FreeCalypso > hg > freecalypso-tools

annotate target-utils/loadagent/mygetchar.c @ 497:74610c4f10f7

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target-utils: added 10 ms delay at the end of abb_power_off() The deosmification of the ABB access code (replacement of osmo_delay_ms() bogus delays with correctly-timed ones, which are significantly shorter) had one annoying side effect: when executing the poweroff command from any of the programs, one last '=' prompt character was being sent (and received by the x86 host) as the Calypso board powers off. With delays being shorter now, the abb_power_off() function was returning and the standalone program's main loop was printing its prompt before the Iota chip fully executed the switch-off sequence! I thought about inserting an endless tight loop at the end of the abb_power_off() function, but the implemented solution of a 10 ms delay is a little nicer IMO because if the DEVOFF operation doesn't happen for some reason in a manual hacking scenario, there won't be an artificial blocker in the form of a tight loop keeping us from further poking around.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 25 May 2019 20:44:05 +0000
parents e7502631a0f9
children
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1 /*
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2 * The interactive command entry (editing) function in libcommon
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3 * will call mygetchar() for its character input. It is supposed
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4 * to be a blocking wait for input, but in some programs other
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5 * processing can be done while waiting - for example, check for
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6 * keypad presses as well. This is the basic version which waits
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7 * for serial input and nothing else.
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8 */
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10 extern int serial_in_poll();
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12 int
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13 mygetchar()
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14 {
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15 register int c;
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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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20 return c;
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21 }