單片機(jī)應(yīng)用技術(shù)-基于STC15系列單片機(jī) 課件 2.3 聲光報(bào)警器的實(shí)現(xiàn)

任務(wù)2-3聲光報(bào)警器的實(shí)現(xiàn)任務(wù)介紹任務(wù)：實(shí)現(xiàn)一個(gè)開(kāi)關(guān)控制1個(gè)LED發(fā)光二極管和1個(gè)有源蜂鳴器。初始狀態(tài)下，開(kāi)關(guān)斷開(kāi)，LED燈熄滅，蜂鳴器不發(fā)聲；當(dāng)開(kāi)關(guān)閉合時(shí)，LED燈閃爍并且蜂鳴器滴滴鳴叫，實(shí)現(xiàn)聲光報(bào)警。任務(wù)軟件設(shè)計(jì)開(kāi)關(guān)SW模塊LED燈器件名稱功能分配I/O口開(kāi)關(guān)SW輸入P3.2發(fā)光二極管LED輸出P1.0蜂鳴器輸出P3.6蜂鳴器任務(wù)硬件設(shè)計(jì)開(kāi)關(guān)控制多燈閃爍仿真器件清單序號(hào)名稱Proteus中元件名參數(shù)數(shù)量1單片機(jī)STC15W4K32S412LED發(fā)光二極管LED-BIGY13PNP三極管2N70314有源蜂鳴器BUZZER15電阻RES1kΩ26電阻RES10kΩ17開(kāi)關(guān)SWITCH1任務(wù)硬件設(shè)計(jì)任務(wù)軟件設(shè)計(jì)01開(kāi)始P1.0和P3.6跟隨P3.2口的狀態(tài)值P1.0和P3.6口置1延時(shí)延時(shí)任務(wù)軟件設(shè)計(jì)#include<stc15.h>//包含stc15頭文件voiddelay_ms(unsignedintms);//函數(shù)聲明#defineMAIN_Fosc11059200L//定時(shí)主時(shí)鐘

voidmain() //主函數(shù)

{bitsta_sw;P1M0=0x00;P1M1=0x00;P3M0=0x00;P3M1=0x00;}while(1){sta_sw=S1;

}D1=sta_sw;BUZZ=sta_sw; delay_ms(500);sbitS1=P3^2;sbitD1=P1^0;sbitBUZZ=P3^6;開(kāi)始P1.0和P3.6跟隨P3.2口的狀態(tài)值P1.0和P3.6口置1延時(shí)延時(shí)D1=1;BUZZ=1; delay_ms(500);任務(wù)軟件設(shè)計(jì)#include<stc15.h>//包含stc15頭文件voiddelay_ms(unsignedintms);//函數(shù)聲明#defineMAIN_Fosc11059200L//定時(shí)主時(shí)鐘

sbitS1=P3^2;sbitD1=P1^0;sbitBUZZ=P3^6;voidmain() //主函數(shù)

{bitsta_sw;P1M0=0x00;P1M1=0x00;P3M0=0x00;P3M1=0x00;

while(1){ sta_sw=S1; D1=sta_sw;BUZZ=sta_sw; delay_ms(500); D1=1;BUZZ=1; delay_ms(500); }}//延時(shí)ms*1毫秒函數(shù)voiddelay_ms(unsignedintms){unsignedinti;do{ i=MAIN_Fosc/13000; while(--i);

