nRF51822n.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 
00017 #include "mbed.h"
00018 #include "nRF51822n.h"
00019 #include "nrf_soc.h"
00020 
00021 #include "btle/btle.h"
00022 #include "nrf_delay.h"
00023 
00024 /**
00025  * The singleton which represents the nRF51822 transport for the BLEDevice.
00026  */
00027 static nRF51822n deviceInstance;
00028 
00029 /**
00030  * BLE-API requires an implementation of the following function in order to
00031  * obtain its transport handle.
00032  */
00033 BLEDeviceInstanceBase *
00034 createBLEDeviceInstance(void)
00035 {
00036     return (&deviceInstance);
00037 }
00038 
00039 /**************************************************************************/
00040 /*!
00041     @brief  Constructor
00042 */
00043 /**************************************************************************/
00044 nRF51822n::nRF51822n(void)
00045 {
00046 }
00047 
00048 /**************************************************************************/
00049 /*!
00050     @brief  Destructor
00051 */
00052 /**************************************************************************/
00053 nRF51822n::~nRF51822n(void)
00054 {
00055 }
00056 
00057 const char *nRF51822n::getVersion(void)
00058 {
00059     static char versionString[10];
00060     static bool versionFetched = false;
00061 
00062     if (!versionFetched) {
00063         ble_version_t version;
00064         if (sd_ble_version_get(&version) == NRF_SUCCESS) {
00065             snprintf(versionString, sizeof(versionString), "%u.%u", version.version_number, version.subversion_number);
00066             versionFetched = true;
00067         } else {
00068             strncpy(versionString, "unknown", sizeof(versionString));
00069         }
00070     }
00071 
00072     return versionString;
00073 }
00074 
00075 /* (Valid values are -40, -20, -16, -12, -8, -4, 0, 4) */
00076 ble_error_t nRF51822n::setTxPower(int8_t txPower)
00077 {
00078     unsigned rc;
00079     if ((rc = sd_ble_gap_tx_power_set(txPower)) != NRF_SUCCESS) {
00080         switch (rc) {
00081             case NRF_ERROR_BUSY:
00082                 return BLE_STACK_BUSY;
00083             case NRF_ERROR_INVALID_PARAM:
00084             default:
00085                 return BLE_ERROR_PARAM_OUT_OF_RANGE;
00086         }
00087     }
00088 
00089     return BLE_ERROR_NONE;
00090 }
00091 
00092 /**************************************************************************/
00093 /*!
00094     @brief  Initialises anything required to start using BLE
00095 
00096     @returns    ble_error_t
00097 
00098     @retval     BLE_ERROR_NONE
00099                 Everything executed properly
00100 
00101     @section EXAMPLE
00102 
00103     @code
00104 
00105     @endcode
00106 */
00107 /**************************************************************************/
00108 ble_error_t nRF51822n::init(void)
00109 {
00110     /* ToDo: Clear memory contents, reset the SD, etc. */
00111     btle_init();
00112 
00113     reset();
00114 
00115     return BLE_ERROR_NONE;
00116 }
00117 
00118 /**************************************************************************/
00119 /*!
00120     @brief  Resets the BLE HW, removing any existing services and
00121             characteristics
00122 
00123     @returns    ble_error_t
00124 
00125     @retval     BLE_ERROR_NONE
00126                 Everything executed properly
00127 
00128     @section EXAMPLE
00129 
00130     @code
00131 
00132     @endcode
00133 */
00134 /**************************************************************************/
00135 ble_error_t nRF51822n::reset(void)
00136 {
00137     nrf_delay_us(500000);
00138 
00139     /* Wait for the radio to come back up */
00140     nrf_delay_us(1000000);
00141 
00142     return BLE_ERROR_NONE;
00143 }
00144 
00145 void
00146 nRF51822n::waitForEvent(void)
00147 {
00148     sd_app_evt_wait();
00149 }