> On May 22, 2015, at 12:24 PM, KSilva <kaleb.si...@iatecam.org.br> wrote:
>
> Hello, I am trying write in file in the USB device, I am using the protocol
> EFI_SIMPLE_FILE_SYSTEM_PROTOCOL with EFI_FILE_PROTOCOL,The file is create
> and opened,but I don't get to write, in the file shows only first letter.
>
I did not see an issue in your code.
%s is Unicode not ASCII, since ASCII is %a, so I assume your file is Unicode.
A is 0x0041 in EFI 16-bit Unicode so in bytes that is 0x41 0x00. If you read a
Unicode string as ASCII you get a NULL in the wrong place of the string. So
maybe the issue is in the way you are looking at the file you wrote?
Thanks,
Andrew Fish
> Someone help me?
>
>
>
> Status = gBS->LocateHandleBuffer(ByProtocol,
> &gSimpleFileProtocol,
> NULL,
> &numFile,
> &fileHandle);
> if(!EFI_ERROR(Status))
> {
> for(index = 0;index < numFile;index++)
> {
> Status = gBS->HandleProtocol(fileHandle[index],
> &gSimpleFileProtocol,
> (VOID **)&fileSystemProtocol);
> if(!EFI_ERROR(Status))
> {
> Status = fileSystemProtocol->OpenVolume(fileSystemProtocol,
> &root);
> if(!EFI_ERROR(Status))
> {
> Print(L"\nTexto: %s",texto);
> Status = root->Open(root,
> &newHandle,
> L"teste.txt",
> EFI_FILE_MODE_CREATE | EFI_FILE_MODE_READ
> | EFI_FILE_MODE_WRITE,
> 0);
> if(!EFI_ERROR(Status))
> {
> BufferSize = 128;
> Print(L"Status root->Open(): %r\n", Status);
> Status = root->Write(newHandle,
> &BufferSize,
> texto);
> }
> Print(L"\nStatus do Write: %r\n",Status);
> root->Close(newHandle);
> Print(L"\nstatus Close :%r\n",Status);
> break;
> }
> }
> }
> }
>
>
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