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< title > FatFs - f_chdrive< / title >
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< div class = "para func" >
< h2 > f_chdrive< / h2 >
< p > The f_chdrive function changes the current drive.< / p >
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FRESULT f_chdrive (
const TCHAR* < span class = "arg" > path< / span > < span class = "c" > /* [IN] Logical drive number */< / span >
);
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< h4 > Parameters< / h4 >
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< dt > path< / dt >
< dd > Specifies the < a href = "filename.html" > logical drive number< / a > to be set as the current drive.< / dd >
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< h4 > Return Values< / h4 >
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< a href = "rc.html#ok" > FR_OK< / a > ,
< a href = "rc.html#id" > FR_INVALID_DRIVE< / a >
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< h4 > Description< / h4 >
2017-06-24 06:35:31 +00:00
< p > The < tt > f_chdrive< / tt > function changes the current drive. The initial value of the current drive number is 0. Note that the current drive is retained in a static variable so that it also affects other tasks that using the file functions.< / p >
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< h4 > QuickInfo< / h4 >
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< p > Available when < tt > FF_FS_RPATH >= 1< / tt > and < tt > FF_VOLUMES >= 2< / tt > .< / p >
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< h4 > Example< / h4 >
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< em > f_chdrive< / em > ("2:"); < span class = "c" > /* Set current drive to drive 2 */< / span >
< em > f_chdrive< / em > (""); < span class = "c" > /* No effect (set current drive to current drive) */< / span >
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< h4 > See Also< / h4 >
< p > < tt > < a href = "chdir.html" > f_chdir< / a > , < a href = "getcwd.html" > f_getcwd< / a > < / tt > < / p >
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< p class = "foot" > < a href = "../00index_e.html" > Return< / a > < / p >
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