OLED display update interval support (#10388)

* add OLED_UPDATE_INTERVAL_MS support * update docs/feature_oled_driver.md * Update docs/feature_oled_driver.md Co-authored-by: Joel Challis <[email protected]> * Update drivers/oled/oled_driver.c * Update drivers/oled/oled_driver.c Co-authored-by: Joel Challis <[email protected]>
qmk · Oct 19, 2020 · 2d468c4 · 2d468c4
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diff --git a/docs/feature_oled_driver.md b/docs/feature_oled_driver.md
@@ -149,6 +149,7 @@ void oled_task_user(void) {
 |`OLED_SCROLL_TIMEOUT_RIGHT`|*Not defined*    |Scroll timeout direction is right when defined, left when undefined.                                                      |
 |`OLED_IC`                  |`OLED_IC_SSD1306`|Set to `OLED_IC_SH1106` if you're using the SH1106 OLED controller.                                                       |
 |`OLED_COLUMN_OFFSET`       |`0`              |(SH1106 only.) Shift output to the right this many pixels.<br />Useful for 128x64 displays centered on a 132x64 SH1106 IC.|
+|`OLED_UPDATE_INTERVAL`  |`0`              |Set the time interval for updating the OLED display in ms. This will improve the matrix scan rate.                        |
 
  ## 128x64 & Custom sized OLED Displays
 

diff --git a/drivers/oled/oled_driver.c b/drivers/oled/oled_driver.c
@@ -118,6 +118,9 @@ uint32_t oled_timeout;
 #if OLED_SCROLL_TIMEOUT > 0
 uint32_t oled_scroll_timeout;
 #endif
+#if OLED_UPDATE_INTERVAL > 0
+uint16_t oled_update_timeout;
+#endif
 
 // Internal variables to reduce math instructions
 
@@ -635,6 +638,13 @@ void oled_task(void) {
         return;
     }
 
+#if OLED_UPDATE_INTERVAL > 0
+    if (timer_elapsed(oled_update_timeout) < OLED_UPDATE_INTERVAL) {
+        return;
+    }
+    oled_update_timeout = timer_read();
+#endif
+
     oled_set_cursor(0, 0);
 
     oled_task_user();