pcduino presentation at sparkfun

Overview of pcDuino

www.pcduino.comlearn.linksprite.com

Agenda pcDuino: a platform open source software meets open

source hardware Programming under Ubuntu (linux)

Arduino style programming ( C ) for pcDuino Python programming for pcDuino Java programming for pcDuino Go Cloud 9 IDE

Scratch for pcDuino Project Showcase Programming under Android ICS

Command line programming QT GUI

pcDuino: where open software meets open hardware

pcDuino = mini PC + Arduino pcDuino is a kind of super Arduino with the brain

power of a mini PC. Existing Arduino shield can work on pcDuino. pcDuino can run Ubuntu. The desktop outputs

from HDMI. User can remotely access its desktop via VNC (Network or OTG-USB).

pcDuino has built-in Arduino style IDE environment. It also supports programming in Python, Cloud 9 IDE, Java, Go-lang, Scratch, etc.

pcDuino can run full Android ICS, and support Arduino style hardware programming under Android.

pcDuino is a server, a WiFi router, a printer server, a IP-PBX, and more.

pcDuino is a platform where open software meets open hardware.

pcDuino FamilypcDuino Lite pcDuino Lite WiFi pcDuino v1 pcDuino v2 pcDuino v3

CPU Allwinner A101GHz ARM Cortex A8

Allwinner A101GHz ARM Cortex A8

 Allwinner A101GHz ARM Cortex A8

 Allwinner A101GHz ARM Cortex A8

GPU OpenGL ES2.0OpenVG 1.1 Mali 400 core

OpenGL ES2.0OpenVG 1.1 Mali 400 core

OpenGL ES2.0OpenVG 1.1 Mali 400 core

OpenGL ES2.0OpenVG 1.1 Mali 400 core

DRAM  512MB 256MB  1GB   1GB

Storage NO FlashmicroSD card (TF) slot for up to 32GB

2GB FlashmicroSD card (TF) slot for up to 32GB

 2GB Flash (4GB after 2/1/2014)microSD card (TF) slot for up to 32GB

 2GB Flash (4GB after 2/1/2014)microSD card (TF) slot for up to 32GB

Video  HDMI HDMI  HDMI  HDMI

OS Support• Lbuntu 12.04•Android

•Lbuntu 12.04•Doesn’t support Android

•Lbuntu 12.04•Android

•Lbuntu 12.04•Android

ExtensionInterface  2.54mm headers Arduino (TM) Headers  2.54mm headers  Arduino (TM) Headers

NetworkInterface•10/100Mbps RJ45•USB WiFi extension (not included)

WiFi, No Ethernet•10/100Mbps RJ45•USB WiFi extension (not included)

•10/100Mbps RJ45•WiFi

Power  5V, 2000mA 5V, 2000mA  5V, 2000mA  5V, 2000mA

pcDuino hardware interfaces

Frizting Files

http://www.github.com/pcduino/frizting

pcDuino boot modes Default to boot from SD If there is no bootable image in SD, it will try to boot

from NAND. For Ubuntu OS, the system and data in NAND can be

copied to SD seamlessly.

Programming under Ubuntu (linux)

VNC to pcDuino through its USB-OTG

Two flavors Command line IDE

Arduino style programming ( C )

Arduino IDE

Arduino IDE

Arduino IDE

Arduino IDE

Arduino IDE

ArduBlock

C Command lineSetup (one time) If not already done, set up git. Do this using the command: ubuntu@ubuntu:~$ sudo apt-get install git  Make sure you’re in your home folder by typing ubuntu@ubuntu:~$ cdubuntu@ubuntu:~$ pwd/home/Ubuntu Now download the distribution from github by typingubuntu@ubuntu:~$ git clone https://github.com/pcduino/c_enviroment

C Command line

C Command lineChange into the c_enviroment folder: ubuntu@ubuntu:~$ cd c_enviromentubuntu@ubuntu:~/c_enviroment$ lsMakefile hardware libraries output sample Now run make to make the libraries and the examples with the following command: ubuntu@ubuntu:~/c_enviroment$ make

