1 files changed, 31 insertions, 0 deletions
diff --git a/firmware/zpu/lib/mdelay.c b/firmware/zpu/lib/mdelay.c
new file mode 100644
index 000000000..8f9b14112
--- /dev/null
+++ b/firmware/zpu/lib/mdelay.c
@@ -0,0 +1,31 @@
+/* -*- c -*- */
+/*
+ * Copyright 2007 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "mdelay.h"
+#include "memory_map.h"
+
+void mdelay(int ms){
+  if (hwconfig_simulation_p()) return;
+  for(int i = 0; i < ms; i++){
+    static const uint32_t num_ticks = MASTER_CLK_RATE/1000;
+    const uint32_t ticks_begin = router_status->time64_ticks_rb;
+    while((router_status->time64_ticks_rb - ticks_begin) < num_ticks){
+      /*NOP*/
+    }
+  }
+}