#include "STC90.h" #include < intrins.h > #define uchar unsigned char #define uint unsigned int #define led_port P1 sbit IR_RE = P3^2; sbit led_r = P1^3; sbit led_g = P1^4; sbit led_b = P1^5; sbit led_wd = P1^7; sbit K1 =P3^0 ; //增加鍵 sbit K2 =P3^1 ; //減少鍵 sbit BEEP =P3^7 ; //蜂鳴器 uchar temp,temp1; bit k=0; //紅外解碼判斷標志位，為0則為有效信號，為1則為無效 bit Flag2; uchar date[4]={0,0,0,0}; //date數組為存放地址原碼，反碼，數據原碼，反碼 uint lade_1,lade_2,lade_3,lade_4; uint num; uchar date_ram,ee_temp,ee_temp1; uchar WDT_NUM=0; uchar const dofly[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};// 顯示段碼值01234567 uchar code seg[]={7,6,5,4,3,2,1,0};//分別對應相應的數碼管點亮,即位碼 unsigned long disp_date; void fade(); void fade1(); /*************************** 看門狗子程序*************************/ void watchdog_timer() { if(WDT_NUM==5) { WDT_NUM=0; led_wd=!led_wd; } WDT_NUM++; WDT_CONTR=0x3f; } /******************************************************************/ void delay(unsigned int cnt) { while(--cnt); } /*--------------------------延時1ms程子程序-----------------------*/ void delay_1ms(uint z) { uint x,y; for(x=z;x>0;x--) for(y=126;y>0;y--); } /*--------------------------延時1ms程子程序-----------------------*/ delay1000() { uchar i,j; i=5; do{j=95; do{j--;} while(j); i--; } while(i); } /*---------------------------延時882us子程序-----------------------*/ delay882() { uchar i,j; i=6; do{j=71; do{j--;} while(j); i--; }while(i); } /*--------------------------延時2400us程子程序-----------------------*/ delay2400() { uchar i,j; i=5; do{j=237; do{j--;} while(j); i--; }while(i); } /**********************************************************************/ /* void display() { uchar i; for(i=0;i<8;i++) { P0=dofly[disp_date%10];//取顯示數據，段碼 P2=seg[i]; //取位碼 delay_1ms(1); disp_date/=10; } } */ /*********************************************************************/ uchar EEPROM_read(uint addr)//EEPROM字節讀 { ISP_CONTR=0x83; //系統時鐘<12M時，對ISP_CONTR寄存器設置的值，本電路為11.0592M ISP_CMD=1; //字節讀 ISP_ADDRH=(addr&0xff00)>>8; ISP_ADDRL=addr&0x00ff; ISP_TRIG=0x46; ISP_TRIG=0xb9; _nop_(); _nop_(); return ISP_DATA; } //-------------------------------------------------------------------- void EEPROM_write(uint addr,uchar dat)//EEPROM字節寫 { ISP_CONTR=0x83; //系統時鐘<12M時，對ISP_CONTR寄存器設置的值，本電路為11.0592M ISP_CMD=2; //字節編程 ISP_ADDRH=(addr&0xff00)>>8; ISP_ADDRL=addr&0x00ff; ISP_DATA=dat; ISP_TRIG=0x46; ISP_TRIG=0xb9; _nop_(); _nop_(); } //-------------------------------------------------------------------- void EEPROM_ERASE(uint addr)//EEPROM扇區擦除 { ISP_CONTR=0x83; //系統時鐘<12M時，對ISP_CONTR寄存器設置的值，本電路為11.0592M ISP_CMD=3; //扇區擦除 ISP_ADDRH=(addr&0xff00)>>8; ISP_ADDRL=addr&0x00ff; ISP_TRIG=0x46; ISP_TRIG=0xb9; _nop_(); _nop_(); } //************************************************************** /*----------------------------------------------------------*/ /*-----------------------紅外解碼程序(核心)-----------------*/ /*----------------------------------------------------------*/ void IR_decode() { uchar i,j; while(IR_RE==0); delay2400(); if(IR_RE==1) //延時2.4ms后如果是高電平則是新碼 { delay1000(); delay1000(); for(i=0;i<4;i++) { for(j=0;j<8;j++) { while(IR_RE==0); //等待地址碼第1位高電平到來 delay882(); //延時882us判斷此時引腳電平 ///CY=IR_RE; if(IR_RE==0) { date[i]>>=1; date[i]=date[i]|0x00; } else if(IR_RE==1) { delay1000(); date[i]>>=1; date[i]=date[i]|0x80; } } //1位數據接收結束 } //32位二進制碼接收結束 } } /* void LED_PWM() { lade_2=num; //384 lade_4=num; //384 while(lade_2!=0&Flag2==1) { for(lade_3=512;lade_3>lade_4;lade_3--) //512 { led_port=0x00; delay(1); } lade_3=512; //512 lade_4--; for(lade_1=0;lade_1<lade_2;lade_1++) { led_port=0x38; //c7 delay(1); } lade_1=0; lade_2--; if(temp!=0x0c&Flag2==1) { lade_2=0; } lade_2=num; //384 lade_4=num; //384 } } */ void calc() { EEPROM_read(0x2000); ee_temp1=ISP_DATA; ee_temp=ee_temp1&0x0f; //************************************* 1 /* if(date[3]==0xff&Flag2==1) { if(num>=20) { num=num-80; } //else num=1; LED_PWM(); } if(date[3]==0xfe&Flag2==1) { if(num<=500) { num=num+80; } // else num=511; LED_PWM(); } if(ee_temp1==0xfd) { led_port=0x00; watchdog_timer(); } if(ee_temp1==0xfc) { led_port=0x00; led_r=1; led_g=1; led_b=1; watchdog_timer(); } */ //********************************************** 2 if(ee_temp1==0xfb) { led_port=0x00; led_r=1; watchdog_timer(); } if(ee_temp1==0xfa) { led_port=0x00; led_g=1; watchdog_timer(); } if(ee_temp1==0xf9) { led_port=0x00; led_b=1; watchdog_timer(); } if(ee_temp1==0xf8) { led_port=0x00; led_r=1; led_g=1; led_b=1; watchdog_timer(); } //************************************** 3 if(ee_temp1==0xf7) { uint fade_1,fade_2,fade_3,fade_4; fade_2=448; //384 fade_4=448; //384 while(fade_2!