mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-16 22:22:49 +02:00
22288a2932
- atrf-txrx.c (test_mode, usage, main): optionally run a shell command while in test mode - atrf-txrx.c (usage): explain all parameters
325 lines
7.4 KiB
C
325 lines
7.4 KiB
C
/*
|
|
* atrf-txrx/atrf-txrx.c - ben-wpan AT86RF230 TX/RX
|
|
*
|
|
* 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 <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <math.h>
|
|
#include <signal.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include "at86rf230.h"
|
|
#include "atrf.h"
|
|
#include "misctxrx.h"
|
|
|
|
|
|
/*
|
|
* According to IEEE 802.15.4-2003 section E.2.6, channel 15 is the only
|
|
* channel that falls into the 802.11 guard bands in North America an Europe.
|
|
*/
|
|
|
|
#define DEFAULT_CHANNEL 15 /* channel 15, 2425 MHz */
|
|
|
|
/*
|
|
* Transmit power, dBm. IEEE 802.15.4-2003 section E.3.1.3 specifies a transmit
|
|
* power of 0 dBm for IEEE 802.15.4. We assume an antenna gain of 3 dB or
|
|
* better.
|
|
*/
|
|
|
|
#define DEFAULT_POWER -3.2 /* transmit power, dBm */
|
|
|
|
|
|
static double tx_pwr[] = {
|
|
3.0, 2.6, 2.1, 1.6,
|
|
1.1, 0.5, -0.2, -1.2,
|
|
-2.2, -3.2, -4.2, -5.2,
|
|
-7.2, -9.2, -12.2, -17.2
|
|
};
|
|
|
|
|
|
static volatile int run = 1;
|
|
|
|
|
|
static struct atrf_dsc *init_txrx(int trim)
|
|
{
|
|
struct atrf_dsc *dsc;
|
|
|
|
dsc = atrf_open();
|
|
if (!dsc)
|
|
exit(1);
|
|
|
|
atrf_reset_rf(dsc);
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
|
|
#ifdef HAVE_USB /* @@@ yeah, ugly */
|
|
atrf_reg_write(dsc, REG_XOSC_CTRL,
|
|
(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
|
|
#else
|
|
atrf_reg_write(dsc, REG_XOSC_CTRL, XTAL_MODE_EXT << XTAL_MODE_SHIFT);
|
|
#endif
|
|
atrf_reg_write(dsc, REG_TRX_CTRL_0, 0); /* disable CLKM */
|
|
|
|
(void) atrf_reg_read(dsc, REG_IRQ_STATUS);
|
|
|
|
return dsc;
|
|
}
|
|
|
|
|
|
static void set_channel(struct atrf_dsc *dsc, int channel)
|
|
{
|
|
atrf_reg_write(dsc, REG_PHY_CC_CCA, (1 << CCA_MODE_SHIFT) | channel);
|
|
}
|
|
|
|
|
|
static void set_power(struct atrf_dsc *dsc, double power, int crc)
|
|
{
|
|
int n;
|
|
|
|
for (n = 0; n != sizeof(tx_pwr)/sizeof(*tx_pwr)-1; n++)
|
|
if (tx_pwr[n] <= power)
|
|
break;
|
|
if (fabs(tx_pwr[n]-power) > 0.01)
|
|
fprintf(stderr, "TX power %.1f dBm\n", tx_pwr[n]);
|
|
atrf_reg_write(dsc, REG_PHY_TX_PWR, (crc ? TX_AUTO_CRC_ON : 0) | n);
|
|
}
|
|
|
|
|
|
static void receive(struct atrf_dsc *dsc)
|
|
{
|
|
uint8_t buf[MAX_PSDU+1]; /* PSDU+LQI */
|
|
int n, ok, i;
|
|
uint8_t ed, lqi;
|
|
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON);
|
|
/*
|
|
* 180 us, according to AVR2001 section 4.2. We time out after
|
|
* nominally 200 us.
|
|
*/
|
|
wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 10, 20);
|
|
|
|
fprintf(stderr, "Ready.\n");
|
|
wait_for_interrupt(dsc, IRQ_TRX_END, IRQ_TRX_END | IRQ_RX_START,
|
|
10, 0);
|
|
if (!run)
|
|
return;
|
|
|
|
n = atrf_buf_read(dsc, buf, sizeof(buf));
|
|
if (n < 0)
|
|
exit(1);
|
|
if (n < 3) {
|
|
fprintf(stderr, "%d bytes received\n", n);
|
|
exit(1);
|
|
}
|
|
ed = atrf_reg_read(dsc, REG_PHY_ED_LEVEL);
|
|
ok = !!(atrf_reg_read(dsc, REG_PHY_RSSI) & RX_CRC_VALID);
|
|
lqi = buf[n-1];
|
|
fprintf(stderr, "%d bytes payload, CRC %s, LQI %u, ED %d dBm\n",
|
|
n-3, ok ? "OK" : "BAD", lqi, -91+ed);
|
|
for (i = 0; i != n-3; i++)
|
|
putchar(buf[i] < ' ' || buf[i] > '~' ? '?' : buf[i]);
|
|
putchar('\n');
|
|
}
|
|
|
|
|
|
static void transmit(struct atrf_dsc *dsc, const char *msg, int times)
|
|
{
|
|
uint8_t buf[MAX_PSDU];
|
|
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
|
|
/*
|
|
* 180 us, according to AVR2001 section 4.3. We time out after
|
|
* nominally 200 us.
|
|
*/
|
|
wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 10, 20);
|
|
|
|
/*
|
|
* We need to copy the message to append the CRC placeholders.
