哪位大神能给个430 AD转换的程序啊？

1万 · 2019-2-15 12:31

1万 · 2019-2-15 12:34

什么要求啊

1万 · 2019-2-15 12:39

系统是由TimerA控制的，每个脉冲到来的时候就进行一次AD转换，然后把转换的数据存起来。

1万 · 2019-2-15 12:42

AD转换是单通道的。

2万 · 2019-2-15 12:48

TI官网上有例程的，你去下载过来呗~

2万 · 2019-2-15 12:50

//******************************************************************************
//  MSP430F21x2 Demo - ADC10, Sample A0, 1.5V Ref, Set P1.0 if A0 > 0.2V
//
//  Description: A single sample is made on A0 with reference to internal
//  1.5V Vref. Software sets ADC10SC to start sample and conversion - ADC10SC
//  automatically cleared at EOC. ADC10 internal oscillator times sample (16x)
//  and conversion. In Mainloop MSP430 waits in LPM0 to save power until ADC10
//  conversion complete, ADC10_ISR will force exit from LPM0 in Mainloop on
//  reti. If A0 > 0.2V, P1.0 set, else reset.
//
//             MSP430F21x2
//          -----------------
//       /|\|             XIN|-
//       | |                |
//       --|RST       XOUT|-
//          |                |
//       >---|P2.0/A0    P1.0|-->LED
//
//  A. Dannenberg
//  Texas Instruments Inc.
//  December 2007
//  Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.41A
//******************************************************************************
#include "msp430x21x2.h"

void main(void)
{
WDTCTL = WDTPW + WDTHOLD;                // Stop WDT
ADC10CTL0 = SREF_1 + ADC10SHT_2 + REFON + ADC10ON + ADC10IE;
TACCR0 = 30;                            // Delay to allow Ref to settle
TACCTL0 |= CCIE;                         // Compare-mode interrupt.
TACTL = TASSEL_2 + MC_1;                // TACLK = SMCLK, Up mode.
__bis_SR_register(CPUOFF + GIE);       // LPM0, TA0_ISR will force exit
TACCTL0 &= ~CCIE;                      // Disable timer Interrupt
ADC10AE0 |= 0x01;                      // P2.0 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 < 0x88)                   // ADC10MEM = A0 > 0.2V?
   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)
}

#pragma vector=TIMERA0_VECTOR
__interrupt void TA0_ISR(void)
{
TACTL = 0;
LPM0_EXIT;                               // Exit LPM0 on return
}