libftdi Archives

Subject: Re: libftdi 1.1 broken support for FT230X

From: Thomas Jarosch <thomas.jarosch@xxxxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Cc: Nathael Pajani <nathael.pajani@xxxxxxx>
Date: Wed, 05 Mar 2014 16:55:28 +0100
Hi Nathael,

On Tuesday, 18. February 2014 10:50:49 Szabo Tamas wrote:
> Hello,
> 
> I have used libftdi 1.0 in the past to communicate with a 230X device
> and everything worked fine, but the new partial support for FT230X chips
> breaks it.
> The device I use looks like this:
>      vid = 0x0403
>      pid = 0x6015
>      bcdDevice = 0x1000
> 
> Up until libftdi 1.1 the ftdi->type was TYPE_BM (set in ftdi_init) which
> worked fine.
> But now the type is set to TYPE_230X in ftdi_usb_open_dev, leading to an
> incorrect baudrate to be returned by ftdi_convert_baudrate when trying
> to set the baudrate of the connection with ftdi_set_baudrate.
> 
> The other devices of TYPE_R that I use continue to work fine and are not
> affected by this, only the ones with TYPE_230X.
> For now, I have downgraded to use the older version, but it would be
> great if this could be fixed asap.

could you take a look at this libftdi issue? Pretty please :)

Looks like the partial FT230X support influenced
the baudrate calculation code as the chip type changed.

Cheers,
Thomas


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