回复： Re: [lm-sensors] eeprom write!

回复： Re: [lm-sensors] eeprom write!

[junping feng]

   I am sorry for my fault of the eeprom. My eeprom is
AT24C01A,and its size is 1Kbits(128Bytes).
   In the ile /lm_sensors-2.5.0/kernel/chips/eeprom.c,
how can I complete the function of writing to the
chip?
please help me !
   Can you give me the source codes?
   Thanks!


--- Ben Dooks <ben@fluff.org.uk>??:

> On Tue, Sep 20, 2005 at 05:52:54PM +0800, junping
> feng wrote:
> > Hi,
> >   My cpu is PowerPC8250.I2C device is eeprom
> AT24C01.
> > I want to access the eeprom,read from the eeprom
> and
> > write to it.
> >   I have read the file
> > /lm_sensors-2.5.0/kernel/chips/eeprom.c,but this
> file
> > can't achieve writing function and only can read
> 128
> > bytes.
> >   How can i complete the writing functions and
> read
> > total the chip (1024 bytes).
> 
> The chip is only 128 bytes big. You are confusing
> the
> _bit_ size (which is 1024bits).
> 
> I have no actual experience of this chip, but the
> data-sheet implies it is only capable of page-write
> of 4 bytes at a time, so it could be the eeprom
> driver is trying to write too much data in one go.
> 
> -- 
> Ben (ben@fluff.org, http://www.fluff.org/)
> 
>   'a smiley only costs 4 bytes'
> 



		
___________________________________________________________ 
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回复： Re: [lm-sensors] eeprom write!

[Mark Studebaker]

see the userspace programs and documents in prog/eepromer
in the lm-sensors package.

the kernel module does not support writes.

junping feng wrote:
>    I am sorry for my fault of the eeprom. My eeprom is
> AT24C01A,and its size is 1Kbits(128Bytes).
>    In the ile /lm_sensors-2.5.0/kernel/chips/eeprom.c,
> how can I complete the function of writing to the
> chip?
> please help me !
>    Can you give me the source codes?
>    Thanks!
> 
> 
> --- Ben Dooks <ben@fluff.org.uk>??:
> 
> 
>>On Tue, Sep 20, 2005 at 05:52:54PM +0800, junping
>>feng wrote:
>>
>>>Hi,
>>>  My cpu is PowerPC8250.I2C device is eeprom
>>
>>AT24C01.
>>
>>>I want to access the eeprom,read from the eeprom
>>
>>and
>>
>>>write to it.
>>>  I have read the file
>>>/lm_sensors-2.5.0/kernel/chips/eeprom.c,but this
>>
>>file
>>
>>>can't achieve writing function and only can read
>>
>>128
>>
>>>bytes.
>>>  How can i complete the writing functions and
>>
>>read
>>
>>>total the chip (1024 bytes).
>>
>>The chip is only 128 bytes big. You are confusing
>>the
>>_bit_ size (which is 1024bits).
>>
>>I have no actual experience of this chip, but the
>>data-sheet implies it is only capable of page-write
>>of 4 bytes at a time, so it could be the eeprom
>>driver is trying to write too much data in one go.
>>
>>-- 
>>Ben (ben@fluff.org, http://www.fluff.org/)
>>
>>  'a smiley only costs 4 bytes'
>>
> 
> 
> 
> 
> 		
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> http://cn.mail.yahoo.com
> 
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