Merge pull request #1042 from jaeheonshim-forks/inky-blocking-fix

Fix: Properly implement non-blocking update functions for the Inky Frame

Author: Gadgetoid

drivers/inky73/inky73.cpp

@@ -181,8 +181,7 @@ namespace pimoroni {
     busy_wait();
 
     command(DRF, {0}); // start display refresh
-    busy_wait();
-
+    
     if(blocking) {
       busy_wait();
 

libraries/inky_frame/inky_frame.cpp

@@ -66,11 +66,11 @@ namespace pimoroni {
   }
 
   void InkyFrame::update(bool blocking) {
-    while(is_busy()) {
+    while(blocking && is_busy()) {
       tight_loop_contents();
     }
     uc8159.update((PicoGraphics_PenP4 *)this);
-    while(is_busy()) {
+    while(blocking && is_busy()) {
       tight_loop_contents();
     }
     uc8159.power_off();

libraries/inky_frame_7/inky_frame_7.cpp

@@ -65,11 +65,11 @@ namespace pimoroni {
   }
 
   void InkyFrame::update(bool blocking) {
-    while(is_busy()) {
+    while(blocking && is_busy()) {
       tight_loop_contents();
     }
     inky73.update((PicoGraphics_PenInky7 *)this);
-    while(is_busy()) {
+    while(blocking && is_busy()) {
       tight_loop_contents();
     }
     inky73.power_off();