Difference between revisions of "USB to serial adapter"

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m (Usage)
m (Installation)
Line 19: Line 19:
  
 
==Installation==
 
==Installation==
 
+
<pre class="host">
  $ make linux-menuconfig
+
  $ make linux26-menuconfig
Device Drivers  ---> [*] USB support  ---> <M>   USB Serial Converter support
+
</pre>
  Device Drivers  ---> [*] USB support  ---> <M>  USB Serial Converter support ---> <M>  USB FTDI Single Port Serial Driver
+
<pre class="config">
Device Drivers  ---> [*] USB support  ---> <M>  USB Serial Converter support  ---> <M>  USB Prolific 2303 Single Port Serial Driver
+
  Device Drivers  --->  
+
    [*] USB support  --->
  $ make
+
        ...
 +
              *** USB port drivers ***
 +
        <M>  USB Serial Converter support
 +
            ...
 +
            <M>  USB FTDI Single Port Serial Driver
 +
            <M>  USB Prolific 2303 Single Port Serial Driver
 +
</pre>
 +
<pre class="host">
 +
  $ make linux26 && make
 +
</pre>
  
 
copy following drivers on your target or reflash your rootfs ([[Linux_drivers_generalities |for more infos, see this page]])
 
copy following drivers on your target or reflash your rootfs ([[Linux_drivers_generalities |for more infos, see this page]])

Revision as of 11:14, 4 February 2009

Page under construction... Construction.png Informations on this page are not guaranteed !!

This type of adapter allows you to add several serial (RS232) ports to your APF board, through the USB Host interface (only available on DevFull & APF27)

Tested materials

The commercial adapters can be separated in 2 categories, because there are only 2 USB<->serial low cost chipmakers:

  • FTDI one
  • Prolific one (pl23xx)
Model Chip Driver Comments
Trendnet TU-S9 pl2303 NT NA
working NT NA

Installation

 $ make linux26-menuconfig
 Device Drivers  ---> 
     [*] USB support  --->
         ...
               *** USB port drivers ***
         <M>   USB Serial Converter support
             ...
             <M>   USB FTDI Single Port Serial Driver
             <M>   USB Prolific 2303 Single Port Serial Driver
 $ make linux26 && make

copy following drivers on your target or reflash your rootfs (for more infos, see this page)

drivers/usb/serial/ftdi_sio.ko
drivers/usb/serial/pl2303.ko
drivers/usb/serial/usbserial.ko

Usage

  • be sure that your USB Host is running on your board: explanations are here
  • Load the module, for example if you have a Prolific based adapter:
# modprobe pl2303

usbcore: registered new interface driver usbserial
usbserial: USB Serial Driver core
usbserial: USB Serial support registered for pl2303
pl2303 1-1.1:1.0: pl2303 converter detected
usb 1-1.1: pl2303 converter now attached to ttyUSB0
usbcore: registered new interface driver pl2303
pl2303: Prolific PL2303 USB to serial adaptor driver
#
  • a new serial device will then appear under /dev/ttyUSBN (N starting at 0 and depending on the number of adapters detected).

Links