一、Arduino
/***************************************
* name:Infrared-Receiver
* function:press the Power key of a remote control,
* and both the LED attached and that connected to pin 13 on the Arduino Uno board will light up
* Then press any other key, and the LEDs will go out.
**************************************/
# include <IRremote.h>
const int irReceiverPin = 7;
const int ledPin = 13;
IRrecv irrecv(irReceiverPin); //Creates a variable of type IRecv
decode_results results;
void setup()
{
pinMode(ledPin,OUTPUT);
Serial.begin(9600); //initialize serial
irrecv.enableIRIn(); //enable ir receiver module
}
void loop()
{
if (irrecv.decode(&results)) //if the ir receiver module receive data
{
Serial.print("irCode: ");
Serial.print(results.value, HEX); //print the value in hexdeimal
Serial.print(", bits: ");
Serial.print(results.bits); //print the bits
irrecv.resume();//Receive the next value
}
delay(600); //600ms
if (results.value == 0xFFA25D)
{
digitalWrite(ledPin, HIGH); //turn on the led
}
else
{
digitalWrite(ledPin, LOW); //turn off the led
}
}
二、树莓派
2.1 树莓派环境配置
sudo su -c "grep '^deb' /etc/apt/sources.list |sed 's/^deb/deb-src/g' >/etc/apt/sources.list.d/deb-src.list"
sudo apt update
sudo apt install devscripts
sudo apt install dh-exec doxygen expect libasound2-dev libftdi1-dev libsystemd-dev libudev-dev libusb-1.0-0-dev libusb-dev man2html-base portaudio19-dev socat xsltproc python3-yaml
mkdir build
cd build
apt source lirc
wget https://raw.githubusercontent.com/neuralassembly/raspi/master/lirc-gpio-ir-0.10.patch
patch -p0 -i lirc-gpio-ir-0.10.patch
cd lirc-0.10.1
debuild -uc -us -b
cd ..
这里会失败报错
sudo apt install ./liblirc0_0.10.1-5.2_armhf.deb ./liblircclient0_0.10.1-5.2_armhf.deb ./lirc_0.10.1-5.2_armhf.deb
需要配置：/boot/config.txt和lirc_options.conf
sudo vi /boot/config.txt
然后在文件末尾添加如下：
dtoverlay=gpio-ir,gpio_pin=23 #红外输入口
dtoverlay=gpio-ir-tx,gpio_pin=22 #红外输出口
编辑/etc/lirc/lirc_options.conf
sudo cp /etc/lirc/lirc_options.conf.dist /etc/lirc/lirc_options.conf
通过XFTP将lircd.conf文件复制到到pi目录
sudo cp lircd.conf /etc/lirc/lircd.conf
lircd.conf的代码：
# Please make this file available to others
# by sending it to <lirc@bartelmus.de>
#
# this config file was automatically generated
# using lirc-0.9.0-pre1(default) on Mon Jan 4 07:04:19 2016
#
# contributed by
#
# brand: ./lircd.conf
# model no. of remote control:
# devices being controlled by this remote:
#
begin remote
name ./lircd.conf
flags RAW_CODES
eps 30
aeps 100
gap 96776
begin raw_codes
name KEY_CHANNELDOWN
8967 4540 604 591 569 592
567 593 569 591 567 592
566 594 567 600 560 594
567 1652 597 1652 601 1650
588 1672 579 1664 597 1654
588 1664 599 1653 587 1664
598 594 583 1634 596 599
565 595 563 597 563 1672
570 605 565 596 563 1655
593 600 560 1657 587 1672
591 1654 585 606 559 1658
587 39914 8971 2249 592
name KEY_CHANNEL
8907 4604 523 639 520 640
