diff --git a/src/main.c b/src/main.c
index e4f2f7f..ff66574 100644
--- a/src/main.c
+++ b/src/main.c
@@ -80,7 +80,7 @@ int main(int argc, char **argv) {
 
     if (strcmp(buffer, "ok") == 0) {
         //TDDO
-        usleep(2000000);
+        usleep(1000000);
         printf("[mmap]:wr...\n");
         mapped_addr = (volatile uint32_t *)ucp4008_ctrl_mmap_base;
         *mapped_addr = 0xA5A55A5A;