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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line source

#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);
}