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https://github.com/eclipse-threadx/filex.git
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Transition FileX to Eclipse Fundation
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TiejunZhou
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/* This is a small demo of the high-performance FileX FAT file system. It includes setup for
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a small 34KB RAM disk and a loop that writes and reads a small file. */
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#include "fx_api.h"
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#ifdef FX_ENABLE_FAULT_TOLERANT
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#include "fx_fault_tolerant.h"
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#endif /* FX_ENABLE_FAULT_TOLERANT */
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#define DEMO_STACK_SIZE 2048
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/* Buffer for FileX FX_MEDIA sector cache. This must be large enough for at least one
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sector, which are typically 512 bytes in size. */
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unsigned char media_memory[512];
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#ifdef FX_ENABLE_FAULT_TOLERANT
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UCHAR fault_tolerant_memory[FX_FAULT_TOLERANT_MAXIMUM_LOG_FILE_SIZE];
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#endif /* FX_ENABLE_FAULT_TOLERANT */
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/* Define RAM device driver entry. */
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VOID _fx_ram_driver(FX_MEDIA *media_ptr);
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/* Define thread prototypes. */
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void thread_0_entry(ULONG thread_input);
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/* Define FileX global data structures. */
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FX_MEDIA ram_disk;
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FX_FILE my_file;
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#ifndef FX_STANDALONE_ENABLE
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CHAR *ram_disk_memory;
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#else
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unsigned char ram_disk_memory[256*512];
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#endif
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/* Define ThreadX global data structures. */
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#ifndef FX_STANDALONE_ENABLE
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TX_THREAD thread_0;
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#endif
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ULONG thread_0_counter;
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void main(void)
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{
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#ifdef FX_STANDALONE_ENABLE
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/* Initialize FileX. */
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fx_system_initialize();
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thread_0_entry(0);
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#else
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/* Enter the ThreadX kernel. */
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tx_kernel_enter();
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#endif
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}
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/* Define what the initial system looks like. */
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#ifndef FX_STANDALONE_ENABLE
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void tx_application_define(void *first_unused_memory)
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{
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CHAR *pointer;
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/* Put first available memory address into a character pointer. */
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pointer = (CHAR *) first_unused_memory;
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/* Put system definition stuff in here, e.g. thread creates and other assorted
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create information. */
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/* Create the main thread. */
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tx_thread_create(&thread_0, "thread 0", thread_0_entry, 0,
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pointer, DEMO_STACK_SIZE,
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1, 1, TX_NO_TIME_SLICE, TX_AUTO_START);
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pointer = pointer + DEMO_STACK_SIZE;
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/* Save the memory pointer for the RAM disk. */
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ram_disk_memory = pointer;
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/* Initialize FileX. */
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fx_system_initialize();
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}
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#endif
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void thread_0_entry(ULONG thread_input)
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{
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UINT status;
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ULONG actual;
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CHAR local_buffer[30];
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/* Format the RAM disk - the memory for the RAM disk was setup in
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tx_application_define above. */
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fx_media_format(&ram_disk,
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_fx_ram_driver, // Driver entry
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ram_disk_memory, // RAM disk memory pointer
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media_memory, // Media buffer pointer
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sizeof(media_memory), // Media buffer size
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"MY_RAM_DISK", // Volume Name
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1, // Number of FATs
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32, // Directory Entries
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0, // Hidden sectors
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256, // Total sectors
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512, // Sector size
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8, // Sectors per cluster
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1, // Heads
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1); // Sectors per track
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/* Loop to repeat the demo over and over! */
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do
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{
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/* Open the RAM disk. */
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status = fx_media_open(&ram_disk, "RAM DISK", _fx_ram_driver, ram_disk_memory, media_memory, sizeof(media_memory));
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/* Check the media open status. */
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if (status != FX_SUCCESS)
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{
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/* Error, break the loop! */
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break;
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}
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#ifdef FX_ENABLE_FAULT_TOLERANT
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status = fx_fault_tolerant_enable(&ram_disk, fault_tolerant_memory, sizeof(fault_tolerant_memory));
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if (status != FX_SUCCESS)
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{
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/* Fault tolerant enable error, break the loop. */
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break;
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}
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#endif /* FX_ENABLE_FAULT_TOLERANT */
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/* Create a file called TEST.TXT in the root directory. */
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status = fx_file_create(&ram_disk, "TEST.TXT");
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/* Check the create status. */
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if (status != FX_SUCCESS)
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{
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/* Check for an already created status. This is expected on the
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second pass of this loop! */
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if (status != FX_ALREADY_CREATED)
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{
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/* Create error, break the loop. */
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break;
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}
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}
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/* Open the test file. */
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status = fx_file_open(&ram_disk, &my_file, "TEST.TXT", FX_OPEN_FOR_WRITE);
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/* Check the file open status. */
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if (status != FX_SUCCESS)
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{
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/* Error opening file, break the loop. */
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break;
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}
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/* Seek to the beginning of the test file. */
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status = fx_file_seek(&my_file, 0);
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/* Check the file seek status. */
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if (status != FX_SUCCESS)
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{
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/* Error performing file seek, break the loop. */
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break;
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}
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/* Write a string to the test file. */
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status = fx_file_write(&my_file, " ABCDEFGHIJKLMNOPQRSTUVWXYZ\n", 28);
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/* Check the file write status. */
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if (status != FX_SUCCESS)
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{
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/* Error writing to a file, break the loop. */
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break;
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}
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/* Seek to the beginning of the test file. */
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status = fx_file_seek(&my_file, 0);
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/* Check the file seek status. */
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if (status != FX_SUCCESS)
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{
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/* Error performing file seek, break the loop. */
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break;
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}
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/* Read the first 28 bytes of the test file. */
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status = fx_file_read(&my_file, local_buffer, 28, &actual);
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/* Check the file read status. */
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if ((status != FX_SUCCESS) || (actual != 28))
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{
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/* Error reading file, break the loop. */
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break;
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}
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/* Close the test file. */
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status = fx_file_close(&my_file);
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/* Check the file close status. */
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if (status != FX_SUCCESS)
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{
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/* Error closing the file, break the loop. */
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break;
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}
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/* Close the media. */
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status = fx_media_close(&ram_disk);
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/* Check the media close status. */
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if (status != FX_SUCCESS)
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{
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/* Error closing the media, break the loop. */
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break;
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}
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/* Increment the thread counter, which represents the number
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of successful passes through this loop. */
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thread_0_counter++;
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} while (1);
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/* If we get here the FileX test failed! */
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return;
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}
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