Added OLED Display autoscroll during periods of OLED data inactivity (#6546)

* Added OLED Display autoscroll during periods of OLED data inactivity.

* Fixing compile errors

* Feedback from review

2 files changed, 14 insertions, 4 deletions

diff --git a/tmk_core/common/timer.h b/tmk_core/common/timer.h
index fe23f87ae..a8dd85663 100644
--- a/tmk_core/common/timer.h
+++ b/tmk_core/common/timer.h
@@ -19,6 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define TIMER_H 1
 
 #include <stdint.h>
+#include <stdbool.h>
 
 #if defined(__AVR__)
 #include "avr/timer_avr.h"
@@ -46,6 +47,16 @@ uint32_t timer_read32(void);
 uint16_t timer_elapsed(uint16_t last);
 uint32_t timer_elapsed32(uint32_t last);
 
+// Utility functions to check if a future time has expired & autmatically handle time wrapping if checked / reset frequently (half of max value)
+inline bool timer_expired(uint16_t current, uint16_t last)
+{
+    return current - last < 0x8000;
+}
+
+inline bool timer_expired32(uint32_t current, uint32_t future) {
+    return current - future < 0x80000000;
+}
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/tmk_core/protocol/usb_hid/override_wiring.c b/tmk_core/protocol/usb_hid/override_wiring.c
index 1e9a94ce2..52f03c300 100644
--- a/tmk_core/protocol/usb_hid/override_wiring.c
+++ b/tmk_core/protocol/usb_hid/override_wiring.c
@@ -4,14 +4,13 @@
 #define __DELAY_BACKWARD_COMPATIBLE__
 #include <util/delay.h>
 #include "common/timer.h"
-#include "Arduino.h"
 
 
-unsigned long millis()
+unsigned long millis(void)
 {
     return timer_read32();
 }
-unsigned long micros()
+unsigned long micros(void)
 {
     return timer_read32() * 1000UL;
 }
@@ -23,7 +22,7 @@ void delayMicroseconds(unsigned int us)
 {
     _delay_us(us);
 }
-void init()
+void init(void)
 {
     timer_init();
 }