diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
| commit | c3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (patch) | |
| tree | added370d1e356901f8579f076e3263fb0464db7 /boards/dk-tm4c129x/enet_lwip/enet_fs.c | |
| parent | 990090a4cc9070837d31e66b58d40f0c3d038741 (diff) | |
Add more board models
Diffstat (limited to 'boards/dk-tm4c129x/enet_lwip/enet_fs.c')
| -rw-r--r-- | boards/dk-tm4c129x/enet_lwip/enet_fs.c | 338 |
1 files changed, 338 insertions, 0 deletions
diff --git a/boards/dk-tm4c129x/enet_lwip/enet_fs.c b/boards/dk-tm4c129x/enet_lwip/enet_fs.c new file mode 100644 index 0000000..4a38ee5 --- /dev/null +++ b/boards/dk-tm4c129x/enet_lwip/enet_fs.c @@ -0,0 +1,338 @@ +//*****************************************************************************
+//
+// enet_fs.c - File System Processing for lwIP Web Server Apps.
+//
+// Copyright (c) 2013-2014 Texas Instruments Incorporated. All rights reserved.
+// Software License Agreement
+//
+// Texas Instruments (TI) is supplying this software for use solely and
+// exclusively on TI's microcontroller products. The software is owned by
+// TI and/or its suppliers, and is protected under applicable copyright
+// laws. You may not combine this software with "viral" open-source
+// software in order to form a larger program.
+//
+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
+// DAMAGES, FOR ANY REASON WHATSOEVER.
+//
+// This is part of revision 2.1.0.12573 of the DK-TM4C129X Firmware Package.
+//
+//*****************************************************************************
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+#include "inc/hw_memmap.h"
+#include "driverlib/rom.h"
+#include "driverlib/ssi.h"
+#include "utils/lwiplib.h"
+#include "utils/ustdlib.h"
+#include "httpserver_raw/httpd.h"
+#include "httpserver_raw/fs.h"
+#include "httpserver_raw/fsdata.h"
+#include "fatfs/src/ff.h"
+#include "fatfs/src/diskio.h"
+
+//*****************************************************************************
+//
+// Include the file system data for this application. This file is generated
+// by the makefsfile utility, using the following command:
+//
+// ../../../../tools/bin/makefsfile -i fs -o enet_fsdata.h -r -h -q
+//
+// If any changes are made to the static content of the web pages served by the
+// application, this command must be used to regenerate enet_fsdata.h in order
+// for those changes to be picked up by the web server.
+//
+//*****************************************************************************
+#include "enet_fsdata.h"
+
+//*****************************************************************************
+//
+// The following are data structures used by FatFs.
+//
+//*****************************************************************************
+static FATFS g_sFatFs;
+
+//*****************************************************************************
+//
+// The number of milliseconds that has passed since the last disk_timerproc()
+// call.
+//
+//*****************************************************************************
+static uint32_t ui32TickCounter = 0;
+
+//*****************************************************************************
+//
+// Initialize the file system.
+//
+//*****************************************************************************
+void
+fs_init(void)
+{
+ //
+ // Initialize and mount the Fat File System.
+ //
+ f_mount(0, &g_sFatFs);
+}
+
+//*****************************************************************************
+//
+// File System tick handler.
+//
+//*****************************************************************************
+void
+fs_tick(uint32_t ui32TickMS)
+{
+ //
+ // Increment the tick counter.
+ //
+ ui32TickCounter += ui32TickMS;
+
+ //
+ // Check to see if the FAT FS tick needs to run.
+ //
+ if(ui32TickCounter >= 10)
+ {
+ ui32TickCounter = 0;
+ disk_timerproc();
+ }
+}
+
+//*****************************************************************************
+//
+// Open a file and return a handle to the file, if found. Otherwise,
+// return NULL.
+//
+//*****************************************************************************
+struct fs_file *
+fs_open(const char *pcName)
+{
+ const struct fsdata_file *psTree;
+ struct fs_file *psFile = NULL;
+ FIL *psFatFile = NULL;
+ FRESULT fresult = FR_OK;
+
+ //
+ // Allocate memory for the file system structure.
+ //
+ psFile = mem_malloc(sizeof(struct fs_file));
+ if(psFile == NULL)
+ {
+ return(NULL);
+ }
+
+ //
+ // See if a file on the SD card is being requested.
+ //
+ if(ustrncmp(pcName, "/sd/", 4) == 0)
+ {
+ //
+ // Allocate memory for the Fat File system handle.
+ //
+ psFatFile = mem_malloc(sizeof(FIL));
+ if(psFatFile == NULL)
+ {
+ mem_free(psFile);
+ return(NULL);
+ }
+
+ //
+ // Attempt to open the file on the Fat File System.
