libftdi Archives

Subject: RE: Help with FT2232H flow control

From: Dave McMahan <dmcmahan@xxxxxxxxxxxx>
To: "libftdi@xxxxxxxxxxxxxxxxxxxxxxx" <libftdi@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 18 Aug 2015 21:29:42 +0000
Anders,

Thanks for your quick response.

Unfortunately, I can't use only plain serial communications.  I must use GPIO 
signals connected to Port A and serial communications on Port B.    

As far as I can tell on Android Lollipop running on a Nexus9 tablet, there is 
no kernel driver for ftdi.   

In any event, I must use libftdi to control the GPIO signals (both inputs and 
outputs) and I thought it would be a bad idea to mix a kernel driver with 
libftdi calls on the same device at the same time.


  -dave



> From: Anders Larsen [mailto:al@xxxxxxxxxxx] 
> Sent: Tuesday, August 18, 2015 5:22 PM
> To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: Help with FT2232H flow control
>
> Hi,
>
> On 2015-08-18 22:01, Dave McMahan wrote:
> > Hello,
> > 
> > I am using the FT2232H chip in an Android (linux) environment.  I am
> > working with the latest libftdi (version 1.2), libusb (version 1.0).
> > 
>
> It sounds as if you are using plain serial communications?
>
> If so, the FT2232H should Just Work (tm) - the Kernel driver ftdi_sio.ko
> should take care of everything, including hardware flow control
> (without any special libraries like libftdi or D2XX)
>
> Cheers
> Anders



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