Eurotech BoltGATE 20-25, Руководство пользователя

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10 How to Access the Interfaces Under Linux BoltGATE 20-25 User Manual Rev. 1-1
10.7 COM 1 to 4, TTL Serial Console
The BoltGATE 20-25 has the following serial and console ports:
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2x RS-232/422/485 Serials, 9-wire, Insulated (COM 1, COM 4)
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2x RS-422/485 Serials, 5-wire, Insulated (COM 2, COM 3)
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1x TTL Serial Console
The BoltGATE 20-25 exposes the ports as follows:
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COM 1:
/dev/ttyCOM1
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COM 2: /dev/ttyCOM2
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COM 3:
/dev/ttyCOM3
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COM 4: /dev/ttyCOM4
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TTL Serial Console:
/dev/ttyS0 (available in the Service Panel)
You need to configure the serial ports mode before they will work.
10.7.1 How to Set the RS-232/422/485 Mode
You can configure the serial port mode in the following ways, A or B:
A. Using the ethsetserial utility
B. Implementing the ioctl in the source code
10.7.1.1 How to Use the Ethsetserial Utility to Configure the COM Ports
NOTE:
ser_port_name
can be:
/dev/ttyXRx , ttyCOMx
To set a serial port in RS-232 mode, enter the following command:
ethsetserial –p ser_port_name –m232
To set a serial port in RS-422 mode, enter the following command:
ethsetserial –p ser_port_name –m422
To set a serial port in RS-485 mode, enter the following command:
ethsetserial –p ser_port_name –m485
To see all the available options, enter the following command:
ethsetserial –h
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