MSP430G2553,TSSOP20封装的，支持ADC10吗。都没有看到AVCC的供电啊

Q W

Prodigy 140 points

Other Parts Discussed in Thread: MSP430G2553

如题，请问工程师。这个封装没有AVCC 是不是就不能用ADC功能了？还是有别的处理？？？

12 年多前

0 Xutong Han2 12 年多前

Expert 2480 points

可以使用ADC的，这是一个官方例程

int main(void)
{
WDTCTL = WDTPW + WDTHOLD;                                         // Stop WDT
ADC10CTL0 = ADC10SHT_2 + ADC10ON + ADC10IE; // ADC10ON, interrupt enabled
ADC10CTL1 = INCH_1;                       // input A1
ADC10AE0 |= 0x02;                         // PA.1 ADC option select
P1DIR |= 0x01;                            // Set P1.0 to output direction

for (;;)
{
    ADC10CTL0 |= ENC + ADC10SC;             // Sampling and conversion start
    __bis_SR_register(CPUOFF + GIE);        // LPM0, ADC10_ISR will force exit
    if (ADC10MEM < 0x1FF)
      P1OUT &= ~0x01;                       // Clear P1.0 LED off
    else
      P1OUT |= 0x01;                        // Set P1.0 LED on
}
}

// ADC10 interrupt service routine
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void)
{
__bic_SR_register_on_exit(CPUOFF); // Clear CPUOFF bit from 0(SR)
}