MSP430F14 44键盘中断+液晶显示程序.doc

MSP430F14 4*4键盘中断+液晶显示程序#include msp430x14x.h#define RS_H P5OUT |=BIT3 /Data Register is selected#define RS_L P5OUT &=BIT3 /Instruction Register is selected#define READ P5OUT |= BIT2 /读LCD#define WRITE P5OUT &= BIT2 /写LCD#define EN_H P5OUT |= BIT1 /Enable Read/Write Operation #define EN_L P5OUT &=BIT1 /Disable Read/Write Operationunsigned char a=Welcome! ; /定义全局数组unsigned char b=Level control!;unsigned char c=Temperature!;unsigned char d=Pressure!;unsigned char e=Liu Liang!;void Init_CLK(void)unsigned int i;BCSCTL1=0x00; /将寄存器BCSCTL1的内容清零、XT2振荡器开启、LFTX1工作在低频模式 /ACLK的分频因子为1 do IFG1&=OFIFG; /清除OSCFault标志 for(i=0x20;i0;i-);while(IFG1&OFIFG)=OFIFG);BCSCTL2=0x00; /将寄存器BCSCTL2的内容清零BCSCTL2+=SELM1;/MCLK的时钟源为XT2CLK,分频因子为1BCSCTL2+=SELS; /SMMLK的时钟源为XT2CLK,分频因子为1void Init_Port() P3SEL=0x00; /LCD所需端口设置 P3DIR=0xFF; P3OUT&=BIT5; P5SEL=0x00; /P5输出 P5DIR=0xFF; P5OUT=0x00; P4SEL=0x00; /P4输出 P4DIR=0xFF; P4OUT=0x00; /将P1口所有的管脚在初始化的时候设置为输入方式 P1DIR = 0; /将P1口所有的管脚设置为一般I/O口 P1SEL = 0; / 将P1.4 P1.5 P1.6 P1.7设置为输出方向 P1DIR |= BIT4; P1DIR |= BIT5; P1DIR |= BIT6; P1DIR |= BIT7; /先输出低电平 P1OUT = 0x00; / 将中断寄存器清零 P1IE = 0; P1IES = 0; P1IFG = 0; /打开管脚的中断功能 /对应的管脚由高到低电平跳变使相应的标志置位 P1IE |= BIT0; P1IES|= BIT0; P1IE |= BIT1; P1IES|= BIT1; P1IE |= BIT2; P1IES|= BIT2; P1IE |= BIT3; P1IES |= BIT3;void Delay(unsigned int i) /延时子程序 while(i-);void Write_Command(unsigned char command ) P4OUT=command; RS_L; /选择程序寄存器 WRITE; /允许写操作 EN_H; /液晶使能 Delay(1000);/延时 EN_L; /液晶读写操作禁止 Delay(1000); void Write_Data(unsigned char data ) P4OUT=data; RS_H; /选择数据寄存器 WRITE; /允许写操作 EN_H; /液晶使能 Delay(1000); /延时 EN_L ; /液晶读写操作禁止 Delay(1000);void Clear_Second_Line() /用于删除2*16字符液的晶第二行的函数 int i=16; Write_Command(0xC0); /设置DDRAM的初始地址 while(i-) P4OUT=0x20; RS_H; /选择数据寄存器 WRITE; /允许写操作 EN_H; /液晶使能 Delay(1000); /延时 EN_L ; /液晶读写操作禁止 Delay(1000); void Init_LCD(void) Write_Command( 0x38 );/8位总线接口，双行显示，5*7点阵型 Delay(500); Write_Command(0x0F);/开显示，开光标，光标闪烁 Delay(500); Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0x80);/设置DDRAM的初始地址int KeyProcess(void) /P5OUT&=0x00; P5OUT=0x00; Delay(30000); unsigned char nP10,nP11,nP12,nP13; nP10=0; nP11=0; nP12=0; nP13=0; int nRes = 0; /P1.7输出低电平 P1OUT = (BIT7); Delay(50); nP10 = P1IN & BIT0; if (nP10 = 0) nRes = 13; P5OUT|=BIT4; nP11 = P1IN & BIT1; if (nP11 = 0) nRes = 14; P5OUT|=BIT4; nP12 = P1IN & BIT2; if (nP12 = 0) nRes = 15; P5OUT|=BIT4; nP13 = P1IN & BIT3; if (nP13 = 0) nRes = 16; /P5OUT=0x00; P5OUT|=BIT4; /P1.6输出低电平 P1OUT = (BIT6); Delay(50); nP10 = P1IN & BIT0; if (nP10 = 0) nRes = 9; P5OUT|=BIT5; nP11 = P1IN & BIT1; if (nP11 = 0) nRes = 10; P5OUT|=BIT5; nP12 = P1IN & BIT2; if (nP12 = 0) nRes = 11; P5OUT|=BIT5; nP13 = P1IN & BIT3; if (nP13 = 0) nRes = 12; /P5OUT=0x00; P5OUT|=BIT5; /P1.5输出低电平 P1OUT = (BIT5); Delay(50); nP10 = P1IN & BIT0; if (nP10 = 0) nRes = 5; P5OUT|=BIT6; nP11 = P1IN & BIT1; if (nP11 = 0) nRes = 6; P5OUT|=BIT6; nP12 = P1IN & BIT2; if (nP12 = 0) nRes = 7; P5OUT|=BIT6; nP13 = P1IN & BIT3; if (nP13 = 0) nRes = 8; /P5OUT=0x00; P5OUT|=BIT6; /P1.4输出低电平 P1OUT = (BIT4); nP10 = P1IN & BIT0; if (nP10 = 0) nRes = 1; P5OUT|=BIT7; nP11 = P1IN & BIT1; if (nP11 = 0) nRes = 2; P5OUT|=BIT7; nP12 = P1IN & BIT2; if (nP12 = 0) nRes = 3; P5OUT|=BIT7; nP13 = P1IN & BIT3; if (nP13 = 0) nRes = 4; P5OUT|=BIT7; P1OUT = 0x00;/恢复以前值。 /读取各个管脚的状态 for(;) if(P1IN&0x0F)=0x0F ) break;/等待松开按键 return nRes;/ 处理来自端口 1 的中断#pragma vector=PORT1_VECTOR_interrupt void PORT1_ISR(void) int key_value; Delay(30000); key_value=KeyProcess(); switch(key_value) case 1: / Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(8); break; case 2: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(4); break; case 3: / Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(0); break; case 4: Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0x80);/设置DDRAM的初始地址 for(unsigned int i=0;b!=0;i+) /在液晶第二行输出 Write_Data(b); break; case 5: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(9); break; case 6: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(5); break; case 7: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(1); break; case 8: Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0x80);/设置DDRAM的初始地址 for(unsigned int i=0;c!=0;i+) /在液晶第二行输出 Write_Data(c); break; case 9: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(.); break; case 10: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(6); break; case 11: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(2); break; case 12: Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0x80);/设置DDRAM的初始地址 for(unsigned int i=0;d!=0;i+) /在液晶第二行输出 Write_Data(d); break; case 13: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(a); break; case 14: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设置DDRAM的初始地址 Write_Data(7); break; case 15: /Write_Command(0x01);/清屏，将空格字符ASCII码20H写入到所有的DDRAM单元 Clear_Second_Line(); Delay(5000); Write_Command(0x06);/设置进入方式，DDRAM自增，整个显示右移 Delay(500); Write_Command(0xC0); /设