Hello my friends,
I'm really confused about the Chan's FatFS read-function!
I'm able to write and do loggings etc... but reading a file greater than
1 kB doesn't work! I can read up to 1 kB (not including 1 kB).
The problem is I see only 0 (zero) above 1 kB!
My buffer is 2 kB, so it's not the bufferproblem.
1 | int main()
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2 | {
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3 | FATFS Fs;
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4 | FIL FileObject;
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5 | char data[2048];
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6 | const char* FileName = "0:Basic.bin";
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7 | unsigned int ByteToRead = sizeof(data);
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8 | unsigned int ByteRead;
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9 | unsigned char SD = 0;
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10 |
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11 | memset(data, 0, sizeof(data));
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12 |
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13 | if( f_mount(SD, &Fs) != FR_OK )
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14 | return 0;
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15 |
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16 | if(f_open(&FileObject, FileName, FA_OPEN_EXISTING|FA_READ) != FR_OK)
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17 | return 0;
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18 |
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19 | FRESULT res;
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20 | int f, e; f = e = 0;
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21 | while(1)
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22 | {
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23 | res = f_read(&FileObject, data, ByteToRead, &ByteRead);
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24 |
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25 | if(res == FR_OK)
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26 | {
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27 | f++; //just to check number of cycles
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28 | if(ByteRead == 0) break;
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29 | e++;
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30 | }
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31 | }
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32 |
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33 | return 0;
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34 | }
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