From 3183889c1f9f41d8cca3b5eee2f1bf00f07b9217 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Mon, 29 Feb 2016 16:13:22 +0100
Subject: Add "currently flashing EEPROM" animation

---
 src/system.cc | 43 +++++++++++++++++++++++++++++++++++++++----
 src/system.h  | 22 ++++++++++++++++++++++
 2 files changed, 61 insertions(+), 4 deletions(-)

diff --git a/src/system.cc b/src/system.cc
index 9867c17..3b6ee3c 100644
--- a/src/system.cc
+++ b/src/system.cc
@@ -143,6 +143,7 @@ void System::receive(void)
 			if (rx_byte == BYTE_START) {
 				rxExpect = PATTERN1;
 				storage.reset();
+				dispFlashing();
 			} else {
 				rxExpect = NEXT_BLOCK;
 			}
@@ -261,11 +262,8 @@ void System::loop()
 	display.update();
 }
 
-void System::shutdown()
+void System::dispPowerdown()
 {
-	modem.disable();
-
-	// show power down image
 	disp_buf[0] = systemPowerdownImage[0];
 	disp_buf[1] = systemPowerdownImage[1];
 	disp_buf[2] = systemPowerdownImage[2];
@@ -278,6 +276,43 @@ void System::shutdown()
 	active_anim.type = AnimationType::FRAMES;
 	active_anim.length = 8;
 	display.show(&active_anim);
+}
+
+void System::dispFlashing()
+{
+	// manually unrolled loop to make sure systemFlashImage doesn't end up
+	// in memory
+	disp_buf[0] = systemFlashImage[0];
+	disp_buf[1] = systemFlashImage[1];
+	disp_buf[2] = systemFlashImage[2];
+	disp_buf[3] = systemFlashImage[3];
+	disp_buf[4] = systemFlashImage[4];
+	disp_buf[5] = systemFlashImage[5];
+	disp_buf[6] = systemFlashImage[6];
+	disp_buf[7] = systemFlashImage[7];
+	disp_buf[8] = systemFlashImage[8];
+	disp_buf[9] = systemFlashImage[9];
+	disp_buf[10] = systemFlashImage[10];
+	disp_buf[11] = systemFlashImage[11];
+	disp_buf[12] = systemFlashImage[12];
+	disp_buf[13] = systemFlashImage[13];
+	disp_buf[14] = systemFlashImage[14];
+	disp_buf[15] = systemFlashImage[15];
+
+	active_anim.data = disp_buf;
+	active_anim.type = AnimationType::FRAMES;
+	active_anim.length = 16;
+	active_anim.delay = 0;
+	active_anim.speed = 96;
+	display.show(&active_anim);
+}
+
+void System::shutdown()
+{
+	modem.disable();
+
+	// show power down image
+	dispPowerdown();
 	display.update(); // we left the main loop, so we need to call this manually
 
 	// wait until both buttons are released
diff --git a/src/system.h b/src/system.h
index 36e8e37..8960b77 100644
--- a/src/system.h
+++ b/src/system.h
@@ -14,6 +14,26 @@ const uint8_t systemPowerdownImage[] = {
 	0x00
 };
 
+// TODO dito?
+const uint8_t systemFlashImage[] = {
+	0x00,
+	0x00,
+	0x00,
+	0x00,
+	0x00,
+	0x00,
+	0x00,
+	0x00,
+	0x00,
+	0x00,
+	0x07,
+	0x33,
+	0x55,
+	0x98,
+	0x00,
+	0x00
+};
+
 /**
  * Contains the system idle loop. Checks for button presses, handles
  * standby/resume, reads data from the Modem and updates the Display.
@@ -25,6 +45,8 @@ class System {
 		void shutdown(void);
 		void receive(void);
 		void loadPattern(uint8_t anim_no);
+		void dispPowerdown();
+		void dispFlashing();
 
 		enum TransmissionControl : uint8_t {
 			BYTE_END = 0x84,
-- 
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