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

drivers/oled/oled_driver.c

@@ -114,8 +114,11 @@ bool             oled_active = false;
 bool             oled_scrolling = false;
 uint8_t          oled_rotation = 0;
 uint8_t          oled_rotation_width = 0;
-#if !defined(OLED_DISABLE_TIMEOUT)
-  uint16_t         oled_last_activity;
+#if OLED_TIMEOUT > 0
+  uint32_t         oled_timeout;
+#endif
+#if OLED_SCROLL_TIMEOUT > 0
+  uint32_t         oled_scroll_timeout;
 #endif
 
 // Internal variables to reduce math instructions
@@ -209,6 +212,13 @@ bool oled_init(uint8_t rotation) {
     return false;
   }
 
+#if OLED_TIMEOUT > 0
+  oled_timeout = timer_read32() + OLED_TIMEOUT;
+#endif
+#if OLED_SCROLL_TIMEOUT > 0
+  oled_scroll_timeout = timer_read32() + OLED_SCROLL_TIMEOUT;
+#endif
+
   oled_clear();
   oled_initialized = true;
   oled_active = true;
@@ -454,8 +464,8 @@ void oled_write_ln_P(const char *data, bool invert) {
 #endif // defined(__AVR__)
 
 bool oled_on(void) {
-#if !defined(OLED_DISABLE_TIMEOUT)
-  oled_last_activity = timer_read();
+#if OLED_TIMEOUT > 0
+  oled_timeout = timer_read32() + OLED_TIMEOUT;
 #endif
 
   static const uint8_t PROGMEM display_on[] = { I2C_CMD, DISPLAY_ON };
@@ -519,6 +529,7 @@ bool oled_scroll_off(void) {
       return oled_scrolling;
     }
     oled_scrolling = false;
+    oled_dirty = -1;
   }
   return !oled_scrolling;
 }
@@ -546,15 +557,32 @@ void oled_task(void) {
 
   oled_task_user();
 
+#if OLED_SCROLL_TIMEOUT > 0
+  if (oled_dirty && oled_scrolling) {
+    oled_scroll_timeout = timer_read32() + OLED_SCROLL_TIMEOUT;
+    oled_scroll_off();
+  }
+#endif
+
   // Smart render system, no need to check for dirty
   oled_render();
 
   // Display timeout check
-#if !defined(OLED_DISABLE_TIMEOUT)
-  if (oled_active && timer_elapsed(oled_last_activity) > OLED_TIMEOUT) {
+#if OLED_TIMEOUT > 0
+  if (oled_active && timer_expired32(timer_read32(), oled_timeout)) {
     oled_off();
   }
 #endif
+
+#if OLED_SCROLL_TIMEOUT > 0
+  if (!oled_scrolling && timer_expired32(timer_read32(), oled_scroll_timeout)) {
+#ifdef OLED_SCROLL_TIMEOUT_RIGHT
+    oled_scroll_right();
+#else
+    oled_scroll_left();
+#endif
+  }
+#endif
 }
 
 __attribute__((weak))

drivers/oled/oled_driver.h

@@ -138,10 +138,21 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
   #define OLED_FONT_HEIGHT 8
 #endif
 
-#define OLED_ROTATION_0 0x00
-#define OLED_ROTATION_90 0x01
-#define OLED_ROTATION_180 0x02
-#define OLED_ROTATION_270 0x03
+#if !defined(OLED_TIMEOUT)
+  #if defined(OLED_DISABLE_TIMEOUT)
+    #define OLED_TIMEOUT 0
+  #else
+    #define OLED_TIMEOUT 60000
+  #endif
+#endif
+
+// OLED Rotation enum values are flags
+typedef enum {
+    OLED_ROTATION_0   = 0,
+    OLED_ROTATION_90  = 1,
+    OLED_ROTATION_180 = 2,
+    OLED_ROTATION_270 = 3, // OLED_ROTATION_90 | OLED_ROTATION_180
+} oled_rotation_t;
 
 // Initialize the oled display, rotating the rendered output based on the define passed in.
 // Returns true if the OLED was initialized successfully

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

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();
 }