1 files changed, 84 insertions, 0 deletions

diff --git a/lib/chibios/os/various/fatfs_bindings/fatfs_syscall.c b/lib/chibios/os/various/fatfs_bindings/fatfs_syscall.c
new file mode 100644
index 000000000..51bfec127
--- /dev/null
+++ b/lib/chibios/os/various/fatfs_bindings/fatfs_syscall.c
@@ -0,0 +1,84 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+    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.
+*/
+
+/*------------------------------------------------------------------------*/
+/* Sample code of OS dependent controls for FatFs                         */
+/* (C)ChaN, 2014                                                          */
+/*------------------------------------------------------------------------*/
+
+#include "hal.h"
+#include "ff.h"
+
+#if FF_FS_REENTRANT
+/*------------------------------------------------------------------------*/
+/* Static array of Synchronization Objects                                */
+/*------------------------------------------------------------------------*/
+static semaphore_t ff_sem[FF_VOLUMES];
+
+/*------------------------------------------------------------------------*/
+/* Create a Synchronization Object                                        */
+/*------------------------------------------------------------------------*/
+int ff_cre_syncobj(BYTE vol, FF_SYNC_t *sobj) {
+
+  *sobj = &ff_sem[vol];
+  chSemObjectInit(*sobj, 1);
+  return TRUE;
+}
+
+/*------------------------------------------------------------------------*/
+/* Delete a Synchronization Object                                        */
+/*------------------------------------------------------------------------*/
+int ff_del_syncobj(FF_SYNC_t sobj) {
+
+  chSemReset(sobj, 0);
+  return TRUE;
+}
+
+/*------------------------------------------------------------------------*/
+/* Request Grant to Access the Volume                                     */
+/*------------------------------------------------------------------------*/
+int ff_req_grant(FF_SYNC_t sobj) {
+
+  msg_t msg = chSemWaitTimeout(sobj, (systime_t)FF_FS_TIMEOUT);
+  return msg == MSG_OK;
+}
+
+/*------------------------------------------------------------------------*/
+/* Release Grant to Access the Volume                                     */
+/*------------------------------------------------------------------------*/
+void ff_rel_grant(FF_SYNC_t sobj) {
+
+  chSemSignal(sobj);
+}
+#endif /* FF_FS_REENTRANT */
+
+#if FF_USE_LFN == 3     /* LFN with a working buffer on the heap */
+/*------------------------------------------------------------------------*/
+/* Allocate a memory block                                                */
+/*------------------------------------------------------------------------*/
+void *ff_memalloc(UINT size) {
+
+  return chHeapAlloc(NULL, size);
+}
+
+/*------------------------------------------------------------------------*/
+/* Free a memory block                                                    */
+/*------------------------------------------------------------------------*/
+void ff_memfree(void *mblock) {
+
+  chHeapFree(mblock);
+}
+#endif /* FF_USE_LFN == 3 */