_hci.h"
yihui 1:a607cd9655d7 17 #include "app_timer.h"
yihui 1:a607cd9655d7 18 #include "ble_srv_common.h"
yihui 1:a607cd9655d7 19 #include "app_util.h"
yihui 1:a607cd9655d7 20
yihui 1:a607cd9655d7 21
yihui 1:a607cd9655d7 22 static ble_conn_params_init_t m_conn_params_config; /**< Configuration as specified by the application. */
yihui 1:a607cd9655d7 23 static ble_gap_conn_params_t m_preferred_conn_params; /**< Connection parameters preferred by the application. */
yihui 1:a607cd9655d7 24 static uint8_t m_update_count; /**< Number of Connection Parameter Update messages that has currently been sent. */
yihui 1:a607cd9655d7 25 static uint16_t m_conn_handle; /**< Current connection handle. */
yihui 1:a607cd9655d7 26 static ble_gap_conn_params_t m_current_conn_params; /**< Connection parameters received in the most recent Connect event. */
yihui 1:a607cd9655d7 27 static app_timer_id_t m_conn_params_timer_id; /**< Connection parameters timer. */
yihui 1:a607cd9655d7 28
yihui 1:a607cd9655d7 29 static bool m_change_param = false;
yihui 1:a607cd9655d7 30
yihui 1:a607cd9655d7 31 static bool is_conn_params_ok(ble_gap_conn_params_t * p_conn_params)
yihui 1:a607cd9655d7 32 {
yihui 1:a607cd9655d7 33 // Check if interval is within the acceptable range.
yihui 1:a607cd9655d7 34 // NOTE: Using max_conn_interval in the received event data because this contains
yihui 1:a607cd9655d7 35 // the client's connection interval.
yihui 1:a607cd9655d7 36 if ((p_conn_params->max_conn_interval >= m_preferred_conn_params.min_conn_interval) &&
yihui 1:a607cd9655d7 37 (p_conn_params->max_conn_interval <= m_preferred_conn_params.max_conn_interval)) {
yihui 1:a607cd9655d7 38 return true;
yihui 1:a607cd9655d7 39 } else {
yihui 1:a607cd9655d7 40 return false;
yihui 1:a607cd9655d7 41 }
yihui 1:a607cd9655d7 42 }
yihui 1:a607cd9655d7 43
yihui 1:a607cd9655d7 44
yihui 1:a607cd9655d7 45 static void update_timeout_handler(void * p_context)
yihui 1:a607cd9655d7 46 {
yihui 1:a607cd9655d7 47 UNUSED_PARAMETER(p_context);
yihui 1:a607cd9655d7 48
yihui 1:a607cd9655d7 49 if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
yihui 1:a607cd9655d7 50 {
yihui 1:a607cd9655d7 51 // Check if we have reached the maximum number of attempts
yihui 1:a607cd9655d7 52 m_update_count++;
yihui 1:a607cd9655d7 53 if (m_update_count <= m_conn_params_config.max_conn_params_update_count)
yihui 1:a607cd9655d7 54 {
yihui 1:a607cd9655d7 55 uint32_t err_code;
yihui 1:a607cd9655d7 56
yihui 1:a607cd9655d7 57 // Parameters are not ok, send connection parameters update request.
