msp430g2553多路数据采集器.doc

基于MSP430G2553的多路数据采集班级:科技1201班姓名：石思恩学号：05122015日期：2014/12/101 实验题目：基于msp430G2553的多路数据采集。2 实验目的：8通道精密模拟量数据采集器采集8路模拟量输入信号。任一时刻，多路模拟开关选择其中一路输入信号，该信号通过信号调理电路调理后，送入AD转换器转换成数字量，该数字量在lcd12864显示。3 实验内容：1. 实验原理：在本数据采集系统的设计中为了提高系统智能化、可靠性和实用性，采用单片MCU和上位机传输的方法，即MCU运行在数据采集系统的远端，完成数据的采集、处理、发送和显示，上位机则完成数据的接收、校验及显示，同时上位机可对远端MCU进行控制，使其采集方式可选。MCU选用TI公司的低功耗MSP430G2553，该单片机比80C51功能要强大许多，他内部不仅有8路12位AD，而且还带LCD的驱动，节省了不少外围电路。本系统采用信号发生器产生正弦波，然后由LM358芯片实现对电压的放大，之间还需对信号进行调理以符合系统要求。2. 实验步骤：1.实验系统框图：2.放大电路：3.源程序：#include #define uchar unsigned char#define uint unsigned int#define cs_1 P2OUT|=BIT5#define cs_0 P2OUT&=BIT5#define sid_1 P2OUT|=BIT3#define sid_0 P2OUT&=BIT3#define en_1 P2OUT|=BIT4#define en_0 P2OUT&=BIT4uchar num18, a5,m5,n5;double result4,AD_result4;int position=0;int status=0;int flag=0;int jiaquan=0;float sample;void delayr(void);void delays(void);void adc10_begin();void adc10_ceshi();void temar_ceshi();void adc10_ceshi1();void adc10_ceshi2();const uchar line1=电压为 V;const uchar line2=电压为 V;const uchar line3=电压为 V;const uchar line4=电压为 V;void IO_Init(void) P2SEL=0x00;/ 2553将其初始化为晶振输入端，所以要关掉第二功能选择 P2DIR|=0xff;/将其置为输出方向 P2OUT=0x00;/输出0void delay(uint x) uint i,j; for(i=0;ix;i+) for(j=0;j100;j+);void write_cmd(uchar command_data) uchar i; uchar i_data; i_data=0xf8; cs_1; en_0; for(i=0;i8;i+) if(i_data & 0x80) sid_1; else sid_0; en_0; en_1; i_data=1; i_data=command_data; i_data&=0xf0; for(i=0;i8;i+) if(i_data & 0x80) sid_1; else sid_0; en_0; en_1; i_data=1; i_data=command_data; i_data=4; for(i=0;i8;i+) if(i_data & 0x80) sid_1; else sid_0; en_0; en_1; i_data=1; cs_0; delay(10);void write_data(uchar command_data) uchar i; uchar i_data; i_data=0xfa; cs_1; en_0; for(i=0;i8;i+) if(i_data & 0x80) sid_1; else sid_0; en_0; en_1; i_data=1; i_data=command_data; i_data&=0xf0; for(i=0;i8;i+) if(i_data & 0x80) sid_1; else sid_0; en_0; en_1; i_data=1; i_data=command_data; i_data=4; for(i=0;i8;i+) if(i_data & 0x80) sid_1; else sid_0; en_0; en_1; i_data=1; cs_0; delay(10);void LCD_Init (void) delay(10); write_cmd(0x30); delay(10); write_cmd(0x0c); delay(10); write_cmd(0x01); delay(5);void LCD_pos(unsigned char X,unsigned char Y) unsigned char pos; if(X=0) X = 0x80; else if(X=1) X = 0x90; else if(X=2) X = 0x88; else if(X=3) X = 0x98; pos = X + Y; write_cmd(pos);void Display_Init (void) unsigned char i; LCD_pos(0,0); i=0; while(line1i!= 0) write_data(line1i); i+; LCD_pos(1,0); i=0; while(line2i!= 0) write_data(line2i); i+; LCD_pos(2,0); i=0; while(line3i!= 0) write_data(line3i); i+; LCD_pos(3,0); i=0; while(line4i!