mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-08-27 21:48:58 +03:00
- sweep.h (print_sweep), atrf-path.c (print_sweep): make global, for sharing with gui.c - gui.c (gui): dump the sweep results to standard output if "D" is pressed
430 lines
8.5 KiB
C
430 lines
8.5 KiB
C
/*
|
|
* atrf-path/atrf-path.c - Measure path characteristics
|
|
*
|
|
* Written 2011 by Werner Almesberger
|
|
* Copyright 2011 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 <unistd.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
|
|
#include "at86rf230.h"
|
|
|
|
#include "misctxrx.h"
|
|
#include "cwtest.h"
|
|
#include "atrf.h"
|
|
|
|
#include "gui.h"
|
|
#include "sweep.h"
|
|
|
|
|
|
#define DEFAULT_TRIM 8
|
|
#define DEFAULT_POWER 15
|
|
|
|
|
|
static void set_channel(struct atrf_dsc *dsc, int chan)
|
|
{
|
|
atrf_reg_write(dsc, REG_PHY_CC_CCA, (1 << CCA_MODE_SHIFT) | chan);
|
|
}
|
|
|
|
|
|
static void init_common(struct atrf_dsc *dsc, int trim)
|
|
{
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
|
|
atrf_reg_write(dsc, REG_XOSC_CTRL,
|
|
(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
|
|
atrf_set_clkm(dsc, 0);
|
|
}
|
|
|
|
|
|
static void init_tx(struct atrf_dsc *dsc, int trim, int power)
|
|
{
|
|
init_common(dsc, trim);
|
|
set_power_step(dsc, power, 0);
|
|
}
|
|
|
|
|
|
static void init_rx(struct atrf_dsc *dsc, int trim)
|
|
{
|
|
init_common(dsc, trim);
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON);
|
|
}
|
|
|
|
|
|
static double rssi_to_dBm(double rssi)
|
|
{
|
|
return -91+3*(rssi-1);
|
|
}
|
|
|
|
|
|
static void sample(const struct sweep *sweep, int cont_tx,
|
|
struct sample *res, int first)
|
|
{
|
|
static int need_init = 1;
|
|
int i, rssi;
|
|
int sum = 0, min = -1, max = -1;
|
|
double offset = tx_power_step2dBm(sweep->tx, sweep->power);
|
|
|
|
/*
|
|
* For the 230, we don't have reset-less exit from test mode (yet ?) and
|
|
* need to set up things from scratch:
|
|
*
|
|
* init_tx(sweep->tx, sweep->trim_tx, sweep->power);
|
|
* set_channel(sweep->tx, chan);
|
|
* usleep(155); / * table 7-2, tTR19 * /
|
|
*/
|
|
if (first || need_init) {
|
|
cw_test_begin(sweep->tx, cont_tx);
|
|
need_init = 0;
|
|
} else {
|
|
cw_test_resume(sweep->tx);
|
|
}
|
|
/* table 7-1, tTR10, doubling since it's a "typical" value */
|
|
usleep(2*16);
|
|
|
|
for (i = 0; i != sweep->samples; i++) {
|
|
/* according to 8.3.2, PHY_RSSI is updated every 2 us */
|
|
usleep(2);
|
|
|
|
rssi = atrf_reg_read(sweep->rx, REG_PHY_RSSI) & RSSI_MASK;
|
|
sum += rssi;
|
|
if (min == -1 || rssi < min)
|
|
min = rssi;
|
|
if (rssi > max)
|
|
max = rssi;
|
|
}
|
|
|
|
cw_test_end(sweep->tx);
|
|
|
|
res->avg = rssi_to_dBm((double) sum/sweep->samples)-offset;
|
|
res->min = rssi_to_dBm(min)-offset;
|
|
res->max = rssi_to_dBm(max)-offset;
|
|
}
|
|
|
|
|
|
static int do_half_sweep(const struct sweep *sweep, int cont_tx,
|
|
struct sample *res)
|
|
{
|
|
int i, chan;
|
|
int fail = 0;
|
|
|
|
if (sweep->cont_tx && sweep->cont_tx != cont_tx)
|
|
return 0;
|
|
chan = 11;
|
|
for (i = 0; i != N_CHAN; i++) {
|
|
set_channel(sweep->rx, chan);
|
|
set_channel(sweep->tx, chan);
|
|
usleep(155); /* table 7-2, tTR19 */
|
|
|
|
sample(sweep, cont_tx, res, chan == 11 && !sweep->cont_tx);
