Wireless module data encryption, anti-code check, send string "Abcdefghijklmnop" led strobe

"The original post must look, otherwise you can not understand this post"

Single chip microcomputer coded wireless module sending and receiving program

"description":

[Send side]:

LED on-off following send status

Send string "Abcdefghijklmnop"

Send the process, with "Brother Chun" GBK code to the string XOR operation encryption

Data verification: The use of anti-code verification, first send the source code, and then send anti-code, anti-jamming

[Receiving end]

Receive the encrypted source code, with "spring elder brother" GBK code to the string XOR operation Decrypt, obtains the source code

Receive anti-code, anti-code and source comparison

Receive string

Determines the string, each character controls the corresponding led to illuminate

【】

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"Send Side"

/************************************ Program name:    Wireless Module "Transmitter" program writer:    Brother Chun compilation Time: October 31, 2015 hardware support: stc12c5a60s2  external Crystal 12MHz Interface Description: P0.0 interface transmitter, send led on, send end led off encryption text:     spring Brother &NBSP;--&GT;GBK:B4  ba b8 e7 Check mode:     send data:     send string "Abcdefghijklmnop"/ /#include  <stc12c5a60s2. h> //single-Chip header file sbit out  = p1 ^ 0;   sbit led   = P0 ^ 0;  void DELAY_MS  (Unsigned int a) {     unsigned int i;    while ( a-- != 0) {         for (i = 0; i < 600; i++);     }}void ST  (void) {//Start code     OUT = 1; //     DELAY_MS  (6); &NBSP;&NBSP;&NBSP;&NBSP;OUT&NBSP;=&NBSP;0;&NBsp;//    delay_ms  (4);}  void BT  (bit s) {//Data bit code     OUT = 1;      led=! led;  // led=~led Send status Indication       DELAY_MS  (1);     OUT = 0;     DELAY_MS  (1);     if (s)    DELAY_MS  (1);}  void MT  (unsigned char a) {&NBSP;&NBSP;//8-bit data send     unsigned  char b,i,n;  a=a^0xB4^0xBA^0xB8^0xE7;//  Data encryption   GBK encoding corresponding to spring kanji is  0xb4 0xba  0xB8 0xE7;    b=~a;                    //  Reverse Code     for (i=0;i<8;i++ ) {       //  Send Source         n  = a & 0x80;        a = a << 1;         if (n == 0x80) &NBSP;BT (1); &NBSP;&NBSP;&NBSP;ELSE&NBSP;&NBSP;BT (0);     }    for (i=0;i<8;i++) {       //Send anti-code          n = b & 0x80;         b = b << 1;        if (n &NBSP;==&NBSP;0X80) &NBSP;BT (1); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;ELSE&NBSP;BT (0);     }}void END  (void) {MT (0xff);} Void str (UNSIGNED&NBSP;CHAR&NBSP;*STR) {  while (*str !=  ')  MT  (*str++);     *str = 0;}  void main  (void) {    while (1) {         st ();    str ("Abcdefghijklmnop");         end ();         delay_ ms  (+);     }}

"Receiving End"

/************************************ Program name:    Wireless Module "Receive" program writer:    Brother Chun compilation Time: October 31, 2015 hardware support: stc12c4052ad  external Crystal 12MHz Interface Description: P3.4 interface   Connect wireless data ,led   Decryption:     chun brother  -- >gbk:b4 ba b8 e7 receives the character:     receives the string "Abcdefghijklmnop" to determine the string "ABCDEFGHIJKLMNOP", Control LED light off ***************************************/#include  <stc12c2052ad. h> //single-Chip header file Sbit in =p3^4;sbit led1=p1^0;sbit led2=p1^1;sbit led3=p1^2;sbit  LED4=P1^3;sbit LED5=P1^4;sbit LED6=P1^5;sbit LED7=P1^6;sbit LED8=P1^7;unsigned  The char ir_buf[16]; //is used to save 16 8-bit source results unsigned char ir_bak[16]; //for 16 8-bit decoding results unsigned  char re_char[]={"Abcdefghijklmnop"}; //the string to be validated unsigned char length=16; //  Defines the length of the string for use with void delay_ms  (Unsigned int a) {    unsigned int  I;    while ( a-- ! = 0)  for (i = 0; i < 600; i++);}  unsigned int ir_get_low () {    tl1=0;    th1=0;     TR1=1;     //  if it is 0 cycles, cannot exceed 32.768ms     while (! in &&  (th1&0x80) ==0);                     TR1=0;         &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;RETURN&NBSP;TH1*256+TL1;}  unsigned int ir_get_high () {    tl1=0;    th1=0;     TR1=1;    //  if it is 1 cycles, it cannot exceed 32.768ms    while (in  &&  (th1&0x80) ==0);     tr1=0;    return th1 *256+TL1;}  void main (void) {Unsigned int temp;unsigned char i,j; The tmod=0x10; //  uses timer 1 to set 16-bit timing/counter while (1) {Restart:while (! in); Temp=ir_get_high ();  if (temp<5000 | |  temp>8000) { goto restart;  }temp=ir_get_low ();   if (temp<3000 | |  temp>6000) { goto restart;  }    //Only the above two tags are passed, indicating the sending end   Ready for (i=0;i<length;i++) {    //receives a length of bytes for (j=0;j<8;j++) {        //receive source Temp=ir_get_high ();  if (temp<500 | |  temp>1500)  goto restart;temp=ir_get_low ();   if (temp<500 | |  temp>2500)  goto restart;ir_buf[i]<<=1;  if (temp>1500)   Ir_Buf[ I]|=0x01;  }for (j=0;j<8;j++) {        //receive anti-code temp=ir_get_ High ();   if (temp<500 | |  temp>1500)  goto restart;temp=ir_get_low ();    if (temp<500 | |  temp>2500)  gOto restart;ir_bak[i]<<=1;       if (temp>1500)   Ir_ bak[i]|=0x01;} if (Ir_buf[i] != ~ir_bak[i])  goto restart; //Anti-code character check ir_buf[i]=ir_buf[i]^0xb4^0xba^0xb8^ 0xe7;  //data decryption   Brother Chun corresponding GBK character is 0xb4 0xba 0xb8 0xe7}if (ir_buf[0]== ' A ')  LED1=0;  if (ir_buf[1]== ' B ')  led2=0; delay_ms ( delay_ms);  if (ir_buf[2]== ' C ')  LED3= 0; delay_ms, if (ir_buf[3]== ' D ')  led4=0; delay_ms,  if (ir_buf[4]== ' E ')  LED5=0;  if (ir_buf[5]== ' F ')  led6=0; delay_ms ( delay_ms);  if (ir_buf[6]== ' G ')  LED7=  if (ir_buf[7]== ' H ')  led8=0; delay_ms (0; delay_ms),  if (ir_buf[8]== ' I ')    if (ir_buf[9]== ' J ')  led2=1; delay_ms (Led1=1; delay_ms);  if (Ir_Buf[10]== ' K ')  if (ir_buf[11]== ' L ')  led4=1; delay_ms ( led3=1; delay_ms);  if (Ir_Buf[12]== ' M ') &nbsP  if (ir_buf[13]== ' N ')  led6=1; delay_ms (Led5=1; delay_ms);  if (Ir_Buf[14]== ' O ')  if (ir_buf[15]== ' P ')  led8=1; delay_ms ( led7=1; delay_ms);      }}

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Wireless module data encryption, anti-code check, send string "Abcdefghijklmnop" led strobe