=0&ee_temp==0x07) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x10; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x08; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x07) { fade_2=0; } watchdog_timer(); fade_2=448; //384 fade_4=448; //384 } } if(ee_temp1==0xf6) { uint fade_1,fade_2,fade_3,fade_4; fade_2=448; //384 fade_4=448; //384 while(fade_2!=0&ee_temp==0x06) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x20; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x10; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x06) { fade_2=0; } watchdog_timer(); fade_2=448; //384 fade_4=448; //384 } } if(ee_temp1==0xf5) { uint fade_1,fade_2,fade_3,fade_4; fade_2=448; //384 fade_4=448; //384 while(fade_2!=0&ee_temp==0x05) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x08; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x20; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x05) { fade_2=0; } watchdog_timer(); fade_2=448; //384 fade_4=448; //384 } } if(ee_temp1==0xf4) { while(ee_temp==4) { led_port=0x00; led_r=1; delay_1ms(200); led_port=0x00; led_r=1; led_g=1; delay_1ms(200); led_port=0x00; led_g=1; delay_1ms(200); watchdog_timer(); led_port=0x00; led_g=1; led_b=1; delay_1ms(200); led_port=0x00; led_b=1; delay_1ms(200); led_port=0x00; led_b=1; led_r=1; delay_1ms(200); watchdog_timer(); } } //************************************** 4 if(ee_temp1==0xf3) { uint fade_1,fade_2,fade_3,fade_4; fade_2=416; //384 fade_4=416; //384 while(fade_2!=0&ee_temp==0x03) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x10; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x08; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x03) { fade_2=0; } watchdog_timer(); fade_2=416; //384 fade_4=416; //384 } } if(ee_temp1==0xf2) { uint fade_1,fade_2,fade_3,fade_4; fade_2=384; //384 fade_4=384; //384 while(fade_2!=0&ee_temp==0x02) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x20; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x10; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x02) { fade_2=0; } watchdog_timer(); fade_2=384; //384 fade_4=384; //384 } } if(ee_temp1==0xf1) { uint fade_1,fade_2,fade_3,fade_4; fade_2=348; //384 fade_4=348; //384 while(fade_2!=0&ee_temp==0x01) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x08; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x20; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x01) { fade_2=0; } watchdog_timer(); fade_2=348; //384 fade_4=348; //384 } } if(ee_temp1==0xf0) { while(ee_temp==0) { led_port=0x00; led_r=1; delay_1ms(500); watchdog_timer(); led_port=0x00; led_g=1; delay_1ms(500); led_port=0x00; led_b=1; delay_1ms(500); watchdog_timer(); } } //******************************************** 5 if(ee_temp1==0xef) { uint fade_1,fade_2,fade_3,fade_4; fade_2=384; //384 fade_4=384; //384 while(fade_2!=0&ee_temp==0x0f) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x10; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x08; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x0f) { fade_2=0; } watchdog_timer(); fade_2=384; //384 fade_4=384; //384 } } if(ee_temp1==0xee) { uint fade_1,fade_2,fade_3,fade_4; fade_2=320; //384 fade_4=320; //384 while(fade_2!=0&ee_temp==0x0e) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x20; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x10; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x0e) { fade_2=0; } watchdog_timer(); fade_2=320; //384 fade_4=320; //384 } } if(ee_temp1==0xed) { uint fade_1,fade_2,fade_3,fade_4; fade_2=320; //384 fade_4=320; //384 while(fade_2!=0&ee_temp==0x0d) { for(fade_3=512;fade_3>fade_4;fade_3--) //512 { led_port=0x08; delay(1); } fade_3=512; //512 fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x20; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x0d) { fade_2=0; } watchdog_timer(); fade_2=320; //384 fade_4=320; //384 } } if(ee_temp1==0xec) fade(); //******************************************* 6 if(ee_temp1==0xeb) { led_port=0x00; led_r=1; led_g=1; watchdog_timer(); } if(ee_temp1==0xea) { led_port=0x00; //led_r=0; led_g=1; led_b=1; watchdog_timer(); } if(ee_temp1==0xe9) { led_port=0x00; led_r=1; //led_g=0; led_b=1; watchdog_timer(); } if(ee_temp1==0xe8) fade1(); } void fade() { // uchar i; uint fade_1,fade_2,fade_3,fade_4; fade_2=512; fade_4=511; while(fade_2!