25 lines
1.4 KiB
Plaintext
25 lines
1.4 KiB
Plaintext
Both the keyboard and the serial ports of the Inka should be connected in order
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to use it with BRLTTY. The Inka itself is capable of communicating entirely via
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the keyboard port, but the Linux kernel keyboard driver can't handle this.
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In order to use the Inka with BRLTTY it is necessary to have the latest version
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(dated 1998) of the firmware. If the Inka says either "mode 1" or "mode 2" at
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the end of the version number after it's connected to a computer and turned on
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then it has the necessary firmware. If it doesn't then it'll probably need an
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upgrade. To do this, contact Baum and give them the serial number of the Inka
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(which is printed on the under side of the device).
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The newer firmware supports two modes of operation. Mode 1 uses the old Inka
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protocol and transfers data at 57,600 baud with non-standard flow control. Mode
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2 uses the new Inka protocol and transfers data at 19,200 baud with no flow
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control.
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The Inka defaults to mode 1. This is shown on the braille display when
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the Inka first initializes or after a soft reset.
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Before running BRLTTY, change the Inka to mode 2 by pressing tl1+tl2+tr3 (which
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is the digit 2 represented as a dot-six number). To return to mode 1 (neither
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necessary nor desirable under Linux), press tl1+tr3 (which is the digit 1
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represented as a dot-six number). The new mode setting is shown on the display
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at the end of the line, after the version number and date of the firmware.
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