initial WIP

lots of code copied over, things filled in to hopefully get the LED matrix lighting up. untested.

firmware/app/misc/i8atan2.h

@@ -0,0 +1,21 @@
+/*
+ * i8atan2.h
+ * begin 20190611 true
+ *
+ * copied and fixed up from teh internets
+ */
+
+#ifndef INC_I8ATAN2_H_
+#define INC_I8ATAN2_H_
+
+
+
+#include <stdint.h>
+
+
+
+int8_t i8atan2(int8_t y, int8_t x);
+
+
+
+#endif /* INC_I8ATAN2_H_ */