yihui 1:a607cd9655d7 58 err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params);
yihui 1:a607cd9655d7 59 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
yihui 1:a607cd9655d7 60 {
yihui 1:a607cd9655d7 61 m_conn_params_config.error_handler(err_code);
yihui 1:a607cd9655d7 62 }
yihui 1:a607cd9655d7 63 }
yihui 1:a607cd9655d7 64 else
yihui 1:a607cd9655d7 65 {
yihui 1:a607cd9655d7 66 m_update_count = 0;
yihui 1:a607cd9655d7 67
yihui 1:a607cd9655d7 68 // Negotiation failed, disconnect automatically if this has been configured
yihui 1:a607cd9655d7 69 if (m_conn_params_config.disconnect_on_fail)
yihui 1:a607cd9655d7 70 {
yihui 1:a607cd9655d7 71 uint32_t err_code;
yihui 1:a607cd9655d7 72
yihui 1:a607cd9655d7 73 err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
yihui 1:a607cd9655d7 74 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
yihui 1:a607cd9655d7 75 {
yihui 1:a607cd9655d7 76 m_conn_params_config.error_handler(err_code);
yihui 1:a607cd9655d7 77 }
yihui 1:a607cd9655d7 78 }
yihui 1:a607cd9655d7 79
yihui 1:a607cd9655d7 80 // Notify the application that the procedure has failed
yihui 1:a607cd9655d7 81 if (m_conn_params_config.evt_handler != NULL)
yihui 1:a607cd9655d7 82 {
yihui 1:a607cd9655d7 83 ble_conn_params_evt_t evt;
yihui 1:a607cd9655d7 84
yihui 1:a607cd9655d7 85 evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED;
yihui 1:a607cd9655d7 86 m_conn_params_config.evt_handler(&evt);
yihui 1:a607cd9655d7 87 }
yihui 1:a607cd9655d7 88 }
yihui 1:a607cd9655d7 89 }
yihui 1:a607cd9655d7 90 }
yihui 1:a607cd9655d7 91
yihui 1:a607cd9655d7 92
yihui 1:a607cd9655d7 93 uint32_t ble_conn_params_init(const ble_conn_params_init_t * p_init)
yihui 1:a607cd9655d7 94 {
yihui 1:a607cd9655d7 95 uint32_t err_code;
yihui 1:a607cd9655d7 96
yihui 1:a607cd9655d7 97 m_conn_params_config = *p_init;
yihui 1:a607cd9655d7 98 m_change_param = false;
yihui 1:a607cd9655d7 99 if (p_init->p_conn_params != NULL)
yihui 1:a607cd9655d7 100 {
yihui 1:a607cd9655d7 101 m_preferred_conn_params = *p_init->p_conn_params;
yihui 1:a607cd9655d7 102
yihui 1:a607cd9655d7 103 // Set the connection params in stack
yihui 1:a607cd9655d7 104 err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params);
yihui 1:a607cd9655d7 105 if (err_code != NRF_SUCCESS)
yihui 1:a607cd9655d7 106 {
yihui 1:a607cd9655d7 107 return err_code;
yihui 1:a607cd9655d7 108 }
yihui 1:a607cd9655d7 109 }
yihui 1:a607cd9655d7 110 else
yihui 1:a607cd9655d7 111 {
yihui 1:a607cd9655d7 112 // Fetch the connection params from stack
yihui 1:a607cd9655d7 113 err_code = sd_ble_gap_ppcp_get(&m_preferred_conn_params);
yihui 1:a607cd9655d7 114 if (err_code != NRF_SUCCESS)
yihui 1:a607cd9655d7 115 {
yihui 1:a607cd9655d7 116 return err_code;
yihui 1:a607cd9655d7 117 }
yihui 1:a607cd9655d7 118 }
yihui 1:a607cd9655d7 119
yihui 1:a607cd9655d7 120 m_conn_handle = BLE_CONN_HANDLE_INVALID;
yihui 1:a607cd9655d7 121 m_update_count = 0;
yihui 1:a607cd9655d7 122
yihui 1:a607cd9655d7 123 return app_timer_create(&m_conn_params_timer_id,
