PicoGraphics: Power off added for UC8151.

drivers/uc8151/uc8151.hpp

@@ -157,10 +157,10 @@ namespace pimoroni {
   public:
     void busy_wait();
     void reset();
-    void power_off();
   
     // DisplayDriver API
     bool is_busy() override;
+    void power_off() override;
     void update(PicoGraphics *graphics) override;
     void partial_update(PicoGraphics *graphics, Rect region) override;
     bool set_update_speed(int update_speed) override;

libraries/pico_graphics/pico_graphics.hpp

@@ -432,6 +432,7 @@ namespace pimoroni {
       virtual bool set_update_speed(int update_speed) {return false;};
       virtual void set_backlight(uint8_t brightness) {};
       virtual bool is_busy() {return false;};
+      virtual void power_off() {};
       virtual void cleanup() {};
   };
 

micropython/modules/picographics/picographics.cpp

@@ -454,6 +454,8 @@ mp_obj_t ModPicoGraphics_update(mp_obj_t self_in) {
     #endif
     }
 
+    self->display->power_off();
+
     return mp_const_none;
 }