1 files changed, 1 insertions, 1 deletions
diff --git a/app/msf.c b/app/msf.c
index 954e57f..9d8db3f 100644
--- a/app/msf.c
+++ b/app/msf.c
@@ -32,7 +32,7 @@ static EPOCH msf_time;
 
 void exti_t_isr (void)
 {
-  uint32_t now = SCS_DWT_CYCCNT;
+  uint32_t now = HW_CLOCK_REG;
   int v;
 
   v = !!gpio_get (T_PORT, T);