學習這一小節遇到的問題
問題1：
java net.tinyos.tools.MsgReader BlinkToRadioMsg
java.lang.ClassNotFoundException: BlinkToRadioMsg
serial@/dev/ttyUSB0:115200: resynchronising
這個由於 classpath 路徑設置的有些問題，所以
你只需要修改下 /opt/tinyos-2.1.1/ 下的 tinyos.sh
我的 tinyos.sh 如下
#! /usr/bin/env bash
# Here we setup the environment
# variables needed by the tinyos
# make system
echo "Setting up for TinyOS 2.1.1"
export TOSROOT=
export TOSDIR=
export MAKERULES=
export MOTECOM
TOSROOT="/opt/tinyos-2.1.1"
TOSDIR="$TOSROOT/tos"
CLASSPATH=$CLASSPATH:$TOSROOT/support/sdk/java/:$TOSROOT/support/sdk/java/tinyos.jar
MAKERULES="$TOSROOT/support/make/Makerules"
MOTECOM="serial@/dev/ttyUSB0:115200" # telosb
export TOSROOT
export TOSDIR
export CLASSPATH
export MAKERULES
export MOTECOM
問題2：
java net.tinyos.tools.MsgReader BlinkToRadioMsg
BlinkToRadioMsg does not have an AM type - ignored
warning: Cannot determine AM type for BlinkToRadioMsg
(Looking for definition of AM_BLINKTORADIOMSG)
這個問題的解決方法是依據
One part of the TinyOS communication toolchain requires being able to
figure out which AM types correspond to what kinds of packets. To
determine this, for a packet type named X, mig looks for a constant of
the form AM_X
. The warning is because we defined our AM
type as AM_BLINKTORADIO, but mig wants AM_BLINKTORADIOMSG. Modify
BlinkToRadio.h so that it defines the latter. You'll also need to update
BlinkToRadioAppC.nc so that the arguments to AMSenderC and AMReceiverC
use it. Recompile the application, and you should see no warning.
Install it on a mote.
所以，你要把
BlinkToRadio.h 和 BlinkToRadioAppC.nc
裏的AM_BLINKTORADIO 修改成 AM_BLINKTORADIOMSG
問題即解決