Diff: TARGET_MCU_NRF51822/source/nRF5xn.cpp

Revision:

638:c90ae1400bf2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_MCU_NRF51822/source/nRF5xn.cpp	Wed Sep 14 14:39:43 2016 +0100
@@ -0,0 +1,217 @@
+/* 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;
+
+/**
+ * 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;
+    }
+
+    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();
+    }
+}