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ben-wpan/atrf/tools/atspi-rssi/atspi-rssi.c
Werner Almesberger b7700518d9 atspi-trim: utility to set the crystal trimming capacitors.
- atrf/tools/Makefile: added atspi-trim
- atrf/tools/atspi-trim/Makefile, atrf/tools/atspi-trim/atspi-trim.c: show
  and adjust the capacitors to trim the crystal oscillator
- atrf/tools/atspi-rssi/atspi-rssi.c: removed left-over FROM_DEV and TO_DEV
2010-08-23 21:49:20 -03:00

89 lines
1.8 KiB
C

/*
* atspi-rssi/atspi-rssi.c - ben-wpan AF86RF230 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 <usb.h>
#include <sys/time.h>
#include "at86rf230.h"
#include "atspi/ep0.h"
#include "atspi.h"
static struct timeval t0;
static void sweep(usb_dev_handle *dev)
{
int chan, rssi;
struct timeval t;
for (chan = 11; chan <= 26; chan++) {
atspi_reg_write(dev, REG_PHY_CC_CCA, chan);
/*
* 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(dev, 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 usage(const char *name)
{
fprintf(stderr, "%s sweeps \n", name);
exit(1);
}
int main(int argc, const char **argv)
{
usb_dev_handle *dev;
unsigned long sweeps, i;
char *end;
if (argc != 2)
usage(*argv);
sweeps = strtoul(argv[1], &end, 0);
if (*end)
usage(*argv);
dev = atspi_open();
if (!dev)
return 1;
atspi_reg_write(dev, REG_TRX_STATE, TRX_CMD_TRX_OFF);
/*
* No need to explicitly wait for things to stabilize - going USB-SPI
* is pretty slow, leaving the transceiver more than enough time.
*/
atspi_reg_write(dev, REG_TRX_STATE, TRX_CMD_RX_ON);
gettimeofday(&t0, NULL);
for (i = 0; i != sweeps; i++)
sweep(dev);
atspi_reg_write(dev, REG_TRX_STATE, TRX_CMD_TRX_OFF);
return 0;
}