Bonjour,
j'essaye de recuperer le signal ir d'une telecommande universal , en rc5
avec un recepteur tsop 1738 que j'envoi sur un pic 18f452
dans ccs le compilateur C pour pic j'ai trouver un driver pour cela N9085UD.C
mais je sais pas trop comment utiliser la fonction readIRremote(int8& button, int1 wait)
voici mon code
Code:#include <18f452.h> // Inclusion du Header correspondant au µC utilisé #fuses HS,NOWDT,NOPROTECT,NOBROWNOUT,NOLVP // Paramétrage des fusibles du microcontrôleur #use delay(clock=20000000) // Quartz de 20MHz #use rs232(baud=115200, xmit=PIN_C6,rcv=PIN_C7) // Liaison RS232 sur RC6 et RC7 à 115200b/s //****************************** // Librairies //****************************** #include <bootloader.h> #include <N9085UD.C> //****************************** #define IR_REMOTE_PIN PIN_B5 #define TIMER_1_DIV 2 #define LED1 PIN_B7 #define LED2 PIN_B6 //********************** // Programme principal //********************** main() { init_IRremote(); printf ("Test Telecommande IR : RC5 \r\n\n"); output_high(LED1); while (TRUE) { if(readIRremote()){ printf ("1 %u\r\n\n",readIRremote()); }else{ printf ("2 %u\r\n\n",readIRremote()); } }
vous avez une idee svp ?
merci d'avance pour toute aide
je met ici les sources du fichier N9085UD.C
Code://///////////////////////////////////////////////////////////////////////// //// Library for the N9085UD VCR / TV remote //// //// //// //// * Note: This driver uses timer one to decode a signal. Edit the //// //// line "#define TIMER_1_DIV" to configure timer one //// //// division. //// //// //// //// init_IRremote() //// //// Call before the readIRremote() function is used //// //// //// //// int1 readIRremote(int8& button, int1 wait) //// //// Read a button press from the IR remote //// //// * Will wait forever if TRUE is passed in, //// //// or will wait for one command period if FALSE //// //// * Returns a button code in button. See the code listing below //// //// * Returns the repeat bit from the signal. This alternates //// //// between 0 and 1 for each button press. //// //// //// //// The main program may define IR_REMOTE_PIN to override //// //// the default below. //// //// //// /////////////////////////////////////////////////////////////////////////// //// (C) Copyright 1996, 2003 Custom Computer Services //// //// This source code may only be used by licensed users of the CCS C //// //// compiler. This source code may only be distributed to other //// //// licensed users of the CCS C compiler. No other use, reproduction //// //// or distribution is permitted without written permission. //// //// Derivative programs created using this software in object code //// //// form are not restricted in any way. //// /////////////////////////////////////////////////////////////////////////// #ifndef _N9085UD #define _N9085UD #ifndef IR_REMOTE_PIN #define IR_REMOTE_PIN PIN_C1 #endif /////////////////////////////////////////////////////////////////////////// // The following allows the signal scan to work for different // timer 1 division settings. /////////////////////////////////////////////////////////////////////////// #ifndef TIMER_1_DIV #define TIMER_1_DIV 2 // Number of divisions for timer 1 #endif /////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////// // The following show the hexadecimal values returned by readIRremote() // and which button the value cooresponds with. /////////////////////////////////////////////////////////////////////////// ///////////////////////// //// Error Code //// #define VCR_TV_ERR 0xFF ///////////////////////// ///////////////////////// //// VCR Buttons //// #define VCR_ZERO 0x00 #define VCR_ONE 0x01 #define VCR_TWO 0x02 #define VCR_THREE 0x03 #define VCR_FOUR 0x04 #define VCR_FIVE 0x05 #define VCR_SIX 0x06 #define VCR_SEVEN 0x07 #define VCR_EIGHT 0x08 #define VCR_NINE 0x09 #define VCR_POWER 0x0C #define VCR_EJECT 0x2D #define VCR_TV 0x3E #define VCR_CHANUP 0x20 #define VCR_CHANDN 0x21 #define VCR_VCRPLUS 0x85 #define VCR_PLUS100 0x0A #define VCR_SLOW 0x28 #define VCR_SPEED 0x3A #define VCR_MENU 0x1D #define VCR_STATUS 0x0F #define VCR_CLEAR 0x31 #define VCR_MEMORY 0x3B #define VCR_REWIND 0x32 #define VCR_PLAY 0x35 #define VCR_FASTFWD 0x34 #define VCR_REC_OTR 0x37 #define VCR_STOP 0x36 #define VCR_PAUSE 0x29 ///////////////////////// ///////////////////////// //// TV