launchpad超声波测距(摘自91MCU).doc

原文标题：用LaunchPad做了一个超声波测距，带5110驱动（ZT）本文来自|：/9mcubbs/forum.php?mod=viewthread&tid=963929#include#includeheader.hchar flag_time = 0;long TIME0 = 0, TIME1 = 0; /存放时间的函数long L_juli = 0; long l = 0; char ge,shi,bai,qian;/时钟初始化void CLK_Init(void) if (CALBC1_8MHZ =0xFF | CALDCO_8MHZ = 0xFF) while(1); / If calibration constants erased / do not load, trap CPU! BCSCTL1 = CALBC1_8MHZ; / Set range DCOCTL = CALDCO_8MHZ; / Set DCO step + modulation */ BCSCTL2 |= 0X02; /SMCLK为DCO的2分频，4M/端口初始化void GPIO_Init(void) P1DIR |= 0xf0; P2DIR |= 0x03; /P2.3作为捕获输入 P2SEL |= 0x08; P2DIR |= 0x04; /P2.2作为触发端，设为输出 P2OUT &= 0xfb; /P2.2输出低电平 P1IES = 0x08; /P1.3为下降沿触发中断 P1IE = 0x08; /P1.3中断允许 P1IFG = 0x00; /清除中断标志/定时器TIME1_A3初始化函数void TIME1_A3_Init(void) TA1CTL |= TASSEL1 + MC_2; /SMCLK作为时钟源，连续计数模式 TA1CCTL0 |= CM_3 + CCIS_1 + SCS + CAP + CCIE; /上升沿与下降沿都捕获， /输入源为CCI0B，同步捕获模式，使能中断/主函数int main(void) WDTCTL = WDTPW + WDTHOLD; /关闭看门狗定时器 CLK_Init(); GPIO_Init(); TIME1_A3_Init(); LCD5110_Init(); LCD5110_Clear_All(); LCD5110_SET_XY(0, 1); Write_String(table1); LCD5110_BL_H; _EINT(); /中断使能 while(1) LPM0; _NOP(); /定时器Timer1_A CCR0中断服务函数#pragma vector = TIMER1_A0_VECTOR_interrupt void TIMER1_A0_ISR(void) if (flag_time = 0) P2OUT &= 0x04; /P2.2输出低电平 TIME0 = TA1CCR0; flag_time +; else TIME1 = TA1CCR0; flag_time = 0; if (TIME1 TIME0) TIME1 = TIME1 - TIME0; else TIME1 = TIME1 + (65535 - TIME0); l = TIME1*170; L_juli = l/4000; ge = L_juli % 10 + 48; shi = (L_juli/10) % 10 + 48; bai = (L_juli/100) % 10 + 48; qian = (L_juli/1000) % 10 + 48; LCD5110_Clear(4); LCD5110_SET_XY(0, 4); Write_Char(qian); Write_Char(bai); Write_Char(shi); Write_Char(ge); /P1口中断服务函数#pragma vector = PORT1_VECTOR_interrupt void P1_ISR(void) switch (P1IFG) case 0x01: P1IFG &= 0x01; break; case 0x02: P1IFG &= 0x02; break; case 0x04: P1IFG &= 0x04; break; case 0xF8: P2OUT |= 0x04; /P2.2输出高电平 P1IFG &= 0x08; break; case 0x10: P1IFG &= 0x10; break; case 0x20: P1IFG &= 0x20; break; case 0x40: P1IFG &= 0x40; break; case 0x80: P1IFG &= 0x80; break; default : P1IFG = 0x00; break; /*/*显示部分自己修改即可*/*/header.h#ifndef _HEADER_H#define _HEADER_H/* LCD函数声明*/#define LCD5110_CE_H P1OUT |= 0x80 /5110片选P1.7置位 #define LCD5110_CE_L P1OUT &= 0x7f /5110片选P1.7复位#define LCD5110_DC_H P1OUT |= 0x40 /5110数据命令选择端P1.6置位 #define LCD5110_DC_L P1OUT &= 0xbf /5110数据命令选择端P1.6复位#define LCD5110_DIN_H P1OUT |= 0x20 /5110数据输入端P1.5置位 #define LCD5110_DIN_L P1OUT &= 0xdf /5110数据输入端P1.5复位#define LCD5110_CLK_H P1OUT |= 0x10 /5110数据命令选择端P1.4置位 #define LCD5110_CLK_L P1OUT &= 0xef /5110数据命令选择端P1.4复位#define LCD5110_BL_H P2OUT |= 0x02 /5110背光控制端P2.1置位 #define LCD5110_BL_L P2OUT &= 0xfd /5110背光控制端P2.1复位#define LCD5110_RES_H P2OUT |= 0x01 /5110背光控制端P2.0置位 #define LCD5110_RES_L P2OUT &= 0xfe /5110背光控制端P2.0复位#define LCD_CMD 0x00#define LCD_DATA 0xffextern void DELAYms(unsigned int time); /延时ms函数extern void LCD5110_SET_XY(char x, char y); /写坐标函数extern void LCD5110_Init(void); /屏幕初始化extern void LCD5110_Clear(unsigned char L); /清除指定行extern void LCD5110_Clear_All(void); /清除全屏extern void Write_Char(char c); /写一个ASCII字符extern void Write_String(const char *p); /写字符串/* ASCII字符库 8*6*/const char ASCII_8X6926;#endif55110.c#include#include#includeheader.h/* ASCII字符库 8*6*/const char ASCII_8X6926= 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 , / sp 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00 , / ! 0x00, 0x00, 0x07, 0x00, 0x07, 0x00 , / 0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14 , / # 0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12 , / $ 0x00, 0x62, 0x64, 0x08, 0x13, 0x23 , / % 0x00, 0x36, 0x49, 0x55, 0x22, 0x50 , / & 0x00, 0x00, 0x05, 0x03, 0x00, 0x00 , / 0x00, 0x00, 0x1c, 0x22, 0x41, 0x00 , / ( 0x00, 0x00, 0x41, 0x22, 0x1c, 0x00 , / ) 0x00, 0x14, 0x08, 0x3E, 0x08, 0x14 , / * 0x00, 0x08, 0x08, 0x3E, 0x08, 0x08 , / + 0x00, 0x00, 0x00, 0xA0, 0x60, 0x00 , / , 0x00, 0x08, 0x08, 0x08, 0x08, 0x08 , / - 0x00, 0x00, 0x60, 0x60, 0x00, 0x00 , / . 0x00, 0x20, 0x10, 0x08, 0x04, 0x02 , / / 0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E , / 0 0x00, 0x00, 0x42, 0x7F, 0x40, 0x00 , / 1 0x00, 0x42, 0x61, 0x51, 0x49, 0x46 , / 2 0x00, 0x21, 0x41, 0x45, 0x4B, 0x31 , / 3 0x00, 0x18, 0x14, 0x12, 0x7F, 0x10 , / 4 0x00, 0x27, 0x45, 0x45, 0x45, 0x39 , / 5 0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30 , / 6 0x00, 0x01, 0x71, 0x09, 0x05, 0x03 , / 7 0x00, 0x36, 0x49, 0x49, 0x49, 0x36 , / 8 0x00, 0x06, 0x49, 0x49, 0x29, 0x1E , / 9 0x00, 0x00, 0x36, 0x36, 0x00, 0x00 , / : 0x00, 0x00, 0x56, 0x36, 0x00, 0x00 , / ; 0x00, 0x08, 0x14, 0x22, 0x41, 0x00 , / 0x00, 0x02, 0x01, 0x51, 0x09, 0x06 , / ? 0x00, 0x32, 0x49, 0x59, 0x51, 0x3E , / 0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C , / A 0x00, 0x7F, 0x49, 0x49, 0x49, 0x36 , / B 0x00, 0x3E, 0x41, 0x41, 0x41, 0x22 , / C 0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C , / D 0x00, 0x7F, 0x49, 0x49, 0x49, 0x41 , / E 0x00, 0x7F, 0x09, 0x09, 0x09, 0x01 , / F 0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A , / G 0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F , / H 0x00, 0x00, 0x41, 0x7F, 0x41, 0x00 , / I 0x00, 0x20, 0x40, 0x41, 0x3F, 0x01 , / J 0x00, 0x7F, 0x08, 0x14, 0x22, 0x41 , / K 0x00, 0x7F, 0x40, 0x40, 0x40, 0x40 , / L 0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F , / M 