e200: Make sure backlight will never get stuck off for long periods from the wheel.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14210 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 3 insertions, 2 deletions

diff --git a/firmware/target/arm/sandisk/sansa-e200/button-e200.c b/firmware/target/arm/sandisk/sansa-e200/button-e200.c
index 734416bf28..bb90a15096 100644
--- a/firmware/target/arm/sandisk/sansa-e200/button-e200.c
+++ b/firmware/target/arm/sandisk/sansa-e200/button-e200.c
@@ -188,11 +188,12 @@ void clickwheel_int(void)
                 wheel_delta = 1;
             }
 
-            if (TIME_AFTER(usec, next_backlight_on))
+            if (TIME_AFTER(current_tick, next_backlight_on) ||
+                v <= 0xffffff/(1000000/4))
             {
                 /* poke backlight to turn it on or maintain it no more often
                    than every 1/4 second*/
-                next_backlight_on = usec + 1000000/4;
+                next_backlight_on = current_tick + 1000000/4;
                 backlight_on();
                 button_backlight_on();
             }