Skip to contentSkip to conversation

CONFIG_DTT_LM75 and CFG_EEPROM_PAGE_WRITE_ENABLE ???

U-Boot-Users Erik Theisen 1 participant 1 message Apr 16, 2005

lore
Share & tools
lore

Erik Theisen

author
#0 lore raw
Quoted 11 lines · In message <425E665D.7030401@im...> Steven Scholz wrote:

is it realy necessary to define CFG_EEPROM_PAGE_WRITE_ENABLE in order
to use
the LM75 within U-Boot?

#ifdef CONFIG_DTT_LM75
#if !defined(CFG_EEPROM_PAGE_WRITE_ENABLE) || \
(CFG_EEPROM_PAGE_WRITE_BITS < 1)

 # error "CFG_EEPROM_PAGE_WRITE_ENABLE must be defined and
 CFG_EEPROM_PAGE_WRITE_BITS must be greater than  1 to use 
CONFIG_DTT_LM75"
 #endif

This is going somewhat on recollection...

The lm75 requires a multibyte write. The old i2c layer only worked with 1 byte at a time unless page
writes were used. The newer i2c allows multibyte writes by default.
I believe it can go away.

Erik
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/enriched
Size: 815 bytes
Desc: not available
Url : http://lists.denx.de/pipermail/u-boot/attachments/20050416/848de182/attachment.bin