/* | |
* FreeRTOS Kernel V10.0.1 | |
* Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy of | |
* this software and associated documentation files (the "Software"), to deal in | |
* the Software without restriction, including without limitation the rights to | |
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | |
* the Software, and to permit persons to whom the Software is furnished to do so, | |
* subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in all | |
* copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | |
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | |
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 1 tab == 4 spaces! | |
*/ | |
/******************************************************************************* | |
* See the URL in the comments within main.c for the location of the online | |
* documentation. | |
******************************************************************************/ | |
/* Standard includes. */ | |
#include <stdio.h> | |
/* FreeRTOS includes. */ | |
#include "FreeRTOS.h" | |
/* File system includes. */ | |
#include <redposix.h> | |
/* The number of bytes read/written to the example files at a time. */ | |
#define fsRAM_BUFFER_SIZE 200 | |
/* The volume prefix is an empty string, for convenience since there is only one | |
volume in this demo. | |
*/ | |
#define fsVOLUME_NAME "" | |
/*-----------------------------------------------------------*/ | |
/* | |
* Creates and verifies different files on the volume, demonstrating the use of | |
* various different API functions. | |
*/ | |
void vCreateAndVerifySampleFiles( void ); | |
/* | |
* Create a set of example files in the root directory of the volume using | |
* f_write(). | |
*/ | |
static void prvCreateDemoFiles( void ); | |
/* | |
* Use f_read() to read back and verify the files that were created by | |
* prvCreateDemoFiles(). | |
*/ | |
static void prvVerifyDemoFiles( void ); | |
/*-----------------------------------------------------------*/ | |
/* A buffer used to both create content to write to disk, and read content back | |
from a disk. Note there is no mutual exclusion on this buffer. */ | |
static char cRAMBuffer[ fsRAM_BUFFER_SIZE ]; | |
/* Names of directories that are created. */ | |
static const char *pcDirectory1 = "/SUB1", *pcDirectory2 = "/SUB1/SUB2"; | |
/*-----------------------------------------------------------*/ | |
void vCreateAndVerifySampleFiles( void ) | |
{ | |
int32_t lStatus; | |
/* First initialize the Reliance Edge driver. */ | |
lStatus = red_init(); | |
/* Format the volume. */ | |
if( lStatus == 0 ) | |
{ | |
lStatus = red_format( fsVOLUME_NAME ); | |
} | |
/* Mount the volume. */ | |
if( lStatus == 0 ) | |
{ | |
lStatus = red_mount( fsVOLUME_NAME ); | |
} | |
if( lStatus == 0 ) | |
{ | |
/* Create a set of files using red_write(). */ | |
prvCreateDemoFiles(); | |
/* Read back and verify the files that were created using red_write(). */ | |
prvVerifyDemoFiles(); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
static void prvCreateDemoFiles( void ) | |
{ | |
BaseType_t xFileNumber, xWriteNumber; | |
char cFilePath[ 64 ]; | |
const BaseType_t xMaxFiles = 5; | |
uint32_t ulEventMask; | |
int32_t lBytesWritten, lFildes, lStatus; | |
int iByte; | |
/* Save the current transaction point settings. */ | |
lStatus = red_gettransmask( fsVOLUME_NAME, &ulEventMask ); | |
configASSERT( lStatus == 0 ); | |
/* Disable automatic transaction points so that all of the files can be | |
created in one atomic operation. */ | |
lStatus = red_settransmask( fsVOLUME_NAME, RED_TRANSACT_MANUAL ); | |
configASSERT( lStatus == 0 ); | |
/* Create xMaxFiles files. Each created file will be | |
( xFileNumber * fsRAM_BUFFER_SIZE ) bytes in length, and filled | |
with a different repeating character. */ | |
for( xFileNumber = 1; xFileNumber <= xMaxFiles; xFileNumber++ ) | |
{ | |
/* Generate a file name. */ | |
sprintf( cFilePath, "/root%03d.txt", xFileNumber ); | |
/* Print out the file name and the directory into which the file is | |
being written. */ | |
printf( "Creating file %s\r\n", cFilePath ); | |
/* Open the file, creating the file if it does not already exist. */ | |
lFildes = red_open( cFilePath, RED_O_CREAT|RED_O_TRUNC|RED_O_WRONLY ); | |
configASSERT( lFildes != -1 ); | |
/* Fill the RAM buffer with data that will be written to the file. This | |
is just a repeating ascii character that indicates the file number. */ | |
memset( cRAMBuffer, ( int ) ( '0' + xFileNumber ), fsRAM_BUFFER_SIZE ); | |
/* Write the RAM buffer to the opened file a number of times. The | |
