Hello, Pierre Willenbrock a ?crit : > Guillaume Gastebois schrieb: > > Hello, > > > > You can find attached a patch which works like my original code (with > > different contrast and calibration between 2 scans...). > > > > I removed controversed comments (sorry). > > Thanks for the patch. I see that you added DAC_CANONLIDE90 at one place. > This is probably needed at others places, too. (especially in > genesys.c, iirc the way to encode the shading calibration data depends > on one of the xx_type variables.) > DAC_CANONLIDE90 appears only in genesys_devices.c and genesys_gl841.c.
> Then i see the LiDE 35's GPIO initialization sequence is used. Are you > willing to play around with the involved bits to find the state > transitions that don't reset the scanner? This is not strictly > necessary, as the sequence works. But there may be some subtleties If i dont add same constraint as lide 35 I get black image output. > hiding there. Try adding delays between the state transitions when > testing that, fast switching through the sequence sometimes leads to > inconsistent results. (By "state" i mean the state of the gpio pins > configured as output.) > How to do that ???? > For the LiDE 35 i found at least these constraints(i had a small state > table that showed the allowed transitions, but i can't find it now): > - GPO17 cannot be switched on when GPIO8 is off > - GPIO9 cannot be switched off when GPIO8 is off > > > I see in some case that my scanner locks writing : "[genesys] > > sanei_genesys_read_register (0x41, 0xf4) completed" and to unlock I have > > to push one of the 4 buttons !!!!!! Idea about that ? > > The scan is not starting for some reason. I don't know what causes that. > May be a power issue, depending on correctly setting the gpios or sth > like that. The windows snoop may say that but I remember fixing gpio regs with thos snoop.... Must be investigated but later. > > > Regards > > Guillaume > > Regards, > Pierre It remains the bigest problem : calibration. Because I get different contrast and sometimes vertical contrasted lines (bad shading). To be continued. Regards Guillaume
