/*Function:
SYS_FS_HANDLE SYS_FS_FileOpen_Wrapper(const char *fname,
SYS_FS_FILE_OPEN_ATTRIBUTES attributes);
***************************************************************************/
SYS_FS_HANDLE SYS_FS_FileOpen_Wrapper(const char *fname,
SYS_FS_FILE_OPEN_ATTRIBUTES attributes)
{
char localSitePath[SYS_FS_MAX_PATH + 1];
const char *fnameBuf = SYS_FS_FileNameFormat(fname, localSitePath, sizeof(localSitePath));
return (fnameBuf == 0) ? SYS_FS_HANDLE_INVALID : SYS_FS_FileOpen(fnameBuf, attributes);
}
/*Function:
SYS_FS_HANDLE SYS_FS_FileOpen_Wrapper(const char *fname,
SYS_FS_FILE_OPEN_ATTRIBUTES attributes);
***************************************************************************/
SYS_FS_HANDLE SYS_FS_FileOpen_Wrapper(const char *fname,
SYS_FS_FILE_OPEN_ATTRIBUTES attributes)
{
uint32_t compareResult, strCopyLoop;
SYS_FS_HANDLE fileOpenResult;
uint8_t localSitePath[WEBSITE_PATH_LENGTH+12];
uint8_t fnameString[WEBSITE_PATH_LENGTH];
const char *fnameBuf;
for (strCopyLoop=0; strCopyLoop <WEBSITE_PATH_LENGTH; strCopyLoop++)
fnameString[strCopyLoop] = 0;
for (strCopyLoop=0; strCopyLoop <WEBSITE_PATH_LENGTH+12; strCopyLoop++)
localSitePath[strCopyLoop] = 0;
fnameBuf = fname;
/* Copy fname into a string */
for (strCopyLoop=0; strCopyLoop <WEBSITE_PATH_LENGTH; fnameBuf++, strCopyLoop++)
fnameString[strCopyLoop] = *fnameBuf;
/* Copy the local website path to to a string*/
strncpy((char*)localSitePath,(const char*)LOCAL_WEBSITE_PATH, strlen((const char*)LOCAL_WEBSITE_PATH));
/* Check web path name to see if it already contains local website name*/
compareResult = strncmp((const char *)fnameString,(const char *)localSitePath,strlen((char *)localSitePath));
/* If it does*/
if (compareResult == 0)
{
/* Pass the fname directly to the FileOpen function*/
fileOpenResult = SYS_FS_FileOpen(fname, attributes);
}
/* If not*/
else
{
/*Append local path to web path*/
strncat((char*)localSitePath,(const char*)fname,WEBSITE_PATH_LENGTH+12);
fileOpenResult = SYS_FS_FileOpen((const char *)localSitePath, attributes);
}
return fileOpenResult;
}
void APP_Tasks ( void )
{
/* The application task state machine */
switch(appData.state)
{
case APP_MOUNT_DISK:
if(SYS_FS_Mount("/dev/nvma1", "/mnt/myDrive", FAT, 0, NULL) != 0)
{
/* The disk could not be mounted. Try
* mounting again untill success. */
appData.state = APP_MOUNT_DISK;
}
else
{
/* Mount was successful. Open a file.
