X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Fchips%2Frf230%2FRF230LayerP.nc;h=4ba79fca8bf74f60d948f3f78c71a38f29e0186e;hb=adf1de6c009d13b7b52e68535c63b28f59c97400;hp=cda1a21615df48d11208c5282af4e3e83927b7ac;hpb=f51909bb40e6fd22e15fc26f0e0b464ee554ccfe;p=tinyos-2.x.git

diff --git a/tos/chips/rf230/RF230LayerP.nc b/tos/chips/rf230/RF230LayerP.nc
index cda1a216..4ba79fca 100644
--- a/tos/chips/rf230/RF230LayerP.nc
+++ b/tos/chips/rf230/RF230LayerP.nc
@@ -25,6 +25,7 @@
 #include <HplRF230.h>
 #include <Tasklet.h>
 #include <RadioAssert.h>
+#include <TimeSyncMessage.h>
 
 module RF230LayerP
 {
@@ -57,14 +58,15 @@ module RF230LayerP
 		interface PacketField<uint8_t> as PacketLinkQuality;
 		interface PacketField<uint8_t> as PacketTransmitPower;
 		interface PacketField<uint8_t> as PacketRSSI;
-		interface PacketTimeStamp<TRF230, uint16_t>;
+		interface PacketField<uint8_t> as PacketTimeSyncOffset;
+
+		interface PacketTimeStamp<TRF230, uint32_t>;
+		interface LocalTime<TRF230>;
 
 		interface RF230Config;
 		interface Tasklet;
 		interface RadioAlarm;
 
-		async event void lastTouch(message_t* msg);
-
 #ifdef RF230_DEBUG
 		interface DiagMsg;
 #endif
@@ -148,11 +150,11 @@ implementation
 
 	enum
 	{
-		SLEEP_WAKEUP_TIME = (uint16_t)(880 * RF230_ALARM_MICROSEC),
-		CCA_REQUEST_TIME = (uint16_t)(140 * RF230_ALARM_MICROSEC),
+		SLEEP_WAKEUP_TIME = (uint16_t)(880 * RF230_ALARM_SEC / 1000000UL),
+		CCA_REQUEST_TIME = (uint16_t)(140 * RF230_ALARM_SEC / 1000000UL),
 
-		TX_SFD_DELAY = (uint16_t)(176 * RF230_ALARM_MICROSEC),
-		RX_SFD_DELAY = (uint16_t)(8 * RF230_ALARM_MICROSEC),
+		TX_SFD_DELAY = (uint16_t)(176 * RF230_ALARM_SEC / 1000000UL),
+		RX_SFD_DELAY = (uint16_t)(8 * RF230_ALARM_SEC / 1000000UL),
 	};
 
 	tasklet_async event void RadioAlarm.fired()
@@ -390,17 +392,12 @@ implementation
 		uint8_t length;
 		uint8_t* data;
 		uint8_t header;
+		uint32_t time32;
+		void* timesync;
 
 		if( cmd != CMD_NONE || state != STATE_RX_ON || ! isSpiAcquired() || radioIrq )
 			return EBUSY;
 
-		if( call RF230Config.requiresRssiCca(msg) 
-				&& (readRegister(RF230_PHY_RSSI) & RF230_RSSI_MASK) > ((rssiClear + rssiBusy) >> 3) )
-			return EBUSY;
-
-		writeRegister(RF230_TRX_STATE, RF230_PLL_ON);
-
-		// do something useful, just to wait a little
 		length = (call PacketTransmitPower.isSet(msg) ?
 			call PacketTransmitPower.get(msg) : RF230_DEF_RFPOWER) & RF230_TX_PWR_MASK;
 
@@ -410,6 +407,16 @@ implementation
 			writeRegister(RF230_PHY_TX_PWR, RF230_TX_AUTO_CRC_ON | txPower);
 		}
 
+		if( call RF230Config.requiresRssiCca(msg) 
+				&& (readRegister(RF230_PHY_RSSI) & RF230_RSSI_MASK) > ((rssiClear + rssiBusy) >> 3) )
+			return EBUSY;
+
+		writeRegister(RF230_TRX_STATE, RF230_PLL_ON);
+
+		// do something useful, just to wait a little
+		time32 = call LocalTime.get();
+		timesync = call PacketTimeSyncOffset.isSet(msg) ? msg->data + call PacketTimeSyncOffset.get(msg) : 0;
+
 		// we have missed an incoming message in this short amount of time
 		if( (readRegister(RF230_TRX_STATUS) & RF230_TRX_STATUS_MASK) != RF230_PLL_ON )
 		{
@@ -446,14 +453,16 @@ implementation
 
 		length -= header;
 
