/// <summary>
/// Functionality provided by mainboard to ummount storage devices, given the volume name of the storage device (see <see cref="GetStorageDeviceVolumeNames"/>).
/// This should result in a <see cref="Microsoft.SPOT.IO.RemovableMedia.Eject"/> event if successful.
/// </summary>
public override bool UnmountStorageDevice(string volumeName)
{
_storage.UnmountFileSystem();
_storage.Dispose();
return(true);
}
/// <summary>
/// Functionality provided by mainboard to ummount storage devices, given the volume name of the storage device (see <see cref="GetStorageDeviceVolumeNames"/>).
/// This should result in a Microsoft.SPOT.IO.RemovableMedia.Eject event if successful.
/// </summary>
public override bool UnmountStorageDevice(string volumeName)
{
// implement this if you support storage devices. This should result in a <see cref="Microsoft.SPOT.IO.RemovableMedia.Eject"/> event if successful and return true if the volumeName is supported.
_storage.UnmountFileSystem();
_storage.Dispose();
return(true);// volumeName == "SD";
}
public void Dispose()
{
if (storageType == FileBrowser.StorageType.SD && storage != null)
{
storage.Dispose();
storage = null;
}
}
private static void SDMountThread()
{
const int POLL_TIME = 500; // check every 500 millisecond
bool sdExists;
while (true)
{
try // If SD card was removed while mounting, it may throw exceptions
{
sdExists = sdDetectPin.Read() == false;
// make sure it is fully inserted and stable
if (sdExists)
{
Thread.Sleep(50);
sdExists = sdDetectPin.Read() == false;
}
if (sdExists && storage == null)
{
SetupStorage();
}
else if (!sdExists && storage != null)
{
Trace.CloseTrace();
storage.UnmountFileSystem();
storage.Dispose();
storage = null;
}
}
catch
{
if (storage != null)
{
storage.Dispose();
storage = null;
}
}
Thread.Sleep(POLL_TIME);
}
}
void USBHostController_DeviceDisconnectedEvent(USBH_Device device)
{
if (device.TYPE == USBH_DeviceType.MassStorage && _usbStorages.Contains(device.ID))
{
PersistentStorage usbStorage = (PersistentStorage)_usbStorages[device.ID];
usbStorage.UnmountFileSystem();
usbStorage.Dispose();
_usbStorages.Remove(device.ID);
}
}
private static void SDWatcher()
{
const int POLL_TIME = 500; // check every 500 millisecond
bool exists;
while (true)
{
try // If SD card was removed while mounting, it may throw exceptions
{
exists = PersistentStorage.DetectSDCard();
// make sure it is fully inserted and stable
if (exists)
{
Thread.Sleep(50);
exists = PersistentStorage.DetectSDCard();
}
if (exists && sdCard == null)
{
sdCard = new PersistentStorage("SD");
sdCard.MountFileSystem();
}
else if (!exists && sdCard != null)
{
sdCard.UnmountFileSystem();
sdCard.Dispose();
sdCard = null;
}
}
catch
{
if (sdCard != null)
{
sdCard.Dispose();
sdCard = null;
}
}
Thread.Sleep(POLL_TIME);
}
}
private void ReleaseCardStorage()
{
lock (this)
{
if (_cardStorage != null)
{
_cardStorage.UnmountFileSystem();
_cardStorage.Dispose();
_cardStorage = null;
}
}
}
/// <summary>
/// This method is called when a device is pulled out of the USB host.
/// </summary>
/// <param name="device">The device pulled out.</param>
private static void DeviceDisconnected(USBH_Device device)
{
ps.UnmountFileSystem();
ps.Dispose();
ps = null;
}
public static bool MountSD()
{
lastErrorMsg = "";
bool returnValue = false;
if (PersistentStorage.DetectSDCard() == false)
{
lastErrorMsg = "SD Card not present.";
}
else
{
try
{
ps = new PersistentStorage("SD");
ps.MountFileSystem();
isMounted = true;
returnValue = true;
}
catch (Exception e)
{
if (ps != null)
{
ps.Dispose();
ps = null;
}
lastErrorMsg = e.Message;
}
}
return returnValue;
}