Diff: source/nRF5xGap.h

Revision:

478:b5b54bf15533

Parent:

475:fe3d08b3a8e9

Child:

479:f6e4a3f0a09a

--- a/source/nRF5xGap.h	Thu Nov 26 14:33:46 2015 +0000
+++ b/source/nRF5xGap.h	Thu Nov 26 15:02:39 2015 +0000
@@ -26,11 +26,7 @@
 #include "ble/GapScanningParams.h"
 
 #include "nrf_soc.h"
-
-extern "C" {
 #include "ble_radio_notification.h"
-}
-
 #include "btle_security.h"
 
 void radioNotificationStaticCallback(bool param);
@@ -113,64 +109,12 @@
 #endif
 
 private:
-#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.
-     */
-
-    bool    radioNotificationCallbackParam; /* parameter to be passed into the Timeout-generated radio notification callback. */
-    Timeout radioNotificationTimeout;
-
-    /*
-     * A helper function to post radio notification callbacks through MINAR when using mbed OS.
-     */
-    void postRadioNotificationCallback(void) {
-        minar::Scheduler::postCallback(
-            mbed::util::FunctionPointer1<void, bool>(&radioNotificationCallback, &FunctionPointerWithContext<bool>::call).bind(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) {
-#ifdef YOTTA_CFG_MBED_OS
-        /* When using mbed OS the callback to the user-defined function will be posted through minar */
-        radioNotificationCallbackParam = param;
-        radioNotificationTimeout.attach_us(this, &nRF5xGap::postRadioNotificationCallback, 0);
-#else
         radioNotificationCallback.call(param);
-#endif
     }
     friend void radioNotificationStaticCallback(bool param); /* allow invocations of processRadioNotificationEvent() */