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 #include "softdevice_handler.h "
00025 
00026 /**
00027  * The singleton which represents the nRF51822 transport for the BLEDevice.
00028  */
00029 static nRF51822n deviceInstance;
00030 
00031 /**
00032  * BLE-API requires an implementation of the following function in order to
00033  * obtain its transport handle.
00034  */
00035 BLEDeviceInstanceBase *
00036 createBLEDeviceInstance(void)
00037 {
00038     return (&deviceInstance);
00039 }
00040 
00041 nRF51822n::nRF51822n(void)
00042 {
00043 }
00044 
00045 nRF51822n::~nRF51822n(void)
00046 {
00047 }
00048 
00049 const char *nRF51822n::getVersion(void)
00050 {
00051     static char versionString[32];
00052     static bool versionFetched = false;
00053 
00054     if (!versionFetched) {
00055         ble_version_t version;
00056         if ((sd_ble_version_get(&version) == NRF_SUCCESS) && (version.company_id == 0x0059)) {
00057             switch (version.version_number) {
00058                 case 0x07:
00059                     snprintf(versionString, sizeof(versionString), "Nordic BLE4.1 fw:%04x", version.subversion_number);
00060                     break;
00061                 default:
00062                     snprintf(versionString, sizeof(versionString), "Nordic (spec unknown) fw:%04x", version.subversion_number);
00063                     break;
00064             }
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 void nRF51822n::getPermittedTxPowerValues(const int8_t **valueArrayPP, size_t *countP)
00092 {
00093     static const int8_t permittedTxValues[] = {
00094         -40, -30, -20, -16, -12, -8, -4, 0, 4
00095     };
00096 
00097     *valueArrayPP = permittedTxValues;
00098     *countP = sizeof(permittedTxValues) / sizeof(int8_t);
00099 }
00100 
00101 ble_error_t nRF51822n::init(void)
00102 {
00103     /* ToDo: Clear memory contents, reset the SD, etc. */
00104     btle_init();
00105 
00106     reset();
00107 
00108     return BLE_ERROR_NONE;
00109 }
00110 
00111 ble_error_t nRF51822n::shutdown(void)
00112 {
00113     return (softdevice_handler_sd_disable() == NRF_SUCCESS) ? BLE_ERROR_NONE : BLE_STACK_BUSY;
00114 }
00115 
00116 ble_error_t nRF51822n::reset(void)
00117 {
00118     nrf_delay_us(500000);
00119 
00120     /* Wait for the radio to come back up */
00121     nrf_delay_us(1000000);
00122 
00123     return BLE_ERROR_NONE;
00124 }
00125 
00126 void
00127 nRF51822n::waitForEvent(void)
00128 {
00129     sd_app_evt_wait();
00130 }