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60 lines
1.1 KiB
ReStructuredText
60 lines
1.1 KiB
ReStructuredText
4 years ago
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DISK IO
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=======
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Disk IO provides common disk access interfaces for different storage medias
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It supports widely used disk access APIs like initialize/read/write/status etc.
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Storage Media
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-------------
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The different storage media can be SD/MMC, USB, Flash etc.
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Storage media has the dependency to the low level driver modules.
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Dependencies
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------------
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::
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DISKIO
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SD/MMC
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MCI
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* SD/MMC media accessor
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* Peripheral that supports multimedia card interface (MCI)
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API Example
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------------
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::
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dstatus_t status;
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dresult_t res;
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status = disk_initialize( 0 /*drv*/);
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if(0 == status){
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uint8_t buffer[10]="Sample Data";
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status = disk_status(0);
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switch(status){
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case 0:
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res = disk_write(0 /*drv*/, buffer, 7 /*Sector*/, 512 /*count*/);
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if(RES_OK == res){
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res = disk_read(0 /*drv*/, buffer, 7 /*Sector*/, 512 /*count*/);
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if(RES_OK == res)
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return 0;
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}
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break;
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case STA_NODISK:
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//Disk not preset, Note that FatFs does not refer this flag
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break;
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case STA_NOINIT:
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//Disk init failed
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break;
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case STA_PROTECT:
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//Disk is write protected
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break;
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}
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}
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