first commit

state_manager.h

@@ -0,0 +1,24 @@
+#ifndef __STATE_MANAGER_H
+#define __STATE_MANAGER_H
+
+#include "simple_eeprom.h"
+
+#define DEFAULT_STATE 0x0000
+
+void save_state(uint16_t state) { eeprom_write(state); }
+
+uint16_t load_state(void) { return eeprom_read(); }
+
+void dump_eeprom(void) {
+  uint16_t *word = (uint16_t *)(EEPROM_BASE);
+  printf("EEPROM contents:");
+  for (int i = 0; i < 32; i++) {
+    uint16_t val = word[i];
+    // if (!(val & 0x8000)) {
+    printf(" %04X", val);
+    // }
+  }
+  printf("\n");
+}
+
+#endif