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Add lua expect(string)

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Add simple expect functionality.

The expect(string) function will wait for input from the tty device and
only return when there is a string match. Regular expressions are
supported.

Example:

script = expect('password:'); send('my_password\n')
This commit is contained in:
Martin Lund 2024-04-12 18:20:27 +02:00
parent 0afae5d3ee
commit fc54df1f22
4 changed files with 133 additions and 7 deletions
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15
man/tio.1.in
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@ -375,17 +375,18 @@ Send ctrl-t character
.PP
Tio suppots Lua scripting to easily automate interaction with the tty device.
This means that in addition to the Lua API tio makes the following functions
available:
In addition to the Lua API tio makes the following functions available:
.TP 6n
.IP "\fBexpect(string)"
Expect string - waits for string to match before continueing. Supports regular expressions. Special characters must be escaped with '\\\\'.
.IP "\fBsend(string)"
Send string.
.IP "\fBmodem_send(file, protocol)"
Send file using x/y-modem protocol.
Protocol can be any of XMODEM_1K, XMODEM_CRC, YMODEM.
.IP "\fBsend(string)"
Send string.
.IP "\fBhigh(line)"
Set tty line high.
.IP "\fBlow(line)"
@ -660,10 +661,14 @@ Enable RS-485 mode:
$ tio --rs-485 --rs-485-config=RTS_ON_SEND=1,RX_DURING_TX /dev/ttyUSB0
.TP
Script manipulation of DTR and RTS lines upon first connect:
Manipulate DTR and RTS lines upon first connect to reset connected microcontroller:
$ tio --script "high(DTR); low(RTS); msleep(100); toggle(DTR)" --script-run once /dev/ttyUSB0
.TP
Automatically log in to connected OS:
$ tio --script "expect('password:'); send('my_password\\n')" /dev/ttyUSB0
.SH "WEBSITE"
.PP