mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-05 12:34:05 +02:00
b4a6e8ef46
- include/misctxrx.h (wait_for_interrupt), lib/misctxrx.c (wait_for_interrupt): replaced sleep_us*timeout limiting mechanism with a single timeout value in milliseconds - lib/misctxrx.c (wait_for_interrupt): use atrf_interrupt_wait instead of polling - lib/misctxrx.c (wait_for_interrupt): cleaned up control flow - lib/misctxrx.c (run, die, wait_for_interrupt): renamed variable "run" to more specific "sigint" - atrf-txrx/atrf-txrx.c (ping_rx, ping): pass timeout in milliseconds, not deciseconds - atrf-rssi/atrf-rssi.c (sweep), atrf-rssi/gui.c (sweep), atrf-txrx/atrf-txrx.c (init_txrx, receive_message, receive_pcap, receive, transmit, transmit_pattern, ping_tx, ping_rx), atrf-xmit/atrf-xmit.c (init_tx, init_rx, xfer_one), lib/cwtest.c (enter_test_mode_230, start_test_mode_231): updated use of wait_for_interrupt
665 lines
14 KiB
C
665 lines
14 KiB
C
/*
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* atrf-txrx/atrf-txrx.c - ben-wpan AT86RF230 TX/RX
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*
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* Written 2010-2011 by Werner Almesberger
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* Copyright 2010-2011 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include <sys/time.h>
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#include "at86rf230.h"
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#include "atrf.h"
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#include "misctxrx.h"
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#include "cwtest.h"
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#include "pcap.h"
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/*
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* According to IEEE 802.15.4-2003 section E.2.6, channel 15 is the only
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* channel that falls into the 802.11 guard bands in North America an Europe.
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*/
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#define DEFAULT_CHANNEL 15 /* channel 15, 2425 MHz */
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#define DEFAULT_TRIM 8 /* trim range is 0-15, see also ECN0002 */
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/*
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* Transmit power, dBm. IEEE 802.15.4-2003 section E.3.1.3 specifies a transmit
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* power of 0 dBm for IEEE 802.15.4. We assume an antenna gain of 3 dB or
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* better.
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*/
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#define DEFAULT_POWER -3.2 /* transmit power, dBm */
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struct ping {
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uint32_t seq; /* sequence number from originator, > 0 */
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uint32_t ack; /* last sequence number received, 0 if none */
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uint8_t pad[117]; /* pad to 127 bytes */
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uint16_t crc;
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} __attribute__((__packed__));
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enum rx_res {
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rx_exit,
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rx_good,
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rx_bad,
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rx_timeout,
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};
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static volatile int run = 1;
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/*
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* clkm: 0 disable CLKM
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* >0 output 2^(clkm-1) MHz signal
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*/
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static struct atrf_dsc *init_txrx(const char *driver, int trim, unsigned mhz)
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{
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struct atrf_dsc *dsc;
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dsc = atrf_open(driver);
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if (!dsc)
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exit(1);
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atrf_reset_rf(dsc);
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
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#if 1 // def HAVE_USB /* @@@ yeah, ugly */
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atrf_reg_write(dsc, REG_XOSC_CTRL,
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(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
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#else
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atrf_reg_write(dsc, REG_XOSC_CTRL, XTAL_MODE_EXT << XTAL_MODE_SHIFT);
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#endif
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if (!atrf_set_clkm(dsc, mhz))
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if (mhz) {
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atrf_close(dsc);
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exit(1);
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}
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/* We want to see all interrupts, not only the ones we're expecting. */
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atrf_reg_write(dsc, REG_IRQ_MASK, 0xff);
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flush_interrupts(dsc);
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if (atrf_identify(dsc) == artf_at86rf231)
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wait_for_interrupt(dsc, IRQ_CCA_ED_DONE, IRQ_CCA_ED_DONE, 1);
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/* according to table 7-1, 37 us max */
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return dsc;
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}
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static void set_channel(struct atrf_dsc *dsc, int channel)
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{
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atrf_reg_write(dsc, REG_PHY_CC_CCA, (1 << CCA_MODE_SHIFT) | channel);
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}
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static void set_rate(struct atrf_dsc *dsc, uint8_t rate)
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{
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if (!rate)
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return;
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switch (atrf_identify(dsc)) {
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case artf_at86rf230:
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fprintf(stderr, "AT86RF230 only supports 250 kbps\n");
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break;
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case artf_at86rf231:
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atrf_reg_write(dsc, REG_TRX_CTRL_2, rate);
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break;
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default:
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abort();
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}
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}
