[Oberon] Re (2): Re (2): File transfer.

[Tomas Kral]

On Fri, 9 Jun 2017 07:51:14 -0700
<peter at easthope.ca> wrote:

> From:	Chris Burrows <chris at cfbsoftware.com>
> Date:	Fri, 9 Jun 2017 23:22:59 +0930
> > PCLink can be used for the system on the gate array machine as well.
> >  ...
> >  ... two systems as if they were connected via RS232 serial ports.
> 
> Thanks Chris.  Visually the connection appears to be USB but "driver" 
> software allows the connection to appear as RS232 at some level.  
> Understanding the details implies understanding UARTS and USB chips. 
> (?) Beyond me at present but I trust that it works.
> 
>                       ... Lyall E.
>                       
> 
> 

Hi,

If you use Linux, it has FTDI VCP drive built into teh kernel.
Serial line is then accessed over USB channel as /dev/ttyUSB{0..n}

USB appears to me as multiple RS232 links over the same connector with
channels and addressing.

When I connect FPGA to USB Linux port, this gives,

pi at raspberrypi /usr/src/oberon $ dmesg | grep FTDI

[32835.456079] usbserial: USB Serial support registered for FTDI USB
Serial Device
[32835.457119] ftdi_sio 1-1.2.2:1.0: FTDI USB Serial Device converter
detected
[32835.540857] usb 1-1.2.2: FTDI USB Serial Device converter now
attached to ttyUSB0
[32835.541994] ftdi_sio 1-1.2.2:1.1: FTDI USB Serial Device converter
detected
[32835.543194] usb 1-1.2.2: FTDI USB Serial Device converter now
attached to ttyUSB1

Further reading I downloaded here,
http://www.google.cz/url?q=http://www.ftdichip.com/Support/Documents/AppNotes/AN_220_FTDI_Drivers_Installation_Guide_for_Linux.pdf&sa=U&ved=0ahUKEwialLKthbHUAhXRYlAKHWu1AAIQFggUMAA&usg=AFQjCNFTY3kKj_EOxYtbGtdi01X_CNOR2w

Tomas

-- 
Tomas Kral <thomas.kral at email.cz>