SDK improvements (#352)

TactilityC additions for:
- C randomization functions
- Tactility app paths
- Tactility locks

TactilityC/Include/tt_lock.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include "tt_kernel.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** A handle that represents a lock instance. A lock could be a Mutex or similar construct */
+typedef void* LockHandle;
+
+/**
+ * Attempt to lock the lock.
+ * @param[in] handle the handle that represents the mutex instance
+ * @param[in] timeout the maximum amount of ticks to wait when trying to lock
+ * @return true when the lock was acquired
+ */
+bool tt_lock_acquire(LockHandle handle, TickType timeout);
+
+/**
+ * Attempt to unlock the lock.
+ * @param[in] handle the handle that represents the mutex instance
+ * @return true when the lock was unlocked
+ */
+bool tt_lock_release(LockHandle handle);
+
+/** Free the memory for this lock
+ * @param[in] handle the handle that represents the mutex instance
+ */
+void tt_lock_free(LockHandle handle);
+
+#ifdef __cplusplus
+}
+#endif