* Let the switch case fall through. */
appData.state = APP_OPEN_FILE;
}
break;
case APP_OPEN_FILE:
appData.fileHandle = SYS_FS_FileOpen("/mnt/myDrive/FILE.TXT", SYS_FS_FILE_OPEN_READ_PLUS);
if(appData.fileHandle == SYS_FS_HANDLE_INVALID)
{
/* Could not open the file. Error out*/
appData.state = APP_ERROR;
}
else
{
/* Check the file status */
appData.state = APP_READ_FILE_STAT;
}
break;
case APP_READ_FILE_STAT:
if( SYS_FS_FileStat("/mnt/myDrive/FILE.TXT", &appData.fileStatus ) == SYS_FS_RES_FAILURE )
{
/* Reading file status was a failure */
appData.state = APP_ERROR;
}
else
{
/* Read file size */
appData.state = APP_READ_FILE_SIZE;
}
break;
case APP_READ_FILE_SIZE:
appData.fileSize = SYS_FS_FileSize( appData.fileHandle );
if(appData.fileSize == -1)
{
/* Reading file size was a failure */
appData.state = APP_ERROR;
}
else
{
if(appData.fileSize == appData.fileStatus.fsize)
{
appData.state = APP_DO_FILE_SEEK;
}
else
appData.state = APP_ERROR;
}
break;
case APP_DO_FILE_SEEK:
if(SYS_FS_FileSeek( appData.fileHandle, 4, SYS_FS_SEEK_SET ) == -1)
{
/* File seek caused an error */
appData.state = APP_ERROR;
}
else
{
/* Check for End of file */
appData.state = APP_CHECK_EOF;
}
break;
case APP_CHECK_EOF:
if(SYS_FS_FileEOF( appData.fileHandle ) == false )
{
/* Either, EOF is not reached or there was an error
In any case, for the application, its an error condition */
appData.state = APP_ERROR;
}
else
{
appData.state = APP_DO_ANOTHER_FILE_SEEK;
}
break;
case APP_DO_ANOTHER_FILE_SEEK:
/* Move file pointer to begining of file */
if(SYS_FS_FileSeek( appData.fileHandle, (-1 * appData.fileSize), SYS_FS_SEEK_END ) == -1)
{
/* File seek caused an error */
appData.state = APP_ERROR;
}
else
{
/* Check for original file content */
appData.state = APP_READ_ORIGINAL_FILE_CONTENT;
}
break;
case APP_READ_ORIGINAL_FILE_CONTENT:
if(SYS_FS_FileRead((void *)appData.data, 4, appData.fileHandle) == -1)
{
/* There was an error while reading the file.
* Close the file and error out. */
SYS_FS_FileClose(appData.fileHandle);
appData.state = APP_ERROR;
}
else
{
if(memcmp(appData.data, originalData, 4) != 0)
{
/* The written and the read data dont
* match. */
appData.state = APP_ERROR;
}
else
{
/* The test was successful. Lets do a file seek to move to begin of file . */
appData.state = APP_FINAL_FILE_SEEK;
}
break;
}
case APP_FINAL_FILE_SEEK:
/* Move file pointer to begining of file */
if(SYS_FS_FileSeek( appData.fileHandle, (-1 * appData.fileSize), SYS_FS_SEEK_END ) == -1)
{
/* File seek caused an error */
appData.state = APP_ERROR;
}
else
{
/* Do a file write now */
appData.state = APP_WRITE_TO_FILE;
}
break;
case APP_WRITE_TO_FILE:
if(SYS_FS_FileWrite((const void *)writeData, 13, appData.fileHandle) == -1)
{
/* Write was not successful. Close the file
* and error out.*/
SYS_FS_FileClose(appData.fileHandle);
appData.state = APP_ERROR;
}
else
{
/* Write was successful. Close the file and
* open again for read. */
SYS_FS_FileClose(appData.fileHandle);
appData.state = APP_OPEN_FOR_READ;
}
break;
case APP_OPEN_FOR_READ:
appData.fileHandle = SYS_FS_FileOpen("/mnt/myDrive/FILE.TXT", SYS_FS_FILE_OPEN_READ);
if(appData.fileHandle == SYS_FS_HANDLE_INVALID)
{
/* Could not open the file. Error out*/
appData.state = APP_ERROR;
}
else
{
/* Try wrting to the file. Let the
* switch case fall through. */
appData.state = APP_READ_VERIFY_FILE;
}
break;
case APP_READ_VERIFY_FILE:
if(SYS_FS_FileRead((void *)appData.data, 13, appData.fileHandle) == -1)
{
/* There was an error while reading the file.
