ADS-B-demodulated-code.rar_ADS-B DF17_ADS-B DF17_ADS_b_df17_民航

/********************************************************************* * FileName: adsbin.c * Dependencies: See INCLUDES section below * Processor: PIC18 * Compiler: C18 2.30.01+ * Company: sprut * Copyright: 2007-2010 Joerg Bredendiek (sprut) * * ********************************************************************/ /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /** I N C L U D E S **********************************************************/ #include <p18cxxx.h> #include <usart.h> #include "system\typedefs.h" #include "system\usb\usb.h" #include "io_cfg.h" // I/O pin mapping #include "delays.h" //#include "system\interrupt\interrupt.h" #include "user\user.h" #include "user\adsbin.h" /** V A R I A B L E S ********************************************************/ #pragma udata /** D E C L A R A T I O N S **************************************************/ #pragma code // AAA0 ... AAA6 ...AAA11 ... AAA13 // Warten und finden eines Datenblocks // wenn er gefunden wird, dann // Einschreiben in adsb[0..13] // 56Bit:Lang=0 / 112Bit:Lang=1 // Rueckkehr mit w=0 // wenn er NICHT gefunden wird, dann // Rueckkehr mit w=1 // Anzahl der Suchschleifen: adsbLoopH-adsbLoopL // 25600 Schleifen in 15 ms => 0.6 us pro Schleife ~ 7 Befehle // // das ist eine der unelegantesten routinen die denkbar ist // aber sie funktioniert // never touch a running system! char adsb_in(void) { _asm BCF INTCON, GIEH, A BCF PORTC, 1, A // HDR_OUT BRA Start_Hdr // Fehler im Datenblock Error_Data: // Einstieg: // Fehler im Header Error_Hdr: DECFSZ adsbLoopL, F, 1 // 255 erfolglose Leseversuche, outer loop BRA Start_Hdr // neuer Versuch kurze Schleife: 7 Zyklen = 0.5833 us DECFSZ adsbLoopH, F, 1 BRA Start_Hdr // neuer Versuch lange Schleife: 9 Zyklen = 0.75 us, Durchschnitt = 0.58398 us BSF INTCON, GIEH, A MOVLW 1 // true, Fehler, nichts empfangen RETURN 0 // Einlesen : ist das ein Header ? Start_Hdr: BTFSC PORTC, 0, A // 1 BTFSS PORTC, 0, A // 0,166 us lang BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSC PORTC, 0, A // 1 BTFSS PORTC, 0, A BRA _Skip_Pulse // es wurde erst der 2. Puls gefunden, deshalb vorspringen NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP _Skip_Pulse: // ab hier kann man auch die TOA bestimmen movf TMR0L,W,A //NOP 0xFD6 RAM location in Access RAM (BSR register is ignored) movwf Time0,1 //NOP RAM bank is specified by BSR register BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr movf TMR0H,W,A //NOP 0xFD7 RAM location in Access RAM (BSR register is ignored) movwf Time1,1 //NOP RAM bank is specified by BSR register NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSC PORTC, 0, A // 1 BTFSS PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSC PORTC, 0, A // 1 BTFSS PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP NOP NOP BTFSS PORTC, 0, A // 0 BTFSC PORTC, 0, A BRA Error_Hdr NOP BCF PORTC, 2, A // altes frame nun ungueltig BSF PORTC, 1, A // es folgt der Datenblock // 5 Bit Format-Number //Lang = 0 // DF00 00000 56 bit // DF04 00100 56 bit // DF05 00101 56 bit // DF11 01011 56 bit // Lang = 1 // DF16 10000 112 bit // DF17 10001 112 bit // DF19 10011 112 bit // DF20 10100 112 bit // DF21 10101 112 bit // DF22 10110 112 bit // DF24 11000 112 bit // // das erste Bit unterscheidet zwischen 56 und 112 bit RRCF PORTC, W, A RLCF AAA0, F, 1 CLRF Lang, 1 // 56 oder 112 bit noch unbekannt BTFSC AAA0, 0, 1 // Test 56 oder 112 Bit ? INCF Lang, F, 1 // 112 Bit : Lang = 1 NOP MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BZ Error_Data // Fehler im Datenblock NOP NOP RRCF PORTC, W, A RLCF AAA0, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BNZ BIT02_ok BRA Error_Data BIT02_ok: NOP RRCF PORTC, W, A RLCF AAA0, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BNZ BIT03_ok BRA Error_Data BIT03_ok: NOP RRCF PORTC, W, A RLCF AAA0, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BNZ BIT04_ok BRA Error_Data BIT04_ok: NOP RRCF PORTC, W, A RLCF AAA0, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BNZ BIT05_ok BRA Error_Data BIT05_ok: NOP RRCF PORTC, W, A RLCF AAA0, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BNZ BIT06_ok BRA Error_Data BIT06_ok: NOP RRCF PORTC, W, A RLCF AAA0, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BNZ BIT07_ok BRA Error_Data BIT07_ok: NOP RRCF PORTC, W, A RLCF AAA0, F, 1 NOP NOP NOP BSF ADCON0, 1, A MOVF PORTC, W, A XORWF AAA0, W, 1 ANDLW 0x01 BNZ BIT08_ok BRA Error_Data BIT08_ok: NOP // byte 2 RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW 0x01 BNZ BIT09_ok BRA Error_Data BIT09_ok: NOP RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW 0x01 BNZ BIT10_ok BRA Error_Data BIT10_ok: NOP RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW 0x01 BNZ BIT11_ok BRA Error_Data BIT11_ok: NOP RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW 0x01 BNZ BIT12_ok BRA Error_Data BIT12_ok: NOP RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW 0x01 BNZ BIT13_ok BRA Error_Data BIT13_ok: NOP RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW 0x01 BNZ BIT14_ok BRA Error_Data BIT14_ok: NOP RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW 0x01 BNZ BIT15_ok BRA Error_Data BIT15_ok: NOP RRCF PORTC, W, A RLCF AAA1, F, 1 NOP NOP NOP NOP MOVF PORTC, W, A XORWF AAA1, W, 1 ANDLW