3 files changed, 31 insertions, 0 deletions

diff --git a/firmware/common/dircache.c b/firmware/common/dircache.c
index 97c58842d5..ab33d1213d 100644
--- a/firmware/common/dircache.c
+++ b/firmware/common/dircache.c
@@ -37,6 +37,10 @@
 #include "usb.h"
 #include "file.h"
 #include "buffer.h"
+#if CONFIG_RTC
+#include "time.h"
+#include "timefuncs.h"
+#endif
 
 /* Queue commands. */
 #define DIRCACHE_BUILD 1
@@ -956,6 +960,31 @@ void dircache_update_filesize(int fd, long newsize, long startcluster)
     fd_bindings[fd]->size = newsize;
     fd_bindings[fd]->startcluster = startcluster;
 }
+void dircache_update_filetime(int fd)
+{
+#if CONFIG_RTC == 0
+    (void)fd;
+#else
+    short year;
+    struct tm *now = get_time();
+    if (!dircache_initialized || fd < 0)
+        return ;
+
+    if (fd_bindings[fd] == NULL)
+    {
+        logf("dircache fd access error");
+        dircache_initialized = false;
+        return ;
+    }
+    year = now->tm_year+1900-1980;
+    fd_bindings[fd]->wrtdate = (((year)&0x7f)<<9)           |
+                               (((now->tm_mon+1)&0xf)<<5)   |
+                               (((now->tm_mday)&0x1f));
+    fd_bindings[fd]->wrttime = (((now->tm_hour)&0x1f)<<11)  |
+                               (((now->tm_min)&0x3f)<<5)    |
+                               (((now->tm_sec/2)&0x1f));
+#endif
+}
 
 void dircache_mkdir(const char *path)
 { /* Test ok. */
diff --git a/firmware/common/file.c b/firmware/common/file.c
index d526f28859..ea2471ae92 100644
--- a/firmware/common/file.c
+++ b/firmware/common/file.c
@@ -250,6 +250,7 @@ int close(int fd)
             return rc * 10 - 3;
 #ifdef HAVE_DIRCACHE
         dircache_update_filesize(fd, file->size, file->fatfile.firstcluster);
+        dircache_update_filetime(fd);
 #endif
     }
 
diff --git a/firmware/include/dircache.h b/firmware/include/dircache.h
index 6b47f3f1bb..7d2111697c 100644
--- a/firmware/include/dircache.h
+++ b/firmware/include/dircache.h
@@ -97,6 +97,7 @@ void dircache_copy_path(const struct dircache_entry *entry, char *buf, int size)
 
 void dircache_bind(int fd, const char *path);
 void dircache_update_filesize(int fd, long newsize, long startcluster);
+void dircache_update_filetime(int fd);
 void dircache_mkdir(const char *path);
 void dircache_rmdir(const char *path);
 void dircache_remove(const char *name);