Diff: source/nRF5xGap.h

Revision:

541:884f95bf5351

Parent:

526:ec7b14ac1522

Child:

546:1e147322b2b5

--- a/source/nRF5xGap.h	Thu Dec 10 10:35:59 2015 +0000
+++ b/source/nRF5xGap.h	Mon Jan 11 10:19:02 2016 +0000
@@ -1,207 +1,131 @@
-/* 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.
- */
-
-#ifndef __NRF5x_GAP_H__
-#define __NRF5x_GAP_H__
-
-#include "mbed.h"
-#include "ble/blecommon.h"
-#include "ble.h"
-#include "ble/GapAdvertisingParams.h"
-#include "ble/GapAdvertisingData.h"
-#include "ble/Gap.h"
-#include "ble/GapScanningParams.h"
-
-#include "nrf_soc.h"
-
-extern "C" {
-#include "ble_radio_notification.h"
-}
-
-#include "btle_security.h"
-
-void radioNotificationStaticCallback(bool param);
-
-/**************************************************************************/
-/*!
-    \brief
-
-*/
-/**************************************************************************/
-class nRF5xGap : public Gap
-{
-public:
-    static nRF5xGap &getInstance();
-
-    /* Functions that must be implemented from Gap */
-    virtual ble_error_t setAddress(AddressType_t  type,  const Address_t address);
-    virtual ble_error_t getAddress(AddressType_t *typeP, Address_t address);
-    virtual ble_error_t setAdvertisingData(const GapAdvertisingData &, const GapAdvertisingData &);
-
-    virtual uint16_t    getMinAdvertisingInterval(void) const {return GapAdvertisingParams::ADVERTISEMENT_DURATION_UNITS_TO_MS(BLE_GAP_ADV_INTERVAL_MIN);}
-    virtual uint16_t    getMinNonConnectableAdvertisingInterval(void) const {return GapAdvertisingParams::ADVERTISEMENT_DURATION_UNITS_TO_MS(BLE_GAP_ADV_NONCON_INTERVAL_MIN);}
-    virtual uint16_t    getMaxAdvertisingInterval(void) const {return GapAdvertisingParams::ADVERTISEMENT_DURATION_UNITS_TO_MS(BLE_GAP_ADV_INTERVAL_MAX);}
-
-    virtual ble_error_t startAdvertising(const GapAdvertisingParams &);
-    virtual ble_error_t stopAdvertising(void);
-    virtual ble_error_t connect(const Address_t, Gap::AddressType_t peerAddrType, const ConnectionParams_t *connectionParams, const GapScanningParams *scanParams);
-    virtual ble_error_t disconnect(Handle_t connectionHandle, DisconnectionReason_t reason);
-    virtual ble_error_t disconnect(DisconnectionReason_t reason);
-
-    virtual ble_error_t setDeviceName(const uint8_t *deviceName);
-    virtual ble_error_t getDeviceName(uint8_t *deviceName, unsigned *lengthP);
-    virtual ble_error_t setAppearance(GapAdvertisingData::Appearance appearance);
-    virtual ble_error_t getAppearance(GapAdvertisingData::Appearance *appearanceP);
-
-    virtual ble_error_t setTxPower(int8_t txPower);
-    virtual void        getPermittedTxPowerValues(const int8_t **valueArrayPP, size_t *countP);
-
-    void     setConnectionHandle(uint16_t con_handle);
-    uint16_t getConnectionHandle(void);
-
-    virtual ble_error_t getPreferredConnectionParams(ConnectionParams_t *params);
-    virtual ble_error_t setPreferredConnectionParams(const ConnectionParams_t *params);
-    virtual ble_error_t updateConnectionParams(Handle_t handle, const ConnectionParams_t *params);
-
-    virtual ble_error_t initRadioNotification(void) {
-        if (ble_radio_notification_init(NRF_APP_PRIORITY_HIGH, NRF_RADIO_NOTIFICATION_DISTANCE_800US, radioNotificationStaticCallback) == NRF_SUCCESS) {
-            return BLE_ERROR_NONE;
-        }
-
-        return BLE_ERROR_UNSPECIFIED;
-    }
-
-/* Observer role is not supported by S110, return BLE_ERROR_NOT_IMPLEMENTED */
-#if !defined(TARGET_MCU_NRF51_16K_S110) && !defined(TARGET_MCU_NRF51_32K_S110)
-    virtual ble_error_t startRadioScan(const GapScanningParams &scanningParams) {
-        ble_gap_scan_params_t scanParams = {
-            .active      = scanningParams.getActiveScanning(), /**< If 1, perform active scanning (scan requests). */
