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问 为什么我用这段14X的程序把include改成16X的，得到的AD数值总是0呢？
这段程序是在TI下的，不会有问题吧？
谢谢大家了

//******************************************************************************
// MSP-FET430P140 Demo - ADC12, Using the Internal Reference
//
// This example shows how to use the internal reference of the ADC12.
// It uses the internal 2.5V reference and performs a single conversion
// on channel A0. The conversion results are stored in ADC12MEM0. Test by
// applying a voltage to channel A0, then setting and running to a break point
// at the "_NOP()" instruction. To view the conversion results, open an ADC12 register
// window in C-Spy and view the contents of ADC12MEM0.
//
//
// MSP430F149
// ---------------
// | |
// | A0 (P6.0)|<---- Vin
// | |
//
//
// M.Mitchell
// Texas Instruments, Inc
// February,2002
// Built with IAR Embedded Workbench Version: 1.25A
// December 2003
// Updated for IAR Embedded Workbench Version: 2.21B
//******************************************************************************
#include "MSP430x16x.h" // Standard Equations

void main(void)
{
unsigned int i;
WDTCTL = WDTPW+WDTHOLD; // Stop watchdog timer
P6SEL |= 0x01; // Enable A/D channel A0
ADC12CTL0 = ADC12ON+SHT0_2+REFON+REF2_5V; // Turn on and set up ADC12
ADC12CTL1 = SHP; // Use sampling timer
ADC12MCTL0 = SREF_1; // Vr+=Vref+

for ( i=0; i<0x3600; i++) // Delay for reference start-up
{
}

ADC12CTL0 |= ENC; // Enable conversions

while (1)
{
ADC12CTL0 |= ADC12SC; // Start conversion
while ((ADC12IFG & BIT0)==0);
_NOP(); // SET BREAKPOINT HERE
}
} 答 1: 可以的呀