flashlight mode

- hold up button when powering on

Arduboy.cpp

@@ -27,6 +27,12 @@ void Arduboy::begin()
 {
   boot(); // required
 
+  // flashlight
+  if(pressed(UP_BUTTON)) {
+    sendLCDCommand(OLED_ALL_PIXELS_ON); // smaller than allPixelsOn()
+    while(true) {}
+  }
+
   // Audio
   tunes.initChannel(PIN_SPEAKER_1);
   tunes.initChannel(PIN_SPEAKER_2);

core.cpp

@@ -250,29 +250,20 @@ void ArduboyCore::sendLCDCommand(uint8_t command)
   LCDDataMode();
 }
 
-#define OLED_PIXELS_INVERTED 0xA7 // All pixels inverted
-#define OLED_PIXELS_NORMAL 0xA6 // All pixels normal
-
 // invert the display or set to normal
 // when inverted, a pixel set to 0 will be on
 void ArduboyCore::invert(boolean inverse)
 {
   sendLCDCommand(inverse ? OLED_PIXELS_INVERTED : OLED_PIXELS_NORMAL);
 }
 
-#define OLED_ALL_PIXELS_ON 0xA5 // all pixels on
-#define OLED_PIXELS_FROM_RAM 0xA4 // pixels mapped to display RAM contents
-
 // turn all display pixels on, ignoring buffer contents
 // or set to normal buffer display
 void ArduboyCore::allPixelsOn(boolean on)
 {
   sendLCDCommand(on ? OLED_ALL_PIXELS_ON : OLED_PIXELS_FROM_RAM);
 }
 
-#define OLED_VERTICAL_FLIPPED 0xC0 // reversed COM scan direction
-#define OLED_VERTICAL_NORMAL 0xC8 // normal COM scan direction
-
 // flip the display vertically or set to normal
 void ArduboyCore::flipVertical(boolean flipped)
 {

core.h

@@ -98,6 +98,19 @@
 
 #endif
 
+// OLED hardware (SSD1306)
+
+#define OLED_PIXELS_INVERTED 0xA7 // All pixels inverted
+#define OLED_PIXELS_NORMAL 0xA6 // All pixels normal
+
+#define OLED_ALL_PIXELS_ON 0xA5 // all pixels on
+#define OLED_PIXELS_FROM_RAM 0xA4 // pixels mapped to display RAM contents
+
+#define OLED_VERTICAL_FLIPPED 0xC0 // reversed COM scan direction
+#define OLED_VERTICAL_NORMAL 0xC8 // normal COM scan direction
+
+// -----
+
 #define COLUMN_ADDRESS_END (WIDTH - 1) & 0x7F   // 128 pixels wide
 #define PAGE_ADDRESS_END ((HEIGHT/8)-1) & 0x07  // 8 pages high