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comparison target-utils/calversion/mygetchar.c @ 441:1dcc9e4b71fd

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target-utils/calversion: program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 26 Dec 2018 06:40:02 +0000
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440:44f73d56b6f5 441:1dcc9e4b71fd
1 /*
2 * The interactive command entry (editing) function in libcommon
3 * will call mygetchar() for its character input. It is supposed
4 * to be a blocking wait for input, but in some programs other
5 * processing can be done while waiting - for example, check for
6 * keypad presses as well. This is the basic version which waits
7 * for serial input and nothing else.
8 */
9
10 extern int serial_in_poll();
11
12 int
13 mygetchar()
14 {
15 register int c;
16
17 do
18 c = serial_in_poll();
19 while (c < 0);
20 return c;
21 }