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//跟堂作業(yè):秒表#include <>typedef signed char i8;typedef unsigned char u8;typedef signed int i16;typedef unsigned int u16;typedef signed long i32;typedef unsigned long u32;sbit ADDR3 = P1 ^ 3;sbit ENLED = P1 ^ 4;sbit KEY1 = P2 ^ 4;sbit KEY2 = P2 ^ 5;sbit KEY3 = P2 ^ 6;sbit KEY4 = P2 ^ 7;u8 code LedChar[16] ={?? ?0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,?? ?0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E};u8 LedBuff[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};u8 KeySta[4] = {1, 1, 1, 1};u8 TH0RL = 0;u8 TL0RL = 0;bit StopWatchRefresh = 1; // 0=不需要刷新,1=需要刷新數(shù)碼管u8 DecimalPart = 0;?? ?? // 小數(shù)部分u16 IntegerPart = 0;?? ?? // 整數(shù)部分bit StopWatchRunning = 0; // 0=停,1=正在工作void ConfigTimer0(u16 ms){?? ?u32 tmp;?? ?tmp = 11059200 / 12;?? ?tmp = tmp * ms / 1000;?? ?tmp = 65536 - tmp;?? ?tmp += 18; // 補償值?? ?TH0 = TH0RL = (u8)(tmp >> 8);?? ?TL0 = TL0RL = (u8)tmp;?? ?TMOD ^= 0xF0;?? ?TMOD |= 0x01;?? ?ET0 = TR0 = 1;}void StopWatchReset(void){?? ?StopWatchRunning = 0;?? ?DecimalPart = 0;?? ?IntegerPart = 0;?? ?StopWatchRefresh = 1;}void StopWatchAction(void){?? ?StopWatchRunning = !StopWatchRunning;}void StopWatchCount(void){?? ?if (StopWatchRunning)?? ?{?? ??? ?DecimalPart++;?? ??? ?if (DecimalPart >= 100)?? ??? ?{?? ??? ??? ?DecimalPart = 0;?? ??? ??? ?IntegerPart++;?? ??? ??? ?if (IntegerPart >= 10000)?? ??? ??? ?{?? ??? ??? ??? ?IntegerPart = 0;?? ??? ??? ?}?? ??? ?}?? ??? ?StopWatchRefresh = 1;?? ?}}void StopWatchDisplay(void){?? ?u8 i, j;?? ?u8 buf[4];?? ?LedBuff[0] = LedChar[DecimalPart % 10];?? ?LedBuff[1] = LedChar[DecimalPart / 10];?? ?buf[0] = IntegerPart % 10;?? ?buf[1] = IntegerPart / 10 % 10;?? ?buf[2] = IntegerPart / 100 % 10;?? ?buf[3] = IntegerPart / 1000 % 10;?? ?for (i = 3; i >= 1; i--)?? ?{?? ??? ?if (buf[i] == 0)?? ??? ?{?? ??? ??? ?LedBuff[i + 2] = 0xFF;?? ??? ?}?? ??? ?else?? ??? ?{?? ??? ??? ?break;?? ??? ?}?? ?}?? ?for (j = 0; j <= i; j++)?? ?{?? ??? ?LedBuff[j + 2] = LedChar[buf[j]];?? ?}?? ?LedBuff[2] &= 0x7F; // 加小數(shù)點}void KeyDriver(void){?? ?u8 i;?? ?static u8 backup[4] = {1, 1, 1, 1};?? ?for (i = 0; i < 4; i++)?? ?{?? ??? ?if (backup[i] != KeySta[i])?? ??? ?{?? ??? ??? ?if (backup[i] != 0) // 按下處理?? ??? ??? ?{?? ??? ??? ??? ?if (i == 1) // Esc鍵,復位秒表?? ??? ??? ??? ?{?? ??? ??? ??? ??? ?StopWatchReset();?? ??? ??? ??? ?}?? ??? ??? ??? ?else if (i == 2) // 回車鍵,啟停秒表?? ??? ??? ??? ?{?? ??? ??? ??? ??? ?StopWatchAction();?? ??? ??? ??? ?