|
|
if (res->avg > sweep->max[i])
|
|
fail = 1;
|
|
if (!fail && res->avg < sweep->min[i])
|
|
fail = -1;
|
|
|
|
res += 2;
|
|
chan++;
|
|
}
|
|
return fail;
|
|
}
|
|
|
|
|
|
int do_sweep(const struct sweep *sweep, struct sample *res)
|
|
{
|
|
int fail1, fail2;
|
|
|
|
fail1 = do_half_sweep(sweep, CONT_TX_M500K, res);
|
|
fail2 = do_half_sweep(sweep, CONT_TX_P500K, res+1);
|
|
if (fail1 > 0 || fail2 > 0)
|
|
return 1;
|
|
if (fail1 < 0 || fail2 < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
void print_sweep(const struct sweep *sweep, const struct sample *res)
|
|
{
|
|
int chan;
|
|
|
|
for (chan = 11; chan <= 26; chan++) {
|
|
if (sweep->cont_tx != CONT_TX_P500K)
|
|
printf("%.1f %.2f %.0f %.0f\n",
|
|
2350+5*chan-0.5, res->avg, res->min, res->max);
|
|
res++;
|
|
if (sweep->cont_tx != CONT_TX_M500K)
|
|
printf("%.1f %.2f %.0f %.0f\n",
|
|
2350+5*chan+0.5, res->avg, res->min, res->max);
|
|
res++;
|
|
}
|
|
}
|
|
|
|
|
|
static int do_sweeps(const struct sweep *sweep, int sweeps)
|
|
{
|
|
struct sample res[N_CHAN*2]; /* 2 offsets per channel */
|
|
int decision = 0, fail, pass;
|
|
int i;
|
|
|
|
/*
|
|
* The pass/fail logic here goes as follows:
|
|
*
|
|
* Pass if and only if all sweeps pass.
|
|
* Fail if and only if all sweeps are below the minimum.
|
|
* Make no decision if any sweeps were above the maximum or if there
|
|
* was a mixture of pass and fail.
|
|
*/
|
|
|
|
for (i = 0; i != sweeps; i++) {
|
|
if (i)
|
|
putchar('\n');
|
|
fail = do_sweep(sweep, res);
|
|
print_sweep(sweep, res);
|
|
pass = fail < 0 ? -1 : fail > 0 ? 0 : 1;
|
|
if (!i)
|
|
decision = pass;
|
|
else {
|
|
if (pass != decision)
|
|
decision = 0;
|
|
}
|
|
}
|
|
return decision;
|
|
}
|
|
|
|
|
|
static int do_read_profile(const char *name, struct sweep *sweep)
|
|
{
|
|
FILE *file;
|
|
char buf[300];
|
|
int got;
|
|
char *p;
|
|
double min = MIN_DIFF, max = MAX_DIFF;
|
|
int n = 0;
|
|
|
|
file = fopen(name, "r");
|
|
if (!file) {
|
|
perror(name);
|
|
exit(1);
|
|
}
|
|
while (fgets(buf, sizeof(buf), file)) {
|
|
p = strchr(buf, '\n');
|
|
if (p)
|
|
*p = 0;
|
|
p = strchr(buf, '#');
|
|
if (p)
|
|
*p = 0;
|
|
for (p = buf; *p && isspace(*p); p++);
|
|
if (!*p)
|
|
continue;
|
|
got = sscanf(buf, "%lf %lf", &min, &max);
|
|
switch (got) {
|
|
case 0:
|
|
fprintf(stderr, "can't parse \"%s\"\n", buf);
|
|
exit(1);
|
|
case 1:
|
|
max = MAX_DIFF;
|
|
/* fall through */
|
|
case 2:
|
|
if (min < MIN_DIFF) {
|
|
fprintf(stderr, "minimum is %g dBm\n",
|
|
MIN_DIFF);
|
|
exit(1);
|
|
}
|
|
if (max > MAX_DIFF) {
|
|
fprintf(stderr, "maximum is %g dBm\n",
|
|
MAX_DIFF);
|
|
exit(1);
|
|
}
|
|
if (min > max) {
|
|
fprintf(stderr, "lower bound > upper bound\n");
|
|
exit(1);
|
|
}
|
|
if (n == N_CHAN) {
|
|
fprintf(stderr, "too many channels\n");
|
|
exit(1);
|
|
}
|
|
sweep->min[n] = min;
|
|
sweep->max[n] = max;
|
|
n++;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
fclose(file);
|
|
return n;
|
|
}
|
|
|
|
|
|
static void read_profile(const char *name, struct sweep *sweep)
|
|
{
|
|
int n = 0;
|
|
|
|
if (name)
|
|
n = do_read_profile(name, sweep);
|
|
|
|
while (n != N_CHAN) {
|
|
sweep->min[n] = MIN_DIFF;
|
|
sweep->max[n] = MAX_DIFF;
|
|
n++;
|
|
}
|
|
}
|
|
|
|
|
|
