annotate target-utils/flash-boot-test/mygetchar.c @ 213:d5d6992897cf

loadtools/README renamed to README.old, previous README.old to README.older
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 19 May 2017 06:11:27 +0000
parents dbb54db721d1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
197
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * The interactive command entry (editing) function in libcommon
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * will call mygetchar() for its character input. It is supposed
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
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>
parents:
diff changeset
5 * processing can be done while waiting - for example, check for
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * keypad presses as well. This is the basic version which waits
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 * for serial input and nothing else.
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 */
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 extern int serial_in_poll();
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 int
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 mygetchar()
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 {
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 register int c;
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 do
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 c = serial_in_poll();
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 while (c < 0);
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 return c;
dbb54db721d1 target-utils/flash-boot-test written
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 }