From: R. Steve McKown <rsmckown@gmail.com>
Date: Mon, 2 Aug 2010 20:26:48 +0000 (-0600)
Subject: TOS expects an enabled UART to have rx interrupt on by default.
X-Git-Tag: release/2.1.1-4.4~14
X-Git-Url: https://oss.titaniummirror.com/gitweb/?p=tinyos-2.x.git;a=commitdiff_plain;h=7837df6e52e3cfedad2ea2d97711685682b28d63

TOS expects an enabled UART to have rx interrupt on by default.

In other words, one will receive UartStream.received() without first having to
call UartStream.enableReceiveInterrupt.
---

diff --git a/tos/chips/msp430/usci/Msp430UartP.nc b/tos/chips/msp430/usci/Msp430UartP.nc
index a35dd92e..cb8073df 100644
--- a/tos/chips/msp430/usci/Msp430UartP.nc
+++ b/tos/chips/msp430/usci/Msp430UartP.nc
@@ -114,6 +114,10 @@ implementation {
 
       /* Enable the device */
       call Registers.clrCtl1(UCSWRST);
+
+      /* TOS convention is for receive interrupts on by default. */
+      call Registers.clrIfgRx();
+      call Registers.setIeRx();
     }
   }