static void usage(const char *name)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: %s common_args [[sweeps] samples]\n"
|
|
|
|
#ifdef HAVE_GFX
|
|
"%6s %s -g common_args [[sweeps] samples]\n"
|
|
#endif
|
|
"\n"
|
|
" common args: [-p power] [-P profile] [-t trim_tx [-t trim_rx]]\n"
|
|
" [-T offset] driver_tx[:arg] driver_rx[:arg]\n\n"
|
|
|
|
#ifdef HAVE_GFX
|
|
" -g display results graphically\n"
|
|
#endif
|
|
" -p power transmit power, 0 to 15 (default %d)\n"
|
|
" -P profile load profile for pass/fail decisions\n"
|
|
" -t trim trim capacitor, 0 to 15 (default %d)\n"
|
|
" -T offset constant wave offset in MHz, -0.5 or +0.5 (default: scan both)\n"
|
|
|
|
, name,
|
|
#ifdef HAVE_GFX
|
|
"", name,
|
|
#endif
|
|
DEFAULT_POWER, DEFAULT_TRIM);
|
|
|
|
exit(1);
|
|
}
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
const char *tx_drv, *rx_drv;
|
|
struct sweep sweep = {
|
|
.trim_tx = -1,
|
|
.trim_rx = DEFAULT_TRIM,
|
|
.cont_tx = 0,
|
|
.samples = 1,
|
|
};
|
|
int graphical = 0;
|
|
int power = DEFAULT_POWER;
|
|
const char *profile = NULL;
|
|
int sweeps = 1;
|
|
unsigned long tmp;
|
|
char *end;
|
|
int c, decision;
|
|
|
|
while ((c = getopt(argc, argv, "gp:P:t:T:")) != EOF)
|
|
switch (c) {
|
|
case'g':
|
|
graphical = 1;
|
|
sweeps = 0;
|
|
break;
|
|
case 'p':
|
|
tmp = strtoul(optarg, &end, 0);
|
|
if (*end || tmp > 15)
|
|
usage(*argv);
|
|
power = tmp;
|
|
break;
|
|
case 'P':
|
|
profile = optarg;
|
|
break;
|
|
case 't':
|
|
tmp = strtoul(optarg, &end, 0);
|
|
if (*end || tmp > 15)
|
|
usage(*argv);
|
|
if (sweep.trim_tx == -1)
|
|
sweep.trim_tx = tmp;
|
|
else
|
|
sweep.trim_rx = tmp;
|
|
break;
|
|
case 'T':
|
|
if (!strcmp(optarg, "-0.5"))
|
|
sweep.cont_tx = CONT_TX_M500K;
|
|
else if (!strcmp(optarg, "+0.5"))
|
|
sweep.cont_tx = CONT_TX_P500K;
|
|
else
|
|
usage(*argv);
|
|
break;
|
|
default:
|
|
usage(*argv);
|
|
}
|
|
|
|
if (sweep.trim_tx == -1)
|
|
sweep.trim_tx = DEFAULT_TRIM;
|
|
|
|
switch (argc-optind) {
|
|
case 4:
|
|
sweep.samples = strtoul(argv[optind+3], &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
/* fall through */
|
|
case 3:
|
|
sweeps = strtoul(argv[optind+2], &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
if (argc-optind == 3) {
|
|
sweep.samples = sweeps;
|
|
sweeps = graphical ? 0 : 1;
|
|
}
|
|
/* fall through */
|
|
case 2:
|
|
tx_drv = argv[optind];
|
|
rx_drv = argv[optind+1];
|
|
break;
|
|
default:
|
|
usage(*argv);
|
|
}
|
|
|
|
read_profile(profile, &sweep);
|
|
|
|
sweep.tx = atrf_open(tx_drv);
|
|
if (!sweep.tx)
|
|
return 1;
|
|
sweep.rx = atrf_open(rx_drv);
|
|
if (!sweep.rx)
|
|
return 1;
|
|
|
|
sweep.power = 15-power;
|
|
init_rx(sweep.rx, sweep.trim_rx);
|
|
init_tx(sweep.tx, sweep.trim_tx, sweep.power);
|
|
if (graphical)
|
|
decision = gui(&sweep, sweeps);
|
|
else
|
|
decision = do_sweeps(&sweep, sweeps);
|
|
|
|
switch (decision) {
|
|
case -1:
|
|
printf("#FAIL\n");
|
|
break;
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
printf("#PASS\n");
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
atrf_reg_write(sweep.tx, REG_TRX_STATE, TRX_CMD_TRX_OFF);
|
|
atrf_reg_write(sweep.rx, REG_TRX_STATE, TRX_CMD_TRX_OFF);
|
|
|
|
atrf_close(sweep.tx);
|
|
atrf_close(sweep.rx);
|
|
|
|
return 0;
|
|
}
|