= USB Serial Adapters =

FTDI FT232 supported

dmesg output:
{{{
[  253.244663] ftdi_sio 1-1.1:1.0: FTDI USB Serial Device converter detected
[  253.244821] usb 1-1.1: Detected FT232RL
[  253.246307] usb 1-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
}}}

Connect to PC running CommView. The PC serial port should be connected to the USB serial adapter that is connected to the 825 with a crossover cable such as Cardinal 8545-B099-0A.

The default baud rate is likely 9600. Settings can be changed with the stty command such as:

{{{
card825gen2:~$ stty -F /dev/ttyUSB0 115200 raw -echo

card825gen2:~$ echo "hello" > /dev/ttyUSB0
}}}

CommView will show:
{{{
hello[LF]
}}}

To test receiving data type:

{{{
cat /dev/ttyUSB0
}}}
Type in CommView "1234567890"
{{{
1234567890
}}}

4/5/2023 Found prolific driver was not included. Updated build config to include Prolific. Now supports FTDI and Prolific chip based USB to serial adapters.


Device files /dev/ttyUSB* will be created automatically when USB to serial devices are connected, and removed when USB to serial devices are disconnected. 

Test with various USB to serial adapters connected:
{{{
card825gen2:~$ ls /dev/ttyUSB*
/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3  /dev/ttyUSB4  /dev/ttyUSB5  /dev/ttyUSB6  /dev/ttyUSB7


card825gen2:~$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
        |__ Port 3: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M
        |__ Port 1: Dev 9, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
        |__ Port 4: Dev 4, If 0, Class=Hub, Driver=hub/4p, 480M
            |__ Port 1: Dev 5, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
            |__ Port 2: Dev 6, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
            |__ Port 3: Dev 7, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
            |__ Port 4: Dev 8, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
        |__ Port 5: Dev 3, If 0, Class=, Driver=, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 11, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
        |__ Port 2: Dev 12, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 12M
        |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
        |__ Port 4: Dev 13, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M


}}}

The CCommSerial class in lib825ev is updated to allow for USB to serial support.