-		// first upload the header
+		// first upload the header to gain some time
 		do {
 			call HplRF230.spiSplitReadWrite(*(data++));
 		}
 		while( --header != 0 );
 
-		call PacketTimeStamp.set(msg, time);
-		signal lastTouch(msg);
+		time32 += (int16_t)(time) - (int16_t)(time32);
+
+		if( timesync != 0 )
+			*(timesync_relative_t*)timesync = (*(timesync_absolute_t*)timesync) - time32;
 
 		do {
 			call HplRF230.spiSplitReadWrite(*(data++));
@@ -492,6 +501,11 @@ implementation
 		}
 #endif
 
+		if( timesync != 0 )
+			*(timesync_absolute_t*)timesync = (*(timesync_relative_t*)timesync) + time32;
+
+		call PacketTimeStamp.set(msg, time32);
+
 		// wait for the TRX_END interrupt
 		state = STATE_BUSY_TX_2_RX_ON;
 		cmd = CMD_TRANSMIT;
@@ -587,7 +601,7 @@ implementation
 			length = call RF230Config.getLength(rxMsg);
 
 			call DiagMsg.str("rx");
-			call DiagMsg.uint16(call PacketTimeStamp.isSet(rxMsg) ? call PacketTimeStamp.get(rxMsg) : 0);
+			call DiagMsg.uint32(call PacketTimeStamp.isValid(rxMsg) ? call PacketTimeStamp.timestamp(rxMsg) : 0);
 			call DiagMsg.uint16(call RadioAlarm.getNow());
 			call DiagMsg.uint8(crc != 0);
 			call DiagMsg.uint8(length);
@@ -623,6 +637,7 @@ implementation
 		if( isSpiAcquired() )
 		{
 			uint16_t time;
+			uint32_t time32;
 			uint8_t irq;
 			uint8_t temp;
 			
@@ -681,17 +696,15 @@ implementation
 					if( irq == RF230_IRQ_RX_START )
 					{
 						temp = readRegister(RF230_PHY_RSSI) & RF230_RSSI_MASK;
-
 						rssiBusy += temp - (rssiBusy >> 2);
-
-#ifdef RF230_RSSI_ENERGY
-						temp = readRegister(RF230_PHY_ED_LEVEL);
-#endif
-
+#ifndef RF230_RSSI_ENERGY
 						call PacketRSSI.set(rxMsg, temp);
 					}
 					else
+					{
 						call PacketRSSI.clear(rxMsg);
+#endif
+					}
 
 					/*
 					 * The timestamp corresponds to the first event which could not
@@ -702,7 +715,11 @@ implementation
 					 * CMD_TRANSMIT.
 					 */
 					if( irq == RF230_IRQ_RX_START ) // just to be cautious
-						call PacketTimeStamp.set(rxMsg, time - RX_SFD_DELAY);
+					{
+						time32 = call LocalTime.get();
+						time32 += (int16_t)(time - RX_SFD_DELAY) - (int16_t)(time32);
+						call PacketTimeStamp.set(rxMsg, time32);
+					}
 					else
 						call PacketTimeStamp.clear(rxMsg);
 
@@ -728,7 +745,12 @@ implementation
 				else if( cmd == CMD_RECEIVE )
 				{
 					ASSERT( state == STATE_RX_ON || state == STATE_PLL_ON_2_RX_ON );
-
+#ifdef RF230_RSSI_ENERGY
+					if( irq == RF230_IRQ_TRX_END )
+						call PacketRSSI.set(rxMsg, readRegister(RF230_PHY_ED_LEVEL));
+					else
+						call PacketRSSI.clear(rxMsg);
+#endif
 					if( state == STATE_PLL_ON_2_RX_ON )
 					{
 						ASSERT( (readRegister(RF230_TRX_STATUS) & RF230_TRX_STATUS_MASK) == RF230_PLL_ON );