On 03/03/2014 08:36 PM, Romanic Dean wrote:
Thanks Jean but doubt is because of this data sheet
Please don't top-post.
http://www.st.com/st-web-ui/static/active/jp/resource/technical/document/application_note/CD00079564.pdf<https://legacy.aricent.com/OWA/redir.aspx?C=E7rMQdCIsEe5h1I8xjn4nfrwpkv6CtFIOVJ_ZzqMu_GSLT6DEkWx_bxJe_XdhaG5aieI22_WnSo.&URL=http%3a%2f%2fwww.st.com%2fst-web-ui%2fstatic%2factive%2fjp%2fresource%2ftechnical%2fdocument%2fapplication_note%2fCD00079564.pdf>
Cool link. Points to something behind a firewall afaics.
Jean, the initial link works.
Where sensor application senses and log the temp. into EEPROM.
The AN describes how to use a microcontroller (not running Linux)
to access a temperature sensor (not LM73) and store the retrieved
data in an EEPROM.
What does that have to do with the LM73 driver in Linux ?
Guenter
Thanks
On Mon, Mar 3, 2014 at 1:33 PM, Jean Delvare <jdelvare@xxxxxxx> wrote:
On Mon, 3 Mar 2014 10:58:21 -0800, Romanic Dean wrote:
Hi all
I am going through LM73 sensor implementation and wanted to know
how different entries in sysfs is populated .
I can see max and min temp. values are hard coded in code itself
#define LM73_TEMP_MIN (-256000 / 250)
#define LM73_TEMP_MAX (255750 / 250)
But what about the current temp. values ,how it is populated?
Is it read from EEPROM and then populated into sysfs entry temp_input1?
Can anyone let me know these values are populated and what is role of
EEPROM here?
What makes you think there is any EEPROM involved?
You keep asking vague questions, we can't really help you.
The datasheet is available:
http://www.ti.com/product/LM73
The source code is available:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/hwmon/lm73.c
The driver documentation is available:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/hwmon/lm73
The sysfs interface documentation is available:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/hwmon/sysfs-interface
A brief introduction to user-space tools is available:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/hwmon/userspace-tools
So please read all of these. If you still have question, feel free to
ask, but in a clear way so that we can understand.
--
Jean Delvare
SUSE L3 Support
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