yihui 1:a607cd9655d7 124 APP_TIMER_MODE_SINGLE_SHOT,
yihui 1:a607cd9655d7 125 update_timeout_handler);
yihui 1:a607cd9655d7 126 }
yihui 1:a607cd9655d7 127
yihui 1:a607cd9655d7 128
yihui 1:a607cd9655d7 129 uint32_t ble_conn_params_stop(void)
yihui 1:a607cd9655d7 130 {
yihui 1:a607cd9655d7 131 return app_timer_stop(m_conn_params_timer_id);
yihui 1:a607cd9655d7 132 }
yihui 1:a607cd9655d7 133
yihui 1:a607cd9655d7 134
yihui 1:a607cd9655d7 135 static void conn_params_negotiation(void)
yihui 1:a607cd9655d7 136 {
yihui 1:a607cd9655d7 137 // Start negotiation if the received connection parameters are not acceptable
yihui 1:a607cd9655d7 138 if (!is_conn_params_ok(&m_current_conn_params))
yihui 1:a607cd9655d7 139 {
yihui 1:a607cd9655d7 140 uint32_t err_code;
yihui 1:a607cd9655d7 141 uint32_t timeout_ticks;
yihui 1:a607cd9655d7 142
yihui 1:a607cd9655d7 143 if (m_change_param)
yihui 1:a607cd9655d7 144 {
yihui 1:a607cd9655d7 145 // Notify the application that the procedure has failed
yihui 1:a607cd9655d7 146 if (m_conn_params_config.evt_handler != NULL)
yihui 1:a607cd9655d7 147 {
yihui 1:a607cd9655d7 148 ble_conn_params_evt_t evt;
yihui 1:a607cd9655d7 149
yihui 1:a607cd9655d7 150 evt.evt_type = BLE_CONN_PARAMS_EVT_FAILED;
yihui 1:a607cd9655d7 151 m_conn_params_config.evt_handler(&evt);
yihui 1:a607cd9655d7 152 }
yihui 1:a607cd9655d7 153 }
yihui 1:a607cd9655d7 154 else
yihui 1:a607cd9655d7 155 {
yihui 1:a607cd9655d7 156 if (m_update_count == 0)
yihui 1:a607cd9655d7 157 {
yihui 1:a607cd9655d7 158 // First connection parameter update
yihui 1:a607cd9655d7 159 timeout_ticks = m_conn_params_config.first_conn_params_update_delay;
yihui 1:a607cd9655d7 160 }
yihui 1:a607cd9655d7 161 else
yihui 1:a607cd9655d7 162 {
yihui 1:a607cd9655d7 163 timeout_ticks = m_conn_params_config.next_conn_params_update_delay;
yihui 1:a607cd9655d7 164 }
yihui 1:a607cd9655d7 165
yihui 1:a607cd9655d7 166 err_code = app_timer_start(m_conn_params_timer_id, timeout_ticks, NULL);
yihui 1:a607cd9655d7 167 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
yihui 1:a607cd9655d7 168 {
yihui 1:a607cd9655d7 169 m_conn_params_config.error_handler(err_code);
yihui 1:a607cd9655d7 170 }
yihui 1:a607cd9655d7 171 }
yihui 1:a607cd9655d7 172 }
yihui 1:a607cd9655d7 173 else
yihui 1:a607cd9655d7 174 {
yihui 1:a607cd9655d7 175 // Notify the application that the procedure has succeded
yihui 1:a607cd9655d7 176 if (m_conn_params_config.evt_handler != NULL)
yihui 1:a607cd9655d7 177 {
yihui 1:a607cd9655d7 178 ble_conn_params_evt_t evt;
yihui 1:a607cd9655d7 179
yihui 1:a607cd9655d7 180 evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED;
yihui 1:a607cd9655d7 181 m_conn_params_config.evt_handler(&evt);
yihui 1:a607cd9655d7 182 }
yihui 1:a607cd9655d7 183 }
yihui 1:a607cd9655d7 184 m_change_param = false;
yihui 1:a607cd9655d7 185 }
yihui 1:a607cd9655d7 186
yihui 1:a607cd9655d7 187
yihui 1:a607cd9655d7 188 static void on_connect(ble_evt_t * p_ble_evt)
yihui 1:a607cd9655d7 189 {
