fake_trx: Implement RFMUTE TRXC cmd

Change-Id: I67d16858cd70cb0527c1da77bd3787d5e53100b4

src/target/trx_toolkit/burst_fwd.py

@@ -50,6 +50,10 @@ class BurstForwarder(TRXList):
 		# so let's precalculate its Tx frequency in advance
 		tx_freq = src_trx.get_tx_freq(rx_msg.fn)
 
+		if src_trx.rf_muted:
+			del rx_msg.burst # burst bits are omited
+			rx_msg.burst = None
+
 		# Iterate over all known transceivers
 		for trx in self.trx_list:
 			if trx == src_trx:

src/target/trx_toolkit/ctrl_if_trx.py

@@ -251,6 +251,13 @@ class CTRLInterfaceTRX(CTRLInterface):
 			log.debug("(%s) Recv NOMTXPOWER cmd" % self.trx)
 			return (0, [str(self.trx.tx_power_base)])
 
+		# Lock/Unlock RF emission+reception
+		if self.verify_cmd(request, "RFMUTE", 1):
+			log.debug("(%s) Recv RFMUTE cmd" % self.trx)
+			# Parse the requested RFMUTE state (1=locked, 0=unlocked)
+			self.trx.rf_muted = int(request[1]) > 0
+			return 0
+
 		# Wrong / unknown command
 		else:
 			# We don't care about other commands,

src/target/trx_toolkit/data_msg.py

@@ -413,6 +413,8 @@ class DATAMSG_L12TRX(DATAMSG):
 		# Convert burst bits
 		if self.burst is not None:
 			msg.burst = self.ubit2sbit(self.burst)
+		else:
+			msg.nope_ind = True
 
 		return msg
 

src/target/trx_toolkit/fake_trx.py

@@ -125,6 +125,8 @@ class FakeTRX(Transceiver):
 		# When disabled, RSSI is calculated based on Tx power and Rx path loss
 		self.fake_rssi_enabled = False
 
+		self.rf_muted = False
+
 		# Actual ToA, RSSI, C/I, TA values
 		self.tx_power_base = self.NOMINAL_TX_POWER_DEFAULT
 		self.tx_att_base = self.TX_ATT_DEFAULT
@@ -215,8 +217,11 @@ class FakeTRX(Transceiver):
 	# simulates RF path parameters (such as RSSI),
 	# and sends towards the L1
 	def handle_data_msg(self, src_trx, src_msg, msg):
-		# Path loss simulation
-		msg.nope_ind = self.sim_burst_drop(msg)
+		if self.rf_muted:
+			msg.nope_ind = True
+		elif not msg.nope_ind:
+			# Path loss simulation
+			msg.nope_ind = self.sim_burst_drop(msg)
 		if msg.nope_ind:
 			# Before TRXDv1, we simply drop the message
 			if msg.ver < 0x01: