direcetory listings maybe?

Added LISTDIR command and notify responses.

src/components/ble/FSService.cpp

@@ -1,5 +1,6 @@
 #include <nrf_log.h>
 #include "FSService.h"
+#include "components/ble/BleController.h"
 
 using namespace Pinetime::Controllers;
 
@@ -24,7 +25,7 @@ FSService::FSService(Pinetime::Controllers::FS& fs)
                                 .access_cb = FSServiceCallback,
                                 .arg = this,
                                 .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY,
-                                .val_handle = nullptr,
+                                .val_handle = &transferCharacteristicHandle,
                               },
                               {0}},
     serviceDefinition {
@@ -51,5 +52,71 @@ int FSService::OnFSServiceRequested(uint16_t connectionHandle, uint16_t attribut
     int res = os_mbuf_append(context->om, &fsVersion, sizeof(fsVersion));
     return (res == 0) ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
   }
+  if (attributeHandle == transferCharacteristicHandle) {
+    return FSCommandHandler(connectionHandle, context->om);
+  }
+  return 0;
+}
+
+int FSService::FSCommandHandler(uint16_t connectionHandle, os_mbuf* om) {
+  auto command = static_cast<commands>(om->om_data[0]);
+  NRF_LOG_INFO("[FS_S] -> FSCommandHandler");
+
+  switch (command) {
+    case commands::LISTDIR: {
+      NRF_LOG_INFO("[FS_S] -> ListDir");
+      ListDirHeader *header = (ListDirHeader *)&om->om_data[0];
+      uint16_t plen = header->pathlen;
+      char path[plen+1] = {0};
+      memcpy(path, header->pathstr, plen);
+      NRF_LOG_INFO("[FS_S] -> DIR %.10s", path);
+      lfs_dir_t dir;
+      struct lfs_info info;
+
+      ListDirResponse resp;
+      resp.command = 0x51; // LISTDIR_ENTRY;
+      resp.status = 1;     // TODO actually use res above!
+      resp.totalentries = 0;
+      resp.entry = 0;
+      int res = fs.DirOpen(path, &dir);
+      while (fs.DirRead(&dir, &info)) {
+        resp.totalentries++;
+      }
+      NRF_LOG_INFO("[FS_S] -> %d ", resp.totalentries);
+      fs.DirClose(&dir);
+      fs.DirOpen(path, &dir);
+      while (fs.DirRead(&dir, &info)) {
+        switch(info.type){
+          case LFS_TYPE_REG:
+          {
+            resp.flags = 0;
+            resp.file_size = info.size;
+            break;
+          } 
+          case LFS_TYPE_DIR:
+          {
+             resp.flags = 1; 
+             resp.file_size = 0;
+             break;
+          }
+        }
+        resp.modification_time = 0; // TODO Does LFS actually support TS?
+        strcpy(resp.path,info.name);
+        resp.path_length = strlen(info.name);
+        NRF_LOG_INFO("[FS_S] ->Path %s ,", info.name);
+        auto* om = ble_hs_mbuf_from_flat(&resp,sizeof(ListDirResponse));
+        ble_gattc_notify_custom(connectionHandle,transferCharacteristicHandle,om);
+        resp.entry++;
+      }
+      resp.entry++;
+      resp.file_size = 0;
+      resp.path_length = 0;
+      resp.flags = 0;
+      //Todo this better
+      auto* om = ble_hs_mbuf_from_flat(&resp,sizeof(ListDirResponse)-70+resp.path_length);
+      ble_gattc_notify_custom(connectionHandle,transferCharacteristicHandle,om);
+      NRF_LOG_INFO("[FS_S] -> done ");
+    }
+  }
   return 0;
 }

src/components/ble/FSService.h

@@ -4,6 +4,7 @@
 #include <host/ble_gap.h>
 #undef max
 #undef min
+
 #include "components/fs/FS.h"
 
 namespace Pinetime {
@@ -42,8 +43,26 @@ namespace Pinetime {
       struct ble_gatt_chr_def characteristicDefinition[3];
       struct ble_gatt_svc_def serviceDefinition[2];
       uint16_t versionCharacteristicHandle;
+      uint16_t transferCharacteristicHandle;
+      typedef struct __attribute__((packed)) {
+        uint8_t command;
+        uint8_t padding;
+        uint16_t pathlen;
+        char pathstr[70];
+      } ListDirHeader;
+      typedef struct __attribute__((packed)) {
+        uint8_t command;
+        uint8_t status;
+        uint16_t path_length;
+        uint32_t entry;
+        uint32_t totalentries;
+        uint32_t flags;
+        uint32_t modification_time;
+        uint32_t file_size;
+        char path[70];
+      } ListDirResponse;
 
-      enum class commands {
+      enum class commands : uint8_t {
         INVALID = 0x00,
         READ = 0x10,
         READ_DATA = 0x11,
@@ -58,8 +77,10 @@ namespace Pinetime {
         LISTDIR = 0x50,
         LISTDIR_ENTRY = 0x51,
         MOVE = 0x60,
-        MOVE_STATUS = 0x61,
-      }
+        MOVE_STATUS = 0x61
+      };
+
+      int FSCommandHandler(uint16_t connectionHandle, os_mbuf* om);
     };
   }
 }

src/components/fs/FS.cpp

@@ -5,9 +5,9 @@
 
 using namespace Pinetime::Controllers;
 
-FS::FS(Pinetime::Drivers::SpiNorFlash& driver) :
-  flashDriver{ driver },
-  lfsConfig{
+FS::FS(Pinetime::Drivers::SpiNorFlash& driver)
+  : flashDriver {driver},
+    lfsConfig {
       .context = this,
       .read = SectorRead,
       .prog = SectorProg,
@@ -25,9 +25,8 @@ FS::FS(Pinetime::Drivers::SpiNorFlash& driver) :
 
       .name_max = 50,
       .attr_max = 50,
-  }
-{ }
-
+    } {
+}
 
 void FS::Init() {
 
@@ -48,7 +47,6 @@ void FS::Init() {
   VerifyResource();
   LVGLFileSystemInit();
 #endif
-
 }
 
 void FS::VerifyResource() {
@@ -80,6 +78,17 @@ int FS::FileDelete(const char* fileName) {
   return lfs_remove(&lfs, fileName);
 }
 
+int FS::DirOpen(const char* path, lfs_dir_t* lfs_dir) {
+  return lfs_dir_open(&lfs, lfs_dir, path);
+}
+
+int FS::DirClose(lfs_dir_t* lfs_dir) {
+  return lfs_dir_close(&lfs, lfs_dir);
+}
+
+int FS::DirRead(lfs_dir_t* dir, lfs_info* info) {
+  return lfs_dir_read(&lfs, dir, info);
+}
 
 int FS::DirCreate(const char* path) {
   return lfs_mkdir(&lfs, path);
@@ -148,8 +157,7 @@ namespace {
 
     if (file->type == 0) {
       return LV_FS_RES_FS_ERR;
-    }
-    else {
+    } else {
       return LV_FS_RES_OK;
     }
   }
@@ -193,5 +201,4 @@ void FS::LVGLFileSystemInit() {
   fs_drv.user_data = this;
 
   lv_fs_drv_register(&fs_drv);
-
 }

src/components/fs/FS.h

@@ -21,6 +21,9 @@ namespace Pinetime {
 
       int FileDelete(const char* fileName);
 
+      int DirOpen(const char* path, lfs_dir_t* lfs_dir);
+      int DirClose(lfs_dir_t* lfs_dir);
+      int DirRead(lfs_dir_t* dir, lfs_info* info);
       int DirCreate(const char* path);
       int DirDelete(const char* path);