= 0) write_data(line4i); i+; void ADC10_init() WDTCTL = WDTPW + WDTHOLD; / Stop WDT P2SEL=0x00; P2DIR |= 0xff; / Set P1.0 to output direction P1DIR |= 0x38; P1SEL|=BIT0+BIT1+BIT2; ADC10AE0|=BIT0+BIT1+BIT2+BIT5; / 使P1.0允许AD模拟输入信号 ADC10CTL0=ADC10ON+MSC+SREF_0;/+REFON 开AD内核，选择电源为参考电压 ADC10CTL1=ADC10SSEL_0+CONSEQ_0; /+INCH_1+INCH_2 选择ADC12SC为触发源,选择系统时钟为AD内核时钟，采用单通道多次采用 void adc10_begin(void) ADC10CTL1|=INCH_0; ADC10CTL0|=ADC10SC+ENC; / 开始转换 开转换允许 while(ADC10CTL1&ADC10BUSY!=0);/判断是否转换完毕 result0= ADC10MEM; AD_result0=(result0/1024)*3.485; ADC10CTL0&=(ADC10SC+ENC); /关转换允许才能选择通道 ADC10CTL1&=INCH_0; /通道清0 ADC10CTL1|=INCH_1; ADC10CTL0|=ADC10SC+ENC; while(ADC10CTL1&ADC10BUSY!=0); result1= ADC10MEM; AD_result1=(result1/1024)*3.485; ADC10CTL0&=(ADC10SC+ENC); ADC10CTL1&=INCH_1; ADC10CTL1|=INCH_2; ADC10CTL0|=ADC10SC+ENC; while(ADC10CTL1&ADC10BUSY!=0); result2= ADC10MEM; AD_result2=(result2/1024)*3.485; ADC10CTL0&=(ADC10SC+ENC); ADC10CTL1&=INCH_2; ADC10CTL1|=INCH_5; ADC10CTL0|=ADC10SC+ENC; / 开始转换 开转换允许 while(ADC10CTL1&ADC10BUSY!=0);/判断是否转换完毕 result3= ADC10MEM; AD_result3=(result3/1024)*3.485; ADC10CTL0&=(ADC10SC+ENC); /关转换允许才能选择通道 ADC10CTL1&=INCH_5; /通道清0void adc10_ceshi(void) uchar p,q,e; ADC10_init(); adc10_begin(); a0=(int)AD_result0; a1=a0%10; a2=(int)(AD_result0-a0)*10); a3=(int)(AD_result0*100)%10; a4=(int)(AD_result0*1000)%10; LCD_pos(0,5); for(p=0;p4;p+) write_data(ap); delay(2000); m0=(int)AD_result1; m1=m0%10; m2=(int)(AD_result1-m0)*10); m3=(int)(AD_result1*100)%10; m4=(int)(AD_result1*1000)%10; LCD_pos(1,5); for(e=0;e4;e+) write_data(mp); delay(2000); n0=(int)AD_result2; n1=n0%10; n2=(int)(AD_result2-n0)*10); n3=(int)(AD_result2*100)%10; n4=(int)(AD_result2*1000)%10; LCD_pos(2,5); for(q=0;q4;q+) write_data(np); delay(2000);void main() WDTCTL = WDTPW+WDTHOLD;/关闭看门狗 IO_Init(); LCD_Init(); Display_Init();/对LCD进行初始化，设置一个开机初始化显示 _EINT(); while(1) temar_ceshi(); delay(1000); ADC10CTL0&=(ADC10SC+ENC); /关转换允许才能选择通道 ADC10CTL1&=INCH_0; /通道清0 adc10_ceshi(); delay(1000); ADC10CTL0&=(ADC10SC+ENC); /关转换允许才能选择通道 ADC10CTL1&=INCH_1; /通道清0 temar_ceshi1(); delay(1000); ADC10CTL0&=(ADC10SC+ENC); /关转换允许才能选择通道 ADC10CTL1&=INCH_2; /通道清0 adc10_ceshi1(); delay(1000); ADC10CTL0&=(ADC10SC+ENC); /关转换允许才能选择通道 ADC10CTL1&=INCH_3; /通道清0 void delayr(void) unsigned long data_delay; for(data_delay=0;data_delay100000;data_delay+) void delays(void) unsigned long data_delay; for(data_delay=0;data_delay167935;data_delay+) #pragma vector=TIMER0_A1_VECTOR_interrupt void TIMER0_A1(void) TACTL &= TAIFG; jiaquan+; 4、 试验运行结果：5、 实验中遇到的问题及解决方法：1. 测试时不能实现多路采集，只能采一组。解决方案：采用不同的通道测量，最终实现可用不同的管脚测量。2. 测试时，只测一组却出现多组显示，且出现乱码。解决法案：在