RT 求高手帮忙
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P6SEL |= 0x10; // P6.4 ADC option select
ADC12CTL0 = ADC12SHT02 + ADC1 ; // Sampling time, ADC12 on
ADC12CTL1 = ADC12SHP; // Use sampling timer
ADC12IE = 0x10; // Enable interrupt
ADC12CTL0 |= ADC12ENC;
P2DIR |= 0x08; // P2.3 output
while (1)
{
ADC12CTL0 |= ADC12SC; // Start sampling/conversion
__bis_SR_register(LPM0_bits + GIE); // LPM0, ADC12_ISR will force exit
__no_operation(); // For debugger
}
}
#pragma vector = ADC12_VECTOR
__interrupt void ADC12_ISR(void)
{
switch(__even_in_range(ADC12IV,34))
{
case 0: break; // Vector 0: No interrupt
case 2: break; // Vector 2: ADC overflow
case 4: break; // Vector 4: ADC timing overflow
case 6: break; // Vector 6: ADC12IFG0
case 8: break; // Vector 8: ADC12IFG1
case 10: break; // Vector 10: ADC12IFG2
case 12: break; // Vector 12: ADC12IFG3
case 14: // Vector 14: ADC12IFG4
if (ADC12MEM4 >= 0x7ff) // ADC12MEM = A4 > 0.5AVcc?
P2OUT |= BIT3; // P2.3 = 1
else
P2OUT &= ~BIT3; // P2.3 = 0
__bic_SR_register_on_exit(LPM0_bits); // Exit active CPU
case 16: break; // Vector 16: ADC12IFG5
case 18: break; // Vector 18: ADC12IFG6
case 20: break; // Vector 20: ADC12IFG7
case 22: break; // Vector 22: ADC12IFG8
case 24: break; // Vector 24: ADC12IFG9
case 26: break; // Vector 26: ADC12IFG10
case 28: break; // Vector 28: ADC12IFG11
case 30: break; // Vector 30: ADC12IFG12
case 32: break; // Vector 32: ADC12IFG13
case 34: break; // Vector 34: ADC12IFG14
default: break;
}
} |
|
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