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 
00023 /**
00024  * The singleton which represents the nRF51822 transport for the BLEDevice.
00025  */
00026 static nRF51822n deviceInstance;
00027 
00028 /**
00029  * BLE-API requires an implementation of the following function in order to
00030  * obtain its transport handle.
00031  */
00032 BLEDeviceInstanceBase *
00033 createBLEDeviceInstance(void)
00034 {
00035     return (&deviceInstance);
00036 }
00037 
00038 /**************************************************************************/
00039 /*!
00040     @brief  Constructor
00041 */
00042 /**************************************************************************/
00043 nRF51822n::nRF51822n(void)
00044 {
00045 }
00046 
00047 /**************************************************************************/
00048 /*!
00049     @brief  Destructor
00050 */
00051 /**************************************************************************/
00052 nRF51822n::~nRF51822n(void)
00053 {
00054 }
00055 
00056 const char *nRF51822n::getVersion(void)
00057 {
00058     static char versionString[10];
00059     static bool versionFetched = false;
00060 
00061     if (!versionFetched) {
00062         ble_version_t version;
00063         if (sd_ble_version_get(&version) == NRF_SUCCESS) {
00064             snprintf(versionString, sizeof(versionString), "%u.%u", version.version_number, version.subversion_number);
00065             versionFetched = true;
00066         } else {
00067             strncpy(versionString, "unknown", sizeof(versionString));
00068         }
00069     }
00070 
00071     return versionString;
00072 }
00073 
00074 /* (Valid values are -40, -20, -16, -12, -8, -4, 0, 4) */
00075 ble_error_t nRF51822n::setTxPower(int8_t txPower)
00076 {
00077     unsigned rc;
00078     if ((rc = sd_ble_gap_tx_power_set(txPower)) != NRF_SUCCESS) {
00079         switch (rc) {
00080             case NRF_ERROR_BUSY:
00081                 return BLE_STACK_BUSY;
00082             case NRF_ERROR_INVALID_PARAM:
00083             default:
00084                 return BLE_ERROR_PARAM_OUT_OF_RANGE;
00085         }
00086     }
00087 
00088     return BLE_ERROR_NONE;
00089 }
00090 
00091 /**************************************************************************/
00092 /*!
00093     @brief  Initialises anything required to start using BLE
00094 
00095     @returns    ble_error_t
00096 
00097     @retval     BLE_ERROR_NONE
00098                 Everything executed properly
00099 
00100     @section EXAMPLE
00101 
00102     @code
00103 
00104     @endcode
00105 */
00106 /**************************************************************************/
00107 ble_error_t nRF51822n::init(void)
00108 {
00109     /* ToDo: Clear memory contents, reset the SD, etc. */
00110     btle_init();
00111 
00112     reset();
00113 
00114     return BLE_ERROR_NONE;
00115 }
00116 
00117 /**************************************************************************/
00118 /*!
00119     @brief  Resets the BLE HW, removing any existing services and
00120             characteristics
00121 
00122     @returns    ble_error_t
00123 
00124     @retval     BLE_ERROR_NONE
00125                 Everything executed properly
00126 
00127     @section EXAMPLE
00128 
00129     @code
00130 
00131     @endcode
00132 */
00133 /**************************************************************************/
00134 ble_error_t nRF51822n::reset(void)
00135 {
00136     wait(0.5);
00137 
00138     /* Wait for the radio to come back up */
00139     wait(1);
00140 
00141     return BLE_ERROR_NONE;
00142 }
00143 
00144 void
00145 nRF51822n::waitForEvent(void)
00146 {
00147     sd_app_evt_wait();
00148 }