From 347d6b32e2b1526b0a88d7bcd06da5d68633918b Mon Sep 17 00:00:00 2001
From: jwhui <jwhui>
Date: Wed, 17 Jan 2007 05:14:18 +0000
Subject: [PATCH] Bug fix for problem noted by David Moss. The radio does not
 switch frequencies until either (i) transmitting a packet or (ii) turning off
 then on receive mode. The fix is to turn off then on receive mode.

---
 tos/chips/cc2420/CC2420ControlP.nc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tos/chips/cc2420/CC2420ControlP.nc b/tos/chips/cc2420/CC2420ControlP.nc
index 639fc9c1..38464cb4 100644
--- a/tos/chips/cc2420/CC2420ControlP.nc
+++ b/tos/chips/cc2420/CC2420ControlP.nc
@@ -266,10 +266,14 @@ implementation {
     }
 
     call CSN.clr();
+    call SRFOFF.strobe();
     call FSCTRL.write( ( 1 << CC2420_FSCTRL_LOCK_THR ) |
 		       ( ( (channel - 11)*5+357 ) << CC2420_FSCTRL_FREQ ) );
     call PANID.write( 0, (uint8_t*)id, sizeof( id ) );
     call CSN.set();
+    call CSN.clr();
+    call SRXON.strobe();
+    call CSN.set();
     call SyncResource.release();
     
     post syncDone_task();
-- 
2.39.2