From 820ef77d478f2071499f80b234e49e3cbf35fd5a Mon Sep 17 00:00:00 2001
From: Derisis13 <email.felhasznalasra@gmail.com>
Date: Mon, 10 Apr 2023 17:57:20 +0200
Subject: [PATCH] feat: nyan cat animation (art by @bence98)

---
 main.c | 59 ++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 45 insertions(+), 14 deletions(-)

diff --git a/main.c b/main.c
index 38e7dfe..434a147 100644
--- a/main.c
+++ b/main.c
@@ -24,22 +24,53 @@
 #include <util/delay.h>
 #include "PT6302.h"
 
-int main ()
-{
+int main() {
   static const uint8_t digitstates[] =
       {0b00, 0b00, 0b00, 0b00, 0b00, 0b00, 0b00, 0b00, 0b00, 0b00, 0b00, 0b00};
-  static const uint8_t custom_chars[8 * 5] = {0};
-  static const uint8_t characters[] =
+  static const uint8_t custom_chars[8 * 5] =
+      {
+          // rainbow 1 @ address 0x00
+          0b0010010, 0b0100100, 0b0010010, 0b0100100, 0b0010010,
+          // rainbow 2 @ address 0x01
+          0b0100100, 0b0010010, 0b0100100, 0b0010010, 0b0100100,
+          // tail 1 @ address 0x02
+          0b0000000, 0b0001100, 0b0010000, 0b0111100, 0b0100110,
+          // tail 2 @ address 0x03
+          0b0000000, 0b0000000, 0b0001000, 0b0000000, 0b0000000,
+          // body @ address 0x04
+          0b0100110, 0b0100100, 0b0100110, 0b0100100, 0b0100110,
+          // body @ address 0x05
+          0b0100110, 0b0100100, 0b0100110, 0b0100100, 0b0100110,
+          // head 1 @ address 0x06
+          0b0001100, 0b0110010, 0b0001010, 0b0110010, 0b0001100,
+          // head 2 @ address 0x07
+          0b0011000, 0b1100100, 0b0010100, 0b1100100, 0b0011000,
+      };
+  static const uint8_t ha5kfu[] =
       {0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x48, 0x41, 0x35, 0x4B, 0x46, 0x55, 0x20, 0x20, 0x20};
-  PT6302_startup ();
-  set_ports (1, 1);
-  set_digits (DISPLAY_DIGITS);
-  set_duty (7);
-  set_ADRAM (0, digitstates, DISPLAY_DIGITS);
-  set_CGRAM (0, custom_chars, 8);
-  set_DCRAM (0, characters, DISPLAY_DIGITS);
-  set_display_mode (NORMAL_MODE);
-  while (1)
-    {
+  static  const uint8_t blank[] =
+      {0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20};
+  static const uint8_t even_frame[] =
+      {0x07, 0x05, 0x03, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00};
+  static const uint8_t odd_frame[] =
+      {0x06, 0x04, 0x02, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01};
+  PT6302_startup();
+  set_ports(1, 1);
+  set_digits(DISPLAY_DIGITS);
+  set_duty(7);
+  set_ADRAM(0, digitstates, DISPLAY_DIGITS);
+  set_CGRAM(0, custom_chars, 8);
+  set_DCRAM(0, ha5kfu, DISPLAY_DIGITS);
+  set_display_mode(NORMAL_MODE);
+  _delay_ms(1000);
+  while (1) {
+    set_DCRAM(0, blank, DISPLAY_DIGITS);
+    for (int i = 0; i < DISPLAY_DIGITS; ++i) {
+      if (i % 2 == 0)
+        set_DCRAM(0, even_frame, i);
+      else
+        set_DCRAM(0, odd_frame, i);
+      _delay_ms(250);
     }
+  }
 }