number of times the RAM buffer is written to the file depends on the | |
file number, so the length of each created file will be different. */ | |
for( xWriteNumber = 0; xWriteNumber < xFileNumber; xWriteNumber++ ) | |
{ | |
lBytesWritten = red_write( lFildes, cRAMBuffer, fsRAM_BUFFER_SIZE ); | |
configASSERT( lBytesWritten == fsRAM_BUFFER_SIZE ); | |
} | |
/* Close the file so another file can be created. */ | |
lStatus = red_close( lFildes ); | |
configASSERT( lStatus == 0 ); | |
} | |
/* Commit a transaction point, atomically adding the set of files to the | |
transacted state. */ | |
lStatus = red_transact( fsVOLUME_NAME ); | |
configASSERT( lStatus == 0 ); | |
/* Create a sub directory. */ | |
printf( "Creating directory %s\r\n", pcDirectory1 ); | |
lStatus = red_mkdir( pcDirectory1 ); | |
configASSERT( lStatus == 0 ); | |
/* Create a subdirectory in the new directory. */ | |
printf( "Creating directory %s\r\n", pcDirectory2 ); | |
lStatus = red_mkdir( pcDirectory2 ); | |
configASSERT( lStatus == 0 ); | |
/* Generate the file name. */ | |
sprintf( cFilePath, "%s/file.txt", pcDirectory2 ); | |
/* Print out the file name and the directory into which the file is being | |
written. */ | |
printf( "Writing file %s\r\n", cFilePath ); | |
lFildes = red_open( cFilePath, RED_O_CREAT|RED_O_TRUNC|RED_O_WRONLY ); | |
/* Write the file. It is filled with incrementing ascii characters starting | |
from '0'. */ | |
for( iByte = 0; iByte < fsRAM_BUFFER_SIZE; iByte++ ) | |
{ | |
cRAMBuffer[ iByte ] = ( char ) ( ( int ) '0' + iByte ); | |
} | |
lBytesWritten = red_write( lFildes, cRAMBuffer, fsRAM_BUFFER_SIZE ); | |
configASSERT( lBytesWritten == fsRAM_BUFFER_SIZE ); | |
/* Finished so close the file. */ | |
lStatus = red_close( lFildes ); | |
configASSERT( lStatus == 0 ); | |
/* Commit a transaction point, atomically adding the set of files and | |
directories to the transacted state. */ | |
lStatus = red_transact( fsVOLUME_NAME ); | |
configASSERT( lStatus == 0 ); | |
/* Restore previous transaction point settings. */ | |
lStatus = red_settransmask( fsVOLUME_NAME, ulEventMask ); | |
configASSERT( lStatus == 0 ); | |
} | |
/*-----------------------------------------------------------*/ | |
static void prvVerifyDemoFiles( void ) | |
{ | |
BaseType_t xFileNumber, xReadNumber; | |
char cFilePath[ 64 ]; | |
const BaseType_t xMaxFiles = 5; | |
long lChar; | |
int32_t lBytesRead, lFildes, lStatus; | |
int iByte; | |
/* Read back the files that were created by prvCreateDemoFiles(). */ | |
for( xFileNumber = 1; xFileNumber <= xMaxFiles; xFileNumber++ ) | |
{ | |
/* Generate the file name. */ | |
sprintf( cFilePath, "/root%03d.txt", xFileNumber ); | |
/* Print out the file name and the directory from which the file is | |
being read. */ | |
printf( "Reading file %s\r\n", cFilePath ); | |
/* Open the file for reading. */ | |
lFildes = red_open( cFilePath, RED_O_RDONLY ); | |
configASSERT( lFildes != -1 ); | |
/* Read the file into the RAM buffer, checking the file contents are as | |
expected. The size of the file depends on the file number. */ | |
for( xReadNumber = 0; xReadNumber < xFileNumber; xReadNumber++ ) | |
{ | |
/* Start with the RAM buffer clear. */ | |
memset( cRAMBuffer, 0x00, fsRAM_BUFFER_SIZE ); | |
lBytesRead = red_read( lFildes, cRAMBuffer, fsRAM_BUFFER_SIZE ); | |
configASSERT( lBytesRead == fsRAM_BUFFER_SIZE ); | |
/* Check the RAM buffer is filled with the expected data. Each | |
file contains a different repeating ascii character that indicates | |
the number of the file. */ | |
for( lChar = 0; lChar < fsRAM_BUFFER_SIZE; lChar++ ) | |
{ | |
configASSERT( cRAMBuffer[ lChar ] == ( '0' + ( char ) xFileNumber ) ); | |
} | |
} | |
/* Close the file. */ | |
lStatus = red_close( lFildes ); | |
configASSERT( lStatus == 0 ); | |
} | |
/* Generate the file name. */ | |
sprintf( cFilePath, "%s/file.txt", pcDirectory2 ); | |
/* Print out the file name and the directory from which the file is being | |
read. */ | |
printf( "Reading file %s\r\n", cFilePath ); | |
/* This time the file is opened for reading. */ | |
lFildes = red_open( cFilePath, RED_O_RDONLY ); | |
configASSERT( lFildes != -1 ); | |
/* Read the file. */ | |
lBytesRead = red_read( lFildes, cRAMBuffer, fsRAM_BUFFER_SIZE ); | |
configASSERT( lBytesRead == fsRAM_BUFFER_SIZE ); | |
/* Verify the file 1 byte at a time. */ | |
for( iByte = 0; iByte < fsRAM_BUFFER_SIZE; iByte++ ) | |
{ | |
configASSERT( cRAMBuffer[ iByte ] == ( char ) ( ( int ) '0' + iByte ) ); | |
} | |
/* Finished so close the file. */ | |
lStatus = red_close( lFildes ); | |
configASSERT( lStatus == 0 ); | |
} | |