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static void receive_message(struct atrf_dsc *dsc)
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{
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uint8_t buf[MAX_PSDU+1]; /* PSDU+LQI */
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int n, ok, i;
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uint8_t ed, lqi;
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fprintf(stderr, "Ready.\n");
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wait_for_interrupt(dsc, IRQ_TRX_END,
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IRQ_TRX_END | IRQ_RX_START | IRQ_AMI, 0);
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if (!run)
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return;
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n = atrf_buf_read(dsc, buf, sizeof(buf));
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if (n < 0)
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exit(1);
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if (n < 3) {
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fprintf(stderr, "%d bytes received\n", n);
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exit(1);
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}
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ed = atrf_reg_read(dsc, REG_PHY_ED_LEVEL);
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ok = !!(atrf_reg_read(dsc, REG_PHY_RSSI) & RX_CRC_VALID);
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lqi = buf[n-1];
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fprintf(stderr, "%d bytes payload, CRC %s, LQI %u, ED %d dBm\n",
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n-3, ok ? "OK" : "BAD", lqi, -91+ed);
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for (i = 0; i != n-3; i++)
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putchar(buf[i] < ' ' || buf[i] > '~' ? '?' : buf[i]);
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putchar('\n');
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}
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static void write_pcap_hdr(FILE *file)
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{
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struct pcap_file_header hdr = {
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.magic = PCAP_FILE_MAGIC,
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.version_major = 2,
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.version_minor = 4,
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.thiszone = 0,
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.sigfigs = 0,
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.snaplen = MAX_PSDU,
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.linktype = DLT_IEEE802_15_4
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};
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if (fwrite(&hdr, sizeof(hdr), 1, file) != 1) {
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perror("fwrite");
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exit(1);
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}
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}
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static void write_pcap_rec(FILE *file, const struct timeval *tv,
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const void *buf, int n)
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{
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struct pcap_pkthdr hdr = {
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.ts_sec = tv->tv_sec,
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.ts_usec = tv->tv_usec,
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.caplen = n,
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.len = n
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};
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if (fwrite(&hdr, sizeof(hdr), 1, file) != 1) {
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perror("fwrite");
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exit(1);
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}
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if (fwrite(buf, n, 1, file) != 1) {
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perror("fwrite");
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exit(1);
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}
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}
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static void receive_pcap(struct atrf_dsc *dsc, const char *name)
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{
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FILE *file;
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uint8_t buf[MAX_PSDU+1]; /* PSDU+LQI */
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struct timeval now;
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int n;
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int count = 0;
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file = fopen(name, "w");
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if (!file) {
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perror(name);
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exit(1);
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}
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write_pcap_hdr(file);
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while (run) {
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wait_for_interrupt(dsc,
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IRQ_TRX_END, IRQ_TRX_END | IRQ_RX_START | IRQ_AMI, 0);
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if (!run)
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break;
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gettimeofday(&now, NULL);
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n = atrf_buf_read(dsc, buf, sizeof(buf));
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if (n < 0)
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exit(1);
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if (n < 2) {
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fprintf(stderr, "%d bytes received\n", n);
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continue;
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}
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write_pcap_rec(file, &now, buf, n-1);
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(void) write(2, ".", 1);
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count++;
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}
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if (fclose(file) == EOF) {
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perror(name);
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exit(1);
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}
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fprintf(stderr, "%sreceived %d message%s\n", count ? "\n" : "",
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count, count == 1 ? "" : "s");
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}
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static void receive(struct atrf_dsc *dsc, const char *name)
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{
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON);
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/*
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* 180 us, according to AVR2001 section 4.2. We time out after
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* nominally 200 us.
