From dfbae4ae464c8990d122cc07951edcdbc1983ac4 Mon Sep 17 00:00:00 2001
From: "R. Steve McKown" <rsmckown@gmail.com>
Date: Mon, 2 Aug 2010 14:26:29 -0600
Subject: [PATCH] Ensure Uart state variables are reset on resource config and
 unconfig.

---
 tos/chips/msp430/usci/Msp430UartP.nc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tos/chips/msp430/usci/Msp430UartP.nc b/tos/chips/msp430/usci/Msp430UartP.nc
index cdc08089..a35dd92e 100644
--- a/tos/chips/msp430/usci/Msp430UartP.nc
+++ b/tos/chips/msp430/usci/Msp430UartP.nc
@@ -104,6 +104,10 @@ implementation {
 	call TXD.selectModuleFunc();
       }
 
+      /* Reset important state variables */
+      m_robuf = 0;
+      m_sobuf = 0;
+
       /* Clear interrupts; we'll add them as needed */
       call Registers.clrIeRx();
       call Registers.clrIeTx();
@@ -124,6 +128,10 @@ implementation {
       call Registers.clrIeTx();
       call Registers.clrIfgRx();
 
+      /* Reset important state variables */
+      m_robuf = 0;
+      m_sobuf = 0;
+
       /* Restore pins to their pre-configure state */
       if (m_pins & PINS_RXD)
 	call RXD.selectIOFunc();
-- 
2.39.2