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+/* --COPYRIGHT--,BSD_EX
+ * Copyright (c) 2012, Texas Instruments Incorporated
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * *  Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * *  Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * *  Neither the name of Texas Instruments Incorporated nor the names of
+ *    its contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *******************************************************************************
+ * 
+ *                       MSP430 CODE EXAMPLE DISCLAIMER
+ *
+ * MSP430 code examples are self-contained low-level programs that typically
+ * demonstrate a single peripheral function or device feature in a highly
+ * concise manner. For this the code may rely on the device's power-on default
+ * register values and settings such as the clock configuration and care must
+ * be taken when combining code from several examples to avoid potential side
+ * effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
+ * for an API functional library-approach to peripheral configuration.
+ *
+ * --/COPYRIGHT--*/
+//******************************************************************************
+//  MSP430F20x2 Demo - ADC10, Sample A10 Temp and Convert to oC and oF
+//
+//  Description: A single sample is made on A10 with reference to internal
+//  1.5V Vref. Software sets ADC10SC to start sample and conversion - ADC10SC
+//  automatically cleared at EOC. ADC10 internal oscillator/4 times sample
+//  (64x) and conversion. In Mainloop MSP430 waits in LPM0 to save power until
+//  ADC10 conversion complete, ADC10_ISR will force exit from any LPMx in
+//  Mainloop on reti. Temperaure in oC stored in IntDegC, oF in IntDegF.
+//  Uncalibrated temperature measured from device to device will vary with
+//  slope and offset - please see datasheet.
+//  ACLK = n/a, MCLK = SMCLK = default DCO ~1.2MHz, ADC10CLK = ADC10OSC/4
+//
+//                MSP430F20x2
+//             -----------------
+//         /|\|              XIN|-
+//          | |                 |
+//          --|RST          XOUT|-
+//            |                 |
+//            |A10              |
+//
+//  L. Westlund
+//  Texas Instruments Inc.
+//  May 2006
+//  Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.41A
+//******************************************************************************
+#include <msp430.h>
+
+long temp;
+long IntDegF;
+long IntDegC;
+
+int main(void)
+{
+  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
+  ADC10CTL1 = INCH_10 + ADC10DIV_3;         // Temp Sensor ADC10CLK/4
+  ADC10CTL0 = SREF_1 + ADC10SHT_3 + REFON + ADC10ON + ADC10IE;
+  __enable_interrupt();                     // Enable interrupts.
+  TACCR0 = 30;                              // Delay to allow Ref to settle
+  TACCTL0 |= CCIE;                          // Compare-mode interrupt.
+  TACTL = TASSEL_2 | MC_1;                  // TACLK = SMCLK, Up mode.
+  LPM0;                                     // Wait for delay.
+  TACCTL0 &= ~CCIE;                         // Disable timer Interrupt
+  __disable_interrupt();
+
+  while(1)
+  {
+    ADC10CTL0 |= ENC + ADC10SC;             // Sampling and conversion start
+    __bis_SR_register(CPUOFF + GIE);        // LPM0 with interrupts enabled
+
+    // oF = ((A10/1024)*1500mV)-923mV)*1/1.97mV = A10*761/1024 - 468
+    temp = ADC10MEM;
+    IntDegF = ((temp - 630) * 761) / 1024;
+
+    // oC = ((A10/1024)*1500mV)-986mV)*1/3.55mV = A10*423/1024 - 278
+    temp = ADC10MEM;
+    IntDegC = ((temp - 673) * 423) / 1024;
+
+    __no_operation();                       // SET BREAKPOINT HERE
+  }
+}
+
+// ADC10 interrupt service routine
+#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
+#pragma vector=ADC10_VECTOR
+__interrupt void ADC10_ISR (void)
+#elif defined(__GNUC__)
+void __attribute__ ((interrupt(ADC10_VECTOR))) ADC10_ISR (void)
+#else
+#error Compiler not supported!
+#endif
+{
+  __bic_SR_register_on_exit(CPUOFF);        // Clear CPUOFF bit from 0(SR)
+}
+
+#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
+#pragma vector=TIMERA0_VECTOR
+__interrupt void ta0_isr(void)
+#elif defined(__GNUC__)
+void __attribute__ ((interrupt(TIMERA0_VECTOR))) ta0_isr (void)
+#else
+#error Compiler not supported!
+#endif
+{
+  TACTL = 0;
+  LPM0_EXIT;                                // Exit LPM0 on return
+}