gd32: Add a GD32Flash storage driver

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

plugins/Kaleidoscope-Hardware-GD32-Eval/src/kaleidoscope/device/gd32/Eval.h

@@ -22,12 +22,17 @@
 #include <Arduino.h>
 
 #include "kaleidoscope/device/Base.h"
+#include "kaleidoscope/driver/storage/GD32Flash.h"
 
 namespace kaleidoscope {
 namespace device {
 namespace gd32 {
 
-struct EvalProps : kaleidoscope::device::BaseProps {
+struct EvalStorageProps: kaleidoscope::driver::storage::GD32FlashProps {};
+
+struct EvalProps: kaleidoscope::device::BaseProps {
+  typedef EvalStorageProps StorageProps;
+  typedef kaleidoscope::driver::storage::GD32Flash<StorageProps> Storage;
   static constexpr const char *short_name = "GD32Eval";
 };
 

src/kaleidoscope/driver/storage/GD32Flash.h

@@ -0,0 +1,47 @@
+/* -*- mode: c++ -*-
+ * kaleidoscope::driver::storage::GD32Flash -- Storage driver with GD32 flash backend
+ * Copyright (C) 2021  Keyboard.io, Inc
+ *
+ * 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, version 3.
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#if defined(ARDUINO_ARCH_GD32) || defined(KALEIDOSCOPE_VIRTUAL_BUILD)
+
+#include "kaleidoscope/driver/storage/Base.h"
+#include "FlashStorage.h"
+#include "FlashAsEEPROM.h"
+
+namespace kaleidoscope {
+namespace driver {
+namespace storage {
+
+struct GD32FlashProps : kaleidoscope::driver::storage::BaseProps {
+  static constexpr uint16_t length = 10240;
+};
+
+template <typename _StorageProps>
+class GD32Flash: public EEPROMClass<_StorageProps::length> {
+ public:
+  void setup() {
+    EEPROMClass<_StorageProps::length>::begin();
+  }
+  void commit() {}
+};
+
+} // namespace storage
+} // namespace driver
+} // namespace kaleidoscope
+
+#endif