stm32/main: Catch and report corrupted lfs filesystem at startup.

Signed-off-by: Andrew Leech <[email protected]>
andrewleech · Nov 29, 2023 · 0fe810b · 0fe810b
1 parent 8003704
commit 0fe810b
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/ports/stm32/main.c b/ports/stm32/main.c
@@ -186,7 +186,15 @@ MP_NOINLINE STATIC bool init_flash_fs(uint reset_mode) {
     if (len != -1) {
         // Detected a littlefs filesystem so create correct block device for it
         mp_obj_t args[] = { MP_OBJ_NEW_QSTR(MP_QSTR_len), MP_OBJ_NEW_SMALL_INT(len) };
-        bdev = MP_OBJ_TYPE_GET_SLOT(&pyb_flash_type, make_new)(&pyb_flash_type, 0, 1, args);
+        nlr_buf_t nlr;
+        if (nlr_push(&nlr) == 0) {
+            bdev = MP_OBJ_TYPE_GET_SLOT(&pyb_flash_type, make_new)(&pyb_flash_type, 0, 1, args);
+            nlr_pop();
+        } else {
+            // Uncaught exception; len must be an invalid length.
+            mp_printf(&mp_plat_print, "MPY: corrupted filesystem\n");
+            mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
+        }
     }
 
     #endif