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大小: 50KB文件類型: .zip金幣: 2下載: 0 次發(fā)布日期: 2021-05-12
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使用MSP430G2553單片機(jī)控制HC-SR04超聲波模塊,將測得的距離在Nokia-5110顯示屏上顯示出來。完整的CCS編譯器下的工程文件,已經(jīng)測試過,可以使用

代碼片段和文件信息
//IAR?Assembler?for?MSP430
//??5.30.1?(5.30.1.50284)
//
//?BY:?Elitezhe
//?Southeast?University
//?School?of?Instrument?and?Engineering
//?Launchpad?+?HCSR04超聲模塊??測距離
//?連接圖:
//??ACLK?=?n/a?MCLK?=?SMCLK?=?1MHZ
//
//??????????????MSP430F5438
//????????????-----------------
//????????/|\|??????????????XIN|-
//?????????|?|?????????????????|
//?????????--|RST??????????XOUT|-
//???????????|?????????????????|
//???????????|P1.4?????????P2.5|-->LCD_RST
//???????????|?????????????P2.4|-->LCD_CE
//???????????|?????????????P2.3|-->LCD_DC
//???????????|?????????????P2.2|-->LCD_DIN
//???????????|?????????????P2.1|-->LCD_CLK
//???????????|?????????????????|
//???????????|?????????????P1.4|-->Trig
//???????????|?????????????P1.2|-->Echo
//???????????|?????????????????|
//???????????|?????????????????|
#include?“msp430g2553.h“
#include?“5110/nokia_5110.h“
#include?“stdio.h“
#define????TRIG??????????BIT4
#define????ECHO??????????BIT2???//P1.1?DIR.0=0?+?SEL.1=1?+?SEL2.1=0?-->?TA0.CCI0A
#define????USOUND_DIR????P1DIR
#define????USONUD_OUT????P1OUT
#define????USOUND_IE?????P1IE
#define????USOUND_IES????P1IES
#define????USOUND_SEL????P1SEL
unsigned?int?capV?=?0;
float????????distance;
void?BCSplus_init(void);
char?str[100];
int?main(?void?)
{
??//?Stop?watchdog?timer?to?prevent?time?out?reset
??WDTCTL?=?WDTPW?+?WDTHOLD;
??
??BCSplus_init();
??
??LCD_init();
??LCD_clear();
??LCD_write_english_string(00“USONIC?DIS?MEASURE“);
??//sprintf(str?“%x“?255);
??LCD_write_english_string(01“EliteZhe“);
??LCD_write_english_string(02“-----------------“);
??LCD_write_english_string(03“TIME:“);
??LCD_write_english_string(04“DIST:“);
??
??USONUD_OUT?|=?TRIG;
??USOUND_DIR?|=?TRIG;
??//USOUND_IES?|=?ECHO;
??USOUND_SEL?|=?ECHO?;?//CCI0A
??while(1)
??{
????TA0CTL?|=?MC_2?+?TASSEL_2?+?TACLR;?//計數(shù)?SMCLK?清計數(shù)
????TA0CCTL1?|=?CM_1?+?CAP?+?SCS?+?CCIE?+?CCIS_0;//上升沿捕獲??捕獲模式??同步模式??使能中斷?CCI0A
????
????USONUD_OUT?|=?TRIG;
//????_NOP();_NOP();_NOP();_NOP();_NOP();
//????_NOP();_NOP();_NOP();_NOP();_NOP();
//????_NOP();_NOP();_NOP();_NOP();_NOP();
????__delay_cycles(200);
????USONUD_OUT?&=?~TRIG;
????//_BIS_SR(LPM4_bits?+?GIE);?????????????????//?Enter?LPM4?w/interrupt
????
????while((TA0CCTL1?&?CCIFG)?==0);?//等待上升沿
????TA0CTL?&=?~MC_3;?//清除MC_的兩位否則?CM_1?|?CM_2?=?CM_3
????TA0CTL?|=?MC_2?+?TACLR;?//連續(xù)計數(shù)?清除TA的計數(shù)值
????TA0CCTL1?&=?~CCIFG;?//清中斷標(biāo)志
????TA0CCTL1?|=?CM_2;?//下降沿捕捉
????
????while((TA0CCTL1?&?CCIFG)?==0);?//等待下降沿
????capV?=?TA0CCR1;??//得到計數(shù)器的值
????distance?=?1.12826e-3?*?capV?;//計算距離
????sprintf(str“%4x“capV);
????LCD_write_english_string(303str);
????sprintf(str“%.3f“distance);
????LCD_write_english_string(304str);
????
????TA0CCTL1?&=?~CCIFG;?//清中斷標(biāo)志
????
????unsigned?int?xy;
????for(x=5000;x>0;x--)
??????for(y=500;y>0;y--);
??}
??return?0;
}
/****************************************
*??========?BCSplus_init?========
*??Initialize?MSP430?Basic?Clock?System
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-05-15?16:13??2553_超聲測距\
?????文件????????4292??2012-08-07?14:28??2553_超聲測距\2553.dep
?????文件???????20124??2012-08-04?09:39??2553_超聲測距\2553.ewd
?????文件???????50800??2012-08-04?09:43??2553_超聲測距\2553.ewp
?????文件?????????158??2012-08-04?09:39??2553_超聲測距\2553.eww
?????目錄???????????0??2018-05-15?16:13??2553_超聲測距\5110\
?????文件?????????480??2012-08-04?10:03??2553_超聲測距\5110\demo.c
?????文件???????18013??2012-08-04?10:01??2553_超聲測距\5110\nokia_5110.c
?????文件????????1107??2012-08-07?08:43??2553_超聲測距\5110\nokia_5110.h
?????目錄???????????0??2018-05-15?16:13??2553_超聲測距\Debug\
?????目錄???????????0??2018-05-15?16:13??2553_超聲測距\Debug\Exe\
?????文件???????37892??2012-08-07?14:19??2553_超聲測距\Debug\Exe\2553.d43
?????目錄???????????0??2012-08-04?09:38??2553_超聲測距\Debug\List\
?????目錄???????????0??2018-05-15?16:13??2553_超聲測距\Debug\Obj\
?????文件?????????231??2012-08-07?14:18??2553_超聲測距\Debug\Obj\2553.pbd
?????文件????????4112??2012-08-07?09:46??2553_超聲測距\Debug\Obj\demo.r43
?????文件???????16445??2012-08-07?14:19??2553_超聲測距\Debug\Obj\main.r43
?????文件???????29971??2012-08-07?09:46??2553_超聲測距\Debug\Obj\nokia_5110.r43
?????文件????????4421??2012-08-07?15:06??2553_超聲測距\main.c
?????文件???????????0??2012-08-07?14:19??2553_超聲測距\path.txt
?????目錄???????????0??2018-05-15?16:13??2553_超聲測距\settings\
?????文件????????1068??2012-08-07?14:26??2553_超聲測距\settings\2553.cspy.bat
?????文件????????5030??2012-08-07?14:28??2553_超聲測距\settings\2553.dbgdt
?????文件????????1313??2012-08-07?14:28??2553_超聲測距\settings\2553.dni
?????文件????????3571??2012-08-07?14:28??2553_超聲測距\settings\2553.wsdt
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