Ensure Uart state variables are reset on resource config and unconfig.

diff --git a/tos/chips/msp430/usci/Msp430UartP.nc b/tos/chips/msp430/usci/Msp430UartP.nc
index cdc08089793142d70ef6892dfe40ece057697dce..a35dd92eb8d4b05a2296b1612ecde05f79d30b44 100644 (file)
--- 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();