=0&ee_temp==0x0c) { for(fade_3=512;fade_3>fade_4;fade_3--) { led_port=0x10; delay(1); } fade_3=512; fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x08; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x0c) { fade_2=0; } } watchdog_timer(); fade_2=512; fade_4=511; while(fade_2!=0&ee_temp==0x0c) { if(ee_temp!=0x0c) { fade_2=0; } for(fade_3=512;fade_3>fade_4;fade_3--) { led_port=0x20; delay(1); // watchdog_timer(); } fade_3=512; fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x10; delay(1); // watchdog_timer(); } fade_1=0; fade_2--; } watchdog_timer(); fade_2=512; fade_4=511; while(fade_2!=0&ee_temp==0x0c) { if(ee_temp!=0x0c) { fade_2=0; } for(fade_3=512;fade_3>fade_4;fade_3--) { led_port=0x08; delay(1); watchdog_timer(); } fade_3=512; fade_4--; watchdog_timer(); for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x20; delay(1); watchdog_timer(); } fade_1=0; fade_2--; } watchdog_timer(); } void fade1() { // uchar i; uint fade_1,fade_2,fade_3,fade_4; fade_2=128; fade_4=127; while(fade_2!=0&ee_temp==0x08) { for(fade_3=128;fade_3>fade_4;fade_3--) { led_port=0x10; delay(1); } fade_3=128; fade_4--; for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x08; delay(1); } fade_1=0; fade_2--; if(ee_temp!=0x08) { fade_2=0; } } watchdog_timer(); fade_2=128; fade_4=127; while(fade_2!=0&ee_temp==0x08) { if(ee_temp!=0x08) { fade_2=0; } for(fade_3=128;fade_3>fade_4;fade_3--) { led_port=0x20; delay(1); } fade_3=128; fade_4--; for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x10; delay(1); } fade_1=0; fade_2--; } watchdog_timer(); fade_2=128; fade_4=127; while(fade_2!=0&ee_temp==0x08) { if(ee_temp!=0x08) { fade_2=0; } for(fade_3=128;fade_3>fade_4;fade_3--) { led_port=0x08; delay(1); } fade_3=128; fade_4--; for(fade_1=0;fade_1<fade_2;fade_1++) { led_port=0x20; delay(1); } fade_1=0; fade_2--; } watchdog_timer(); } void init() { led_port=0x00; /* led_r=1; delay_1ms(500); led_port=0x00; led_g=1; delay_1ms(500); led_port=0x00; led_b=1; delay_1ms(500); led_port=0x00; */ delay_1ms(2); WDT_CONTR=0x3f; delay_1ms(500); } //******************************** void main() { init(); Flag2=0; SP=0x60; //堆棧指針 EX0=1; //允許外部中斷0,用于檢測紅外遙控器按鍵 EA=1; num=255; while(1) { calc(); } } //******************************************************************** /*------------------------外部中斷0程序-------------------------*/ /*------------------主要用于處理紅外遙控鍵值--------------------*/ void int0() interrupt 0 { uchar i; Flag2=0; /////// k=0; EX0=0; //檢測到有效信號關中斷，防止干擾 for(i=0;i<4;i++) { delay1000(); if(IR_RE==1){k=1;} //剛開始為9ms的引導碼. } led_port=0x00; if(k==0) { IR_decode(); //如果接收到的是有效信號，則調用解碼程序 if(date[3]>=0xe8) { if(date[3]<=0xfb) { temp1=date[3]; EEPROM_ERASE(0x2000); //STC_EEROM_0X2000 temp1 EEPROM_write(0x2000,temp1); EEPROM_read(0x2000); ee_temp1=ISP_DATA; ee_temp=ee_temp1&0x0f; /* temp=date[3]&0x0f; EEPROM_ERASE(0x2004); //STC_EEROM_0X2004 temp EEPROM_write(0x2004,temp); */ } else { EEPROM_read(0x2000); ee_temp1=ISP_DATA; ee_temp=ee_temp1&0x0f; } } delay2400(); delay2400(); delay2400(); delay_1ms(500); } EX0=1; //開外部中斷，允許新的遙控按鍵 }
上傳時間： 2016-07-02
上傳用戶：184890962
// 學生管理.cpp : Defines the entry point for the application. // #include "stdafx.h" #include "resource.h" #define MAX_LOADSTRING 100 // Global Variables: HINSTANCE hInst; // current instance TCHAR szTitle[MAX_LOADSTRING]; // The title bar text TCHAR szWindowClass[MAX_LOADSTRING]; // The title bar text // Foward declarations of functions included in this code module: ATOM MyRegisterClass(HINSTANCE hInstance); BOOL InitInstance(HINSTANCE, int); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); LRESULT CALLBACK About(HWND, UINT, WPARAM, LPARAM); struct person { char name[10]; int ID; int cj_yw; int cj_sx; struct person* next; struct person* pro; }per; int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { // TODO: Place code here. MSG msg; HACCEL hAccelTable; // Initialize global strings LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_MY, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // Perform