That's very helpful. The functions should be correct for data on the slave
(it's little endian). If we cast host integers to char and use these functions
would be incorrect.
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-------- Original message --------
From: Robin Gilks <[email protected]>
Date: 02/26/2014 4:59 PM (GMT-05:00)
To: "OWFS (One-wire file system) discussion and help"
<[email protected]>
Subject: Re: [Owfs-developers] Trying to nail ds2413 endian bug
> Not getting very far but at least it is something in the sibling
> processing - I just can't work out what it does in there!!
Can someone confirm that the functions in owfs/module/owlib/src/c/util.c
int UT_getbit(const BYTE * buf, const int loc)
int UT_get2bit(const BYTE * buf, const int loc)
void UT_setbit(BYTE * buf, const int loc, const int bit)
void UT_set2bit(BYTE * buf, const int loc, const int bits)
won't work for big endian as they all treat the input (whether it be UINT
or whatever) as a little endian array, for example as its used in
ow_write>>FS_write_a_bit()
It would certainly explain the ds2413 problem I (and others) have.
Not sure of the solution, maybe a sprinkling of htonl() and ntohl() calls
since they are endian specific for the target?
Cheers
--
Robin Gilks
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