520 640 521 640 520 639
521 640 519 640 520 639
521 1728 524 1735 577 1668
584 1666 582 1671 522 1728
584 1668 523 1728 584 578
520 1727 587 1666 584 579
520 639 521 639 521 1727
584 578 521 1728 583 579
526 635 520 1727 524 1727
584 1667 584 579 520 1728
584 39927 8965 2252 522
name KEY_CHANNELUP
8964 4539 587 577 520 640
521 639 520 640 520 640
520 639 521 638 522 652
507 1729 582 1679 513 1725
585 1668 522 1728 585 1666
584 1667 546 1704 585 1666
523 1728 523 1726 587 607
490 669 491 644 515 1728
523 638 544 616 521 640
519 639 521 1728 584 1666
522 1727 524 639 521 1728
522 39974 8969 2249 524
name KEY_PREVIOUS
8905 4601 523 641 519 640
520 640 520 651 508 640
520 640 520 640 520 640
519 1727 585 1665 585 1666
585 1672 578 1668 583 1667
522 1730 521 1728 522 640
520 640 520 1727 524 639
520 640 519 640 519 1728
523 670 490 1728 583 1667
522 639 520 1728 523 1727
523 1726 586 577 520 1727
586 39903 8968 2251 588
name KEY_NEXT
8964 4540 549 644 517 644
517 643 516 616 544 644
516 644 515 644 521 640
516 1703 586 1666 585 1665
586 1667 549 1703 585 1672
579 1666 586 1667 585 607
518 643 516 643 516 644
515 616 546 615 545 1704
523 669 517 1702 547 1704
551 1702 548 1705 548 1702
583 1668 586 613 510 1703
586 39932 8935 2287 555
name KEY_PLAYPAUSE
8966 4520 586 607 569 590
571 588 568 590 568 591
568 591 568 591 569 590
567 1648 587 1670 578 1666
584 1666 582 1665 587 1664
601 1650 583 1665 583 1666
585 1665 585 608 564 594
565 593 565 594 567 1650
585 606 567 592 565 594
569 1647 583 1666 586 1663
585 1664 586 605 570 1649
584 39896 8977 2232 594
name KEY_VOLUMEUP
8889 4608 521 643 515 643
518 644 515 643 516 642
519 642 517 643 517 643
516 1734 518 1732 608 1645
518 1740 511 1733 518 1733
519 1734 608 1644 608 1643
518 662 588 1645 608 553
516 1735 517 642 517 643
518 643 517 644 516 1734
608 553 516 1734 519 644
613 1636 609 1664 498 1734
518 40014 8997 2228 610
name KEY_VOLUMEDOWN
8977 4517 549 642 575 586
573 586 574 584 574 585
574 586 573 585 574 586
573 1645 548 1699 553 1696
553 1697 608 1645 554 1694
552 1698 552 1699 551 1697
553 1698 606 1644 607 586
573 585 575 584 574 586
573 587 573 586 573 586
573 585 574 1644 605 1644
605 1645 605 1644 552 1697
607 39879 8934 2281 609
name KEY_EQUAL
8960 4542 608 588 571 589
579 580 571 589 574 586
573 588 572 588 573 587
572 1644 580 1671 582 1670
580 1670 582 1668 583 1666
609 1645 605 1645 580 1669
584 609 574 587 573 1652
598 587 573 587 572 589
572 587 572 587 573 1644
606 1643 581 612 575 1645
605 1644 582 1668 587 1664
582 39901 8996 2230 606
name KEY_NUMERIC_0
8974 4534 588 605 560 600
568 591 587 573 562 599
559 600 559 602 563 597
556 1660 586 1665 586 1663
590 1661 590 1661 594 1658
593 1656 587 1663 587 605
563 1655 592 1665 589 597
560 1657 587 607 561 598
559 601 559 1676 574 600
560 599 562 1655 595 598
561 1656 587 1663 599 1651