-            .selective   = 0,    /**< If 1, ignore unknown devices (non whitelisted). */
-            .p_whitelist = NULL, /**< Pointer to whitelist, NULL if none is given. */
-            .interval    = scanningParams.getInterval(),  /**< Scan interval between 0x0004 and 0x4000 in 0.625ms units (2.5ms to 10.24s). */
-            .window      = scanningParams.getWindow(),    /**< Scan window between 0x0004 and 0x4000 in 0.625ms units (2.5ms to 10.24s). */
-            .timeout     = scanningParams.getTimeout(),   /**< Scan timeout between 0x0001 and 0xFFFF in seconds, 0x0000 disables timeout. */
-        };
-
-        if (sd_ble_gap_scan_start(&scanParams) != NRF_SUCCESS) {
-            return BLE_ERROR_PARAM_OUT_OF_RANGE;
-        }
-
-        return BLE_ERROR_NONE;
-    }
-
-    virtual ble_error_t stopScan(void) {
-        if (sd_ble_gap_scan_stop() == NRF_SUCCESS) {
-            return BLE_ERROR_NONE;
-        }
-
-        return BLE_STACK_BUSY;
-    }
-#endif
-
-private:
-    bool    radioNotificationCallbackParam; /* parameter to be passed into the Timeout-generated radio notification callback. */
-    Timeout radioNotificationTimeout;
-
-    /*
-     * A helper function to post radio notification callbacks with low interrupt priority.
-     */
-    void postRadioNotificationCallback(void) {
-#ifdef YOTTA_CFG_MBED_OS
-        /*
-         * In mbed OS, all user-facing BLE events (interrupts) are posted to the
-         * MINAR scheduler to be executed as callbacks in thread mode. MINAR guards
-         * its critical sections from interrupts by acquiring CriticalSectionLock,
-         * which results in a call to sd_nvic_critical_region_enter(). Thus, it is
-         * safe to invoke MINAR APIs from interrupt context as long as those
-         * interrupts are blocked by sd_nvic_critical_region_enter().
-         *
-         * Radio notifications are a special case for the above. The Radio
-         * Notification IRQ is handled at a very high priority--higher than the
-         * level blocked by sd_nvic_critical_region_enter(). Thus Radio Notification
-         * events can preempt MINAR's critical sections. Using MINAR APIs (such as
-         * posting an event) directly in processRadioNotification() may result in a
-         * race condition ending in a hard-fault.
-         *
-         * The solution is to *not* call MINAR APIs directly from the Radio
-         * Notification handling; i.e. to do the bulk of RadioNotification
-         * processing at a reduced priority which respects MINAR's critical
-         * sections. Unfortunately, on a cortex-M0, there is no clean way to demote
-         * priority for the currently executing interrupt--we wouldn't want to
-         * demote the radio notification handling anyway because it is sensitive to
-         * timing, and the system expects to finish this handling very quickly. The
-         * workaround is to employ a Timeout to trigger
-         * postRadioNotificationCallback() after a very short delay (~0 us) and post
-         * the MINAR callback that context.
-         *
-         * !!!WARNING!!! Radio notifications are very time critical events. The
-         * current solution is expected to work under the assumption that
-         * postRadioNotificationCalback() will be executed BEFORE the next radio
-         * notification event is generated.
-         */
-        minar::Scheduler::postCallback(
-            mbed::util::FunctionPointer1<void, bool>(&radioNotificationCallback, &FunctionPointerWithContext<bool>::call).bind(radioNotificationCallbackParam)
-        );
-#else
-        /*
-         * In mbed classic, all user-facing BLE events execute callbacks in interrupt
