Hi，
Is there anyone who use MAC timestamp in MoteWorks?
I use the SysTimeStampingM module, but after I called addstamp2(), the
packet can't be received by other nodes. I am using Micaz motes.
Can anyone help me? Thank you very much!
PS: The code of SysTimeStamping
//==================================================
//SysTimeStampingC.nc:
//===============================================
configuration SysTimeStampingC
{
provides
{
interface TimeStamping;
}
}
implementation
{
components SysTimeStampingM, CC2420RadioM, SysTimeC, NoLeds as LedsC,
HPLCC2420M;
TimeStamping = SysTimeStampingM;
SysTimeStampingM.RadioSendCoordinator -> CC2420RadioM.RadioSendCoordinator;
SysTimeStampingM.RadioReceiveCoordinator ->
CC2420RadioM.RadioReceiveCoordinator;
SysTimeStampingM.SysTime -> SysTimeC;
SysTimeStampingM.Leds -> LedsC;
SysTimeStampingM.HPLCC2420RAM -> HPLCC2420M;
}
//==================================================
//SysTimeStampingM.nc:
//===============================================
#include "AM.h"
module SysTimeStampingM
{
provides
{
interface TimeStamping;
}
uses
{
interface RadioCoordinator as RadioSendCoordinator;
interface RadioCoordinator as RadioReceiveCoordinator;
interface SysTime;
interface Leds;
interface HPLCC2420RAM;
}
}
implementation
{
int8_t sendStampOffset = -1;
TOS_MsgPtr sendMsg;
uint32_t captureTime;
uint32_t downloadTime;
uint32_t receiveTime;
TOS_MsgPtr receiveMsg;
enum{
TX_FIFO_MSG_START = 10,
SEND_TIME_CORRECTION = 6,
};
command result_t TimeStamping.addStamp2(TOS_MsgPtr msg, int8_t offset)
{
uint8_t ret = FAIL;
if( 0 <= offset && offset <= TOSH_DATA_LENGTH - 4 )
{
atomic
{
sendStampOffset = offset;
sendMsg = msg;
ret = SUCCESS;
}
}
return ret;
}
async event void RadioSendCoordinator.startSymbol(uint8_t bitsPerBlock,
uint8_t offset, TOS_MsgPtr msgBuff)
{
int8_t offsetCopy = -1;
atomic
{
if( sendStampOffset >= 0 && msgBuff == sendMsg )
offsetCopy = sendStampOffset;
else
offsetCopy = -1;
}
if( offsetCopy >= 0 )
{
*(uint32_t*)((void*)msgBuff->data + offsetCopy) += call
SysTime.getTime32();
call Leds.redToggle();
call HPLCC2420RAM.write(TX_FIFO_MSG_START + offsetCopy, 4,
(void*)msgBuff->data + offsetCopy);
atomic sendStampOffset = -1;
}
}
async event void RadioReceiveCoordinator.startSymbol(uint8_t bitsPerBlock,
uint8_t offset, TOS_MsgPtr msgBuff)
{
atomic
{
captureTime = call SysTime.getTime32() + SEND_TIME_CORRECTION;
call Leds.greenToggle();
}
}
async event void RadioReceiveCoordinator.byte(TOS_MsgPtr msg, uint8_t
byteCount)
{
if( byteCount == 0 ) // fired when FIFOP is fired
{
atomic downloadTime = captureTime;
}
else // fired when RXFIFODONE is fired
{
atomic
{
receiveTime = downloadTime;
receiveMsg = msg;
}
}
}
command uint32_t TimeStamping.getStamp2(TOS_MsgPtr msg)
{
uint32_t time = 0;
atomic
{
if( receiveMsg == msg )
time = receiveTime;
}
return time;
}
async event result_t HPLCC2420RAM.readDone(uint16_t addr, uint8_t length,
uint8_t* buffer)
{
return SUCCESS;
}
async event result_t HPLCC2420RAM.writeDone(uint16_t addr, uint8_t length,
uint8_t* buffer)
{
return SUCCESS;
}
async event void RadioSendCoordinator.byte(TOS_MsgPtr msg, uint8_t byteCount)
{ }
async event void RadioSendCoordinator.blockTimer() { }
async event void RadioReceiveCoordinator.blockTimer() { }
}_______________________________________________
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