deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

added a hi-res RSSI scanner and viewer for sky/jcreate

Browse source
This commit is contained in:
joxe 2009-04-25 09:41:37 +00:00
parent 332d1f45c0
commit d8d7e9142d
3 changed files with 185 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
examples/sky/Makefile
View file

@ -11,4 +11,10 @@ all: blink sky-collect #rt-leds test-button test-cfs tcprudolph0
echo $(basename $<)/$(basename $<).ihex 600 > $(basename $<)/runfile ; \
tar czf $@ $(basename $<)
%.class: %.java
javac $(basename $<).java
viewrssi: ViewRSSI.class
make login | java ViewRSSI
include $(CONTIKI)/Makefile.include

86
examples/sky/ViewRSSI.java Normal file
View file

@ -0,0 +1,86 @@
/**
* RSSI Viewer - view RSSI values of 802.15.4 channels
* ---------------------------------------------------
* Note: run the rssi-scanner on a Sky or sentilla node connected to USB
* then start with
* make login | java ViewRSSI
*
* Created: Fri Apr 24 00:40:01 2009, Joakim Eriksson
*
* @author Joakim Eriksson, SICS
* @version 1.0
*/
import javax.swing.*;
import java.awt.*;
import java.io.*;
public class ViewRSSI extends JPanel {
private int[] rssi = new int[80];
private int[] rssiMax = new int[80];
/* this is the max value of the RSSI from the cc2420 */
private static final int RSSI_MAX_VALUE = 200;
public ViewRSSI() {
}
public void paint(Graphics g) {
int h = getHeight();
int w = getWidth();
g.clearRect(0, 0, 300, h);
double factor = (h - 20.0) / RSSI_MAX_VALUE;
double sSpacing = (w - 15 ) / 80.0;
int sWidth = (int) (sSpacing - 1);
if (sWidth == 0) sWidth = 1;
g.setColor(Color.gray);
double xpos = 10;
for (int i = 0, n = rssi.length; i < n; i++) {
int rssi = (int) (rssiMax[i] * factor);
g.fillRect((int) xpos, h - 20 - rssi,
sWidth, rssi + 1);
xpos += sSpacing;
}
g.setColor(Color.black);
xpos = 10;
for (int i = 0, n = rssi.length; i < n; i++) {
int rssiVal = (int) (rssi[i] * factor);
g.fillRect((int) xpos, h - 20 - rssiVal,
sWidth, rssiVal + 1);
xpos += sSpacing;
}
}
private void handleInput() throws IOException {
BufferedReader reader =
new BufferedReader(new InputStreamReader(System.in));
while(true) {
String line = reader.readLine();
if (line.startsWith("RSSI:")) {
try {
String[] parts = line.split(" ");
for (int i = 1, n = parts.length; i < n; i++) {
rssi[i] = 3 * Integer.parseInt(parts[i]);
if (rssi[i] > rssiMax[i]) rssiMax[i] = rssi[i];
else if (rssiMax[i] > 0) rssiMax[i]--;
}
} catch (Exception e) {
/* report but do not fail... */
e.printStackTrace();
}
repaint();
}
}
}
public static void main(String[] args) throws IOException {
JFrame win = new JFrame("RSSI Viewer");
ViewRSSI panel;
win.setBounds(10, 10, 300, 300);
win.getContentPane().add(panel = new ViewRSSI());
win.setVisible(true);
panel.handleInput();
}
}

93
examples/sky/rssi-scanner.c Normal file
View file

@ -0,0 +1,93 @@
/*
* Copyright (c) 2007, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* $Id: rssi-scanner.c,v 1.1 2009/04/25 09:41:37 joxe Exp $
*/
/**
* \file
* Scanning 2.4 GHz radio frequencies using CC2420 and prints
* the values
* \author
* Joakim Eriksson, joakime@sics.se
*/
#include "contiki.h"
#include "net/rime.h"
#include "dev/leds.h"
#include "dev/cc2420.h"
#include "dev/cc2420_const.h"
#include "dev/spi.h"
#include <stdio.h>
/*---------------------------------------------------------------------------*/
/* This assumes that the CC2420 is always on and "stable" */
static void
set_frq(int c)
{
int f;
/* fine graied channel - can we even read other channels with CC2420 ? */
f = c + 302 + 0x4000;
FASTSPI_SETREG(CC2420_FSCTRL, f);
FASTSPI_STROBE(CC2420_SRXON);
}
static void
do_rssi(void)
{
int channel;
printf("RSSI:");
for(channel = 0; channel <= 79; ++channel) {
set_frq(channel + 55);
printf("%d ", cc2420_rssi() + 53);
}
printf("\n");
}
/*---------------------------------------------------------------------------*/
PROCESS(scanner_process, "RSSI Scanner");
AUTOSTART_PROCESSES(&scanner_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(scanner_process, ev, data)
{
PROCESS_BEGIN();
/* switch mac layer off, and turn radio on */
rime_mac->off(0);
cc2420_on();
while(1) {
do_rssi();
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/