application initialization: if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_MY); // Main message loop: while (GetMessage(&msg, NULL, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } return msg.wParam; } // // FUNCTION: MyRegisterClass() // // PURPOSE: Registers the window class. // // COMMENTS: // // This function and its usage is only necessary if you want this code // to be compatible with Win32 systems prior to the 'RegisterClassEx' // function that was added to Windows 95. It is important to call this function // so that the application will get 'well formed' small icons associated // with it. // ATOM MyRegisterClass(HINSTANCE hInstance) { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_MY); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = (LPCSTR)IDC_MY; wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL); return RegisterClassEx(&wcex); } // // FUNCTION: InitInstance(HANDLE, int) // // PURPOSE: Saves instance handle and creates main window // // COMMENTS: // // In this function, we save the instance handle in a global variable and // create and display the main program window. // BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) { HWND hWnd; hInst = hInstance; // Store instance handle in our global variable hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE; } // // FUNCTION: WndProc(HWND, unsigned, WORD, LONG) // // PURPOSE: Processes messages for the main window. // // WM_COMMAND - process the application menu // WM_PAINT - Paint the main window // WM_DESTROY - post a quit message and return // // LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { int wmId, wmEvent; PAINTSTRUCT ps; HDC hdc; TCHAR szHello[MAX_LOADSTRING]; LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING); switch (message) { case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // Parse the menu selections: switch (wmId) { case IDM_ABOUT: DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_PAINT: hdc = BeginPaint(hWnd, &ps); // TODO: Add any drawing code here... RECT rt; GetClientRect(hWnd, &rt); DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER); EndPaint(hWnd, &ps); break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0; } // Mesage handler for about box. LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { case WM_INITDIALOG: return TRUE; case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { EndDialog(hDlg, LOWORD(wParam)); return TRUE; } break; } return FALSE; }
上傳時間： 2016-12-29
上傳用戶：767483511
// 學生管理.cpp : Defines the entry point for the application. // #include "stdafx.h" #include "resource.h" #define MAX_LOADSTRING 100 // Global Variables: HINSTANCE hInst; // current instance TCHAR szTitle[MAX_LOADSTRING]; // The title bar text TCHAR szWindowClass[MAX_LOADSTRING]; // The title bar text // Foward declarations of functions included in this code module: ATOM MyRegisterClass(HINSTANCE hInstance); BOOL InitInstance(HINSTANCE, int); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); LRESULT CALLBACK About(HWND, UINT, WPARAM, LPARAM); struct person { char name[10]; int ID; int cj_yw; int cj_sx; struct person* next; struct person* pro; }per; int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { // TODO: Place code here. MSG msg; HACCEL hAccelTable; // Initialize global strings LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_MY, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // Perform application initialization: if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_MY); // Main message loop: while (GetMessage(&msg, NULL, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } return msg.wParam; } // // FUNCTION: MyRegisterClass() // // PURPOSE: Registers the window class. // // COMMENTS: // // This function and its usage is only necessary if you want this code // to be compatible with Win32 systems prior to the 'RegisterClassEx' // function that was added to Windows 95. It is important to call this function // so that the application will get 'well formed' small icons associated // with it. // ATOM MyRegisterClass(HINSTANCE hInstance) { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_MY); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = (LPCSTR)IDC_MY; wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL); return