Hi,
I am using T-2 and TOSSIM on cygwin. I have written a very simple
sender-receiver program to test radio communication. I have put dbg
statements at different places including sendDone and Receive. When I run
the program with TOSSIM, the dbg statements in the sendDone and receive
function never gets printed (which probably implies that the two functions
never gets called). But dbg statements from other functions (like when the
timer fires) works fine. I have tried increasing the length of simulation
but still no improvement.
On the other hand, when I install that same program on tmotes - it works
fine. I have verified successful send and receive operations by switching
on/off the leds.
Can anyone help me find out why it is behaving strangely in TOSSIM?
The actual code has been pasted below in case anyone wants to have a look.
Thanks,
--Mehedi
#include <Timer.h>
#include "TestSender.h"
configuration TestSenderAppC {
}
implementation {
components MainC;
components TestSenderC as MyModule;
components ActiveMessageC;
components new AMSenderC(20);
components new AMReceiverC(20);
components new TimerMilliC() as MyTimer;
components LedsC;
/* My module has an interface boot and it is basically wired to the
boot interface of MainC.
*/
MyModule.Boot -> MainC.Boot;
MyModule.AMSend -> AMSenderC;
MyModule.Receive -> AMReceiverC;
MyModule.AMControl -> ActiveMessageC;
MyModule.Packet -> AMSenderC;
MyModule.Timer0 -> MyTimer;
MyModule.Leds -> LedsC;
}
**********************************************************
module TestSenderC {
uses {
interface Boot;
interface AMSend;
interface Packet;
interface Receive;
interface Leds;
interface SplitControl as AMControl;
interface Timer<TMilli> as Timer0;
}
}
implementation {
bool sendChannelBusy = FALSE;
message_t packet;
event void Boot.booted() {
dbg("Log","[%s] Booted successfully at
%s\n",__FUNCTION__,sim_time_string());
//Let us start the radio
call AMControl.start();
}
event void AMControl.startDone(error_t err) {
if (err == SUCCESS) {
dbg("Log","[%s] Radio has been successfully started at
%s\n",__FUNCTION__,sim_time_string());
if(TOS_NODE_ID == 1) {
//Let us start timer
call Timer0.startPeriodic(5000);
}
else {
call Leds.led0Toggle();
}
}
else {
call AMControl.start();
}
}
event void AMControl.stopDone(error_t err) {
if (err == SUCCESS) {
dbg("Log","[%s] Radio has been successfully stopped at
%s\n",__FUNCTION__,sim_time_string());
}
}
event message_t* Receive.receive(message_t* msg, void* payload, uint8_t
len) {
dbg("Log","[%s] Packet has been successfully
received%s\n",__FUNCTION__,sim_time_string());
call Leds.led0Toggle();
return msg;
}
event void Timer0.fired() {
dbg("Log","[%s] Timer has fired at
%s\n",__FUNCTION__,sim_time_string());
if(!sendChannelBusy) {
TestSenderMsg *msgptr;
int i;
msgptr = (TestSenderMsg*)(call Packet.getPayload(&packet,NULL));
for(i = 0; i < 10; i++)
msgptr->data[i] = i*20;
if (call AMSend.send(AM_BROADCAST_ADDR,
&packet,sizeof(TestSenderMsg) ) == SUCCESS) {
dbg("Log","[%s] Trying to send a packet
%s\n",__FUNCTION__,sim_time_string());
sendChannelBusy = TRUE;
call Leds.led0On();
}
}
}
event void AMSend.sendDone(message_t* msg, error_t error) {
if(msg == &packet) {
dbg("Log","[%s] Packet sent successfully
%s\n",__FUNCTION__,sim_time_string());
sendChannelBusy = FALSE;
call Leds.led0Off();
}
}
}
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