Define basic EEPROM data structures and functions

src/common.h

@@ -4,6 +4,7 @@
 #include "common/math.h"
 #include "common/types.h"
 #include "common/watchdog.h"
+#include "common/eeprom.h"
 
 #include <stddef.h>
 #include <stdarg.h>

src/common/eeprom.c

@@ -0,0 +1,17 @@
+#include "common.h"
+
+// TODO: Implement EEPROM storage with wear leveling
+
+int MEM_Read(mem_data_t *out)
+{
+	UNUSED(out);
+
+	return 0;
+}
+
+int MEM_Write(mem_data_t *in)
+{
+	UNUSED(in);
+
+	return 0;
+}

src/common/eeprom.h

@@ -0,0 +1,14 @@
+#ifndef MAD_CORE_COMMON_EEPROM_H
+#define MAD_CORE_COMMON_EEPROM_H
+
+typedef struct mem_data_s mem_data_t;
+
+struct mem_data_s {
+	byte sentinel;  // Data marker bit
+	word value[2];  // Values to be written
+};
+
+int  MEM_Read(mem_data_t *out);
+int  MEM_Write(mem_data_t *in);
+
+#endif // MAD_CORE_COMMON_EEPROM_H