|
|
*/
|
|
strcpy((void *) buf, msg);
|
|
atrf_buf_write(dsc, buf, strlen(msg)+2);
|
|
|
|
while (run && times--) {
|
|
/* @@@ should wait for clear channel */
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START);
|
|
|
|
/* wait up to 10 ms (nominally) */
|
|
wait_for_interrupt(dsc, IRQ_TRX_END,
|
|
IRQ_TRX_END | IRQ_PLL_LOCK, 10, 1000);
|
|
}
|
|
}
|
|
|
|
|
|
static int test_mode(struct atrf_dsc *dsc, uint8_t cont_tx, const char *cmd)
|
|
{
|
|
atrf_buf_write(dsc, "", 1);
|
|
atrf_reg_write(dsc, REG_CONT_TX_0, CONT_TX_MAGIC);
|
|
atrf_reg_write(dsc, REG_CONT_TX_1, cont_tx);
|
|
int status = 0;
|
|
|
|
if (!atrf_test_mode(dsc)) {
|
|
atrf_reset_rf(dsc);
|
|
fprintf(stderr, "device does not support test mode\n");
|
|
exit(1);
|
|
}
|
|
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
|
|
wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 10, 20);
|
|
|
|
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START);
|
|
|
|
if (cmd)
|
|
status = system(cmd);
|
|
else {
|
|
while (run)
|
|
sleep(1);
|
|
}
|
|
|
|
atrf_reset_rf(dsc);
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
static void die(int sig)
|
|
{
|
|
run = 0;
|
|
}
|
|
|
|
|
|
static void usage(const char *name)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: %s [-c channel|-f freq] [-p power] [-t trim] [message [repetitions]]\n"
|
|
" %s [-c channel|-f freq] [-p power] [-t trim] -T offset [command]\n\n"
|
|
" message message string to send (if absent, receive)\n"
|
|
" repetitions number of times the message is sent (default 1)\n"
|
|
" command shell command to run while transmitting (default: wait for\n"
|
|
" SIGINT instead)\n\n"
|
|
" -c channel channel number, 11 to 26 (default %d)\n"
|
|
" -f freq frequency in MHz, 2405 to 2480 (default %d)\n"
|
|
" -p power transmit power, -17.2 to 3.0 dBm (default %.1f)\n"
|
|
" -t trim trim capacitor, 0 to 15 (default 0)\n"
|
|
" -t trim trim capacitor, 0 to 15 (default 0)\n"
|
|
" -T offset test mode. offset is the frequency offset of the constant\n"
|
|
" wave in MHz: -2, -0.5, or +0.5\n"
|
|
, name, name, DEFAULT_CHANNEL, 2405+5*(DEFAULT_CHANNEL-11),
|
|
DEFAULT_POWER);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
int main(int argc, char *const *argv)
|
|
{
|
|
int channel = DEFAULT_CHANNEL;
|
|
double power = DEFAULT_POWER;
|
|
int trim = 0, times = 1;
|
|
uint8_t cont_tx = 0;
|
|
char *end;
|
|
int c, freq;
|
|
int status = 0;
|
|
struct atrf_dsc *dsc;
|
|
|
|
while ((c = getopt(argc, argv, "c:f:p:t:T:")) != EOF)
|
|
switch (c) {
|
|
case 'c':
|
|
channel = strtoul(optarg, &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
if (channel < 11 || channel > 26)
|
|
usage(*argv);
|
|
break;
|
|
case 'f':
|
|
freq = strtoul(optarg, &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
if (freq % 5)
|
|
usage(*argv);
|
|
channel = (freq-2405)/5+11;
|
|
if (channel < 11 || channel > 26)
|
|
usage(*argv);
|
|
break;
|
|
case 'p':
|
|
power = strtod(optarg, &end);
|
|
if (*end)
|
|
usage(*argv);
|
|
break;
|
|
case 't':
|
|
trim = strtoul(optarg, &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
if (trim > 15)
|
|
usage(*argv);
|
|
break;
|
|
case 'T':
|
|
if (!strcmp(optarg, "-2"))
|
|
cont_tx = CONT_TX_M2M;
|
|
else if (!strcmp(optarg, "-0.5"))
|
|
cont_tx = CONT_TX_M500K;
|
|
else if (!strcmp(optarg, "+0.5"))
|
|
cont_tx = CONT_TX_P500K;
|
|
else
|
|
usage(*argv);
|
|
break;
|
|
default:
|
|
usage(*argv);
|
|
}
|
|
|
|
signal(SIGINT, die);
|
|
|
|
switch (argc-optind) {
|
|
case 0:
|
|
dsc = init_txrx(trim);
|
|
set_channel(dsc, channel);
|
|
if (!cont_tx)
|
|
receive(dsc);
|
|
else {
|
|
set_power(dsc, power, 0);
|
|
status = test_mode(dsc, cont_tx, NULL);
|
|
}
|
|
break;
|
|
case 2:
|
|
if (cont_tx)
|
|
usage(*argv);
|
|
times = strtoul(argv[optind+1], &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
/* fall through */
|
|
case 1:
|
|
dsc = init_txrx(trim);
|
|
set_channel(dsc, channel);
|
|
if (!cont_tx) {
|
|
set_power(dsc, power, 1);
|
|
transmit(dsc, argv[optind], times);
|
|
} else {
|
|
set_power(dsc, power, 0);
|
|
status = test_mode(dsc, cont_tx, argv[optind]);
|
|
}
|
|
break;
|
|
default:
|
|
usage(*argv);
|
|
}
|
|
|
|
atrf_close(dsc);
|
|
|
|
if (status) {
|
|
if (WIFEXITED(status))
|
|
return WEXITSTATUS(status);
|
|
if (WIFSIGNALED(status))
|
|
raise(WTERMSIG(status));
|
|
fprintf(stderr, "unexpected exit status %d\n", status);
|
|
abort();
|
|
}
|
|
return 0;
|
|
}
|