libftdi Archives

Subject: Re: ftdi_eeprom: setting cha_vcp=false has no effect on generated eeprom binary

From: Yegor Yefremov <yegorslists@xxxxxxxxxxxxxx>
To: Thomas Jarosch <thomas.jarosch@xxxxxxxxxxxxx>
Cc: libftdi@xxxxxxxxxxxxxxxxxxxxxxx, Holger Mößinger <H.Moessinger@xxxxxxxxx>
Date: Sat, 16 May 2020 21:53:54 +0200
Hi Thomas,

On Thu, May 14, 2020 at 11:21 PM Thomas Jarosch
<thomas.jarosch@xxxxxxxxxxxxx> wrote:
>
> Hi Yegor,
>
> You wrote on Mon, Apr 13, 2020 at 11:32:47PM +0200:
> > I think the decoding of boolean bit fields all need to be changed
> > to "!!(bit test)", so the in memory value will truely be one or zero.
> >
> > Then we can apply changes like this everywhere:
> >
> > -            if ( eeprom->high_current_b == HIGH_CURRENT_DRIVE)
> > +            if (eeprom->high_current_b)
> >                  output[0x01] |= HIGH_CURRENT_DRIVE;
>
> I've bit the bullet and fixed all eeprom boolean bit fields on the branch
>
>     origin/ftdi-eeprom-fix-bitflag-handling
>
>
> @Yegor: I would appreciate it if you could review it.
> I triple reviewed it on my side not to break anything,
> but may be I missed something *fingers crossed*

So far it looks goods to me aside from a typo in the last commit log:

"On TYPE_R 00.3 set mean D2XX, on other devices VCP" -> s/mean/means

I'll try to make a test with FT-X chip and let you know my results.

>
>
> Additionally I've seen that the handling of the VCP driver field
> for TYPE_R chips was not inverted properly, see the extra commit.
>
>
> A colleague recently recommended a new code diff tool to me called "delta":
> https://github.com/dandavison/delta
>
> Here's how I run it:
>
>     git diff origin/master..origin/ftdi-eeprom-fix-bitflag-handling \
>         |delta --dark --keep-plus-minus-markers
>
>
> It makes reading subtle code changes more obvious to me.

Never heard about delta but I like its approach. Thanks. It would be
great if tig would have this functionality.

Cheers,
Yegor

> Cheers,
> Tom

--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
To unsubscribe send a mail to libftdi+unsubscribe@xxxxxxxxxxxxxxxxxxxxxxx   

Current Thread