RegisterClassEx(&wcex); } // // FUNCTION: InitInstance(HANDLE, int) // // PURPOSE: Saves instance handle and creates main window // // COMMENTS: // // In this function, we save the instance handle in a global variable and // create and display the main program window. // BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) { HWND hWnd; hInst = hInstance; // Store instance handle in our global variable hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE; } // // FUNCTION: WndProc(HWND, unsigned, WORD, LONG) // // PURPOSE: Processes messages for the main window. // // WM_COMMAND - process the application menu // WM_PAINT - Paint the main window // WM_DESTROY - post a quit message and return // // LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { int wmId, wmEvent; PAINTSTRUCT ps; HDC hdc; TCHAR szHello[MAX_LOADSTRING]; LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING); switch (message) { case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // Parse the menu selections: switch (wmId) { case IDM_ABOUT: DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_PAINT: hdc = BeginPaint(hWnd, &ps); // TODO: Add any drawing code here... RECT rt; GetClientRect(hWnd, &rt); DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER); EndPaint(hWnd, &ps); break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0; } // Mesage handler for about box. LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { case WM_INITDIALOG: return TRUE; case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { EndDialog(hDlg, LOWORD(wParam)); return TRUE; } break; } return FALSE; }
標簽： 學生 計算器
上傳時間： 2016-12-29
上傳用戶：767483511
/****************temic*********t5557***********************************/ #include <at892051.h> #include <string.h> #include <intrins.h> #include <stdio.h> #define uchar unsigned char #define uint unsigned int #define ulong unsigned long //STC12C2051AD的SFR定義 sfr WDT_CONTR = 0xe1;//stc2051的看門狗?????? /**********全局常量************/ //寫卡的命令 #define write_command0 0//寫密碼 #define write_command1 1//寫配置字 #define write_command2 2//密碼寫數據 #define write_command3 3//喚醒 #define write_command4 4//停止命令 #define TRUE 1 #define FALSE 0 #define OK 0 #define ERROR 255 //讀卡的時間參數us #define ts_min 250//270*11.0592/12=249//取近似的整數 #define ts_max 304//330*11.0592/12=304 #define t1_min 73//90*11.0592/12=83:-10調整 #define t1_max 156//180*11.0592/12=166 #define t2_min 184//210*11.0592/12=194 #define t2_max 267//300*11.0592/12=276 //***********不采用中斷處理:采用查詢的方法讀卡時關所有中斷****************/ sbit p_U2270B_Standby = P3^5;//p_U2270B_Standby PIN=13 sbit p_U2270B_CFE = P3^3;//p_U2270B_CFE PIN=6 sbit p_U2270B_OutPut = P3^7;//p_U2270B_OutPut PIN=2 sbit wtd_sck = P1^7;//SPI總線 sbit wtd_si = P1^3; sbit wtd_so = P1^2; sbit iic_data = P1^2;//lcd IIC sbit iic_clk = P1^7; sbit led_light = P1^6;//測試綠燈 sbit led_light1 = P1^5;//測試紅燈 sbit led_light_ok = P1^1;//讀卡成功標志 sbit fengmingqi = P1^5; /***********全局變量************************************/ uchar data Nkey_a[4] = {0xA0, 0xA1, 0xA2, 0xA3};//初始密碼 //uchar idata card_snr[4]; //配置字 uchar data bankdata[28] = {1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7}; //存儲卡上用戶數據(1-7)7*4=28 uchar data cominceptbuff[6] = {1,2,3,4,5,6};//串口接收數組ram uchar command; //第一個命令 uchar command1;// //uint temp; uchar j,i; uchar myaddr = 8; //uchar ywqz_count,time_count; //ywqz jishu: uchar bdata DATA; sbit BIT0 = DATA^0; sbit BIT1 = DATA^1; sbit BIT2 = DATA^2; sbit BIT3 = DATA^3; sbit BIT4 = DATA^4; sbit BIT5 = DATA^5; sbit BIT6 = DATA^6; sbit BIT7 = DATA^7; uchar bdata DATA1; sbit BIT10 = DATA1^0; sbit BIT11 = DATA1^1; sbit BIT12 = DATA1^2; sbit BIT13 = DATA1^3; sbit BIT14 = DATA1^4; sbit BIT15 = DATA1^5; sbit BIT16 = DATA1^6; sbit BIT17 = DATA1^7; bit i_CurrentLevel;//i_CurrentLevel BIT 00H(Saves current level of OutPut pin of U2270B) bit timer1_end; bit read_ok = 0; //緩存定時值,因用同一個定時器 union HLint { uint W; struct { uchar H;uchar L; } B; };//union HLint idata a union HLint data a; //緩存定時值,因用同一個定時器 union HLint0 { uint W; struct { uchar H; uchar L; } B; };//union HLint idata a union HLint0 data b; /**********************函數原型*****************/ //讀寫操作 void f_readcard(void);//全部讀出1~7 AOR喚醒 void f_writecard(uchar x);//根據命令寫不同的內容和操作 void f_clearpassword(void);//清除密碼 void f_changepassword(void);//修改密碼 //功能子函數 void write_password(uchar