101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/*----------------------------------------------------------------------*/
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/* FatFs sample project for generic microcontrollers (C)ChaN, 2012 */
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/*----------------------------------------------------------------------*/
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#include <stdio.h>
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#include "ff.h"
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FATFS Fatfs; /* File system object */
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FIL Fil; /* File object */
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uint8_t Buff[128]; /* File read buffer */
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void die ( /* Stop with dying message */
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FRESULT rc /* FatFs return value */
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)
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{
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xprintf("Failed with rc=%u.\n", rc);
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for (;;) ;
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}
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/*-----------------------------------------------------------------------*/
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/* Program Main */
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/*-----------------------------------------------------------------------*/
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int main (void)
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{
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FRESULT rc; /* Result code */
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DIR dir; /* Directory object */
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FILINFO fno; /* File information object */
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uint32_t bw, br, i;
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f_mount(0, &Fatfs); /* Register volume work area (never fails) */
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xprintf("\nOpen an existing file (message.txt).\n");
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rc = f_open(&Fil, "MESSAGE.TXT", FA_READ);
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if (rc) die(rc);
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xprintf("\nType the file content.\n");
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for (;;) {
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rc = f_read(&Fil, Buff, sizeof Buff, &br); /* Read a chunk of file */
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if (rc || !br) break; /* Error or end of file */
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for (i = 0; i < br; i++) /* Type the data */
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putchar(Buff[i]);
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}
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if (rc) die(rc);
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xprintf("\nClose the file.\n");
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rc = f_close(&Fil);
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if (rc) die(rc);
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xprintf("\nCreate a new file (hello.txt).\n");
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rc = f_open(&Fil, "HELLO.TXT", FA_WRITE | FA_CREATE_ALWAYS);
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if (rc) die(rc);
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xprintf("\nWrite a text data. (Hello world!)\n");
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rc = f_write(&Fil, "Hello world!\r\n", 14, &bw);
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if (rc) die(rc);
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xprintf("%u bytes written.\n", bw);
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xprintf("\nClose the file.\n");
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rc = f_close(&Fil);
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if (rc) die(rc);
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xprintf("\nOpen root directory.\n");
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rc = f_opendir(&dir, "");
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if (rc) die(rc);
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xprintf("\nDirectory listing...\n");
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for (;;) {
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rc = f_readdir(&dir, &fno); /* Read a directory item */
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if (rc || !fno.fname[0]) break; /* Error or end of dir */
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if (fno.fattrib & AM_DIR)
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xprintf(" <dir> %s\n", fno.fname);
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else
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xprintf("%8lu %s\n", fno.fsize, fno.fname);
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}
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if (rc) die(rc);
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xprintf("\nTest completed.\n");
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for (;;) ;
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}
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/*---------------------------------------------------------*/
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/* User Provided Timer Function for FatFs module */
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/*---------------------------------------------------------*/
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uint32_t get_fattime (void)
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{
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return ((uint32_t)(2012 - 1980) << 25) /* Year = 2012 */
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| ((uint32_t)1 << 21) /* Month = 1 */
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| ((uint32_t)1 << 16) /* Day_m = 1*/
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| ((uint32_t)0 << 11) /* Hour = 0 */
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| ((uint32_t)0 << 5) /* Min = 0 */
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| ((uint32_t)0 >> 1); /* Sec = 0 */
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}
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