chip_ready patch for SST39VF640xB
Niels Gram Jeppesen
ngj at danelec-marine.com
Fri Feb 2 11:03:29 EST 2007
In cfi_cmdset_0002.c, chip_ready seems to be unreliable on the SST39VF640xB chip. The attached patch add two extra reads to chip_ready in accordance with the chip data sheet (page 3, "Write Operation Status Detection"). This seems to make the write cycle completion detection reliable. I have not tested the patch on any other chips but I would think that it would be harmless on chips that do not need the extra reads.
Best regards; hope this helps,
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