yihui 1:a607cd9655d7 190 // Save connection parameters
yihui 1:a607cd9655d7 191 m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
yihui 1:a607cd9655d7 192 m_current_conn_params = p_ble_evt->evt.gap_evt.params.connected.conn_params;
yihui 1:a607cd9655d7 193 m_update_count = 0; // Connection parameter negotiation should re-start every connection
yihui 1:a607cd9655d7 194
yihui 1:a607cd9655d7 195 // Check if we shall handle negotiation on connect
yihui 1:a607cd9655d7 196 if (m_conn_params_config.start_on_notify_cccd_handle == BLE_GATT_HANDLE_INVALID)
yihui 1:a607cd9655d7 197 {
yihui 1:a607cd9655d7 198 conn_params_negotiation();
yihui 1:a607cd9655d7 199 }
yihui 1:a607cd9655d7 200 }
yihui 1:a607cd9655d7 201
yihui 1:a607cd9655d7 202
yihui 1:a607cd9655d7 203 static void on_disconnect(ble_evt_t * p_ble_evt)
yihui 1:a607cd9655d7 204 {
yihui 1:a607cd9655d7 205 uint32_t err_code;
yihui 1:a607cd9655d7 206
yihui 1:a607cd9655d7 207 m_conn_handle = BLE_CONN_HANDLE_INVALID;
yihui 1:a607cd9655d7 208
yihui 1:a607cd9655d7 209 // Stop timer if running
yihui 1:a607cd9655d7 210 m_update_count = 0; // Connection parameters updates should happen during every connection
yihui 1:a607cd9655d7 211
yihui 1:a607cd9655d7 212 err_code = app_timer_stop(m_conn_params_timer_id);
yihui 1:a607cd9655d7 213 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
yihui 1:a607cd9655d7 214 {
yihui 1:a607cd9655d7 215 m_conn_params_config.error_handler(err_code);
yihui 1:a607cd9655d7 216 }
yihui 1:a607cd9655d7 217 }
yihui 1:a607cd9655d7 218
yihui 1:a607cd9655d7 219
yihui 1:a607cd9655d7 220 static void on_write(ble_evt_t * p_ble_evt)
yihui 1:a607cd9655d7 221 {
yihui 1:a607cd9655d7 222 ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
yihui 1:a607cd9655d7 223
yihui 1:a607cd9655d7 224 // Check if this the correct CCCD
yihui 1:a607cd9655d7 225 if (
yihui 1:a607cd9655d7 226 (p_evt_write->handle == m_conn_params_config.start_on_notify_cccd_handle)
yihui 1:a607cd9655d7 227 &&
yihui 1:a607cd9655d7 228 (p_evt_write->len == 2)
yihui 1:a607cd9655d7 229 )
yihui 1:a607cd9655d7 230 {
yihui 1:a607cd9655d7 231 // Check if this is a 'start notification'
yihui 1:a607cd9655d7 232 if (ble_srv_is_notification_enabled(p_evt_write->data))
yihui 1:a607cd9655d7 233 {
yihui 1:a607cd9655d7 234 // Do connection parameter negotiation if necessary
yihui 1:a607cd9655d7 235 conn_params_negotiation();
yihui 1:a607cd9655d7 236 }
yihui 1:a607cd9655d7 237 else
yihui 1:a607cd9655d7 238 {
yihui 1:a607cd9655d7 239 uint32_t err_code;
yihui 1:a607cd9655d7 240
yihui 1:a607cd9655d7 241 // Stop timer if running
yihui 1:a607cd9655d7 242 err_code = app_timer_stop(m_conn_params_timer_id);
yihui 1:a607cd9655d7 243 if ((err_code != NRF_SUCCESS) && (m_conn_params_config.error_handler != NULL))
yihui 1:a607cd9655d7 244 {
yihui 1:a607cd9655d7 245 m_conn_params_config.error_handler(err_code);
yihui 1:a607cd9655d7 246 }
yihui 1:a607cd9655d7 247 }
yihui 1:a607cd9655d7 248 }
yihui 1:a607cd9655d7 249 }
