On 23/06/2015 16:08, John Weber wrote:
On 06/22/2015 10:40 PM, Stef wrote:
Hi Stef,
Debug levels are defined like this for genesys_low:
genesys_low.h:#define DBG_io 6 /* io functions */
genesys_low.h:#define DBG_io2 7 /* io functions that are
called very often */
genesys_low.h:#define DBG_data 8 /* log image data */
So if you get the problem at log level below seven, we must look at
DBG_data usage in genesys_low.c . But here isn't on. So try 7 and 6 as
debug levels. Once we know the exact kind of logging level that fix this
timing issue, the next step is to remove this messages one by on until
you find the one that makes difference. I haven't seen nothing obvious,
so experimenting/testing is needed.
sanei_genesys_wait_for_home(), sanei_genesys_set_buffer_address()
and sanei_genesys_write_ahb functions() are printing messages in the
middle of the code and are first candidates to try, in this order.
It works at debug level 7, but not 6. I'm not sure from the rest of
your answer if there's testing you want me to do, or if it's just
informational. I'm a retired sys admin/engineer but not much of a
programmer. I'm willing to test more, but I'll need more detailed
instructions.
Thanks,
John
Hello,
I was expecting something like that.
All DBG_io2 a mere traces, and I don't see how much they slow down
things. Since I don't have this kind of problem on my hardware, I need
your help. I don't see no other approach than trial and error.
1 - compile sources
2 - set logs to 7
3 - check that scanner is working with compiled sources and the log
level
4 - change a line where there is DBG_io2 level in DBG_data so it
isn't traced any more, write down the line number
5 - compile and run, if it is still working, go to step 4 and
change one more debug trace
6 - since it isn't working anymore, you have find where a pause
must be set, please send it to me
There are tutorials to build SANE from sources, one thing I like to
do is to run the freshly compiled version without doing make install,
when running scanimage from top source directory:
export LD_PRELOAD=backends/.libs/libsane-genesys.so
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