FreeCalypso > hg > freecalypso-tools

annotate target-utils/flash-boot-test/mygetchar.c @ 197:dbb54db721d1

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target-utils/flash-boot-test written
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 30 Apr 2017 17:40:26 +0000
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dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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2 * The interactive command entry (editing) function in libcommon
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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3 * will call mygetchar() for its character input. It is supposed
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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4 * to be a blocking wait for input, but in some programs other
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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5 * processing can be done while waiting - for example, check for
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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6 * keypad presses as well. This is the basic version which waits
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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7 * for serial input and nothing else.
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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8 */
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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9
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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10 extern int serial_in_poll();
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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11
dbb54db721d1 target-utils/flash-boot-test written
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12 int
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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13 mygetchar()
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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14 {
dbb54db721d1 target-utils/flash-boot-test written
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15 register int c;
dbb54db721d1 target-utils/flash-boot-test written
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16
dbb54db721d1 target-utils/flash-boot-test written
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17 do
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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18 c = serial_in_poll();
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
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19 while (c < 0);
dbb54db721d1 target-utils/flash-boot-test written
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20 return c;
dbb54db721d1 target-utils/flash-boot-test written
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21 }