596 39902 8964 2240 595
name KEY_NUMERIC_1
8922 4595 585 579 520 640
519 641 519 640 521 641
520 640 519 640 521 640
518 1728 584 1667 524 1728
522 1727 584 1668 522 1728
523 1727 524 1726 584 581
519 640 520 1727 523 1728
522 641 520 640 520 641
519 640 520 1727 524 1726
584 580 519 641 520 1726
524 1728 522 1728 582 1668
588 39890 8974 2253 521
name KEY_NUMERIC_2
8902 4600 584 580 519 647
513 641 519 641 519 640
520 640 518 641 520 640
518 1730 522 1729 580 1668
582 1669 521 1729 583 1673
577 1666 583 1668 583 580
519 641 519 640 519 1728
582 1669 522 641 519 640
519 641 519 1727 583 1673
576 1668 522 640 519 639
520 1726 524 1732 577 1668
583 39905 8960 2253 521
name KEY_NUMERIC_3
8922 4599 584 581 519 642
519 641 519 641 520 640
519 641 519 641 520 641
520 1728 522 1727 584 1668
582 1669 522 1730 582 1669
527 1722 524 1727 524 641
519 1728 523 1728 587 1665
582 1669 582 580 520 1728
523 641 520 1733 578 580
519 641 520 641 520 641
519 1728 523 640 520 1728
582 39890 8919 2311 524
name KEY_NUMERIC_4
8902 4600 583 579 520 640
519 641 518 641 518 641
520 639 519 639 520 640
518 1727 585 1668 521 1728
521 1729 582 1676 515 1727
582 1669 520 1729 523 640
519 641 525 635 517 1729
581 580 520 640 518 642
518 641 518 1726 583 1669
521 1729 520 642 518 1727
581 1676 576 1667 582 1668
582 39890 8966 2250 582
name KEY_NUMERIC_5
8967 4539 584 580 518 641
518 641 518 641 518 641
518 641 518 649 511 641
519 1727 582 1667 583 1668
581 1677 512 1728 520 1727
582 1667 584 1669 580 580
518 640 518 1727 523 1728
581 1669 581 579 527 633
518 640 519 1728 581 1669
580 581 519 639 518 642
518 1728 582 1669 520 1726
583 39880 8893 2315 580
name KEY_NUMERIC_6
8976 4540 545 617 518 643
518 642 541 619 523 637
519 641 520 641 519 641
518 1728 527 1726 521 1729
522 1729 521 1731 545 1704
547 1704 546 1705 546 617
518 1729 522 642 519 1728
522 1729 522 641 519 1729
545 617 519 1730 521 641
519 1730 520 642 519 641
519 1728 523 641 518 1729
546 39928 8979 2251 546
name KEY_NUMERIC_7
8964 4536 549 614 552 607
547 612 549 611 551 609
580 579 582 578 582 578
581 1667 584 1664 584 1668
583 1668 582 1667 583 1666
586 1666 584 1666 590 573
581 1667 586 581 578 578
582 577 582 579 581 1666
583 580 580 1667 585 578
581 1665 585 1665 585 1666
582 1668 588 573 582 1664
587 39879 8978 2250 583
name KEY_NUMERIC_8
8969 4540 582 581 519 640
520 641 519 641 518 641
520 639 520 640 519 640
520 1729 522 1728 521 1726
524 1726 586 1668 521 1727
523 1727 523 1734 518 640
520 1728 522 641 518 641
519 1727 524 647 513 1726
524 640 530 1716 524 640
521 1726 523 1733 516 640
520 1727 524 640 519 1727
525 39943 8978 2257 517
name KEY_NUMERIC_9
8904 4602 581 580 520 640
519 641 519 641 519 641
518 641 519 641 519 639
520 1727 523 1727 583 1669
521 1727 581 1678 514 1727
523 1727 522 1726 524 641
519 1734 516 641 519 1727
583 579 522 640 519 1727
