我正在尝试使用便宜的电视遥控器为类似危险的游戏创建学生反应系统。它们是红外线，NEC协议。串行监视器显示学生按下按钮，以便他们作出回应。
我使用TSOP 4838接收器连接到带有电容器的Arduino Uno，到目前为止只使用Arduino IDE软件附带的串行监视器。我的代码显示在下方。
只要有2名或更多学生在相隔半秒内没有按下按钮，一切正常。如果发生这种情况，我在串行监视器上没有输出。我希望我可以对我的草图或IRremote.h或IRremoteInt.h文件进行一些更改，以便更快地识别信号，以便我的显示列表首先点击谁。 IRremote.h：
*/
* IRremote v1.1
* By Chris Targett
* November 2011
*
* Based on Ken Shirriff's Version 0.11 of his IR-Remote library August, 2009
* https://github.com/shirriff/Arduino-IRremote
*/
#ifndef IRremote_h
#define IRremote_h
// The following are compile-time library options.
// If you change them, recompile the library.
// If DEBUG is defined, a lot of debugging output will be printed during decoding.
// TEST must be defined for the IRtest unittests to work. It will make some
// methods virtual, which will be slightly slower, which is why it is optional.
// #define DEBUG
// #define TEST
// Results returned from the decoder
class decode_results {
public:
int decode_type; // NEC, SONY, RC5, RC6, DISH, SHARP, SAMSUNG, JVC, UNKNOWN
unsigned long value; // Decoded value
unsigned long address; // address for panasonic codes
int bits; // Number of bits in decoded value
volatile unsigned int *rawbuf; // Raw intervals in .5 us ticks
int rawlen; // Number of records in rawbuf.
};
// Values for decode_type
#define NEC 1
#define SONY 2
#define RC5 3
#define RC6 4
#define DISH 5
#define SHARP 6
#define SAMSUNG 7
#define JVC 8
#define PANASONIC 9
#define UNKNOWN -1
// Decoded value for NEC when a repeat code is received
#define REPEAT 0xffffffff
// main class for receiving IR
class IRrecv
{
public:
IRrecv(int recvpin);
void blink13(int blinkflag);
int decode(decode_results *results);
void enableIRIn();
void resume();
private:
// These are called by decode
int getRClevel(decode_results *results, int *offset, int *used, int t1);
long decodeNEC(decode_results *results);
long decodeSony(decode_results *results);
long decodeSamsung(decode_results *results);
long decodeRC5(decode_results *results);
long decodeRC6(decode_results *results);
long decodeJVC(decode_results *results);
long decodeHash(decode_results *results);
long decodePanasonic(decode_results *results);
int compare(unsigned int oldval, unsigned int newval);
}
;
// Only used for testing; can remove virtual for shorter code
#ifdef TEST
#define VIRTUAL virtual
#else
#define VIRTUAL
#endif
class IRsend
{
public:
IRsend() {}
void sendNEC(unsigned long data, int nbits);
void sendSony(unsigned long data, int nbits);
void sendSamsung(unsigned long data, int nbits);
void sendRaw(unsigned int buf[], int len, int hz);
void sendRC5(unsigned long data, int nbits);
void sendRC6(unsigned long long data, int nbits);
void sendDISH(unsigned long data, int nbits);
void sendSharp(unsigned long data, int nbits);
void sendJVC(unsigned long data, int nbits, int repeat);
void sendPanasonic(unsigned long address, unsigned long data);
// private:
void enableIROut(int khz);
VIRTUAL void mark(int usec);
VIRTUAL void space(int usec);
}
;
// Some useful constants
#define USECPERTICK 50
#define RAWBUF 76
// Marks tend to be 100us too long, and spaces 100us too short
// when received due to sensor lag.
#define MARK_EXCESS 100
#endif
这是IRremoteInt.h
/*
* IRremote v1.1
* By Chris Targett
* November 2011
*
* Based on Ken Shirriff's Version 0.11 of his IR-Remote library August, 2009
* https://github.com/shirriff/Arduino-IRremote
*/
#ifndef IRremoteint_h
#define IRremoteint_h
#include <Arduino.h>
#define CLKFUDGE 5 // fudge factor for clock interrupt overhead
#define CLK 256 // max value for clock (timer 2)
#define PRESCALE 8 // timer2 clock prescale
#define SYSCLOCK 16000000 // main Arduino clock
#define CLKSPERUSEC (SYSCLOCK/PRESCALE/1000000) // timer clocks per microsecond
#define ERR 0
#define DECODED 1
#define BLINKLED 13
// defines for setting and clearing register bits
#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif
// clock timer reset value
#define INIT_TIMER_COUNT2 (CLK - USECPERTICK*CLKSPERUSEC + CLKFUDGE)
#define RESET_TIMER2 TCNT2 = INIT_TIMER_COUNT2
// pulse parameters in usec
#define NEC_HDR_MARK 9000
#define NEC_HDR_SPACE 4500
#define NEC_BIT_MARK 560
#define NEC_ONE_SPACE 1600
#define NEC_ZERO_SPACE 560
#define NEC_RPT_SPACE 2250
#define SONY_HDR_MARK 2400
#define SONY_HDR_SPACE 600
#define SONY_ONE_MARK 1200
#define SONY_ZERO_MARK 600
#define SONY_RPT_LENGTH 45000
#define RC5_T1 889
#define RC5_RPT_LENGTH 46000
#define RC6_HDR_MARK 2666
#define RC6_HDR_SPACE 889
#define RC6_T1 444
#define RC6_RPT_LENGTH 46000
#define SAMSUNG_HDR_MARK 4500
#define SAMSUNG_BITS 32
#define SAMSUNG_HDR_SPACE 4500
#define SAMSUNG_BIT_MARK 560
#define SAMSUNG_ONE_SPACE 1600
#define SAMSUNG_ZERO_SPACE 600
#define SHARP_BIT_MARK 245
#define SHARP_ONE_SPACE 1805
#define SHARP_ZERO_SPACE 795
#define SHARP_GAP 600000
#define SHARP_TOGGLE_MASK 0x3FF
#define SHARP_RPT_SPACE 3000
#define DISH_HDR_MARK 400
#define DISH_HDR_SPACE 6100
#define DISH_BIT_MARK 400
#define DISH_ONE_SPACE 1700
#define DISH_ZERO_SPACE 2800
#define DISH_RPT_SPACE 6200
#define DISH_TOP_BIT 0x8000
#define SHARP_BITS 15
#define DISH_BITS 16
#define JVC_HDR_MARK 8000
#define JVC_HDR_SPACE 4000
#define JVC_BIT_MARK 600
#define JVC_ONE_SPACE 1600
#define JVC_ZERO_SPACE 550
#define JVC_RPT_LENGTH 60000
#define PANASONIC_HDR_MARK 3502
#define PANASONIC_HDR_SPACE 1750
#define PANASONIC_BIT_MARK 502
#define PANASONIC_ONE_SPACE 1244
#define PANASONIC_ZERO_SPACE 370
#define TOLERANCE 25 // percent tolerance in measurements
#define LTOL (1.0 - TOLERANCE/100.)
