MSP430程序

ADC12CTL0 &= ~ENC//关闭转换允许位，进行ADC初始化设置

P6SEL = 0x7F //管脚功能选择成ADC

ADC12CTL0=ADC12ON+MSC+SHT0_2+REFON+REF2_5V//打开ADC内核/连续采样/采样率设置/打开内部参考电压源/选择2.5V参考电压

ADC12CTL1 = SHP+CONSEQ_1 //采样信号来自采样定时器/序列通道单次转换模式

ADC12MCTL0 = INCH_0+SREF_1 //通道0/参考电压源选择内部参考电压

ADC12MCTL1 = INCH_1+SREF_1

ADC12MCTL2 = INCH_2+SREF_1

ADC12MCTL3 = INCH_3+SREF_1

ADC12MCTL4 = INCH_4+SREF_1

ADC12MCTL5 = INCH_5+SREF_1

ADC12MCTL6 = INCH_6+SREF_1+EOS//EOS序列转换结束

ADC12IE = 0x40 //使能ADC中断

ADC12CTL0 |= ENC//允许转换

ADC12CTL0 |= ADC12SC//开始转换

_EINT() //全局中断使能 }

interrupt[ADC_VECTOR] void ADC12ISR (void)

{

results[0] = ADC12MEM0 //将通道0采样结果读出，赋给RESULTS数组

results[1] = ADC12MEM1

results[2] = ADC12MEM2

results[3] = ADC12MEM3

results[4] = ADC12MEM4

results[5] = ADC12MEM5

results[6] = ADC12MEM6

#include <msp430x44x.h>

void main(void)

{

WDTCTL = WDTPW + WDTHOLD// Stop WDT

//串口初始化

FLL_CTL0 |= XCAP18PF// Configure load caps

P2SEL |= 0x30 // P2.4,5 = USART0 TXD/RXD

ME1 |= UTXE0 + URXE0// Enable USART0 TXD/RXD

UCTL0 |= CHAR // 8-bit character

UTCTL0 |= SSEL1 // UCLK = SMCLK

UBR00 = 0x36// 1MHz 19200

UBR10 = 0x00// 1MHz 19200

UMCTL0 = 0x6B // Modulation

UCTL0 &= ~SWRST // Initialize USART state machine

unsigned int adtable[256]

unsigned int i

unsigned int AD_Times

AD12Init()

ADC12CTL0 |= ENC //enable conversion

ADC12CTL0 |= ADC12SC // Sampling open

while(1)

{

If (AD_Times==256)

{

for(i=0i<256i++)

{

TXBUF0 = adtable[i] //Send by 2 Bytes

adtable[i]>>8

TXBUF0 = adtable[i]

}

}

}

void AD12Init（void）

{

P6SEL |= 0x01 // P6.0 ADC option select

ADC12CTL0 &= ~ENC

ADC12CTL0 = SHT0_6 + ADC12ON+MSC+REFON+REF2_5V// set the register

ADC12CTL1 = SHP+CONSEQ_2 // Use sampling timer

ADC12MCTL0 = SREF_1+INCH_0

ADC12CTL0 |= ENC// Conversion enabled

ADC12IE = 0x01 //interrupt

}

#pragma vector=ADC_VECTOR

__interrupt void ADC12_ISR (void)

{

vu32 temp

temp = ADC12MEM0

adtable[AD_Times] = temp *2500/4095 // change to mv Value

AD_Times++

if(AD_Times == 256)

{

ADC12CTL0 &= ~ENC

ADC12CTL0 &= ~ADC12SC

}

应该是这个样子的，没调试过，有错误自己搞定吧

100HZ，直接用MSP430的内部ADC模块就可以采集了，可以每个周期采64个点，也就是大概1.5625ms进行一次采样，这个采样率MCU完全可以承受得了。

MSP430的内部ADC的使用例程，你可以到TI官网去下载，然后开一个定时器，每隔1.5625ms进行一次ADC采样，每采一次，保存到数组中（真浪费RAM资源）。采够200就停止就可以了

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