}?? ??? ??? ?}?? ??? ??? ?backup[i] = KeySta[i];?? ??? ?}?? ?}}void main(void){?? ?EA = 1;?? ?ENLED = 0;?? ?ADDR3 = 1;?? ?P2 = 0xFE; // 1111-1110?? ?ConfigTimer0(2); // 2ms?? ?while (1)?? ?{?? ??? ?if (StopWatchRefresh)?? ??? ?{?? ??? ??? ?StopWatchRefresh = 0;?? ??? ??? ?StopWatchDisplay();?? ??? ?}?? ??? ?KeyDriver();?? ?}}void LedScan(void){?? ?static u8 i = 0;?? ?P0 = 0xFF;?? ?P1 = (P1 & 0xF8) | i;?? ?P0 = LedBuff[i];?? ?if (i < 5)?? ??? ?i++;?? ?else?? ??? ?i = 0;}void KeyScan(void){?? ?static u8 keybuff[4] = {0xFF, 0xFF, 0xFF, 0xFF};?? ?u8 i;?? ?keybuff[0] = (keybuff[0] << 1) | KEY1;?? ?keybuff[1] = (keybuff[1] << 1) | KEY2;?? ?keybuff[2] = (keybuff[2] << 1) | KEY3;?? ?keybuff[3] = (keybuff[3] << 1) | KEY4;?? ?for (i = 0; i < 3; i++)?? ?{?? ??? ?if (keybuff[i] == 0xFF)?? ??? ??? ?KeySta[i] = 1;?? ??? ?else if (keybuff[i] == 0)?? ??? ??? ?KeySta[i] = 0;?? ?}}void Timer0_ISR(void) interrupt 1{?? ?static u8 tmr10ms = 0;?? ?TH0 = TH0RL;?? ?TL0 = TL0RL;?? ?LedScan();?? ?KeyScan();?? ?tmr10ms++;?? ?if (tmr10ms >= 5)?? ?{?? ??? ?tmr10ms = 0;?? ??? ?StopWatchCount();?? ?}}//跟堂作業(yè),PWM#include <>typedef unsigned char u8;typedef unsigned int? u16;typedef unsigned long u32;typedef signed char i8;typedef signed int? i16;typedef signed long i32;sbit PWMOUT=P0^0;sbit ADDR0=P1^0;sbit ADDR1=P1^1;sbit ADDR2=P1^2;sbit ADDR3=P1^3;sbit ENLED=P1^4;u8 lowRH,lowRL;u8 highRH,highRL;void ConfigPWM( u16 freq, u8 dc ) {?? ?u32 tmp;?? ?u16 high,low;?? ?tmp=11059200/12/freq;//計數(shù)值?? ?high=tmp*dc/100;//高電平計數(shù)值?? ?low=tmp-high;//低電平計數(shù)值?? ??? ?high=65536-high+12;//補償,初值?? ?low=65536-low+12;//補償,初值?? ?highRH=(u8)(high>>8);?? ?highRL=(u8)(high);?? ?lowRH=(u8)(low>>8);?? ?lowRL=(u8)low;?? ?TMOD&=0xF0;?? ?TMOD|=0x01;?? ?TH0=highRH;?? ?TL0=highRL;?? ?ET0=TR0=1;?? ?PWMOUT=1;}void ClosePWM(void) {?? ?ET0=TR0=0;?? ?PWMOUT=1;}void main(void){?? ?u16 i;?? ?EA=1;?? ?ENLED=0;?? ?ADDR3=1;?? ?ADDR2=1;?? ?ADDR1=1;?? ?ADDR0=0;?? ?while(1)?? ?{?? ??? ?ConfigPWM(100,10);?? ??? ?for(i=0;i<40000;i++);?? ??? ?ConfigPWM(100,40);?? ??? ?for(i=0;i<40000;i++);?? ??? ?ConfigPWM(100,90);?? ??? ?for(i=0;i<40000;i++);?? ??? ?ClosePWM();?? ??? ?for(i=0;i<40000;i++);?? ?}}void Timer0_ISR(void) interrupt 1{?? ?if(PWMOUT==1)?? ?{?? ??? ?TH0=lowRH;?? ??? ?TL0=lowRL;?? ??? ?PWMOUT=0;?? ?}?? ?else?? ?{?? ??? ?TH0=highRH;?? ??? ?TL0=highRL;?? ??? ?PWMOUT=1;?? ?