* Close the file and error out. */
SYS_FS_FileClose(appData.fileHandle);
appData.state = APP_ERROR;
}
else
{
if(strcmp((const char *)appData.data, (const char *)writeData) != 0)
{
/* The written and the read data dont
* match. */
appData.state = APP_ERROR;
}
else
{
/* The test was successful. Lets idle. */
appData.state = APP_IDLE;
}
SYS_FS_FileClose(appData.fileHandle);
break;
}
case APP_IDLE:
/* The appliction comes here when the demo
* has completed successfully. Switch on
* green LED. */
BSP_SwitchONSuccessLED();
break;
case APP_ERROR:
/* The appliction comes here when the demo
* has failed. Switch on the red LED.*/
BSP_SwitchONFailureLED();
break;
default:
break;
}
} //End of APP_Tasks
void APP_Tasks ( void )
{
/* The application task state machine */
switch(appData.state)
{
case APP_MOUNT_DISK:
if(SYS_FS_Mount("/dev/nvma1", "/mnt/myDrive", MPFS2, 0, NULL) != 0)
{
/* The disk could not be mounted. Try
* mounting again untill success. */
appData.state = APP_MOUNT_DISK;
}
else
{
/* Mount was successful. opens
* the first file */
appData.state = APP_OPEN_FILE_1;
}
break;
case APP_OPEN_FILE_1:
appData.fileHandle_1 = SYS_FS_FileOpen("/mnt/myDrive/FILE.TXT", SYS_FS_FILE_OPEN_READ);
if(appData.fileHandle_1 == SYS_FS_HANDLE_INVALID)
{
/* Could not open the file. Error out*/
appData.state = APP_ERROR;
}
else
{
/* If first file was opened successfully, open the second file */
appData.state = APP_OPEN_FILE_2;
}
break;
case APP_OPEN_FILE_2:
appData.fileHandle_2 = SYS_FS_FileOpen("/mnt/myDrive/TEST.txt", SYS_FS_FILE_OPEN_READ);
if(appData.fileHandle_2 == SYS_FS_HANDLE_INVALID)
{
/* Could not open the file. Error out*/
appData.state = APP_ERROR;
}
else
{
/* If first file was opened successfully, check status of 3rd file */
appData.state = APP_CHECK_FILE_3_STAT;
}
break;
case APP_CHECK_FILE_3_STAT:
if(SYS_FS_FileStat("/mnt/myDrive/ABC.txt", &appData.fileStatus) == SYS_FS_RES_FAILURE)
{
/* Could not read the file staus. Error out*/
appData.state = APP_ERROR;
}
else
{
/* While creating the MPFS disk image, the file ABC.txt was chose to be of the following size */
if(appData.fileStatus.fsize != 31744)
{
/* reading file status had been wrong somewhere */
appData.state = APP_ERROR;
}
else
{
/* If status read was success, then do a file size check */
appData.state = APP_DO_FILE_SIZE_CHECK;
}
}
break;
case APP_DO_FILE_SIZE_CHECK:
if(SYS_FS_FileSize(appData.fileHandle_1) != 11)
{
/* File size check went wrong somewhere */
appData.state = APP_ERROR;
}
else
{
/* If status read was success, then do a file seek */
appData.state = APP_DO_FILE_SEEK;
}
/* We are done with this file, hence close it */
SYS_FS_FileClose(appData.fileHandle_1);
break;
case APP_DO_FILE_SEEK:
if(SYS_FS_FileSeek(appData.fileHandle_2, -10, SYS_FS_SEEK_END) != -10)
{
/* File seek went wrong somewhere */
appData.state = APP_ERROR;
}
else
{
/* Compare the remaining file content with a known string */
appData.state = APP_READ_VERIFY_CONTENT;
}
break;
case APP_READ_VERIFY_CONTENT:
if(SYS_FS_FileRead((void *)appData.data, 10, appData.fileHandle_2) == -1)
{
/* There was an error while reading the file.
* Close the file and error out. */
SYS_FS_FileClose(appData.fileHandle_2);
appData.state = APP_ERROR;
break;
}
else
{
if(strncmp((const char *)appData.data, (const char *)compareString, 10) != 0)
{
/* The written and the read data dont
* match. */
appData.state = APP_ERROR;
}
else
{
/* The test was successful. Lets idle. */
appData.state = APP_CHECK_EOF;
}
break;
}
case APP_CHECK_EOF:
/* By now, we should have reached end of file */
if(SYS_FS_FileEOF(appData.fileHandle_2) != true)
{
/* Error */
appData.state = APP_ERROR;
}
else
{
/* We have completed all tests. Hence go to idle state */
appData.state = APP_IDLE;
}
case APP_IDLE:
/* The appliction comes here when the demo
* has completed successfully. Switch on
* green LED. */
SYS_FS_FileClose(appData.fileHandle_2);
BSP_SwitchONSuccessLED();
break;
case APP_ERROR:
/* The appliction comes here when the demo
* has failed. Switch on the red LED.*/
BSP_SwitchONFailureLED();
break;
default:
break;
}
} //End of APP_Tasks