data *data p);//寫初始密碼或數據 void write_block(uchar x,uchar data *data p);//不能用通用指針 void write_bit(bit x);//寫位 /*子函數區*****************************************************/ void delay_2(uint x) //延時,時間x*10us@12mhz,最小20us@12mhz { x--; x--; while(x) { _nop_(); _nop_(); x--; } _nop_();//WDT_CONTR=0X3C;不能頻繁的復位 _nop_(); } ///////////////////////////////////////////////////////////////////// void initial(void) { SCON = 0x50; //串口方式1,允許接收 //SCON =0x50; //01010000B:10位異步收發,波特率可變,SM2=0不用接收到有效停止位才RI=1, //REN=1允許接收 TMOD = 0x21; //定時器1 定時方式2(8位),定時器0 定時方式1(16位) TCON = 0x40; //設定時器1 允許開始計時(IT1=1) TH1 = 0xfD; //FB 18.432MHz 9600 波特率 TL1 = 0xfD; //fd 11.0592 9600 IE = 0X90; //EA=ES=1 TR1 = 1; //啟動定時器 WDT_CONTR = 0x3c;//使能看門狗 p_U2270B_Standby = 0;//單電源 PCON = 0x00; IP = 0x10;//uart you xian XXXPS PT1 PX1 PT0 PX0 led_light1 = 1; led_light = 0; p_U2270B_OutPut = 1; } /************************************************/ void f_readcard()//讀卡 { EA = 0;//全關,防止影響跳變的定時器計時 WDT_CONTR = 0X3C;//喂狗 p_U2270B_CFE = 1;// delay_2(232); //>2.5ms /* // aor 用喚醒功能來防碰撞 p_U2270B_CFE = 0; delay_2(18);//start gap>150us write_bit(1);//10=操作碼讀0頁 write_bit(0); write_password(&bankdata[24]);//密碼block7 p_U2270B_CFE =1 ;// delay_2(516);//編程及確認時間5.6ms */ WDT_CONTR = 0X3C;//喂狗 led_light = 0; b.W = 0; while(!(read_ok == 1)) { //while(p_U2270B_OutPut);//等一個穩定的低電平?超時判斷? while(!p_U2270B_OutPut);//等待上升沿的到來同步信號檢測1 TR0 = 1; //deng xia jiang while(p_U2270B_OutPut);//等待下降沿 TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1;//定時器晚啟動10個周期 //同步頭 if((324 < a.W) && (a.W < 353)) ;//檢測同步信號1 else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } //等待上升沿 while(!p_U2270B_OutPut); TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1;//b.N1<<=8; if(a.B.L < 195);//0.5p else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } //讀0~7塊的數據 for(j = 0;j < 28;j++) { //uchar i; for(i = 0;i < 16;i++)//8個位 { //等待下降沿的到來 while(p_U2270B_OutPut); TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1; if(t2_max < a.W/*)&&(a.W < t2_max)*/)//1P { b.W >>= 2;//先左移再賦值 b.B.L += 0xc0; i++; } else if(t1_min < a.B.L/*)&&(a.B.L < t1_max)*/)//0.5p { b.W >>= 1; b.B.L += 0x80; } else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } i++; while(!p_U2270B_OutPut);//上升 TR0 = 0; a.B.H = TH0; a.B.L = TL0; TH0 = TL0 = 0; TR0 = 1; if(t2_min < a.W/*)&&(a.W < t2_max)*/)//1P { b.W >>= 2; i++; } else if(t1_min < a.B.L/*a.W)&&(a.B.L < t1_max)*/)//0.5P //else if(!(a.W==0)) { b.W >>= 1; //temp+=0x00; //led_light1=0;led_light=1;delay_2(40000); } else { TR0 = 0; TH0 = TL0 = 0; goto read_error; } i++; } //取出奇位 DATA = b.B.L; BIT13 = BIT7; BIT12 = BIT5; BIT11 = BIT3; BIT10 = BIT1; DATA = b.B.H; BIT17 = BIT7; BIT16 = BIT5; BIT15 = BIT3; BIT14 = BIT1; bankdata[j] = DATA1; } read_ok = 1;//讀卡完成了 read_error: _nop_(); } } /***************************************************/ void f_writecard(uchar x)//寫卡 { p_U2270B_CFE = 1; delay_2(232); //>2.5ms //psw=0 standard write if (x == write_command0)//寫密碼:初始化密碼 { uchar i; uchar data *data p; p = cominceptbuff; p_U2270B_CFE = 0; delay_2(31);//start gap>330us write_bit(1);//寫操作碼1:10 write_bit(0);//寫操作碼0 write_bit(0);//寫鎖定位0 for(i = 0;i < 35;i++) { write_bit(1);//寫數據位1 } p_U2270B_CFE = 1; led_light1 = 0; led_light = 1; delay_2(40000);//測試使用 //write_block(cominceptbuff[4],p); p_U2270B_CFE = 1; bankdata[20] = cominceptbuff[0];//密碼存入 bankdata[21] = cominceptbuff[1]; bankdata[22] = cominceptbuff[2]; bankdata[23] = cominceptbuff[3]; } else if (x == write_command1)//配置卡參數:初始化 { uchar data *data p; p = cominceptbuff; write_bit(1);//寫操作碼1:10 write_bit(0);//寫操作碼0 write_bit(0);//寫鎖定位0 write_block(cominceptbuff[4],p); p_U2270B_CFE= 1; } //psw=1 pssword mode else if(x == write_command2) //密碼寫數據 { uchar data*data p; p = &bankdata[24]; write_bit(1);//寫操作碼1:10 write_bit(0);//寫操作碼0 write_password(p);//發口令 write_bit(0);//寫鎖定位0 p = cominceptbuff; write_block(cominceptbuff[4],p);//寫數據 } else if(x == write_command3)//aor //喚醒 { //cominceptbuff[1]操作碼10 X xxxxxB uchar data *data p; p = cominceptbuff; write_bit(1);//10 write_bit(0); write_password(p);//密碼 p_U2270B_CFE = 1;//此時數據不停的循環傳出 } else //停止操作碼 { write_bit(1);//11 write_bit(1); p_U2270B_CFE = 1; } p_U2270B_CFE = 1; delay_2(560);//5.6ms } /************************************/ void f_clearpassword()//清除密碼 { uchar data *data p; uchar i,x; p = &bankdata[24];//原密碼 p_U2270B_CFE = 0; delay_2(18);//start gap>150us //操作碼10:10xxxxxxB write_bit(1); write_bit(0); for(x = 0;x < 4;x++)//發原密碼 { DATA = *(p++); for(i = 0;i < 8;i++) { write_bit(BIT0); DATA >>= 1; } } write_bit(0);//鎖定位0:0 p = &cominceptbuff[0]; write_block(0x00,p);//寫新配置參數:pwd=0 //密碼無效:即清除密碼 DATA = 0x00;//停止操作碼00000000B for(i = 0;i < 2;i++) { write_bit(BIT7); DATA <<= 1; } p_U2270B_CFE = 1; delay_2(560);//5.6ms } /*********************************/ void f_changepassword()//修改密碼 { uchar data *data p; uchar i,x,addr; addr = 0x07;//block7 p = &Nkey_a[0];//原密碼 DATA = 0x80;//操作碼10:10xxxxxxB for(i = 0;i < 2;i++) { write_bit(BIT7); DATA <<= 1; } for(x = 0;x < 4;x++)//發原密碼 { DATA = *(p++); for(i = 0;i < 8;i++) { write_bit(BIT7); DATA >>= 1; } } write_bit(0);//鎖定位0:0 p = &cominceptbuff[0]; write_block(0x07,p);//寫新密碼 p_U2270B_CFE = 1; bankdata[24] = cominceptbuff[0];//密碼存入 bankdata[25] = cominceptbuff[1]; bankdata[26] = cominceptbuff[2]; bankdata[27] = cominceptbuff[3]; DATA = 0x00;//停止操作碼00000000B for(i = 0;i < 2;i++) { write_bit(BIT7); DATA <<= 1; } p_U2270B_CFE = 1; delay_2(560);//5.6ms } /***************************子函數***********************************/ void write_bit(bit x)//寫一位 { if(x) { p_U2270B_CFE = 1; delay_2(32);//448*11.0592/120=42延時448us p_U2270B_CFE = 0; delay_2(28);//280*11.0592/120=26寫1 } else { p_U2270B_CFE = 1; delay_2(92);//192*11.0592/120=18 p_U2270B_CFE = 0; delay_2(28);//280*11.0592/120=26寫0 } } /*******************寫一個block*******************/ void write_block(uchar addr,uchar data *data p) { uchar i,j; for(i = 0;i < 4;i++)//block0數據 { DATA = *(p++); for(j = 0;j < 8;j++) { write_bit(BIT0); DATA >>= 1; } } DATA = addr <<= 5;//0地址 for(i = 0;i < 3;i++) { write_bit(BIT7); DATA <<= 1; } } /*************************************************/ void write_password(uchar data *data p) { uchar i,j; for(i = 0;i < 4;i++)// { DATA = *(p++); for(j = 0;j < 8;j++) { write_bit(BIT0); DATA >>= 1; } } } /*************************************************/ void main() { initial(); TI = RI = 0; ES = 1; EA = 1; delay_2(28); //f_readcard(); while(1) { f_readcard(); //讀卡 f_writecard(command1); //寫卡 f_clearpassword(); //清除密碼 f_changepassword(); //修改密碼 } }
標簽： 12345
上傳時間： 2017-10-20
上傳用戶：my_lcs
在本課中，我們要用一個按鍵來實現跑馬燈的 10 級調速。這又會涉及到鍵的去抖的問 題。 本課的試驗結果是，每按一次按鍵，跑馬速度就降低一級，共 10 級。 這里我們又增加了一個變量 speedlever，來保存當前的速度檔次。 在按鍵里的處理中，多了當前檔次的延時值的設置。 請看程序： ―――――――――――――――― #define uchar unsigned char //定義一下方便使用 #define uint unsigned int #define ulong unsigned long #include <reg52.h> //包括一個 52 標準內核的頭文件 sbit P10 = P1^0; //頭文件中沒有定義的 IO 就要自己來定義了 sbit P11 = P1^1; sbit P12 = P1^2; sbit P13 = P1^3; sbit K1= P3^2; bit ldelay=0; //長定時溢出標記,預置是 0 uchar speed=10; //設置一個變量保存默認的跑馬燈的移動速度 uchar speedlever=0; //保存當前的速度檔次 char code dx516[3] _at_ 0x003b;//這是為了仿真設置的 //一個按鍵控制的 10 級變速跑馬燈試驗 void main(void) // 主程序 { uchar code ledp[4]={0xfe,0xfd,0xfb,0xf7};//預定的寫入 P1 的值 uchar ledi; //用來指示顯示順序 uint n; RCAP2H =0x10; //賦 T2 的預置值 0x1000，溢出 30 次就是 1 秒鐘 RCAP2L =0x00; TR2=1; //啟動定時器 ET2=1; //打開定時器 2 中斷 EA=1; //打開總中斷 while(1) //主程序循環 { if(ldelay) //發現有時間溢出標記，進入處理 { ldelay=0; //清除標記 P1=ledp[ledi]; //讀出一個值送到 P1 口 ledi++; //指向下一個 if(ledi==4) { ledi=0; //到了最后一個燈就換到第一個 } } if(!K1) //如果讀到 K1 為 0 { for(n=0;n<1000;n++); //等待按鍵穩定 while(!K1); //等待按鍵松開 for(n=0;n<1000;n++); //等待按鍵穩定松開 speedlever++; if(speedlever==10)speedlever=0; speed=speedlever*3; //檔次和延時之間的預算法則，也可以用查表方法，做出 不規則的法則 } } } //定時器 2 中斷 timer2() interrupt 5 { static uchar t; TF2=0; t++; if((t==speed)||(t>30)) //比較一個變化的數值，以實現變化的時間溢出,同時限制了最慢速 度為 1 秒 { t=0; ldelay=1;//每次長時間的溢出，就置一個標記，以便主程序處理 } } ―――――――――――――――――――――― 請打開 lesson11 目錄的工程，編譯，運行，看結果： 按 K1，速度則降低一次，總共 10 個檔次。
上傳時間： 2017-11-06
上傳用戶：szcyclone
