X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Fplatforms%2Firis%2Fchips%2Frf230%2FHplRF230.h;h=4418ffea859a57e4039e05996ab8e213e711f31c;hb=e3cfa7776f6d8e739d5fb613668b470111d75d55;hp=c144173b95278561af987bb77e1782cff3687537;hpb=fcb117d8c101ca455d5728fd9772ca69a6bfe0ae;p=tinyos-2.x.git

diff --git a/tos/platforms/iris/chips/rf230/HplRF230.h b/tos/platforms/iris/chips/rf230/HplRF230.h
index c144173b..4418ffea 100644
--- a/tos/platforms/iris/chips/rf230/HplRF230.h
+++ b/tos/platforms/iris/chips/rf230/HplRF230.h
@@ -52,10 +52,16 @@ enum
  */
 typedef TOne TRF230;
 
+
+/**
+ * The number of alarm ticks per one second (921600)
+ */
+#define RF230_ALARM_SEC	((7372800UL / MHZ / 32) * (1 << MICA_DIVIDE_ONE_FOR_32KHZ_LOG2))
+
 /**
  * The number of alarm ticks per one microsecond (0.9216)
  */
-#define RF230_ALARM_MICROSEC	((7.3728 / MHZ / 32.0) * (1 << MICA_DIVIDE_ONE_FOR_32KHZ_LOG2))
+#define RF230_ALARM_MICROSEC	(RF230_ALARM_SEC / 1000000.0)
 
 /* This is the default value of the TX_PWR field of the PHY_TX_PWR register. */
 #ifndef RF230_DEF_RFPOWER