Added eeprom load/save API (no wear levelling yet), verified it works in DarkHorse.

1 files changed, 58 insertions, 0 deletions

diff --git a/spaghetti-monster/fsm-eeprom.h b/spaghetti-monster/fsm-eeprom.h
new file mode 100644
index 0000000..3d34f23
--- /dev/null
+++ b/spaghetti-monster/fsm-eeprom.h
@@ -0,0 +1,58 @@
+/*
+ * fsm-eeprom.h: EEPROM API for SpaghettiMonster.
+ *
+ * Copyright (C) 2017 Selene ToyKeeper
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef FSM_EEPROM_H
+#define FSM_EEPROM_H
+
+#include <avr/eeprom.h>
+
+// set this higher to enable normal eeprom functions
+#ifndef EEPROM_BYTES
+#define EEPROM_BYTES 0
+#endif
+
+// set this higher to enable wear-levelled eeprom functions
+#ifndef EEPROM_WL_BYTES
+#define EEPROM_WL_BYTES 0
+#endif
+
+#if EEPROM_BYTES > 0
+uint8_t eeprom[EEPROM_BYTES];
+uint8_t load_eeprom();  // returns 1 for success, 0 for no data found
+void save_eeprom();
+#define EEP_START (EEPSIZE/2)
+#endif
+
+#if EEPROM_WL_BYTES > 0
+uint8_t eeprom_wl[EEPROM_WL_BYTES];
+uint8_t load_wl_eeprom();  // returns 1 for success, 0 for no data found
+void save_wl_eeprom();
+#define EEP_WL_SIZE (EEPSIZE/2)
+#endif
+
+#if EEPSIZE > 256
+#define EEP_OFFSET_T uint16_t
+#else
+#define EEP_OFFSET_T uint8_t
+#endif
+
+// if this marker isn't found, the eeprom is assumed to be blank
+#define EEP_MARKER 0b10100101
+
+#endif