582 587 513 1727 583 580
520 1727 523 640 521 1727
528 1720 584 581 519 1728
582 39886 8919 2310 584
name BTN_0
8913 4601 589 576 520 641
520 641 520 641 520 641
521 639 520 640 521 640
521 1729 522 1729 584 1667
582 1668 584 1668 583 1668
582 1669 523 1735 577 1669
522 640 519 641 520 1727
585 1675 576 581 520 640
520 640 519 641 521 1731
520 1728 523 648 512 641
520 1728 523 1728 522 1731
521 39963 8923 2318 518
name BTN_1
8904 4599 583 581 519 641
519 641 519 641 519 640
519 641 518 647 513 641
518 1729 583 1669 521 1727
582 1674 517 1728 582 1669
538 1710 581 1672 585 1665
581 581 519 1727 583 1673
582 580 521 639 520 644
513 639 519 640 520 1727
583 581 520 640 519 1729
520 1728 583 1670 581 1668
521 39952 8915 2313 522
end raw_codes
end remote
配置/etc/lirc/lirc_options.conf文件
driver = default
device = /dev/lirc1
再执行最终的安装命令
sudo apt install ./liblirc0_0.10.1-5.2_armhf.deb ./liblircclient0_0.10.1-5.2_armhf.deb ./lirc_0.10.1-5.2_armhf.deb
重启树莓派
sudo reboot
检查lirc模块是否加载完成：
pi@raspberrypi:~ $ ls /dev/li*
/dev/lirc0 /dev/lirc1
pi@raspberrypi:~ $ irw #然后按遥控器按键
0000000000000001 00 KEY_CHANNELDOWN ./lircd.conf
0000000000000002 00 KEY_CHANNEL ./lircd.conf
0000000000000003 00 KEY_CHANNELUP ./lircd.conf
0000000000000004 00 KEY_PREVIOUS ./lircd.conf
0000000000000005 00 KEY_NEXT ./lircd.conf
0000000000000006 00 KEY_PLAYPAUSE ./lircd.conf
0000000000000008 00 KEY_VOLUMEDOWN ./lircd.conf
0000000000000007 00 KEY_VOLUMEUP ./lircd.conf
0000000000000009 00 KEY_EQUAL ./lircd.conf
C/C++安装LIRC客户端
sudo apt-get install liblircclient-dev
将lircrc 库文件上传到/home目录，然后移动到/etc/lirc/
sudo mv lircrc /etc/lirc/
Python安装pylirc库
sudo apt-get install python-pylirc
2.2、树莓派接线
2.3 C代码
#include <wiringPi.h>
#include <softPwm.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <lirc/lirc_client.h>
#include <time.h>
#define uchar unsigned char
#define LedPinRed 0
#define LedPinGreen 1
#define LedPinBlue 2
uchar color[3] = {0x00, 0x00, 0x00};
uchar Lv[3] = {0x00, 0x44, 0xff};
char *keymap[21] = {
" KEY_CHANNELDOWN ",
" KEY_CHANNEL ",
" KEY_CHANNELUP ",
" KEY_PREVIOUS ",
" KEY_NEXT ",
" KEY_PLAYPAUSE ",
" KEY_VOLUMEDOWN ",
" KEY_VOLUMEUP ",
" KEY_EQUAL ",
" KEY_NUMERIC_0 ",
" BTN_0 ",
" BTN_1 ",
" KEY_NUMERIC_1 ",
" KEY_NUMERIC_2 ",
" KEY_NUMERIC_3 ",
" KEY_NUMERIC_4 ",
" KEY_NUMERIC_5 ",
" KEY_NUMERIC_6 ",
" KEY_NUMERIC_7 ",
" KEY_NUMERIC_8 ",
" KEY_NUMERIC_9 "};
void ledInit(void)
{
softPwmCreate(LedPinRed, 0, 100);
softPwmCreate(LedPinGreen,0, 100);
softPwmCreate(LedPinBlue, 0, 100);
}
void ledColorSet()
{
softPwmWrite(LedPinRed, color[0]);
softPwmWrite(LedPinGreen, color[1]);
softPwmWrite(LedPinBlue, color[2]);
}
int key(char *code){
int i;
int num;
for (i=0;i<21;i++){
if (strstr(code, keymap[i])){
num = i;
}
}
return num + 1;
}
int RGB(int i){
switch(i){
case 1: color[0] = Lv[0]; printf("Red OFF\n"); break;
case 2: color[0] = Lv[1]; printf("Light Red\n"); break;
