28 lines
1.5 KiB
Plaintext
28 lines
1.5 KiB
Plaintext
Disk Access Test
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This test is intended to verify the functionality of disk devices in Zephyr.
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It is designed to test the NXP USDHC disk driver, but can be used for other
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disk devices as well. The test has the following phases:
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* Setup test: Verifies that disk initialization works, as well as testing
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disk_access_ioctl by querying the disk for its sector size and sector count.
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Note that this test also verifies the memory buffers reserved for read/write
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tests are sufficiently large, and will fail if they are not (in which case
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the value of SECTOR_SIZE must be increased)
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* Read test: Verifies that the driver can consistently read sectors. This test
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starts by reading sectors from a variety of start locations. Each location is
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read from several times, each time with a different number of desired sectors.
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The test deliberately will read sectors beyond the end of the disk, and if
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the driver does not reject this read request the tests will fail. Following
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these sector reads, the driver will read multiple times from the same memory
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location, to verify that the data being returned is the same.
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* Write test: Verifies that the driver can consistently write sectors. This test
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follows the same flow as the read test, but at each step writes data to the
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disk and reads it back to verify correctness. The test first performs writes
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of various length to various sectors (once again, the driver must reject
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writes that would be outside the bounds of the disk), then performs multiple
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writes to the same location.
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