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*/
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wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 1);
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if (name)
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receive_pcap(dsc, name);
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else
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receive_message(dsc);
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}
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static void transmit(struct atrf_dsc *dsc, const char *msg, int times)
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{
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uint8_t buf[MAX_PSDU];
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
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/*
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* 180 us, according to AVR2001 section 4.3. We time out after
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* nominally 200 us.
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*/
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wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 1);
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/*
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* We need to copy the message to append the CRC placeholders.
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*/
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strcpy((void *) buf, msg);
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atrf_buf_write(dsc, buf, strlen(msg)+2);
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while (run && times--) {
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/* @@@ should wait for clear channel */
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START);
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/* wait up to 10 ms (nominally) */
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wait_for_interrupt(dsc, IRQ_TRX_END,
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IRQ_TRX_END | IRQ_PLL_LOCK, 10);
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}
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}
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static void transmit_pattern(struct atrf_dsc *dsc, double pause_s, int times)
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{
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uint8_t buf[MAX_PSDU];
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uint8_t n = 0;
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int us = fmod(pause_s, 1)*1000000;
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
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/*
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* 180 us, according to AVR2001 section 4.3. We time out after
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* nominally 200 us.
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*/
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wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 1);
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while (run) {
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memset(buf, n, sizeof(buf));
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atrf_buf_write(dsc, buf, sizeof(buf));
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START);
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/* wait up to 10 ms (nominally) */
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wait_for_interrupt(dsc, IRQ_TRX_END,
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IRQ_TRX_END | IRQ_PLL_LOCK, 10);
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if (pause_s >= 1)
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sleep(pause_s);
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if (us)
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usleep(us);
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if (times && !--times)
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break;
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n++;
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}
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}
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static void ping_tx(struct atrf_dsc *dsc, const struct ping *pck)
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{
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
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/*
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* 180 us, according to AVR2001 section 4.3. We time out after
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* nominally 200 us.
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*/
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wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 1);
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atrf_buf_write(dsc, pck, sizeof(*pck));
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START);
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/* wait up to 10 ms (nominally) */
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wait_for_interrupt(dsc, IRQ_TRX_END,
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IRQ_TRX_END | IRQ_PLL_LOCK, 10);
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}
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static enum rx_res ping_rx(struct atrf_dsc *dsc, struct ping *pck, int wait_ms)
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{
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uint8_t irq;
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int n;
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atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON);
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irq = wait_for_interrupt(dsc, IRQ_TRX_END,
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IRQ_TRX_END | IRQ_RX_START | IRQ_PLL_LOCK, wait_ms);
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if (!run)
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return rx_exit;
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if (!irq)
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return rx_timeout;
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n = atrf_buf_read(dsc, pck, sizeof(*pck));
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if (n < 0)
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exit(1);
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if (n != sizeof(*pck)) {
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fprintf(stderr, "%d bytes received\n", n);
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return rx_bad;
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}
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return atrf_reg_read(dsc, REG_PHY_RSSI) & RX_CRC_VALID ?