+ //
+ fresult = f_open(psFatFile, pcName + 3, FA_READ);
+ if(fresult == FR_OK)
+ {
+ psFile->data = NULL;
+ psFile->len = 0;
+ psFile->index = 0;
+ psFile->pextension = psFatFile;
+ return(psFile);
+ }
+
+ //
+ // If we get here, we failed to find the file on the Fat File System,
+ // so free up the Fat File system handle/object.
+ //
+ mem_free(psFatFile);
+ mem_free(psFile);
+ return(NULL);
+ }
+
+ //
+ // Initialize the file system tree pointer to the root of the linked list.
+ //
+ psTree = FS_ROOT;
+
+ //
+ // Begin processing the linked list, looking for the requested file name.
+ //
+ while(NULL != psTree)
+ {
+ //
+ // Compare the requested file "name" to the file name in the
+ // current node.
+ //
+ if(ustrncmp(pcName, (char *)psTree->name, psTree->len) == 0)
+ {
+ //
+ // Fill in the data pointer and length values from the
+ // linked list node.
+ //
+ psFile->data = (char *)psTree->data;
+ psFile->len = psTree->len;
+
+ //
+ // For now, we setup the read index to the end of the file,
+ // indicating that all data has been read.
+ //
+ psFile->index = psTree->len;
+
+ //
+ // We are not using any file system extensions in this
+ // application, so set the pointer to NULL.
+ //
+ psFile->pextension = NULL;
+
+ //
+ // Exit the loop and return the file system pointer.
+ //
+ break;
+ }
+
+ //
+ // If we get here, we did not find the file at this node of the linked
+ // list. Get the next element in the list.
+ //
+ psTree = psTree->next;
+ }
+
+ //
+ // If we didn't find the file, ptTee will be NULL. Make sure we
+ // return a NULL pointer if this happens.
+ //
+ if(psTree == NULL)
+ {
+ mem_free(psFile);
+ psFile = NULL;
+ }
+
+ //
+ // Return the file system pointer.
+ //
+ return(psFile);
+}
+
+//*****************************************************************************
+//
+// Close an opened file designated by the handle.
+//
+//*****************************************************************************
+void
+fs_close(struct fs_file *psFile)
+{
+ //
+ // If a Fat file was opened, free its object.
+ //
+ if(psFile->pextension)
+ {
+ mem_free(psFile->pextension);
+ }
+
+ //
+ // Free the main file system object.
+ //
+ mem_free(psFile);
+}
+
+//*****************************************************************************
+//
+// Read the next chunck of data from the file. Return the count of data
+// that was read. Return 0 if no data is currently available. Return
+// a -1 if at the end of file.
+//
+//*****************************************************************************
+int
+fs_read(struct fs_file *psFile, char *pcBuffer, int iCount)
+{
+ int iAvailable;
+ UINT uiBytesRead;
+ FRESULT fresult;
+
+ //
+ // Check to see if a Fat File was opened and process it.
+ //
+ if(psFile->pextension)
+ {
+ //
+ // Read the data.
+ //
+ fresult = f_read(psFile->pextension, pcBuffer, iCount, &uiBytesRead);
+ if((fresult != FR_OK) || (uiBytesRead == 0))
+ {
+ return(-1);
+ }
+ return((int)uiBytesRead);
+ }
+
+ //
+ // Check to see if more data is available.
+ //
+ if(psFile->index == psFile->len)
+ {
+ //
+ // There is no remaining data. Return a -1 for EOF indication.
+ //
+ return(-1);
+ }
+
+ //
+ // Determine how much data we can copy. The minimum of the 'iCount'
+ // parameter or the available data in the file system buffer.
+ //
+ iAvailable = psFile->len - psFile->index;
+ if(iAvailable > iCount)
+ {
+ iAvailable = iCount;
+ }
+
+ //
+ // Copy the data.
+ //
+ memcpy(pcBuffer, psFile->data + iAvailable, iAvailable);
+ psFile->index += iAvailable;
+
+ //
+ // Return the count of data that we copied.
+ //
+ return(iAvailable);
+}
+
+//*****************************************************************************
+//
+// Determine the number of bytes left to read from the file.
+//
+//*****************************************************************************
+int
+fs_bytes_left(struct fs_file *psFile)
+{
+ //
+ // Check to see if a Fat File was opened and process it.
+ //
+ if(psFile->pextension)
+ {
+ //
+ // Return the number of bytes left to be read from the Fat File.
+ //
+ return(f_size((FIL *)psFile->pextension) -
+ f_tell((FIL *)psFile->pextension));
+ }
+
+ //
+ // Return the number of bytes left to be read from this file.
+ //
+ return(psFile->len - psFile->index);
+}
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