shared/timeutils: Standardize supported date range on all platforms.

This is code makes sure that time functions work properly on a
reasonable date range, on all platforms, regardless of the epoch.
The suggested minimum range is 1970 to 2099.

In order to reduce code footprint, code to support far away dates
is only enabled specified by the port.

New types are defined to identify timestamps.

The implementation with the smallest code footprint is when
support timerange is limited to 1970-2099 and Epoch is 1970.
This makes it possible to use 32 bit unsigned integers for
all timestamps.

On ARM4F, adding support for dates up to year 3000 adds
460 bytes of code. Supporting dates back to 1600 adds
another 44 bytes of code.

Signed-off-by: Yoctopuce dev <dev@yoctopuce.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/extmod/vfs_lfsx.c b/extmod/vfs_lfsx.c
index 404eab84f..372037784 100644
--- a/extmod/vfs_lfsx.c
+++ b/extmod/vfs_lfsx.c
@@ -378,7 +378,7 @@ static mp_obj_t MP_VFS_LFSx(stat)(mp_obj_t self_in, mp_obj_t path_in) {
         mp_raise_OSError(-ret);
     }
 
-    mp_uint_t mtime = 0;
+    mp_timestamp_t mtime = 0;
     #if LFS_BUILD_VERSION == 2
     uint8_t mtime_buf[8];
     lfs2_ssize_t sz = lfs2_getattr(&self->lfs, path, LFS_ATTR_MTIME, &mtime_buf, sizeof(mtime_buf));
@@ -400,9 +400,9 @@ static mp_obj_t MP_VFS_LFSx(stat)(mp_obj_t self_in, mp_obj_t path_in) {
     t->items[4] = MP_OBJ_NEW_SMALL_INT(0); // st_uid
     t->items[5] = MP_OBJ_NEW_SMALL_INT(0); // st_gid
     t->items[6] = mp_obj_new_int_from_uint(info.size); // st_size
-    t->items[7] = mp_obj_new_int_from_uint(mtime); // st_atime
-    t->items[8] = mp_obj_new_int_from_uint(mtime); // st_mtime
-    t->items[9] = mp_obj_new_int_from_uint(mtime); // st_ctime
+    t->items[7] = timeutils_obj_from_timestamp(mtime); // st_atime
+    t->items[8] = timeutils_obj_from_timestamp(mtime); // st_mtime
+    t->items[9] = timeutils_obj_from_timestamp(mtime); // st_ctime
 
     return MP_OBJ_FROM_PTR(t);
 }