Use buttons.pressed for firmware

firmware/flash-loader/flash-loader.cpp

diff --git a/firmware/flash-loader/flash-loader.cpp b/firmware/flash-loader/flash-loader.cpp
index 01803af..95813b7 100644
--- a/firmware/flash-loader/flash-loader.cpp
+++ b/firmware/flash-loader/flash-loader.cpp
@@ -260,21 +260,18 @@
 void FlashLoader::RenderFlashFile(uint32_t time)
 {
 	static uint32_t lastRepeat = 0;
-	static uint32_t lastButtons = 0;
 
 	if(!m_bFsInit)
 		FSInit();
 
-	uint32_t changedButtons = buttons ^ lastButtons;
+	bool button_a = buttons.pressed & Button::A;
+	bool button_x = buttons.pressed & Button::X;
+	bool button_y = buttons.pressed & Button::Y;
 
-	bool button_a = buttons & changedButtons & Button::A;
-	bool button_x = buttons & changedButtons & Button::X;
-	bool button_y = buttons & changedButtons & Button::Y;
+	bool button_up = buttons.pressed & Button::DPAD_UP;
+	bool button_down = buttons.pressed & Button::DPAD_DOWN;
 
-	bool button_up = buttons & changedButtons & Button::DPAD_UP;
-	bool button_down = buttons & changedButtons & Button::DPAD_DOWN;
-
-	bool button_home = buttons & changedButtons & Button::HOME;
+	bool button_home = buttons.pressed & Button::HOME;
 
 	if(time - lastRepeat > 150 || button_up || button_down) {
 		button_up = buttons & Button::DPAD_UP;
@@ -282,8 +279,6 @@
 		lastRepeat = time;
 	}
 
-	lastButtons = buttons;
-
 	screen.pen = Pen(0,0,0);
 	screen.rectangle(Rect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT));
 	screen.pen = Pen(255, 255, 255);