From 084123b752c74f7b8a6da23cb9bce0ac4efa3715 Mon Sep 17 00:00:00 2001
From: "joaquim.org" <joaquim.org@gmail.com>
Date: Sun, 11 Jul 2021 14:06:06 +0100
Subject: Using littlefs (#438)

* add submodule littlefs
* base fs
* Save settings using littlefs
* Small fixes and suggestions from PR
* More small fixes from PR suggestions
* Code clean up
* Change SpiNorFlash functions to be private in FS
---
 src/components/fs/FS.h | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 src/components/fs/FS.h

(limited to 'src/components/fs/FS.h')

diff --git a/src/components/fs/FS.h b/src/components/fs/FS.h
new file mode 100644
index 00000000..1f2eb7e0
--- /dev/null
+++ b/src/components/fs/FS.h
@@ -0,0 +1,71 @@
+#pragma once
+
+#include <cstdint>
+#include "drivers/SpiNorFlash.h"
+#include <littlefs/lfs.h>
+
+namespace Pinetime {
+  namespace Controllers {
+    class FS {
+    public:
+      FS(Pinetime::Drivers::SpiNorFlash&);
+
+      void Init();
+      void LVGLFileSystemInit();
+
+      int FileOpen(lfs_file_t* file_p, const char* fileName, const int flags);
+      int FileClose(lfs_file_t* file_p);
+      int FileRead(lfs_file_t* file_p, uint8_t* buff, uint32_t size);
+      int FileWrite(lfs_file_t* file_p, const uint8_t* buff, uint32_t size);
+      int FileSeek(lfs_file_t* file_p, uint32_t pos);
+
+      int FileDelete(const char* fileName);
+
+      int DirCreate(const char* path);
+      int DirDelete(const char* path);
+
+      void VerifyResource();
+
+    private:
+
+      Pinetime::Drivers::SpiNorFlash& flashDriver;
+
+      /*
+      * External Flash MAP (4 MBytes)
+      *
+      * 0x000000 +---------------------------------------+
+      *          |  Bootloader Assets                    |
+      *          |  256 KBytes                           |
+      *          |                                       |
+      * 0x040000 +---------------------------------------+
+      *          |  OTA                                  |
+      *          |  464 KBytes                           |
+      *          |                                       |
+      *          |                                       |
+      *          |                                       |
+      * 0x0B4000 +---------------------------------------+
+      *          |  File System                          |
+      *          |                                       |
+      *          |                                       |
+      *          |                                       |
+      *          |                                       |
+      * 0x400000 +---------------------------------------+
+      *
+      */
+      static constexpr size_t startAddress = 0x0B4000;
+      static constexpr size_t size = 0x3C0000;
+      static constexpr size_t blockSize = 4096;
+
+      bool resourcesValid = false;
+      const struct lfs_config lfsConfig;
+
+      lfs_t lfs;
+
+      static int SectorSync(const struct lfs_config* c);
+      static int SectorErase(const struct lfs_config* c, lfs_block_t block);
+      static int SectorProg(const struct lfs_config* c, lfs_block_t block, lfs_off_t off, const void* buffer, lfs_size_t size);
+      static int SectorRead(const struct lfs_config* c, lfs_block_t block, lfs_off_t off, void* buffer, lfs_size_t size);
+
+    };
+  }
+}
-- 
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