kind of works for writing flash. IMPORTANT ISSUE - the memory usage output given by the linker for program size used DOES NOT equal the actual flash space used when programming. INVESTIGATE: did I set a memory space that doesn't lie on a page boundary? or do I just need to increase the flash space allocated to the bootloader

common_src/memory.h

@@ -0,0 +1,37 @@
+/*************************************************************************
+ * Copyright (C) 2019 by Justin Byers
+ * 
+ * This file is part of clubdance_v2.
+ *
+ * clubdance_v2 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.
+ *
+ * clubdance_v2 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 clubdance_v2.  If not, see <https://www.gnu.org/licenses/>.
+ *************************************************************************/
+
+/**
+ * @file memory.
+ * @author Justin Byers
+ * @date August 11, 2019
+ * @brief 
+ *
+ */
+#ifndef MEMORY_
+#define	MEMORY_
+
+#define APP_FW_MEMORY_OFFSET 0x2000
+
+#define BOOTLOADER_ENTRYPOINT 0x001C
+
+#define APP_FW_VERSION_ADDRESS (APP_FW_MEMORY_OFFSET + 0x0016)
+
+#endif	/* MEMORY_ */
+