view target-utils/simtest/poll.c @ 587:5b88ba62b9ae

doc/Rvinterf-tools: rvinterf -P option documented
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 03 Feb 2020 07:56:57 +0000
parents d96ea6ae6aa5
children
line wrap: on
line source

#include <sys/types.h>
#include <strings.h>
#include "types.h"
#include "simregs.h"

extern int serial_in_poll();

int enable_poll;

void
poll_sim_rx()
{
	u32 drx;

	if (SIMREGS.stat & SIM_STAT_FEMPTY)
		return;
	drx = SIMREGS.drx & 0xFF;
	printf("%02X ", drx);
}

int
mygetchar()
{
	register int c;

	do {
		if (enable_poll)
			poll_sim_rx();
		c = serial_in_poll();
	}
	while (c < 0);
	return c;
}

void
cmd_poll(argbulk)
	char *argbulk;
{
	char *argv[2];

	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
		return;
	if (!strcmp(argv[0], "on"))
		enable_poll = 1;
	else if (!strcmp(argv[0], "off"))
		enable_poll = 0;
	else
		printf("ERROR: \"on\" or \"off\" argument expected\n");
}