}}//跟堂作業(yè),呼吸燈#include <>typedef unsigned char u8;typedef unsigned int? u16;typedef unsigned long u32;typedef signed char i8;typedef signed int? i16;typedef signed long i32;u8 lowRH,lowRL;u8 highRH,highRL;u8 TH1RL,TL1RL;u32 PeriodCnt;sbit PWMOUT=P0^0;sbit ADDR0=P1^0;sbit ADDR1=P1^1;sbit ADDR2=P1^2;sbit ADDR3=P1^3;sbit ENLED=P1^4;void ConfigPWM( u16 freq, u8 dc ) {?? ?u16 high,low;?? ?PeriodCnt=11059200/12/freq;//計數(shù)值?? ?high=PeriodCnt*dc/100;//高電平計數(shù)值?? ?low=PeriodCnt-high;//低電平計數(shù)值?? ?high=65536-high+12;//補償,初值?? ?low=65536-low+12;//補償,初值?? ?highRH=(u8)(high>>8);?? ?highRL=(u8)(high);?? ?lowRH=(u8)(low>>8);?? ?lowRL=(u8)low;?? ?TMOD&=0xF0;?? ?TMOD|=0x01;?? ?TH0=highRH;?? ?TL0=highRL;?? ?ET0=TR0=1;?? ?PWMOUT=1;}void ConfigTimer1( u16 ms ){?? ?u32 tmp;?? ??? ?tmp=11059200/12*ms/1000;?? ?tmp=65536-tmp;?? ?tmp+=12;//補償?? ?TH1RL=(u8)(tmp>>8);?? ?TL1RL=(u8)tmp;?? ?TMOD&=0x0F;?? ?TMOD|=0x10;?? ?TH1=TH1RL;?? ?TL1=TL1RL;?? ?ET1=TR1=1;}void ClosePWM(void) {?? ?ET0=TR0=0;?? ?PWMOUT=1;}void main(void){?? ?EA=1;?? ?ENLED=0;?? ?ADDR3=1;?? ?ADDR2=1;?? ?ADDR1=1;?? ?ADDR0=0;?? ?ConfigPWM(100,10);//100Hz,占空比10?? ?ConfigTimer1(50);//50ms?? ?while(1);}void Timer0_ISR(void) interrupt 1{?? ?if(PWMOUT==1)?? ?{?? ??? ?TH0=lowRH;?? ??? ?TL0=lowRL;?? ??? ?PWMOUT=0;?? ?}?? ?else?? ?{?? ??? ?TH0=highRH;?? ??? ?TL0=highRL;?? ??? ?PWMOUT=1;?? ?}}void AdjuctDutyCycle( u8 dc ) {?? ?u16 high,low;?? ??? ?high=PeriodCnt*dc/100;//高電平計數(shù)值?? ?low=PeriodCnt-high;//低電平計數(shù)值?? ?high=65536-high+12;//補償,初值?? ?low=65536-low+12;//補償,初值?? ?highRH=(u8)(high>>8);?? ?highRL=(u8)(high);?? ?lowRH=(u8)(low>>8);?? ?lowRL=(u8)low;}void Timer1_ISR(void) interrupt 3{?? ?u8 code table[13]={5,18,30,41,51,60,68,75,81,86,90,93,95};?? ?static bit dir=0;?? ?static u8 index=0;?? ?TH1=TH1RL;?? ?TL1=TL1RL;?? ?AdjuctDutyCycle(table[index]);?? ?if(dir==0)?? ?{?? ??? ?index++;?? ??? ?if(index>=12)dir=1;?? ?}?? ?else?? ?{?? ??? ?index--;?? ??? ?if(index==0)dir=0;?? ?}}//跟堂作業(yè),交通燈--改進版#include ""typedef signed char i8;typedef unsigned char u8;typedef signed int i16;typedef unsigned int u16;typedef signed long i32;typedef unsigned long u32;sbit ADDR3 = P1 ^ 3;sbit ENLED = P1 ^ 4;u8 code LedChar[] = { // 數(shù)碼管顯示字符轉(zhuǎn)換表??? 0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,??? 0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E};u8 LedBuff[8] = { // 數(shù)碼管+獨立LED顯示緩沖區(qū)??? 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};bit flag1s = 1;u8 TH0RL = 0;u8 TL0RL = 0;void ConfigTimer0(u16 ms);void TrafficLight();void main(void){?? ?EA = 1;?? ??? // 開總中斷?? ?ENLED = 0; // 使能數(shù)碼管和LED?? ?ADDR3 = 1;?? ?ConfigTimer0(1); // 配置T0定時1ms?? ?while (1)?? ?