Nordic stack and drivers for the mbed BLE API
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Diff: TARGET_NRF5/source/nRF5xn.cpp
- Revision:
- 638:c90ae1400bf2
diff -r f7faad332abc -r c90ae1400bf2 TARGET_NRF5/source/nRF5xn.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_NRF5/source/nRF5xn.cpp Wed Sep 14 14:39:43 2016 +0100 @@ -0,0 +1,220 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifdef YOTTA_CFG_MBED_OS + #include "mbed-drivers/mbed.h" +#else + #include "mbed.h" +#endif +#include "nRF5xn.h" +#include "ble/blecommon.h" +#include "nrf_soc.h" + +#include "btle/btle.h" +#include "btle/custom/custom_helper.h" +#include "nrf_delay.h" + +extern "C" { +#include "softdevice_handler.h" +} + +/** + * The singleton which represents the nRF51822 transport for the BLE. + */ +static nRF5xn deviceInstance; + +/** + * BLE-API requires an implementation of the following function in order to + * obtain its transport handle. + */ +BLEInstanceBase * +createBLEInstance(void) +{ + return &nRF5xn::Instance(BLE::DEFAULT_INSTANCE); +} + +nRF5xn& nRF5xn::Instance(BLE::InstanceID_t instanceId) +{ + return deviceInstance; +} + +nRF5xn::nRF5xn(void) : + initialized(false), + instanceID(BLE::DEFAULT_INSTANCE), + gapInstance(), + gattServerInstance(NULL), + gattClientInstance(NULL), + securityManagerInstance(NULL) +{ +} + +nRF5xn::~nRF5xn(void) +{ +} + +const char *nRF5xn::getVersion(void) +{ + if (!initialized) { + return "INITIALIZATION_INCOMPLETE"; + } + + static char versionString[32]; + static bool versionFetched = false; + + if (!versionFetched) { + ble_version_t version; + if ((sd_ble_version_get(&version) == NRF_SUCCESS) && (version.company_id == 0x0059)) { + switch (version.version_number) { + case 0x07: + case 0x08: + snprintf(versionString, sizeof(versionString), "Nordic BLE4.1 ver:%u fw:%04x", version.version_number, version.subversion_number); + break; + default: + snprintf(versionString, sizeof(versionString), "Nordic (spec unknown) ver:%u fw:%04x", version.version_number, version.subversion_number); + break; + } + versionFetched = true; + } else { + strncpy(versionString, "unknown", sizeof(versionString)); + } + } + + return versionString; +} + +/**************************************************************************/ +/*! + @brief Initialize the BLE stack. + + @returns ble_error_t + + @retval BLE_ERROR_NONE if everything executed properly and + BLE_ERROR_ALREADY_INITIALIZED if the stack has already + been initialized (possibly through a call to nRF5xn::init()). + BLE_ERROR_INTERNAL_STACK_FAILURE is returned if initialization + of the internal stack (SoftDevice) failed. + +*/ +/**************************************************************************/ +ble_error_t nRF5xn::init(BLE::InstanceID_t instanceID, FunctionPointerWithContext<BLE::InitializationCompleteCallbackContext *> callback) +{ + if (initialized) { + BLE::InitializationCompleteCallbackContext context = { + BLE::Instance(instanceID), + BLE_ERROR_ALREADY_INITIALIZED + }; + callback.call(&context); + return BLE_ERROR_ALREADY_INITIALIZED; + } + + instanceID = instanceID; + + /* ToDo: Clear memory contents, reset the SD, etc. */ + if (btle_init() != ERROR_NONE) { + return BLE_ERROR_INTERNAL_STACK_FAILURE; + } + + initialized = true; + BLE::InitializationCompleteCallbackContext context = { + BLE::Instance(instanceID), + BLE_ERROR_NONE + }; + callback.call(&context); + return BLE_ERROR_NONE; +} + +/**************************************************************************/ +/*! + @brief Purge the BLE stack of GATT and GAP state. + + @returns ble_error_t + + @retval BLE_ERROR_NONE + Everything executed properly + + @note When using S110, GattClient::shutdown() will not be called + since Gatt client features are not supported. +*/ +/**************************************************************************/ +ble_error_t nRF5xn::shutdown(void) +{ + if (!initialized) { + return BLE_ERROR_INITIALIZATION_INCOMPLETE; + } + + /* + * Shutdown the SoftDevice first. This is because we need to disable all + * interrupts. Otherwise if we clear the BLE API and glue code first there + * will be many NULL references and no config information which could lead + * to errors if the shutdown process is interrupted. + */ + if (softdevice_handler_sd_disable() != NRF_SUCCESS) { + return BLE_STACK_BUSY; + } + + + /* Shutdown the BLE API and nRF51 glue code */ + ble_error_t error; + + if (gattServerInstance != NULL) { + error = gattServerInstance->reset(); + if (error != BLE_ERROR_NONE) { + return error; + } + } + + if (securityManagerInstance != NULL) { + error = securityManagerInstance->reset(); + if (error != BLE_ERROR_NONE) { + return error; + } + } + + /* S110 does not support BLE client features, nothing to reset. */ +#if !defined(TARGET_MCU_NRF51_16K_S110) && !defined(TARGET_MCU_NRF51_32K_S110) + if (gattClientInstance != NULL) { + error = gattClientInstance->reset(); + if (error != BLE_ERROR_NONE) { + return error; + } + } +#endif + + /* Gap instance is always present */ + error = gapInstance.reset(); + if (error != BLE_ERROR_NONE) { + return error; + } + + custom_reset_128bits_uuid_table(); + + initialized = false; + return BLE_ERROR_NONE; +} + +void +nRF5xn::waitForEvent(void) +{ + processEvents(); + sd_app_evt_wait(); +} + +void nRF5xn::processEvents() { + if (isEventsSignaled) { + isEventsSignaled = false; + intern_softdevice_events_execute(); + } +}