yihui 1:a607cd9655d7 250
yihui 1:a607cd9655d7 251
yihui 1:a607cd9655d7 252 static void on_conn_params_update(ble_evt_t * p_ble_evt)
yihui 1:a607cd9655d7 253 {
yihui 1:a607cd9655d7 254 // Copy the parameters
yihui 1:a607cd9655d7 255 m_current_conn_params = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params;
yihui 1:a607cd9655d7 256
yihui 1:a607cd9655d7 257 conn_params_negotiation();
yihui 1:a607cd9655d7 258 }
yihui 1:a607cd9655d7 259
yihui 1:a607cd9655d7 260
yihui 1:a607cd9655d7 261 void ble_conn_params_on_ble_evt(ble_evt_t * p_ble_evt)
yihui 1:a607cd9655d7 262 {
yihui 1:a607cd9655d7 263 switch (p_ble_evt->header.evt_id)
yihui 1:a607cd9655d7 264 {
yihui 1:a607cd9655d7 265 case BLE_GAP_EVT_CONNECTED:
yihui 1:a607cd9655d7 266 on_connect(p_ble_evt);
yihui 1:a607cd9655d7 267 break;
yihui 1:a607cd9655d7 268
yihui 1:a607cd9655d7 269 case BLE_GAP_EVT_DISCONNECTED:
yihui 1:a607cd9655d7 270 on_disconnect(p_ble_evt);
yihui 1:a607cd9655d7 271 break;
yihui 1:a607cd9655d7 272
yihui 1:a607cd9655d7 273 case BLE_GATTS_EVT_WRITE:
yihui 1:a607cd9655d7 274 on_write(p_ble_evt);
yihui 1:a607cd9655d7 275 break;
yihui 1:a607cd9655d7 276
yihui 1:a607cd9655d7 277 case BLE_GAP_EVT_CONN_PARAM_UPDATE:
yihui 1:a607cd9655d7 278 on_conn_params_update(p_ble_evt);
yihui 1:a607cd9655d7 279 break;
yihui 1:a607cd9655d7 280
yihui 1:a607cd9655d7 281 default:
yihui 1:a607cd9655d7 282 // No implementation needed.
yihui 1:a607cd9655d7 283 break;
yihui 1:a607cd9655d7 284 }
yihui 1:a607cd9655d7 285 }
yihui 1:a607cd9655d7 286
yihui 1:a607cd9655d7 287 uint32_t ble_conn_params_change_conn_params(ble_gap_conn_params_t *new_params)
yihui 1:a607cd9655d7 288 {
yihui 1:a607cd9655d7 289 uint32_t err_code;
yihui 1:a607cd9655d7 290
yihui 1:a607cd9655d7 291 m_preferred_conn_params = *new_params;
yihui 1:a607cd9655d7 292 // Set the connection params in stack
yihui 1:a607cd9655d7 293 err_code = sd_ble_gap_ppcp_set(&m_preferred_conn_params);
yihui 1:a607cd9655d7 294 if (err_code == NRF_SUCCESS)
yihui 1:a607cd9655d7 295 {
yihui 1:a607cd9655d7 296 if (!is_conn_params_ok(&m_current_conn_params))
yihui 1:a607cd9655d7 297 {
yihui 1:a607cd9655d7 298 m_change_param = true;
yihui 1:a607cd9655d7 299 err_code = sd_ble_gap_conn_param_update(m_conn_handle, &m_preferred_conn_params);
yihui 1:a607cd9655d7 300 m_update_count = 1;
yihui 1:a607cd9655d7 301 }
yihui 1:a607cd9655d7 302 else
yihui 1:a607cd9655d7 303 {
yihui 1:a607cd9655d7 304 // Notify the application that the procedure has succeded
yihui 1:a607cd9655d7 305 if (m_conn_params_config.evt_handler != NULL)
yihui 1:a607cd9655d7 306 {
yihui 1:a607cd9655d7 307 ble_conn_params_evt_t evt;
yihui 1:a607cd9655d7 308
yihui 1:a607cd9655d7 309 evt.evt_type = BLE_CONN_PARAMS_EVT_SUCCEEDED;
yihui 1:a607cd9655d7 310 m_conn_params_config.evt_handler(&evt);
yihui 1:a607cd9655d7 311 }
yihui 1:a607cd9655d7 312 err_code = NRF_SUCCESS;
yihui 1:a607cd9655d7 313 }
yihui 1:a607cd9655d7 314 }
yihui 1:a607cd9655d7 315 return err_code;
yihui 1:a607cd9655d7 316 }