}while(--ms);}軟硬件調(diào)試STC15W4KS32單片機(jī)的并行I/O口開(kāi)關(guān)SW模塊LED燈模塊器件引腳輸入開(kāi)關(guān)SWP3.2輸出LED發(fā)光二極管P1.0輸出蜂鳴器P3.6I/O位名稱P0P0.0~P0.7P1P1.0~P1.7P2P2.0~P2.7P3P3.0~P3.7P4P4.0~P4.7P5P5.3\P5.4蜂鳴器STC15W4KS32單片機(jī)的并行I/O口PnM1[7:0](n=0,1,2,3,4,5)PnM0[7:0](n=0,1,2,3,4,5)工作模式00準(zhǔn)雙向口01推挽輸出10高阻輸入11開(kāi)漏輸出I/O口寄存器名稱P0P0M1、P0M0P1P1M1、P1M0P2P2M1、P2M0P3P3M1、P3M0P4P4M1、P4M0P5P5M1、P5M0STC15W4KS32單片機(jī)的并行I/O口工作模式描述準(zhǔn)雙向口傳統(tǒng)8051單片機(jī)I/O口模式，灌電流可達(dá)20mA，拉電流為150uA~270uA。推挽輸出強(qiáng)上拉輸出，拉電流可達(dá)20mA，需外接限流電阻。高阻輸入電流既不能流入也不能流出。開(kāi)漏輸出內(nèi)部上拉電阻斷開(kāi)，開(kāi)漏模式既可讀外部狀態(tài)也可對(duì)外輸出（高電平或低電平）。如果要正確讀外部狀態(tài)或需要對(duì)外輸出高電平，需要外加上拉電阻，否則讀不到外部狀態(tài)，也對(duì)外輸不出高電平。STC15W4KS32單片機(jī)的并行I/O口配置位配置值工作模式P0M1.7P0M0.700P0.7準(zhǔn)雙向口P0M1.6P0M0.610P0.6高阻輸入P0M1.5P0M0.501P0.5推挽輸出P0M1.4P0M0.411P0.4開(kāi)漏輸出P0M1.3(2/1/0)P0M0.3(2/1/0)00P0.3~P0.0準(zhǔn)雙向口IO_Init()//P0口工作模式配置函數(shù){ P0M0=0x30; //00110000P0M1=0x50;//01010000}I/O口寄存器名稱P0P0M1、P0M0P1P1M1、P1M0P2P2M1、P2M0P3P3M1、P3M0P4P4M1、P4M0P5P5M1、P5M0STC15W4KS32單片機(jī)的并行I/O口引腳名稱前一次ISP燒錄程序時(shí)的功能上電復(fù)位后I/O口工作模式P1.6/XTAL2XTAL2高阻輸入P1.6準(zhǔn)雙向口P1.7/XTAL1XTAL1高阻輸入P1.7準(zhǔn)雙向口P5.4/RSTRST復(fù)位腳P5.4準(zhǔn)雙向口STC15W4KS32單片機(jī)的并行I/O口P1口和P3口：準(zhǔn)雙向口。STC15單片機(jī)的準(zhǔn)雙向口模式端口寄存器引腳晶體管狀態(tài)11極弱上拉、弱上拉晶體管打開(kāi)10極弱上拉打開(kāi)，弱上拉關(guān)閉1懸空極弱上拉打開(kāi)0到1跳變0到1跳變強(qiáng)上拉打開(kāi)，加快引腳上0到1的跳變。1001001STC15單片機(jī)的準(zhǔn)雙向口模式010110準(zhǔn)雙向口：作為普通輸入口使用時(shí)，必須先向端口鎖存器寫“1”，使得接地的晶體管截止，以避免鎖存器為“0”狀態(tài)對(duì)引腳讀入的干擾。STC15單片機(jī)的準(zhǔn)雙向口模式P3.2口：準(zhǔn)雙向口模式輸入口。voidmain() //主函數(shù)

{bitsta_sw;P1M0=0x00;P1M1=0x00;P3M0=0x00;P3M1=0x00;

while(1){ sta_sw=S1; D1=sta_sw;BUZZ=sta_sw; delay_ms(500); D1=1;BUZZ=1; delay_ms(500); }}C51運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符算術(shù)運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符+，-*，/，%乘號(hào)”*“不可省略。C51表達(dá)式:10*value數(shù)學(xué)表達(dá)式:10value算術(shù)運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符+，-*，/，%參與取余運(yùn)算的運(yùn)算對(duì)象必須都是整型數(shù)，運(yùn)算結(jié)果等于兩個(gè)整數(shù)相除后的余數(shù)。19/10C51表達(dá)式的值是119.0/10C51表達(dá)式的值是1.9對(duì)整型數(shù)進(jìn)行除法運(yùn)算時(shí)，結(jié)果向零取整。對(duì)實(shí)型數(shù)進(jìn)行除法運(yùn)算，結(jié)果為實(shí)型數(shù)。算術(shù)運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符+，-*，/，%min/10min%10算術(shù)運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符++,--voiddelay_ms(unsignedintms){unsignedinti;do{ i=MAIN_Fosc/13000; while(--i);

}while(--ms);}i=i-1;while(i);前綴形式后綴形式關(guān)系運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符>、>=、<、<===，!=voidmain() {

while(1){if(SW==0) { …… }else …… }}邏輯運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符&&、||、！賦值運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符簡(jiǎn)單賦值運(yùn)算符復(fù)合賦值運(yùn)算符變量=

常量或變量或表達(dá)式=賦值運(yùn)算符#include<stc15.h>//包含stc15頭文件voiddelay_ms(unsignedintms);//函數(shù)聲明#defineMAIN_Fosc11059200L//定時(shí)主時(shí)鐘

#defineSWP32voidmain() //主函數(shù)

{bitsta_sw;P1M0=0x00;P1M1=0x00;P3M0=0x00;P3M1=0x00;

while(1){ sta_sw=S1; D1=sta_sw;BUZZ=sta_sw; delay_ms(500); D1=1;BUZZ=1; delay_ms(500); }}//延時(shí)ms*1毫秒函數(shù)voiddelay_ms(unsignedintms){unsignedinti;do{ i=MAIN_Fosc/13000; while(--i);

}while(--ms);}賦值運(yùn)算符賦值運(yùn)算符算術(shù)運(yùn)算符邏輯運(yùn)算符基本運(yùn)算符關(guān)系運(yùn)算符位運(yùn)算符簡(jiǎn)單賦值運(yùn)算符復(fù)合賦值運(yùn)算符+=、-=、*=、/=、