{?? ??? ?if (flag1s) // 每秒執(zhí)行一次交通燈刷新?? ??? ?{?? ??? ??? ?flag1s = 0;?? ??? ??? ?TrafficLight();?? ??? ?}?? ?}}void ConfigTimer0(u16 ms){?? ?unsigned long tmp; // 臨時變量?? ?tmp = 11059200 / 12;?? ?????? // 定時器計數(shù)頻率?? ?tmp = (tmp * ms) / 1000;????? // 計算所需的計數(shù)值?? ?tmp = 65536 - tmp;?? ?????? // 計算定時器重載值?? ?tmp = tmp + 18;?? ??? ?????? // 補償中斷響應延時造成的誤差?? ?TH0 = TH0RL = (u8)(tmp >> 8); // 定時器重載值拆分為高低字節(jié)?? ?TL0 = TL0RL = (u8)tmp;?? ?TMOD &= 0xF0;? // 清零T0的控制位?? ?TMOD |= 0x01;? // 配置T0為模式1?? ?ET0 = TR0 = 1; // 使能T0中斷 // 啟動T0}void TrafficLight(){#define red 1#define green 2#define yello 3?? ?static u8 color = yello;#define red_smgPos 0#define green_smgPos 4#define yello_smgPos 2?? ?static u8 smgPos = yello_smgPos;?? ?static i8 timer = 2;?? ?static u8 lastLight = red;?? ?u8 i;?? ?for (i = 0; i < 6; i++)?? ?{?? ??? ?LedBuff[i] = 0xFF;?? ?}?? ?timer--;?? ?LedBuff[smgPos] = LedChar[timer % 10];?? ?LedBuff[smgPos + 1] = LedChar[timer / 10];?? ?switch (color)?? ?{?? ?case green:?? ??? ?LedBuff[6] = 0x3F; // 0011-1111?? ??? ?if (timer == 0)?? ??? ?{?? ??? ??? ?lastLight = green;?? ??? ??? ?smgPos = yello_smgPos;?? ??? ??? ?color = yello;?? ??? ??? ?timer = 2;?? ??? ?}?? ??? ?break;?? ?case yello:?? ??? ?LedBuff[6] = 0xE7; // 1110-0111?? ??? ?if (timer == 0)?? ??? ?{?? ??? ??? ?if (lastLight == green)?? ??? ??? ?{?? ??? ??? ??? ?color = red;?? ??? ??? ??? ?smgPos = red_smgPos;?? ??? ??? ??? ?timer = 10;?? ??? ??? ?}?? ??? ??? ?else if (lastLight == red)?? ??? ??? ?{?? ??? ??? ??? ?color = green;?? ??? ??? ??? ?smgPos = green_smgPos;?? ??? ??? ??? ?timer = 20;?? ??? ??? ?}?? ??? ?}?? ??? ?break;?? ?case red:?? ??? ?LedBuff[6] = 0xFC; // 1111-1100?? ??? ?if (timer == 0)?? ??? ?{?? ??? ??? ?lastLight = red;?? ??? ??? ?smgPos = yello_smgPos;?? ??? ??? ?color = yello;?? ??? ??? ?timer = 2;?? ??? ?}?? ??? ?break;?? ?}}void LedScan(){?? ?static u8 i = 0; // 動態(tài)掃描索引?? ?P0 = 0xFF;?? ?????? // 關閉所有段選位，顯示消隱?? ?P1 = (P1 & 0xF8) | i; // 位選索引值賦值到P1口低3位?? ?P0 = LedBuff[i];????? // 緩沖區(qū)中索引位置的數(shù)據(jù)送到P0口?? ?i++;?? ?i &= 0x07; // 0000-0111}void InterruptTimer0() interrupt 1{?? ?static u16 tmr1s = 0; // 1秒定時器?? ?TH0 = TH0RL; // 重新加載重載值?? ?TL0 = TL0RL;?? ?LedScan(); // LED掃描顯示?? ?tmr1s++;?? // 1秒定時的處理?? ?if (tmr1s >= 1000)?? ?{?? ??? ?tmr1s = 0;?? ??? ?flag1s = 1; // 設置秒定時標志?? ?