-         * mode. Radio Notifications are a special case because its IRQ is handled at
-         * a very high priority. Thus Radio Notification events can preempt other
-         * operations that require interaction with the SoftDevice such as advertising
-         * payload updates and changing the Gap state. Therefore, executing a Radio
-         * Notification callback directly from processRadioNotification() may result
-         * in a race condition ending in a hard-fault.
-         *
-         * The solution is to *not* execute the Radio Notification callback directly
-         * from the Radio Notification handling; i.e. to do the bulk of the
-         * Radio Notification processing at a reduced priority. Unfortunately, on a
-         * cortex-M0, there is no clean way to demote priority for the currently
-         * executing interrupt--we wouldn't want to demote the radio notification
-         * handling anyway because it is sensitive to timing, and the system expects
-         * to finish this handling very quickly. The workaround is to employ a Timeout
-         * to trigger postRadioNotificationCallback() after a very short delay (~0 us)
-         * and execute the callback in that context.
-         *
-         * !!!WARNING!!! Radio notifications are very time critical events. The
-         * current solution is expected to work under the assumption that
-         * postRadioNotificationCalback() will be executed BEFORE the next radio
-         * notification event is generated.
-         */
-        radioNotificationCallback.call(radioNotificationCallbackParam);
-#endif /* #ifdef YOTTA_CFG_MBED_OS */
-    }
-
-    /**
-     * A helper function to process radio-notification events; to be called internally.
-     * @param param [description]
-     */
-    void processRadioNotificationEvent(bool param) {
-        radioNotificationCallbackParam = param;
-        radioNotificationTimeout.attach_us(this, &nRF5xGap::postRadioNotificationCallback, 0);
-    }
-    friend void radioNotificationStaticCallback(bool param); /* allow invocations of processRadioNotificationEvent() */
-
-private:
-    uint16_t m_connectionHandle;
-    nRF5xGap() {
-        m_connectionHandle = BLE_CONN_HANDLE_INVALID;
-    }
-
-    nRF5xGap(nRF5xGap const &);
-    void operator=(nRF5xGap const &);
-};
-
+/* 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.
+ */
+
+#ifndef __NRF5x_GAP_H__
+#define __NRF5x_GAP_H__
+
+#include "mbed.h"
+#include "ble/blecommon.h"
+#include "ble.h"
+#include "ble/GapAdvertisingParams.h"
+#include "ble/GapAdvertisingData.h"
+#include "ble/Gap.h"
+#include "ble/GapScanningParams.h"
+
+#include "nrf_soc.h"
+#include "ble_radio_notification.h"
+#include "btle_security.h"
+
+void radioNotificationStaticCallback(bool param);
+
+/**************************************************************************/
+/*!
+    \brief
+
+*/
+/**************************************************************************/
+class nRF5xGap : public Gap
+{
+public:
+    static nRF5xGap &getInstance();
+
+    /* Functions that must be implemented from Gap */
+    virtual ble_error_t setAddress(AddressType_t  type,  const Address_t address);
+    virtual ble_error_t getAddress(AddressType_t *typeP, Address_t address);
+    virtual ble_error_t setAdvertisingData(const GapAdvertisingData &, const GapAdvertisingData &);
+
+    virtual uint16_t    getMinAdvertisingInterval(void) const {return GapAdvertisingParams::ADVERTISEMENT_DURATION_UNITS_TO_MS(BLE_GAP_ADV_INTERVAL_MIN);}
+    virtual uint16_t    getMinNonConnectableAdvertisingInterval(void) const {return GapAdvertisingParams::ADVERTISEMENT_DURATION_UNITS_TO_MS(BLE_GAP_ADV_NONCON_INTERVAL_MIN);}