case 3: color[0] = Lv[2]; printf("Dark Red\n"); break;
case 4: color[1] = Lv[0]; printf("Green OFF\n"); break;
case 5: color[1] = Lv[1]; printf("Light Green\n"); break;
case 6: color[1] = Lv[2]; printf("Dark Green\n"); break;
case 7: color[2] = Lv[0]; printf("Blue OFF\n"); break;
case 8: color[2] = Lv[1]; printf("Light Blue\n"); break;
case 9: color[2] = Lv[2]; printf("Dark Blue\n"); break;
}
}
int main(void)
{
struct lirc_config *config;
int buttonTimer = millis();
char *code;
char *c;
if (wiringPiSetup() == -1){
printf("setup wiringPi failed !");
return 1;
}
if (lirc_init("lirc", 1) == -1)
exit(EXIT_FAILURE);
ledInit();
ledColorSet();
if (lirc_readconfig(NULL, &config, NULL)==0)
{
while (lirc_nextcode(&code)==0)
{
if (code==NULL) continue;{
if (millis() - buttonTimer > 400){
RGB(key(code));
ledColorSet(color);
}
}
free(code);
}
lirc_freeconfig(config);
}
lirc_deinit();
exit(EXIT_SUCCESS);
return 0;
}
Python代码
#!/usr/bin/python
import pylirc, time
import RPi.GPIO as GPIO
Rpin = 17
Gpin = 18
Bpin = 27
blocking = 0;
Lv = [100, 20, 0] #Light Level
color = [100, 100, 100]
def setColor(color):
p_R.ChangeDutyCycle(100 - color[0]) #Change duty cycle
p_G.ChangeDutyCycle(100 - color[1])
p_B.ChangeDutyCycle(100 - color[2])
def setup():
global p_R, p_G, p_B
GPIO.setmode(GPIO.BCM)
GPIO.setup(Rpin, GPIO.OUT)
GPIO.setup(Gpin, GPIO.OUT)
GPIO.setup(Bpin, GPIO.OUT)
p_R = GPIO.PWM(Rpin, 2000) #Set Frequence to 2KHz
p_G = GPIO.PWM(Gpin, 2000)
p_B = GPIO.PWM(Bpin, 2000)
p_R.start(0)
p_G.start(0)
p_B.start(0)
pylirc.init("pylirc", "./conf", blocking)
def map(x, in_min, in_max, out_min, out_max):
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
def RGB(config):
global color
if config == 'KEY_CHANNELDOWN':
color[0] = Lv[0]
print('Red OFF')
if config == 'KEY_CHANNEL':
color[0] = Lv[1]
print('Light Red')
if config == 'KEY_CHANNELUP':
color[0] = Lv[2]
print("Red")
if config == 'KEY_PREVIOUS':
color[1] = Lv[0]
print('Green OFF')
if config == 'KEY_NEXT':
color[1] = Lv[1]
print('light Green')
if config == 'KEY_PLAYPAUSE':
color[1] = Lv[2]
print('Green')
if config == 'KEY_VOLUMEDOWN':
color[2] = Lv[0]
print('Blue OFF')
if config == 'KEY_VOLUMEUP':
color[2] = Lv[1]
print('light Blue')
if config == 'KEY_EQUAL':
color[2] = Lv[2]
print('Blue')
def loop():
while True:
s = pylirc.nextcode(1)
while(s):
for (code) in s:
print('Command: ', code["config"]) #For debug: Uncommnet this line to see the return value of buttons
RGB(code["config"])
setColor(color)
if (not blocking):
s = pylirc.nextcode(1)
else:
s = []
def destroy():
p_R.stop()
p_G.stop()
p_B.stop()
GPIO.output(Rpin, GPIO.HIGH)
GPIO.output(Gpin, GPIO.HIGH)
GPIO.output(Bpin, GPIO.HIGH)
GPIO.cleanup()
pylirc.exit()
if __name__ == '__main__':
try:
setup()
loop()
except KeyboardInterrupt:
destroy()
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