library for BLE_GAP_backpack
Dependencies: nrf51-sdk
Fork of nRF51822 by
btle_gap.cpp
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #include "common/common.h " 00017 00018 #include "ble_gap.h" 00019 #include "ble_conn_params.h" 00020 00021 static inline uint32_t msec_to_1_25msec(uint32_t interval_ms) ATTR_ALWAYS_INLINE ATTR_CONST; 00022 #if SDK_CONN_PARAMS_MODULE_ENABLE 00023 static void error_callback(uint32_t nrf_error); 00024 #endif // SDK_CONN_PARAMS_MODULE_ENABLE 00025 00026 /**************************************************************************/ 00027 /*! 00028 @brief Initialise GAP in the underlying SoftDevice 00029 00030 @returns 00031 */ 00032 /**************************************************************************/ 00033 error_t btle_gap_init(void) 00034 { 00035 ble_gap_conn_params_t gap_conn_params = {0}; 00036 00037 gap_conn_params.min_conn_interval = msec_to_1_25msec(CFG_GAP_CONNECTION_MIN_INTERVAL_MS); // in 1.25ms units 00038 gap_conn_params.max_conn_interval = msec_to_1_25msec(CFG_GAP_CONNECTION_MAX_INTERVAL_MS); // in 1.25ms unit 00039 gap_conn_params.slave_latency = CFG_GAP_CONNECTION_SLAVE_LATENCY; 00040 gap_conn_params.conn_sup_timeout = CFG_GAP_CONNECTION_SUPERVISION_TIMEOUT_MS / 10; // in 10ms unit 00041 00042 ble_gap_conn_sec_mode_t sec_mode; 00043 BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode); // no security is needed 00044 00045 ASSERT_STATUS( sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *) CFG_GAP_LOCAL_NAME, strlen(CFG_GAP_LOCAL_NAME))); 00046 ASSERT_STATUS( sd_ble_gap_appearance_set(CFG_GAP_APPEARANCE)); 00047 ASSERT_STATUS( sd_ble_gap_ppcp_set(&gap_conn_params)); 00048 ASSERT_STATUS( sd_ble_gap_tx_power_set(CFG_BLE_TX_POWER_LEVEL)); 00049 00050 /** 00051 * Call to conn_params_init() is not necessary; and so is disabled by default. 00052 * This API should be exposed to the user to be invoked when necessary. 00053 */ 00054 #if SDK_CONN_PARAMS_MODULE_ENABLE 00055 /* Connection Parameters */ 00056 enum { 00057 FIRST_UPDATE_DELAY = APP_TIMER_TICKS(5000, CFG_TIMER_PRESCALER), 00058 NEXT_UPDATE_DELAY = APP_TIMER_TICKS(5000, CFG_TIMER_PRESCALER), 00059 MAX_UPDATE_COUNT = 3 00060 }; 00061 00062 ble_conn_params_init_t cp_init = {0}; 00063 00064 cp_init.p_conn_params = NULL; 00065 cp_init.first_conn_params_update_delay = FIRST_UPDATE_DELAY; 00066 cp_init.next_conn_params_update_delay = NEXT_UPDATE_DELAY; 00067 cp_init.max_conn_params_update_count = MAX_UPDATE_COUNT; 00068 cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID; 00069 cp_init.disconnect_on_fail = true; 00070 cp_init.evt_handler = NULL; 00071 cp_init.error_handler = error_callback; 00072 00073 ASSERT_STATUS ( ble_conn_params_init(&cp_init)); 00074 #endif // SDK_CONN_PARAMS_MODULE_ENABLE 00075 00076 return ERROR_NONE; 00077 } 00078 00079 /**************************************************************************/ 00080 /*! 00081 @brief Converts msecs to an integer representing 1.25ms units 00082 00083 @param[in] ms 00084 The number of milliseconds to conver to 1.25ms units 00085 00086 @returns The number of 1.25ms units in the supplied number of ms 00087 */ 00088 /**************************************************************************/ 00089 static inline uint32_t msec_to_1_25msec(uint32_t interval_ms) 00090 { 00091 return (interval_ms * 4) / 5; 00092 } 00093 00094 #if SDK_CONN_PARAMS_MODULE_ENABLE 00095 static void error_callback(uint32_t nrf_error) 00096 { 00097 ASSERT_STATUS_RET_VOID( nrf_error ); 00098 } 00099 #endif // SDK_CONN_PARAMS_MODULE_ENABLE
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