FreeCalypso > hg > freecalypso-tools
view target-utils/libtiffs/rdinmem.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 | 9214118ae941 |
children |
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#include <sys/types.h> #include "types.h" #include "struct.h" #include "globals.h" #include "macros.h" tiffs_read_into_ram(pathname, buf, maxlen, lenrtn) char *pathname; u8 *buf; size_t maxlen, *lenrtn; { int stat, cont; u8 *chunk_start; size_t chunk_size, real_len, roomleft; stat = tiffs_find_file(pathname, &chunk_start, &chunk_size, &cont); if (stat < 0) return(stat); if (chunk_size > maxlen) { toobig: printf("Error: %s is bigger than the read buffer\n", pathname); return(-1); } real_len = chunk_size; memcpy(buf, chunk_start, chunk_size); buf += chunk_size; roomleft = maxlen - chunk_size; while (cont) { stat = tiffs_get_segment(cont, &chunk_start, &chunk_size, &cont); if (stat < 0) return(stat); if (chunk_size > roomleft) goto toobig; real_len += chunk_size; memcpy(buf, chunk_start, chunk_size); buf += chunk_size; roomleft -= chunk_size; } if (lenrtn) *lenrtn = real_len; return(0); }