Buttons //// #define TV_POWER 0x4C #define TV_CHANUP 0x60 #define TV_CHANDN 0x61 #define TV_VOLUP 0x50 #define TV_VOLDN 0x51 #define TV_MUTE 0x4D ///////////////////////// /////////////////////////////////////////////////////////////////////////// // The timer 1 overflow count is used for timeouts int8 timer1_overflows; // Function prototypes int1 IR_scanSignal(int16* width_buffer, int1 wait); int8 IR_decodeData(int8& button, int16* width_buffer); #ifndef TIMER_RATE #define TIMER_RATE getenv("clock") / 4 / TIMER_1_DIV #endif #define OVERFLOW_LIMIT (int)((float)TIMER_RATE / 65535.0 * 0.14 + 1.0) // Purpose: Initialize timer 1 and enable timer 1 interrupt for timeouts void init_IRremote() { #if TIMER_1_DIV == 1 setup_timer_1(T1_DIV_BY_1 | T1_INTERNAL); #elif TIMER_1_DIV == 2 setup_timer_1(T1_DIV_BY_2 | T1_INTERNAL); #elif TIMER_1_DIV == 4 setup_timer_1(T1_DIV_BY_4 | T1_INTERNAL); #elif TIMER_1_DIV == 8 setup_timer_1(T1_DIV_BY_8 | T1_INTERNAL); #endif enable_interrupts(INT_TIMER1); enable_interrupts(GLOBAL); } // Purpose: Read a button press from an IR remote // Inputs: TRUE wait until a signal is received // FALSE wait for one command period, then return // Outputs: A button code. See the define listing above. int1 readIRremote(int8& button, int1 wait) { // A buffer to hold pulse widths int16 width_buffer[24]; if(IR_scanSignal(width_buffer, wait)) { button = VCR_TV_ERR; return 0; } else { return IR_decodeData(button, width_buffer); } } // Purpose: Interrupt service routine for timer 1 overflow // Increments an overflow counter #INT_TIMER1 void isr_timer1() { ++timer1_overflows; } // Purpose: Waits for an IR signal, then measures the pulse widths // Inputs: 1) A pointer to a buffer to fill with pulse widths // 2) TRUE to wait for a button. FALSE to allow for timeout // Outputs: 0 if a scan was successful, 1 if the scan failed int1 IR_scanSignal(int16* width_buffer, int1 wait) { int16 rise; int16 fall; int16* index; int8 i; index = width_buffer; // Reset the timeout to 0 timer1_overflows = 0; // Find long high pulse do { while(!input(IR_REMOTE_PIN) && (timer1_overflows < OVERFLOW_LIMIT*2)); rise = get_timer1(); while(input(IR_REMOTE_PIN) && (timer1_overflows < OVERFLOW_LIMIT*2)); fall = get_timer1(); if(!wait && (timer1_overflows > OVERFLOW_LIMIT)) { return 1; } } while((fall - rise) < (TIMER_RATE / 250)); // Reset the timeout to 0 timer1_overflows = 0; // Measure 24 pulse widths for(i = 0; i < 12; ++i) { // Wait for signal to rise. A timeout prevents an infinite loop. while(!input(IR_REMOTE_PIN) && timer1_overflows < OVERFLOW_LIMIT); rise = get_timer1(); *index = rise - fall; ++index; // Wait for signal to fall. A timeout prevents an infinite loop. while(input(IR_REMOTE_PIN) && timer1_overflows < OVERFLOW_LIMIT); fall = get_timer1(); *index = fall - rise; ++index; } // If a timeout occurred, then return with error if(timer1_overflows > OVERFLOW_LIMIT) { return 1; } // Set the index pointer back to the beginning of the buffer index = width_buffer; // Sometimes an IR sensor pulses sporadically // The following loop ensures good data for(i = 0; i < 17; ++i, ++index) { if(*index > (TIMER_RATE / 521) || *index < (TIMER_RATE / 1330)) { return 1; } } // Return no error return 0; } // Purpose: Decode Manchester encoded command and button number // Inputs: A pointer to a buffer containing pulse widths // Outputs: A button code. See the define listing above int1 IR_decodeData(int8& button, int16* width_buffer) { int1 bit_value = 1; int8 data = 0; int8 cmd = 0; int1 save_bit = 0; int8 bitCount = 0; // Decode 13 bits from the Manchester encoded data while(bitCount < 13) { // Invert the bit value and save if the phase changed if(*width_buffer > (TIMER_RATE / 781)) { save_bit = TRUE; bit_value = ~bit_value; } if(save_bit) { // The first 7 bits tell TV, VCR, or VCR PLUS+ // and the next 6 tell which button was pressed if(bitCount < 7) { shift_left(&cmd, 1, bit_value); } else { shift_left(&data, 1, bit_value); } ++bitCount; } save_bit = ~save_bit; ++width_buffer; } bit_value = bit_test(cmd, 5); // Find the command type switch(cmd & 0xDF) { case 0x45: cmd = 0x00; // VCR command break; case 0x40: cmd = 0x40; // TV command break; case 0x05: cmd = 0x80; // VCR PLUS+ break; } button = data | cmd; return bit_value; } #endif
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