Korenix | Appendix
61
7-3
USB Driver for GSM modems
Some USB 3G modems use the driver USB_SERIAL_COPTION in linux kernel. However, not all
user specified USB idProduct and idVendor are include in the driver. For USB idProduct and
idVendor not included in linux kernel v2.6.20, JetOS has other way to add it.
modprobe c_option vendor=idVender product=idProduct
7-4
Change RS485 mode on JetCard 1608
Before you start using JetCard 1608 RS-422/485, configure the DIP Switch settings of each port.
DIP Switch can configure RS-422, 4-wire RS-485, or 2-wire RS-485. In addition to configure the
DIP Switch to setup hardware, use
setserial
command to tell the JetCard driver to change
RS-485 mode is necessary. (Only RS-485 need to invoke setserial command)
RS485 2W
setserial -a /dev/ttyS1 mode 485_2W_ON card 1608
setserial -a /dev/ttyS1 mode 485_2W_OFF card 1608
RS485 4W
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