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/* 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 "nrf_delay.h"
extern "C" {
#include "softdevice_handler.h"
}
/**
* The singleton which represents the nRF51822 transport for the BLE.
*/
static nRF5xn *deviceInstance = NULL;
/**
* 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)
{
if (deviceInstance == NULL)
deviceInstance = new nRF5xn();
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;
}
initialized = false;
return BLE_ERROR_NONE;
}
void
nRF5xn::waitForEvent(void)
{
sd_app_evt_wait();
}
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