From: Nick Teen <xpage_de-LWAfsSFWpa4@public.gmane.org>
To: i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org
Subject: i2c_smbus_write_block_data does not send all bytes?!
Date: Tue, 15 Jul 2008 07:29:56 +0000 (GMT) [thread overview]
Message-ID: <180252.53613.qm@web27607.mail.ukl.yahoo.com> (raw)
Hi Jean,
> You probably want to use i2c_smbus_write_i2c_block_data instead. With
> i2c_smbus_write_block_data, the first data byte isn't real data,
> instead in indicates how many bytes follow until the end of the block.
> It should result in "5D W 11 33 44" in your case though, not sure why
> you get "5D W 11 03 33" instead.
i'm aware of the length field and i2c_smbus_write_i2c_block_data doesn't work, too. Now i get: 5D W 11 44
unsigned char values[3];
int reg = 0x11;
values[0] = 0x33;
values[1] = 0x44;
i2c_smbus_write_i2c_block_data(fd, reg, 2, values);
If i change the third parameter (length) to 1 I get the 0x33.
I've no idea! :-(
Regards,
Nick
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next reply other threads:[~2008-07-15 7:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-15 7:29 Nick Teen [this message]
[not found] ` <180252.53613.qm-WQsacCdWWGLGRxTy+Q50vsz6deESKz/lQQ4Iyu8u01E@public.gmane.org>
2008-07-15 7:47 ` i2c_smbus_write_block_data does not send all bytes?! Jean Delvare
-- strict thread matches above, loose matches on Subject: below --
2008-07-15 8:29 Nick Teen
[not found] ` <884255.29098.qm-WOTGQye7mknGRxTy+Q50vsz6deESKz/lQQ4Iyu8u01E@public.gmane.org>
2008-07-15 10:57 ` Jean Delvare
[not found] ` <20080715125702.48c9569b-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-07-15 12:22 ` Nick Teen
[not found] ` <952972.59634.qm-WQsacCdWWGLGRxTy+Q50vsz6deESKz/lQQ4Iyu8u01E@public.gmane.org>
2008-07-15 12:32 ` Jean Delvare
[not found] ` <20080715143258.2bef9c1e-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-07-15 13:02 ` Nick Teen
[not found] ` <732644.12112.qm-qWTMlLQujKzGRxTy+Q50vsz6deESKz/lQQ4Iyu8u01E@public.gmane.org>
2008-07-15 13:13 ` Jean Delvare
[not found] ` <785052.52325.qm@web27604.mail.ukl.yahoo.com>
[not found] ` <785052.52325.qm-qWTMlLQujKzGRxTy+Q50vsz6deESKz/lQQ4Iyu8u01E@public.gmane.org>
2008-07-15 16:52 ` Jean Delvare
[not found] ` <20080715185223.7f2f39aa-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org>
2008-07-15 17:28 ` Nick Teen
[not found] ` <968764.38783.qm-fkCdBXra523GRxTy+Q50vsz6deESKz/lQQ4Iyu8u01E@public.gmane.org>
2008-07-15 17:52 ` Jean Delvare
2008-07-14 20:32 Nick Teen
[not found] ` <247321.99325.qm-SFSZVIN0dfnGRxTy+Q50vsz6deESKz/lQQ4Iyu8u01E@public.gmane.org>
2008-07-14 20:54 ` Jean Delvare
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