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annotate target-utils/helloapp/mygetchar.c @ 114:17b0511b243c

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nuc-fw: continuing lowest-level BSP integration
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Thu, 24 Oct 2013 02:47:14 +0000
parents 40f607bb0a2c
children
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40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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2 * The interactive command entry (editing) function in libcommon
40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 1
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3 * will call mygetchar() for its character input. It is supposed
40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 1
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4 * to be a blocking wait for input, but in some programs other
40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 1
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5 * processing can be done while waiting - for example, check for
40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 1
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6 * keypad presses as well. This is the basic version which waits
40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 1
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7 * for serial input and nothing else.
40f607bb0a2c target-utils refactored
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 1
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8 */
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9
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10 extern int serial_in_poll();
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11
11
40f607bb0a2c target-utils refactored
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12 int
40f607bb0a2c target-utils refactored
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13 mygetchar()
1
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14 {
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15 register int c;
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16
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17 do
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18 c = serial_in_poll();
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19 while (c < 0);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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20 return c;
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21 }