mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-19 11:18:26 +02:00
4df6d2c2f9
- tools/atspi-rssi/atspi-rssi.c: removed unnecessary inclusion of atspi/ep0.h - tools/atspi-rssi/atspi-rssi.c (sweep): instead of fixed delay, wait for the PLL lock interrupt - tools/atspi-rssi/atspi-rssi.c (die, main): catch SIGINT to exit cleanly - tools/atspi-rssi/atspi-rssi.c (main): shut down properly when done - tools/atspi-rssi/atspi-rssi.c (usage): print "usage:" before the program's name
102 lines
2.0 KiB
C
102 lines
2.0 KiB
C
/*
|
|
* atspi-rssi/atspi-rssi.c - ben-wpan AT86RF230 spectrum scan
|
|
*
|
|
* Written 2010 by Werner Almesberger
|
|
* Copyright 2010 Werner Almesberger
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "at86rf230.h"
|
|
#include "atspi.h"
|
|
#include "misctxrx.h"
|
|
|
|
|
|
static struct timeval t0;
|
|
static volatile int run = 1;
|
|
|
|
|
|
static void sweep(struct atspi_dsc *dsc)
|
|
{
|
|
int chan, rssi;
|
|
struct timeval t;
|
|
|
|
for (chan = 11; chan <= 26; chan++) {
|
|
atspi_reg_write(dsc, REG_PHY_CC_CCA, chan);
|
|
/* 150 us, according to AVR2001 section 3.5 */
|
|
wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 10, 20);
|
|
|
|
/*
|
|
* No need to explicitly wait for the PPL lock - going USB-SPI
|
|
* is pretty slow, leaving the transceiver plenty of time.
|
|
*/
|
|
gettimeofday(&t, NULL);
|
|
rssi = atspi_reg_read(dsc, REG_PHY_RSSI) & RSSI_MASK;
|
|
t.tv_sec -= t0.tv_sec;
|
|
t.tv_usec -= t0.tv_usec;
|
|
printf("%d %f %d\n",
|
|
2405+(chan-11)*5,
|
|
(double) t.tv_sec+t.tv_usec/1000000.0,
|
|
-91+3*(rssi-1));
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
|
|
static void die(int sig)
|
|
{
|
|
run = 0;
|
|
}
|
|
|
|
|
|
static void usage(const char *name)
|
|
{
|
|
fprintf(stderr, "usage: %s sweeps \n", name);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
int main(int argc, const char **argv)
|
|
{
|
|
struct atspi_dsc *dsc;
|
|
unsigned long sweeps, i;
|
|
char *end;
|
|
|
|
if (argc != 2)
|
|
usage(*argv);
|
|
sweeps = strtoul(argv[1], &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
|
|
signal(SIGINT, die);
|
|
|
|
dsc = atspi_open();
|
|
if (!dsc)
|
|
return 1;
|
|
|
|
atspi_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
|
|
atspi_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON);
|
|
/*
|
|
* We'll wait for the PLL lock after selecting the channel.
|
|
*/
|
|
|
|
gettimeofday(&t0, NULL);
|
|
for (i = 0; run && i != sweeps; i++)
|
|
sweep(dsc);
|
|
|
|
atspi_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
|
|
|
|
atspi_close(dsc);
|
|
|
|
return 0;
|
|
}
|