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