}}//跟堂作業(yè) c4炸彈#include <>typedef signed char i8;typedef unsigned char u8;typedef signed int i16;typedef unsigned int u16;typedef signed long i32;typedef unsigned long u32;sbit BUZZ = P1 ^ 6;sbit ADDR3 = P1 ^ 3;sbit ENLED = P1 ^ 4;sbit KEYIN1 = P2 ^ 4;sbit KEYIN2 = P2 ^ 5;sbit KEYIN3 = P2 ^ 6;sbit KEYIN4 = P2 ^ 7;sbit KEYOUT1 = P2 ^ 3;sbit KEYOUT2 = P2 ^ 2;sbit KEYOUT3 = P2 ^ 1;sbit KEYOUT4 = P2 ^ 0;u8 code LedChar[16] =??? {?? ?0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,?? ?0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E};u8 LedBuff[8] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};u8 code KeyCodeMap[4][4] =??? {?? ?{0x31, 0x32, 0x33, 0x26}, // 數(shù)字1,2,3,UP?? ?{0x34, 0x35, 0x36, 0x25}, // 數(shù)字4,5,6,LEFT?? ?{0x37, 0x38, 0x39, 0x28}, // 數(shù)字7,8,9,DOWN?? ?{0x30, 0x1B, 0x0D, 0x27}, // 數(shù)字0,ESC,ENTER,RIGHT};u8 KeySta[4][4] = {{1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}};u32 pdata KeyDownTime[4][4] = {{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}};bit enBuzz = 0;bit flag1s = 0;bit flagStart = 0;u8 TH0RL = 0;u8 TL0RL = 0;u16 CountDown = 0;void ConfigTimer0(u16 ms){?? ?u32 tmp;?? ?tmp = 11059200 / 12;?? ?tmp = tmp * ms / 1000;?? ?tmp = 65536 - tmp;?? ?tmp += 18; // 補償值?? ?TH0 = TH0RL = (u8)(tmp >> 8);?? ?TL0 = TL0RL = (u8)tmp;?? ?TMOD &= 0xF0;?? ?TMOD |= 0x01;?? ?ET0 = TR0 = 1;}void ShowNumber(u32 num){?? ?i8 i;?? ?u8 buf[6];?? ?for (i = 0; i < 6; i++)?? ?{?? ??? ?buf[i] = num % 10;?? ??? ?num /= 10;?? ?}?? ?for (i = 5; i >= 1; i--)?? ?{?? ??? ?if (buf[i] == 0)?? ??? ??? ?LedBuff[i] = 0xFF;?? ??? ?else?? ??? ??? ?break;?? ?}?? ?for (; i >= 0; i--)?? ?{?? ??? ?LedBuff[i] = LedChar[buf[i]];?? ?}}void KeyAction(u8 keycode){?? ?if (keycode == 0x26) // up?? ?{?? ??? ?if (CountDown < 9999)?? ??? ?{?? ??? ??? ?CountDown++;?? ??? ??? ?ShowNumber(CountDown);?? ??? ?}?? ?}?? ?else if (keycode == 0x28) // down?? ?{?? ??? ?if (CountDown > 1)?? ??? ?{?? ??? ??? ?CountDown--;?? ??? ??? ?ShowNumber(CountDown);?? ??? ?}?? ?}?? ?else if (keycode == 0x0D) // enter?? ?{?? ??? ?flagStart = 1;?? ?}?? ?else if (keycode == 0x1B) // esc?? ?{?? ??? ?enBuzz = 0;?? ??? ?LedBuff[6] = 0xFF;?? ??? ?flagStart = 0;?? ??? ?CountDown = 0;?? ??? ?ShowNumber(CountDown);?? ?}}void KeyDriver(void){?? ?u8 i, j;?? ?static u8 backup[4][4] = {{1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}, {1, 1, 1, 1}};?? ?static u32 pdata TimeThr[4][4] = {?? ???? {1000, 1000, 1000, 1000},?? ???? {1000, 1000, 1000, 1000},?? ???? {1000, 1000, 1000, 1000},?? ???? {1000, 1000, 1000, 1000}};?? ?for (i = 0; i < 4; i++)?? ?{?? ??? ?for (j = 0; j < 4; j++)?? ??? ?