X-Git-Url: https://git.friedersdorff.com/?a=blobdiff_plain;ds=sidebyside;f=common%2Ftimer.h;h=d24d3eab626f300d70204cc48229991ea9fc1c04;hb=c5060ea81942b0e3f8577536ff78402a19abe3d3;hp=f9e8181e6f5b22b3b3ec3920f3a3d30b137f1767;hpb=62d1ebb91c7b381ce3d88aad9ee0b03bea9fce26;p=max%2Ftmk_keyboard.git
diff --git a/common/timer.h b/common/timer.h
index f9e8181e..d24d3eab 100644
--- a/common/timer.h
+++ b/common/timer.h
@@ -23,10 +23,12 @@ along with this program. If not, see .
#ifndef TIMER_PRESCALER
# if F_CPU > 16000000
# define TIMER_PRESCALER 256
-# elif F_CPU >= 4000000
+# elif F_CPU > 2000000
# define TIMER_PRESCALER 64
-# else
+# elif F_CPU > 250000
# define TIMER_PRESCALER 8
+# else
+# define TIMER_PRESCALER 1
# endif
#endif
#define TIMER_RAW_FREQ (F_CPU/TIMER_PRESCALER)
@@ -42,6 +44,9 @@ along with this program. If not, see .
#define TIMER_DIFF_MS(a, b) TIMER_DIFF(a, b, UINT16_MAX)
+#ifdef __cplusplus
+extern "C" {
+#endif
extern volatile uint16_t timer_count;
@@ -49,5 +54,8 @@ void timer_init(void);
void timer_clear(void);
uint16_t timer_read(void);
uint16_t timer_elapsed(uint16_t last);
+#ifdef __cplusplus
+}
+#endif
#endif