54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
// eFile.h
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// Runs on either TM4C123 or MSP432
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// High-level implementation of the file system implementation.
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// Daniel and Jonathan Valvano
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// August 29, 2016
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//********OS_File_New*************
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// Returns a file number of a new file for writing
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// Inputs: none
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// Outputs: number of a new file
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// Errors: return 255 on failure or disk full
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uint8_t OS_File_New(void);
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//********OS_File_Size*************
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// Check the size of this file
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// Inputs: num, 8-bit file number, 0 to 254
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// Outputs: 0 if empty, otherwise the number of sectors
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// Errors: none
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uint8_t OS_File_Size(uint8_t num);
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//********OS_File_Append*************
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// Save 512 bytes into the file
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// Inputs: num, 8-bit file number, 0 to 254
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// buf, pointer to 512 bytes of data
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// Outputs: 0 if successful
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// Errors: 255 on failure or disk full
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uint8_t OS_File_Append(uint8_t num, uint8_t buf[512]);
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//********OS_File_Read*************
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// Read 512 bytes from the file
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// Inputs: num, 8-bit file number, 0 to 254
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// location, logical address, 0 to 254
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// buf, pointer to 512 empty spaces in RAM
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// Outputs: 0 if successful
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// Errors: 255 on failure because no data
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uint8_t OS_File_Read(uint8_t num, uint8_t location,
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uint8_t buf[512]);
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//********OS_File_Flush*************
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// Update working buffers onto the disk
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// Power can be removed after calling flush
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// Inputs: none
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// Outputs: 0 if success
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// Errors: 255 on disk write failure
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uint8_t OS_File_Flush(void);
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//********OS_File_Format*************
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// Erase all files and all data
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// Inputs: none
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// Outputs: 0 if success
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// Errors: 255 on disk write failure
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uint8_t OS_File_Format(void);
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