view rvinterf/lowlevel/format_fc.c @ 407:19e5a3e2f9c0

fcup-settime: moved time() retrieval a little closer to the output A fundamental problem with all simple time transfer tools is that there is always some delay between the time retrieval on the source system and that transmitted time being set on the destination, and the resulting time on the destination system is off by that delay amount. This delay cannot be fully eliminated when working in a simple environment like ours, but we should make our best effort to minimize it. In the present case, moving the atinterf_init() call before the time() retrieval should make a teensy-tiny improvement.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Aug 2018 21:52:17 +0000
parents e7502631a0f9
children 4e243402f453
line wrap: on
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/*
 * This module has been split off from format.c; it implements the decoding
 * of those Rx packet types which have been invented in FreeCalypso.
 */

#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include "../include/pktmux.h"
#include "../include/limits.h"

extern u_char rxpkt[];
extern size_t rxpkt_len;

static char fmtbuf[MAX_PKT_FROM_TARGET*8];	/* size it generously */

void
print_ati_output()
{
	int i, c;
	char *dp;

	dp = fmtbuf;
	strcpy(dp, "ATI: ");
	dp += 5;
	for (i = 1; i < rxpkt_len; i++) {
		c = rxpkt[i];
		if (c & 0x80) {
			*dp++ = 'M';
			*dp++ = '-';
			c &= 0x7F;
		}
		if (c < 0x20) {
			*dp++ = '^';
			*dp++ = c + '@';
		} else if (c == 0x7F) {
			*dp++ = '^';
			*dp++ = '?';
		} else
			*dp++ = c;
	}
	*dp = '\0';
	output_line(fmtbuf);
}

void
print_fc_lld_msg()
{
	int i, c;
	char *dp;

	dp = fmtbuf;
	strcpy(dp, "LLD: ");
	dp += 5;
	for (i = 1; i < rxpkt_len; i++) {
		c = rxpkt[i];
		if (c & 0x80) {
			*dp++ = 'M';
			*dp++ = '-';
			c &= 0x7F;
		}
		if (c < 0x20) {
			*dp++ = '^';
			*dp++ = c + '@';
		} else if (c == 0x7F) {
			*dp++ = '^';
			*dp++ = '?';
		} else
			*dp++ = c;
	}
	*dp = '\0';
	output_line(fmtbuf);
}

void
print_tch_output_raw()
{
	int i;
	char *dp;

	dp = fmtbuf;
	strcpy(dp, "TCH:");
	dp += 4;
	for (i = 1; i < rxpkt_len; i++) {
		sprintf(dp, " %02X", rxpkt[i]);
		dp += 3;
	}
	*dp = '\0';
	output_line(fmtbuf);
}

void
report_extui_packet()
{
	sprintf(fmtbuf, "LCD OUT: row %u col %u-%u", rxpkt[1], rxpkt[2],
		rxpkt[2] + (rxpkt_len - 3) / 2 - 1);
	output_line(fmtbuf);
}