FreeCalypso > hg > freecalypso-tools
view target-utils/c139explore/mygetchar.c @ 497:74610c4f10f7
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 |
line wrap: on
line source
/* * The interactive command entry (editing) function in libcommon * will call mygetchar() for its character input. It is supposed * to be a blocking wait for input, but in some programs other * processing can be done while waiting - for example, check for * keypad presses as well. This is the basic version which waits * for serial input and nothing else. */ extern int serial_in_poll(); int mygetchar() { register int c; do c = serial_in_poll(); while (c < 0); return c; }