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rx_good : rx_bad;
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}
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static void ping(struct atrf_dsc *dsc, double max_wait_s, int master)
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{
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static int first = 1;
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struct ping tx_pck = {
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.seq = 0,
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.ack = 0,
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};
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struct ping rx_pck;
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enum rx_res res;
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while (run) {
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tx_pck.seq++;
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if (master || !first) {
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ping_tx(dsc, &tx_pck);
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if (!run)
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break;
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}
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first = 0;
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res = ping_rx(dsc, &rx_pck, master ? max_wait_s*1000 : 0);
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switch (res) {
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case rx_good:
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tx_pck.ack = rx_pck.seq;
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if (tx_pck.seq == rx_pck.ack)
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write(2, ".", 1);
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else
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write(2, "*", 1);
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break;
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case rx_bad:
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write(2, "-", 1);
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break;
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case rx_timeout:
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write(2, "+", 1);
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break;
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case rx_exit:
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return;
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default:
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abort();
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}
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}
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}
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static int test_mode(struct atrf_dsc *dsc, uint8_t cont_tx, const char *cmd)
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{
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int status = 0;
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cw_test_begin(dsc, cont_tx);
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if (cmd)
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status = system(cmd);
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else {
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while (run)
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sleep(1);
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}
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cw_test_end(dsc);
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return status;
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}
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static void die(int sig)
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{
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run = 0;
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}
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static void usage(const char *name)
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{
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fprintf(stderr,
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"usage: %s [common_options] [message [repetitions]]\n"
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" %s [common_options] -E pause_s [repetitions]\n"
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" %s [common_options] -P [max_wait_s]\n"
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" %s [common_options] -T offset [command]\n\n"
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" text message mode:\n"
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" message message string to send (if absent, receive)\n"
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" repetitions number of times the message is sent (default 1)\n\n"
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" PER test mode (transmit only):\n"
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" -E pause_s seconds to pause between frames (floating-point)\n"
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" repetitions number of messages to send (default: infinite)\n\n"
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" Ping-pong mode:\n"
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" -P exchange packets between two stations\n"
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" max_wait_s generate a new packet if no response is received (master)\n\n"
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" constant wave test mode (transmit only):\n"
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" -T offset test mode. offset is the frequency offset of the constant\n"
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" wave in MHz: -2, -0.5, or +0.5\n"
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" command shell command to run while transmitting (default: wait for\n"
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" SIGINT instead)\n\n"
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" common options: [-c channel|-f freq] [-C mhz] [-d driver[:arg]] [-o file]\n"
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" [-p power] [-r rate] [-t trim]\n"