LED 一般是恒流操作的，如何改變 LED 的亮度呢？答案就是 PWM 控制。在一定的 頻率的方波中，調整高電平和低電平的占空比，即可實現。比如我們用低電平點亮一個 LED 燈，我們假設把一個頻率周期分為 10 個時間等份，如果方波中的高低電平占空比是 9：1， 這是就是一個比較暗的亮度，如果方波中高低電平占空比是 10：0，這時，全部是高電平， 燈是滅的。如果占空比是 5：5，就是一個中間亮度，如果高低比是 1：9，是一個比較亮的 亮度，如果高低是 0：10，這時全部是低電平，就是最亮的。 實際上應用中，電視屏幕墻中的幾十百萬 LED 象素都是這樣控制的，而且每一個象素 都有紅綠藍 3 個 LED，每個 LED 可以變化的亮度是幾百到幾萬或者更多的級別，以實現真 彩色的顯示。還有在您的手機中，背光燈的亮度如果是可以變化的，也應該是這種工作方式。 目前的城市彩燈也有很多都使用了 LED，需要控制亮度是也是 PWM 控制。 下面來分析我們的例程，在這個例程中，我們將定時器 2 溢出定為 1/1200 秒。每 10 次脈沖輸出一個 120HZ 頻率。這每 10 次脈沖再用來控制高低電平的 10 個比值。這樣，在 每個 1/120 秒的方波周期中，我們都可以改變方波的輸出占空比，從而控制 LED 燈的 10 個 級別的亮度。 為什么輸出方波的頻率要 120HZ 這么高？因為如果頻率太低，人眼就會看到閃爍感 覺。一般起碼要在 60HZ 以上才感覺好點，120HZ 就基本上看不到閃爍，只能看到亮度的變 化了。 下面請看程序，程序中有比較多的注釋： ――――――――――――――――――――――― #define uchar unsigned char //定義一下方便使用 #define uint unsigned int #define ulong unsigned long #include <reg52.h> //包括一個 52 標準內核的頭文件 sbit P10 = P1^0; //要控制的 LED 燈 sbit K1= P3^2; //按鍵 K1 uchar scale;//用于保存占空比的輸出 0 的時間份額,總共 10 份 char code dx516[3] _at_ 0x003b;//這是為了仿真設置的 //模擬 PWM 輸出控制燈的 10 個亮度級別 void main(void) // 主程序 { uint n; RCAP2H =0xF3; //賦 T2 的預置值，溢出 1 次是 1/1200 秒鐘 RCAP2L =0x98; TR2=1; //啟動定時器 ET2=1; //打開定時器 2 中斷 EA=1; //打開總中斷 while(1) //程序循環 { ;//主程序在這里就不斷自循環，實際應用中，這里是做主要工作 for(n=0;n<50000;n++); //每過一會兒就自動加一個檔次的亮度 scale++; if(scale==10)scale=0; } } //1/1200 秒定時器 2 中斷 timer2() interrupt 5 { static uchar tt; //tt 用來保存當前時間在一秒中的比例位置 TF2=0; tt++; if(tt==10) //每 1/120 秒整開始輸出低電平 { tt=0; if(scale!=0) //這里加這一句是為了消除滅燈狀態產生的鬼影 P10=0; } if(scale==tt) //按照當前占空比切換輸出高電平 P10=1; } ―――――――――――――――――― 在主程序中，每延時一段時間，就自動換一個占空比，以使亮度自動變化，方便觀察。 編譯，運行，看結果。 可以看到，LED 的亮度以每種亮度 1 秒左右不斷變化，共有 10 個級別。
上傳時間： 2017-11-06
上傳用戶：szcyclone
Lithium–sulfur (Li–S) batteries with high energy density and long cycle life are considered to be one of the most promising next-generation energy-storage systems beyond routine lithium-ion batteries. Various approaches have been proposed to break down technical barriers in Li–S battery systems. The use of nanostructured metal oxides and sulfides for high sulfur utilization and long life span of Li–S batteries is reviewed here. The relationships between the intrinsic properties of metal oxide/sulfide hosts and electrochemical performances of Li–S batteries are discussed. Nanostructured metal oxides/ sulfides hosts used in solid sulfur cathodes, separators/interlayers, lithium- metal-anode protection, and lithium polysulfides batteries are discussed respectively. Prospects for the future developments of Li–S batteries with nanostructured metal oxides/sulfides are also discussed.
上傳時間： 2017-11-23
上傳用戶：653357637
精度除法函數。 調用函數，并輸入被除數、除數和精確到小數點后多少位。即可得到商的整數部分和小數部分。 /*************************精度除法函數********************************/ //======================================================================== // 函數: Void chufa(unsigned long beichushu,unsigned long chushu, unsigned char wei) // 描述: 精度除法 // 參數: unsigned long beichushu, 被除數 // unsigned long chushu, 除數 // unsigned char wei 精確到小數點后多少位 // 返回: 無. // 版本: V1.0, 2017-8-3 //========================================================================
上傳時間： 2018-04-16
上傳用戶：qibao9891
Abstract—In the future communication applications, users may obtain their messages that have different importance levels distributively from several available sources, such as distributed storage or even devices belonging to other users. This scenario is the best modeled by the multilevel diversity coding systems (MDCS). To achieve perfect (information-theoretic) secrecy against wiretap channels, this paper investigates the fundamental limits on the secure rate region of the asymmetric MDCS (AMDCS), which include the symmetric case as a special case. Threshold perfect secrecy is added to the AMDCS model. The eavesdropper may have access to any one but not more than one subset of the channels but know nothing about the sources, as long as the size of the subset is not above the security level. The question of whether superposition (source separation) coding is optimal for such an AMDCS with threshold perfect secrecy is answered. A class of secure AMDCS (S-AMDCS) with an arbitrary number of encoders is solved, and it is shown that linear codes are optimal for this class of instances. However, in contrast with the secure symmetric MDCS, superposition is shown to be not optimal for S-AMDCS in general. In addition, necessary conditions on the existence of a secrecy key are determined as a design guideline.
標簽： Fundamental Limits Secure Class on of
上傳時間： 2020-01-04
上傳用戶：kddlas
Today’s wireless services have come a long way since the roll out of the conventional voice-centric cellular systems. The demand for wireless access in voice and high rate data multi-media applications has been increasing. New generation wireless communication systems are aimed at accommodating this demand through better resource management and improved transmission technologies.
標簽： Radio Cognitive Software Defined
上傳時間： 2020-05-26
上傳用戶：shancjb