0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F , / N 0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E , / O 0x00, 0x7F, 0x09, 0x09, 0x09, 0x06 , / P 0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E , / Q 0x00, 0x7F, 0x09, 0x19, 0x29, 0x46 , / R 0x00, 0x46, 0x49, 0x49, 0x49, 0x31 , / S 0x00, 0x01, 0x01, 0x7F, 0x01, 0x01 , / T 0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F , / U 0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F , / V 0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F , / W 0x00, 0x63, 0x14, 0x08, 0x14, 0x63 , / X 0x00, 0x07, 0x08, 0x70, 0x08, 0x07 , / Y 0x00, 0x61, 0x51, 0x49, 0x45, 0x43 , / Z 0x00, 0x00, 0x7F, 0x41, 0x41, 0x00 , / 0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55 , / 55 0x00, 0x00, 0x41, 0x41, 0x7F, 0x00 , / 0x00, 0x04, 0x02, 0x01, 0x02, 0x04 , / 0x00, 0x40, 0x40, 0x40, 0x40, 0x40 , / _ 0x00, 0x00, 0x01, 0x02, 0x04, 0x00 , / 0x00, 0x20, 0x54, 0x54, 0x54, 0x78 , / a 0x00, 0x7F, 0x48, 0x44, 0x44, 0x38 , / b 0x00, 0x38, 0x44, 0x44, 0x44, 0x20 , / c 0x00, 0x38, 0x44, 0x44, 0x48, 0x7F , / d 0x00, 0x08, 0x7E, 0x09, 0x01, 0x02 , / f 0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C , / g 0x00, 0x7F, 0x08, 0x04, 0x04, 0x78 , / h 0x00, 0x00, 0x44, 0x7D, 0x40, 0x00 , / i 0x00, 0x40, 0x80, 0x84, 0x7D, 0x00 , / j 0x00, 0x7F, 0x10, 0x28, 0x44, 0x00 , / k 0x00, 0x00, 0x41, 0x7F, 0x40, 0x00 , / l 0x00, 0x7C, 0x04, 0x18, 0x04, 0x78 , / m 0x00, 0x7C, 0x08, 0x04, 0x04, 0x78 , / n 0x00, 0x38, 0x44, 0x44, 0x44, 0x38 , / o 0x00, 0xFC, 0x24, 0x24, 0x24, 0x18 , / p 0x00, 0x18, 0x24, 0x24, 0x18, 0xFC , / q 0x00, 0x7C, 0x08, 0x04, 0x04, 0x08 , / r 0x00, 0x48, 0x54, 0x54, 0x54, 0x20 , / s 0x00, 0x04, 0x3F, 0x44, 0x40, 0x20 , / t 0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C , / u 0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C , / v 0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C , / w 0x00, 0x44, 0x28, 0x10, 0x28, 0x44 , / x 0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C , / y 0x00, 0x44, 0x64, 0x54, 0x4C, 0x44 , / z 0x14, 0x14, 0x14, 0x14, 0x14, 0x14 / horiz lines;void DELAYms(unsigned int time) unsigned int i,n; for (n = time; n 0; n -) for (i = 4000; i 0; i -) _NOP(); /写1字节数据或命令函数void LCD5110_WriteByte(char WriteData, char Cmd_Data) unsigned int i; LCD5110_CE_L; if (Cmd_Data) LCD5110_DC_H; else LCD5110_DC_L; for (i = 0; i 8; i +) if (WriteData & 0x80) LCD5110_DIN_H; else LCD5110_DIN_L; WriteData = 1; LCD5110_CLK_L; _NOP(); LCD5110_CLK_H; LCD5110_DC_H; LCD5110_CE_H; LCD5110_DIN_H; /P1IFG = 0X00;/写入坐标地址void LCD5110_SET_XY(char x, char y) LCD5110_WriteByte(0x40|y, 0); /设置y轴的坐标，y的范围为05 LCD51