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" -c channel channel number, 11 to 26 (default %d)\n"
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" -C mhz output clock at 1, 2, 4, 8, or 16 MHz (default: off)\n"
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" -d driver[:arg]\n"
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" use the specified driver (default: %s)\n"
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" -f freq frequency in MHz, 2405 to 2480 (default %d)\n"
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" -o file write received data to a file in pcap format\n"
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" -p power transmit power, -17.2 to 3.0 dBm (default %.1f)\n"
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" -r rate data rate, 250k, 500k, 1M, or 2M (default: 250k)\n"
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" -t trim trim capacitor, 0 to 15 (default %d)\n"
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, name, name, name, name,
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DEFAULT_CHANNEL, atrf_default_driver_name(),
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2405+5*(DEFAULT_CHANNEL-11), DEFAULT_POWER,
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DEFAULT_TRIM);
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exit(1);
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}
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int main(int argc, char *const *argv)
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{
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enum {
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mode_msg,
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mode_per,
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mode_ping,
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mode_cont_tx,
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} mode = mode_msg;
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const char *driver = NULL;
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int channel = DEFAULT_CHANNEL;
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double power = DEFAULT_POWER;
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uint8_t rate = OQPSK_DATA_RATE_250;
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int trim = DEFAULT_TRIM, times = 1;
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uint8_t cont_tx = 0;
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double pause_s = 0;
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char *end;
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int c, freq;
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unsigned clkm = 0;
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int status = 0;
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const char *pcap_file = NULL;
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struct atrf_dsc *dsc;
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while ((c = getopt(argc, argv, "c:C:d:f:o:p:r:E:Pt:T:")) != EOF)
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switch (c) {
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case 'c':
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channel = strtoul(optarg, &end, 0);
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if (*end)
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usage(*argv);
|
|
if (channel < 11 || channel > 26)
|
|
usage(*argv);
|
|
break;
|
|
case 'd':
|
|
driver = optarg;
|
|
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 'o':
|
|
pcap_file = optarg;
|
|
break;
|
|
case 'p':
|
|
power = strtod(optarg, &end);
|
|
if (*end)
|
|
usage(*argv);
|
|
break;
|
|
case 'r':
|
|
if (!strcmp(optarg, "250k"))
|
|
rate = OQPSK_DATA_RATE_250;
|
|
else if (!strcmp(optarg, "500k"))
|
|
rate = OQPSK_DATA_RATE_500;
|
|
else if (!strcmp(optarg, "1M"))
|
|
rate = OQPSK_DATA_RATE_1000;
|
|
else if (!strcmp(optarg, "2M"))
|
|
rate = OQPSK_DATA_RATE_2000;
|
|
else
|
|
usage(*argv);
|
|
break;
|
|
case 't':
|
|
trim = strtoul(optarg, &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
if (trim > 15)
|
|
usage(*argv);
|
|
break;
|
|
case 'C':
|
|
clkm = strtol(optarg, &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
if (!clkm)
|
|
usage(*argv);
|
|
break;
|
|
case 'E':
|
|
mode = mode_per;
|
|
pause_s = strtof(optarg, &end);
|
|
if (*end)
|
|
usage(*argv);
|
|
break;
|
|
case 'P':
|
|
mode = mode_ping;
|
|
break;
|
|
case 'T':
|
|
mode = mode_cont_tx;
|
|
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(driver, trim, clkm);
|
|
set_channel(dsc, channel);
|
|
set_rate(dsc, rate);
|
|
switch (mode) {
|
|
case mode_msg:
|
|
receive(dsc, pcap_file);
|
|
break;
|
|
case mode_per:
|
|
set_power_dBm(dsc, power, 0);
|
|
transmit_pattern(dsc, pause_s, 0);
|
|
break;
|
|
case mode_ping:
|
|
set_power_dBm(dsc, power, 1);
|
|
ping(dsc, pause_s, 0);
|
|
break;
|
|
case mode_cont_tx:
|
|
set_power_dBm(dsc, power, 0);
|
|
status = test_mode(dsc, cont_tx, NULL);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
break;
|
|
case 2:
|
|
switch (mode) {
|
|
case mode_msg:
|
|
break;
|
|
case mode_per:
|
|
case mode_ping:
|
|
/* fall through */
|
|
case mode_cont_tx:
|
|
usage(*argv);
|
|
default:
|
|
abort();
|
|
}
|
|
times = strtoul(argv[optind+1], &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
/* fall through */
|
|
case 1:
|
|
dsc = init_txrx(driver, trim, clkm);
|
|
set_channel(dsc, channel);
|
|
set_rate(dsc, rate);
|
|
switch (mode) {
|
|
case mode_msg:
|
|
set_power_dBm(dsc, power, 1);
|
|
transmit(dsc, argv[optind], times);
|
|
break;
|
|
case mode_per:
|
|
times = strtoul(argv[optind], &end, 0);
|
|
if (*end)
|
|
usage(*argv);
|
|
set_power_dBm(dsc, power, 0);
|
|
transmit_pattern(dsc, pause_s, times);
|
|
break;
|
|
case mode_ping:
|
|
pause_s = strtof(argv[optind], &end);
|
|
if (*end)
|
|
usage(*argv);
|
|
set_power_dBm(dsc, power, 1);
|
|
ping(dsc, pause_s, 1);
|
|
break;
|
|
case mode_cont_tx:
|
|
set_power_dBm(dsc, power, 0);
|
|
status = test_mode(dsc, cont_tx, argv[optind]);
|
|
break;
|
|
default:
|
|
abort();
|
|
|
|
}
|
|
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;
|
|
}
|