Thank you for make it clear.
;-) Lets transform this knowledge into practical result!
I have successfully compiled i2c-tools for x86 Android.
So, what is the exact command line to grab all loaded into GSL 1680 chip
firmware?
i2cbus or i2cget? and how to use it , How via this toolset I could
enumerate all 256 chunks of 128 bytes using information that chip resides
on 0x40 I2c adress, dev is /dev/i2c-3, Page register is 0xF0 (8 bit too, so
holds 256 addresses) and registers that store current 128 chunk are
0x00-0x7F
Cheers,
Serge.
On Tuesday, May 19, 2015 at 1:48:14 PM UTC+3, Michal Suchanek wrote:
>
> On 19 May 2015 at 12:36, <sergk...@gmail.com <javascript:>> wrote:
> > "On Tuesday, May 19, 2015 at 12:53:43 PM UTC+3, Michal Suchanek wrote:
> > That's one page of the configuration which is 128 bytes or 32 integers.
> > Writing the page register gives access (read or write) to different
> pages.
> > So one blob might have multiple such pages or the firmware can be
> > composed of multiple pages stored in multiple blobs"
> >
> >
> > Still not clear - where does stored these blobs?
> >
> > 0x00-0x7F = 128 items 128 * x =1 byte registers. So physically chip
> could
> > reside only 128 byte.
> > 0xF0: PAGE register. Contains the memory page number currently mapped in
> the
> > 0x00-0x7F registers.
> >
> >
> > What is logic of these Page register and 0x00-0x7F registers?
> >
> > Am I right that firmware is loaded into ram splitted by 128 byte pages
> and
> > 0xF0 register contains a set of adressed in RAM of such 128 byte chunks?
>
> Yes, that's what the datasheet says. F0 stores a page number and each
> page has different set of registers to map to 00-7F. The chip has more
> memory than can be accessible through i2c at any given time due to the
> i2c 1 byte address limit so it uses paging to make more data
> accessible.
>
> Thanks
>
> Michal
>
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