{?? ??? ??? ?if (backup[i][j] != KeySta[i][j])?? ??? ??? ?{?? ??? ??? ??? ?if (backup[i][j] == 0)?? ??? ??? ??? ?{?? ??? ??? ??? ??? ?KeyAction(KeyCodeMap[i][j]);?? ??? ??? ??? ?}?? ??? ??? ??? ?backup[i][j] = KeySta[i][j];?? ??? ??? ?}?? ??? ??? ?if (KeyDownTime[i][j] > 0)?? ??? ??? ?{?? ??? ??? ??? ?if (KeyDownTime[i][j] >= TimeThr[i][j])?? ??? ??? ??? ?{?? ??? ??? ??? ??? ?KeyAction(KeyCodeMap[i][j]);?? ??? ??? ??? ??? ?TimeThr[i][j] += 200;?? ??? ??? ??? ?}?? ??? ??? ?}?? ??? ??? ?else?? ??? ??? ?{?? ??? ??? ??? ?TimeThr[i][j] = 1000;?? ??? ??? ?}?? ??? ?}?? ?}}void main(void){?? ?EA = 1;?? ?ENLED = 0;?? ?ADDR3 = 1;?? ?ConfigTimer0(1); // 1ms?? ?ShowNumber(0);?? ?while (1)?? ?{?? ??? ?KeyDriver();?? ??? ?if (flagStart && flag1s)?? ??? ?{?? ??? ??? ?flag1s = 0;?? ??? ??? ?if (CountDown > 0)?? ??? ??? ?{?? ??? ??? ??? ?CountDown--;?? ??? ??? ??? ?ShowNumber(CountDown);?? ??? ??? ??? ?if (CountDown == 0)?? ??? ??? ??? ?{?? ??? ??? ??? ??? ?enBuzz = 1;?? ??? ??? ??? ??? ?LedBuff[6] = 0;?? ??? ??? ??? ?}?? ??? ??? ?}?? ??? ?}?? ?}}void LedScan(void){?? ?static u8 i = 0;?? ?P0 = 0xFF;?? ?P1 = (P1 & 0xF8) | i;?? ?P0 = LedBuff[i];?? ?i++;?? ?i &= 0x07; // 0000-0111}void KeyScan(void){?? ?u8 i;?? ?static u8 keyout = 0;?? ?static u8 keybuf[4][4] = {{0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF}};?? ?keybuf[keyout][0] = (keybuf[keyout][0] << 1) | KEYIN1;?? ?keybuf[keyout][1] = (keybuf[keyout][1] << 1) | KEYIN2;?? ?keybuf[keyout][2] = (keybuf[keyout][2] << 1) | KEYIN3;?? ?keybuf[keyout][3] = (keybuf[keyout][3] << 1) | KEYIN4;?? ?for (i = 0; i < 4; i++)?? ?{?? ??? ?if ((keybuf[keyout][i] & 0x0F) == 0)?? ??? ?{?? ??? ??? ?KeySta[keyout][i] = 0;?? ??? ??? ?KeyDownTime[keyout][i] += 4;?? ??? ?}?? ??? ?else if ((keybuf[keyout][i] & 0x0F) == 0x0F)?? ??? ?{?? ??? ??? ?KeySta[keyout][i] = 1;?? ??? ??? ?KeyDownTime[keyout][i] = 0;?? ??? ?}?? ?}?? ?keyout++;?? ?keyout &= 0x03; // 0000-0011?? ?switch (keyout)?? ?{?? ?case 0:?? ?KEYOUT4 = 1; KEYOUT1 = 0; break;?? ?case 1: KEYOUT1 = 1; KEYOUT2 = 0; break;?? ?case 2: KEYOUT2 = 1; KEYOUT3 = 0; break;?? ?case 3: KEYOUT3 = 1; KEYOUT4 = 0; break;?? ?}}void Timer0_ISR(void) interrupt 1{?? ?static u16 tmr1s = 0;?? ?TH0 = TH0RL;?? ?TL0 = TL0RL;?? ?if (enBuzz)?? ??? ?BUZZ = !BUZZ;?? ?else?? ??? ?BUZZ = 1;?? ?LedScan();?? ?KeyScan();?? ?if (flagStart)?? ?{?? ??? ?tmr1s++;?? ??? ?if (tmr1s >= 1000)?? ??? ?{?? ??? ??? ?tmr1s = 0;?? ??? ??? ?flag1s = 1;?? ??? ?}?? ?}?? ?else?? ?{?? ??? ?tmr1s = 0;?? ?}}