132 lines
4.1 KiB
C
132 lines
4.1 KiB
C
/*
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* Example of using FatFs
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*
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* Part of esp-open-rtos
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* Copyright (C) 2016 Ruslan V. Uss <unclerus@gmail.com>
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* BSD Licensed as described in the file LICENSE
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*/
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#include <esp/uart.h>
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#include <espressif/esp_common.h>
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#include <stdio.h>
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#include <fatfs/ff.h>
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#define CS_GPIO_PIN 2
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#define TEST_FILENAME "/test_loooong_filename.txt"
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#define TEST_CONTENTS "Hello! It's FatFs on esp8266 with ESP Open RTOS!"
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#define READBUF_SIZE 256
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#define DELAY_MS 3000
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static const char contents[] = TEST_CONTENTS;
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static const char *results[] = {
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[FR_OK] = "Succeeded",
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[FR_DISK_ERR] = "A hard error occurred in the low level disk I/O layer",
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[FR_INT_ERR] = "Assertion failed",
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[FR_NOT_READY] = "The physical drive cannot work",
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[FR_NO_FILE] = "Could not find the file",
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[FR_NO_PATH] = "Could not find the path",
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[FR_INVALID_NAME] = "The path name format is invalid",
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[FR_DENIED] = "Access denied due to prohibited access or directory full",
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[FR_EXIST] = "Access denied due to prohibited access",
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[FR_INVALID_OBJECT] = "The file/directory object is invalid",
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[FR_WRITE_PROTECTED] = "The physical drive is write protected",
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[FR_INVALID_DRIVE] = "The logical drive number is invalid",
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[FR_NOT_ENABLED] = "The volume has no work area",
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[FR_NO_FILESYSTEM] = "There is no valid FAT volume",
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[FR_MKFS_ABORTED] = "The f_mkfs() aborted due to any problem",
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[FR_TIMEOUT] = "Could not get a grant to access the volume within defined period",
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[FR_LOCKED] = "The operation is rejected according to the file sharing policy",
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[FR_NOT_ENOUGH_CORE] = "LFN working buffer could not be allocated",
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[FR_TOO_MANY_OPEN_FILES] = "Number of open files > _FS_LOCK",
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[FR_INVALID_PARAMETER] = "Given parameter is invalid"
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};
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static char readbuf[READBUF_SIZE];
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static bool failed(FRESULT res)
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{
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bool fail = res != FR_OK;
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if (fail)
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printf("\n Error: ");
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printf("\n %s\n", results[res]);
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return fail;
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}
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void check_fatfs()
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{
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const char *vol = f_gpio_to_volume(CS_GPIO_PIN);
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printf("\nCreating test file\n----------------------------\n");
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FATFS fs;
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// Mount filesystem
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printf("f_mount(&fs, \"%s\")", vol);
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if (failed(f_mount(&fs, vol, 1)))
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return;
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// Set default drive
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printf("f_chdrive(\"%s\")", vol);
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if (failed(f_chdrive(vol)))
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return;
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FIL f;
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// Create test file
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printf("f_open(&f, \"%s\", FA_WRITE | FA_CREATE_ALWAYS)", TEST_FILENAME);
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if (failed(f_open(&f, TEST_FILENAME, FA_WRITE | FA_CREATE_ALWAYS)))
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return;
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size_t written;
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// Write test string
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printf("f_write(&f, \"%s\")", contents);
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if (failed(f_write(&f, contents, sizeof(contents) - 1, &written)))
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return;
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printf(" Bytes written: %d\n", written);
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// Close file
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printf("f_close(&f)");
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if (failed(f_close(&f)))
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return;
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printf("\nReading test file\n----------------------------\n");
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// Open test file
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printf("f_open(&f, \"%s\", FA_READ)", TEST_FILENAME);
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if (failed(f_open(&f, TEST_FILENAME, FA_READ)))
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return;
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printf(" File size: %u\n", (uint32_t)f_size(&f));
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size_t readed;
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// Read file
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printf("f_read(&f, ...)");
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if (failed(f_read(&f, readbuf, sizeof(readbuf) - 1, &readed)))
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return;
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readbuf[readed] = 0;
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printf(" Readed %u bytes, test file contents: %s\n", readed, readbuf);
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// Close file
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printf("f_close(&f)");
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if (failed(f_close(&f)))
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return;
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// Unmount
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printf("f_mount(NULL, \"%s\")", vol);
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if (failed(f_mount(NULL, vol, 0)))
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return;
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}
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void user_init(void)
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{
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uart_set_baud(0, 115200);
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printf("SDK version:%s\n\n", sdk_system_get_sdk_version());
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while (true)
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{
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printf("***********************************\nTesting FAT filesystem\n***********************************\n");
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check_fatfs();
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printf("\n\n");
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for (size_t i = 0; i < DELAY_MS; i ++)
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sdk_os_delay_us(1000);
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}
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}
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