#define UTOL (1.0 + TOLERANCE/100.)
#define _GAP 5000 // Minimum map between transmissions
#define GAP_TICKS (_GAP/USECPERTICK)
#define TICKS_LOW(us) (int) (((us)*LTOL/USECPERTICK))
#define TICKS_HIGH(us) (int) (((us)*UTOL/USECPERTICK + 1))
#ifndef DEBUG
#define MATCH(measured_ticks, desired_us) ((measured_ticks) >= TICKS_LOW(desired_us) && (measured_ticks) <= TICKS_HIGH(desired_us))
#define MATCH_MARK(measured_ticks, desired_us) MATCH(measured_ticks, (desired_us) + MARK_EXCESS)
#define MATCH_SPACE(measured_ticks, desired_us) MATCH((measured_ticks), (desired_us) - MARK_EXCESS)
// Debugging versions are in IRremote.cpp
#endif
// receiver states
#define STATE_IDLE 2
#define STATE_MARK 3
#define STATE_SPACE 4
#define STATE_STOP 5
// information for the interrupt handler
typedef struct {
uint8_t recvpin; // pin for IR data from detector
uint8_t rcvstate; // state machine
uint8_t blinkflag; // TRUE to enable blinking of pin 13 on IR processing
unsigned int timer; // state timer, counts 50uS ticks.
unsigned int rawbuf[RAWBUF]; // raw data
uint8_t rawlen; // counter of entries in rawbuf
}
irparams_t;
// Defined in IRremote.cpp
extern volatile irparams_t irparams;
// IR detector output is active low
#define MARK 0
#define SPACE 1
#define TOPBIT 0x80000000
#define NEC_BITS 32
#define SONY_BITS 12
#define JVC_BITS 32
#define MIN_RC5_SAMPLES 11
#define MIN_RC6_SAMPLES 1
#endif
这是我的草图：
#include <IRremote.h>
#include <IRremoteInt.h>
int RECV_PIN = 11;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup()
{
Serial.begin(9600);
irrecv.enableIRIn(); // Start the receiver
}
void loop()
{
if (irrecv.decode(&results))
{
if (results.value == 551520375) { //1
Serial.println("Team 1");
}
if (results.value == 551504055) { //2
Serial.println("Team 2");
}
if (results.value == 551536695) { //3
Serial.println("Team 3");
}
if (results.value == 551495895) { //4
Serial.println("Team 4");
}
if (results.value == 551528535) { //5
Serial.println("Team 5");
}
if (results.value == 551512215) { //6
Serial.println("Team 6");
}
if (results.value == 551544855) { //7
Serial.println("Team 7");
}
if (results.value == 551491815) { //8
Serial.println("Team 8");
}
if (results.value == 551524455) { //9
Serial.println("Team 9");
}
if (results.value == 551487735) { //10
Serial.println("Team 10");
}
// Serial.println(results.value);
irrecv.resume(); // Receive the next value
}
}
答案 0 :(得分：0)
总之 - 不是真的，也不可靠。问题是您的系统实际上是多次删除的。接收器是看到两个发射器的总和。调制和编码信号相加并因此被破坏的地方。
我有红外玩具魔杖，为了决斗我有一个胜利者继续发送JAM更宽松的后一个信号。
您可以尝试使用两种不同的调制频率。一个遥控器在36K，另一个在60K。 38K是典型的，并且存在显着的重叠。我看到36和40听到或腐败38K。所以我得到了可用解调器芯片的最远端; 36K和60K。但是，我怀疑您使用的是提供的可能无法更改的发射器。所以你必须找到一些或建立一个。
另外，使用预先构建的，你可以摆脱它的行为。你说1/2秒。这可能是因为它们正在重新发送重试，并且启动延迟和暂停超出了发送的NEC帧的延迟和暂停。
您还可以实现不同IR波长的RX / TX对。然而，大多数可购买的解调器IC都在标准波长上。我还建议尽可能不构建离散RX，因为它们集成的RX /解调器具有自动GAIN，就像那样。