37 lines
806 B
C
37 lines
806 B
C
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#include <stdint.h>
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#include "usecfs_dev.h"
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#include "spi_flash.h"
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static uint32_t part_base = 0xFFFFFFFF;
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static uint32_t part_size = 0;
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void *block_open(void *args_ptr)
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{
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uint32_t *args = (uint32_t *)args_ptr;
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part_base = args[0];
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part_size = args[1];
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return &part_base;
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}
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int block_read(void *dev, void *_buf, uint32_t lba)
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{
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if (part_size == 0)
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return -1;
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return spi_flash_read(part_base + (lba * BLOCK_SIZE), _buf, BLOCK_SIZE);
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}
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int block_write(void *dev, const void *_buf, uint32_t lba)
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{
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if (part_size == 0)
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return -1;
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spi_flash_sector_erase(part_base + lba * BLOCK_SIZE);
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return spi_flash_write(part_base + lba * BLOCK_SIZE, _buf, BLOCK_SIZE);
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}
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void block_close(void *dev)
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{
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(void)dev;
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part_base = 0xFFFFFFFF;
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part_size = 0;
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}
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