+    virtual uint16_t    getMaxAdvertisingInterval(void) const {return GapAdvertisingParams::ADVERTISEMENT_DURATION_UNITS_TO_MS(BLE_GAP_ADV_INTERVAL_MAX);}
+
+    virtual ble_error_t startAdvertising(const GapAdvertisingParams &);
+    virtual ble_error_t stopAdvertising(void);
+    virtual ble_error_t connect(const Address_t, Gap::AddressType_t peerAddrType, const ConnectionParams_t *connectionParams, const GapScanningParams *scanParams);
+    virtual ble_error_t disconnect(Handle_t connectionHandle, DisconnectionReason_t reason);
+    virtual ble_error_t disconnect(DisconnectionReason_t reason);
+
+    virtual ble_error_t setDeviceName(const uint8_t *deviceName);
+    virtual ble_error_t getDeviceName(uint8_t *deviceName, unsigned *lengthP);
+    virtual ble_error_t setAppearance(GapAdvertisingData::Appearance appearance);
+    virtual ble_error_t getAppearance(GapAdvertisingData::Appearance *appearanceP);
+
+    virtual ble_error_t setTxPower(int8_t txPower);
+    virtual void        getPermittedTxPowerValues(const int8_t **valueArrayPP, size_t *countP);
+
+    void     setConnectionHandle(uint16_t con_handle);
+    uint16_t getConnectionHandle(void);
+
+    virtual ble_error_t getPreferredConnectionParams(ConnectionParams_t *params);
+    virtual ble_error_t setPreferredConnectionParams(const ConnectionParams_t *params);
+    virtual ble_error_t updateConnectionParams(Handle_t handle, const ConnectionParams_t *params);
+
+    virtual ble_error_t initRadioNotification(void) {
+        if (ble_radio_notification_init(NRF_APP_PRIORITY_HIGH, NRF_RADIO_NOTIFICATION_DISTANCE_800US, radioNotificationStaticCallback) == NRF_SUCCESS) {
+            return BLE_ERROR_NONE;
+        }
+
+        return BLE_ERROR_UNSPECIFIED;
+    }
+
+/* Observer role is not supported by S110, return BLE_ERROR_NOT_IMPLEMENTED */
+#if !defined(TARGET_MCU_NRF51_16K_S110) && !defined(TARGET_MCU_NRF51_32K_S110)
+    virtual ble_error_t startRadioScan(const GapScanningParams &scanningParams) {
+        ble_gap_scan_params_t scanParams = {
+            .active      = scanningParams.getActiveScanning(), /**< If 1, perform active scanning (scan requests). */
+            .selective   = 0,    /**< If 1, ignore unknown devices (non whitelisted). */
+            .p_whitelist = NULL, /**< Pointer to whitelist, NULL if none is given. */
+            .interval    = scanningParams.getInterval(),  /**< Scan interval between 0x0004 and 0x4000 in 0.625ms units (2.5ms to 10.24s). */
+            .window      = scanningParams.getWindow(),    /**< Scan window between 0x0004 and 0x4000 in 0.625ms units (2.5ms to 10.24s). */
+            .timeout     = scanningParams.getTimeout(),   /**< Scan timeout between 0x0001 and 0xFFFF in seconds, 0x0000 disables timeout. */
+        };
+
+        if (sd_ble_gap_scan_start(&scanParams) != NRF_SUCCESS) {
+            return BLE_ERROR_PARAM_OUT_OF_RANGE;
+        }
+
+        return BLE_ERROR_NONE;
+    }
+
+    virtual ble_error_t stopScan(void) {
+        if (sd_ble_gap_scan_stop() == NRF_SUCCESS) {
+            return BLE_ERROR_NONE;
+        }
+
+        return BLE_STACK_BUSY;
+    }
+#endif
+
+private:
+    /**
+     * A helper function to process radio-notification events; to be called internally.
+     * @param param [description]
+     */
+    void processRadioNotificationEvent(bool param) {
+        radioNotificationCallback.call(param);
+    }
+    friend void radioNotificationStaticCallback(bool param); /* allow invocations of processRadioNotificationEvent() */
+
+private:
+    uint16_t m_connectionHandle;
+    nRF5xGap() {
+        m_connectionHandle = BLE_CONN_HANDLE_INVALID;
+    }
+
+    nRF5xGap(nRF5xGap const &);
+    void operator=(nRF5xGap const &);
+};
+
 #endif // ifndef __NRF5x_GAP_H__
\ No newline at end of file