Hosted targets Fix timer cycle calculation overflow

at 1 GHZ the intermediate calculation for cycles overflows 32 bits
this makes timer fail even with sensible values
solution divide both sides by 100

Change-Id: I18a4054c2d06fb72531d5496bba562f71b03984f

2 files changed, 5 insertions, 2 deletions

diff --git a/apps/plugins/lua/rocklib_events.c b/apps/plugins/lua/rocklib_events.c
index dc15c363a4..1c13a6758f 100644
--- a/apps/plugins/lua/rocklib_events.c
+++ b/apps/plugins/lua/rocklib_events.c
@@ -424,7 +424,10 @@ static void init_event_thread(bool init, struct event_data *ev_data)
                                            IF_COP(, COP));
 
     /* Timer is used to poll waiting events */
-    rb->timer_register(1, NULL, EV_TIMER_FREQ, rev_timer_isr IF_COP(, CPU));
+    if (!rb->timer_register(1, NULL, EV_TIMER_FREQ, rev_timer_isr IF_COP(, CPU)))
+    {
+        rb->splash(100, "No timer available!");
+    }
 }
 
 static void playback_event_callback(unsigned short id, void *data)
diff --git a/firmware/target/hosted/kernel-unix.c b/firmware/target/hosted/kernel-unix.c
index 1ce4dd8a10..5e9204effd 100644
--- a/firmware/target/hosted/kernel-unix.c
+++ b/firmware/target/hosted/kernel-unix.c
@@ -104,7 +104,7 @@ void tick_start(unsigned int interval_in_ms)
 }
 
 #define cycles_to_microseconds(cycles) \
-    ((int)((1000000*cycles)/TIMER_FREQ))
+    ((int)((10000*cycles)/(TIMER_FREQ / 100)))
 
 
 static timer_t timer_tid;