1 | typedef unsigned char BYTE;
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2 |
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3 | ...
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4 |
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5 | // SDCARD
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6 | void sdcard_test (void) {
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7 |
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8 | FATFS fs[1]; /* Work area (file system object) for logical drives */
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9 | FIL fsrc, fdst; /* file objects */
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10 | BYTE buffer_sd[4096]; /* file copy buffer */
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11 | FRESULT res; /* FatFs function common result code */
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12 | UINT br, bw; /* File read/write count */
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13 |
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14 |
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15 | disk_initialize(0);
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16 |
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17 | /* Register work area for each volume (Always succeeds regardless of disk status) */
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18 | f_mount(0, &fs[0]);
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19 |
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20 | /* Open source file on the drive 1 */
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21 | res = f_open(&fsrc, "0:my_test.txt", FA_OPEN_EXISTING | FA_READ);
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22 | sprintf(&lcd.buffer[0],"Open Read res=%d",(UINT)res); //lcd.buffer ist global definiert
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23 | printf_tft(1,15,lcd.buffer);
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24 |
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25 | /* Create destination file on the drive 0 */
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26 | res = f_open(&fdst, "0:dstfile1.txt", FA_CREATE_ALWAYS | FA_WRITE);
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27 | sprintf(&lcd.buffer[0],"Open Write res=%d",(UINT)res);
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28 | printf_tft(1,30,lcd.buffer);
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29 |
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30 | /* Copy source to destination */
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31 | for (;;) {
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32 | res = f_read(&fsrc, buffer_sd, sizeof(buffer_sd), &br); /* Read a chunk of src file */
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33 | sprintf(&lcd.buffer[0],"Read Anzahl: %d (res=%d)",br,(UINT)res);
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34 | printf_tft(1,45,lcd.buffer);
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35 | delay(100);
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36 |
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37 | if (res || br == 0) break; /* error or eof */
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38 | res = f_write(&fdst, buffer_sd, br, &bw); /* Write it to the dst file */
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39 | if (res || bw < br) break; /* error or disk full */
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40 | }
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41 |
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42 | /* Close open files */
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43 | f_close(&fsrc);
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44 | f_close(&fdst);
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45 |
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46 | /* Unregister work area prior to discard it */
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47 | f_mount(0, NULL);
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48 | }
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