1 files changed, 108 insertions, 0 deletions
diff --git a/os/various/reledge_bindings/SAMA5D2x/osmutex.c b/os/various/reledge_bindings/SAMA5D2x/osmutex.c
new file mode 100644
index 000000000..b921a8aa9
--- /dev/null
+++ b/os/various/reledge_bindings/SAMA5D2x/osmutex.c
@@ -0,0 +1,108 @@
+/*             ----> DO NOT REMOVE THE FOLLOWING NOTICE <----
+
+                   Copyright (c) 2014-2017 Datalight, Inc.
+                       All Rights Reserved Worldwide.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; use version 2 of the License.
+
+    This program is distributed in the hope that it will be useful,
+    but "AS-IS," WITHOUT ANY WARRANTY; without even the implied warranty
+    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+/*  Businesses and individuals that for commercial or other reasons cannot
+    comply with the terms of the GPLv2 license may obtain a commercial license
+    before incorporating Reliance Edge into proprietary software for
+    distribution in any form.  Visit http://www.datalight.com/reliance-edge for
+    more information.
+*/
+/** @file
+    @brief Implements a synchronization object to provide mutual exclusion.
+*/
+#include "ch.h"
+#include "hal.h"
+#if (HAL_USE_SDMMC == TRUE)
+#include "sama_sdmmc_lld.h"
+#if SDMMC_USE_RELEDGE_LIB == 1
+#include <redfs.h>
+#include <redosdeviations.h>
+
+#if REDCONF_TASK_COUNT > 1U
+
+
+static semaphore_t red_sem;
+
+
+/** @brief Initialize the mutex.
+
+    After initialization, the mutex is in the released state.
+
+    The behavior of calling this function when the mutex is still initialized
+    is undefined.
+
+    @return A negated ::REDSTATUS code indicating the operation result.
+
+    @retval 0   Operation was successful.
+*/
+REDSTATUS RedOsMutexInit(void)
+{
+	 chSemObjectInit(&red_sem, 1);
+    
+	 return 0;
+}
+
+
+/** @brief Uninitialize the mutex.
+
+    The behavior of calling this function when the mutex is not initialized is
+    undefined; likewise, the behavior of uninitializing the mutex when it is
+    in the acquired state is undefined.
+
+    @return A negated ::REDSTATUS code indicating the operation result.
+
+    @retval 0   Operation was successful.
+*/
+REDSTATUS RedOsMutexUninit(void)
+{
+	chSemReset(&red_sem, 0);
+
+    return 0;
+}
+
+
+/** @brief Acquire the mutex.
+
+    The behavior of calling this function when the mutex is not initialized is
+    undefined; likewise, the behavior of recursively acquiring the mutex is
+    undefined.
+*/
+void RedOsMutexAcquire(void)
+{
+	chSemWaitTimeout(&red_sem, TIME_INFINITE);
+}
+
+
+/** @brief Release the mutex.
+
+    The behavior is undefined in the following cases:
+
+    - Releasing the mutex when the mutex is not initialized.
+    - Releasing the mutex when it is not in the acquired state.
+    - Releasing the mutex from a task or thread other than the one which
+      acquired the mutex.
+*/
+void RedOsMutexRelease(void)
+{
+	chSemSignal(&red_sem);
+}
+
+#endif
+#endif
+#endif
+