Add system for having multiple "patterns" and add a couple.

1 files changed, 26 insertions, 0 deletions

diff --git a/include/pattern.h b/include/pattern.h
new file mode 100644
index 0000000..f5d0a1b
--- /dev/null
+++ b/include/pattern.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "ws2812b.h"
+
+#define DEFINE_PATTERN        \
+  __attribute__((__section__( \
+      ".patterns"))) volatile static pattern_t __FILE__ = 
+
+typedef struct {
+  /* Name of the pattern. */
+  const char* name;
+
+  /* Return the rgb for the pixel at the given offset 'x' and time 't' */
+  rgb_t (*get_rgb)(uint32_t t, size_t x);
+
+  /* Resets the pattern to the beginning. */
+  void (*reset)(void);
+} pattern_t;
+
+extern pattern_t PATTERNS_START;
+extern pattern_t PATTERNS_END;
+
+#define patterns (&PATTERNS_START)
+#define n_patterns (&PATTERNS_END - &PATTERNS_START)