Make[1]: Leaving directory `/home/ubuntu/c_enviroment/sample'The resulting binary files are found in the output/test folderubuntu@ubuntu:~/c_enviroment$ cd output/testubuntu@ubuntu:~/c_enviroment/output/test$ lltotal 660drwxrwxr-x 2 ubuntu ubuntu 4096 Apr 27 06:59 ./drwxrwxr-x 3 ubuntu ubuntu 4096 Apr 27 06:49 ../-rwxrwxr-x 1 ubuntu ubuntu 13868 Apr 27 06:58 adc_test*-rwxrwxr-x 1 ubuntu ubuntu 28284 Apr 27 06:58 adxl345_test*-rwxrwxr-x 1 ubuntu ubuntu 14209 Apr 27 06:58 interrupt_test*-rwxrwxr-x 1 ubuntu ubuntu 13726 Apr 27 06:58 io_test*-rwxrwxr-x 1 ubuntu ubuntu 13712 Apr 27 06:59 linker_button_test*-rwxrwxr-x 1 ubuntu ubuntu 13907 Apr 27 06:59 linker_buzzer_test*-rwxrwxr-x 1 ubuntu ubuntu 13689 Apr 27 06:59 linker_hall_sensor_test*-rwxrwxr-x 1 ubuntu ubuntu 13760 Apr 27 06:59 linker_joystick_test*-rwxrwxr-x 1 ubuntu ubuntu 13769 Apr 27 06:59 linker_led_bar_test*-rwxrwxr-x 1 ubuntu ubuntu 13690 Apr 27 06:59 linker_led_test*-rwxrwxr-x 1 ubuntu ubuntu 14290 Apr 27 06:59 linker_light_sensor_test*……

C Command lineTo view the contents of a sample sketch, (this example we’ll look at the contents of linker_led_test.c) type: ubuntu@ubuntu:~/c_enviroment/sample$ cat

linker_led_test.c/** LED test program*/#include <core.h>int led_pin = 1; void setup(){if(argc != 2){goto _help;}led_pin = atoi(argv[1]);if((led_pin < 0) || (led_pin > 13)){goto _help;}pinMode(led_pin, OUTPUT);return; _help:printf("Usage %s LED_PIN_NUM(0-13)n", argv[0]);exit(-1);}

void loop(){digitalWrite(led_pin, HIGH); // set the LED ondelay(1000); // wait for a seconddigitalWrite(led_pin, LOW); // set the LED offdelay(1000); // wait for a second} 

Creating Your Own Sketchubuntu@ubuntu:~/c_enviroment/sample$ nano button_led.c An empty nano screen should appear.Copy and paste the following code into it. (Remember to paste in nano at the cursor,

just right click the mouse button). #include <core.h> // Required first line to run on pcDuinoint ledPin = 8;int buttonPin = 7;// variables will change:int buttonState = 0; // variable for reading the pushbutton status void setup() {// initialize the LED pin as an output:pinMode(ledPin, OUTPUT);// initialize the pushbutton pin as an input:pinMode(buttonPin, INPUT);} 

Creating Your Own Sketchvoid loop(){// read the state of the pushbutton value:buttonState = digitalRead(buttonPin); // check if the pushbutton is pressed.// if it is, the buttonState is HIGH:if (buttonState == HIGH) {// turn LED on:digitalWrite(ledPin, HIGH);}else {// turn LED off:digitalWrite(ledPin, LOW);}}

Creating Your Own SketchModify the Makefile and Compileubuntu@ubuntu:~/c_enviroment/sample$ nano Makefile You will see a section that lists all the OBJS something like: OBJS = io_test adc_test pwm_test spi_test adxl345_test serial_test liquidcrystal_i2c liquidcrystal_spi

interrupt_test tone_testOBJS += linker_led_test linker_potentiometer_test linker_tilt_test linker_light_sensor_test

linker_button_testOBJS += linker_touch_sensor_test linker_magnetic_sensor_test linker_temperature_sensor_test

linker_joystick_testOBJS += linker_rtc_test linker_sound_sensor_test linker_buzzer_test linker_hall_sensor_test

linker_led_bar_test linker_relay_testOBJS += pn532_readAllMemoryBlocks pn532readMifareMemory pn532readMifareTargetID

pn532writeMifareMemory 

Creating Your Own SketchWe’re going to add a line to the end of this with the name of the scketch we just created: OBJS += button_led Save the file and exit nano using <CTRL>X with a y and <enter>. We now run make by typing: ubuntu@ubuntu:~/c_enviroment/sample$ make You should see a whole bunch of text with the end being: button_led.c -o ../output/test/button_led ../libarduino.a If all went well, you can go to the output/test folder and find your executable you have created: ubuntu@ubuntu:~/c_enviroment/sample$ cd ../output/test/ubuntu@ubuntu:~/c_enviroment/output/test$ lltotal 676drwxrwxr-x 2 ubuntu ubuntu 4096 Apr 27 07:51 ./drwxrwxr-x 3 ubuntu ubuntu 4096 Apr 27 06:49 ../-rwxrwxr-x 1 ubuntu ubuntu 13868 Apr 27 07:51 adc_test*-rwxrwxr-x 1 ubuntu ubuntu 28284 Apr 27 07:51 adxl345_test*-rwxrwxr-x 1 ubuntu ubuntu 13668 Apr 27 07:51 button_led*…..(not showing rest of listing here)  

Creating Your Own SketchRun Your Sketch To run it, once you have wired up a switch and led to the right pins, type: ubuntu@ubuntu:~/c_enviroment/output/test$ ./button_led To stop the program, <Ctrl>C A Quick Re-Cap 

Add #include <core.h> to the top of your sketch.Create your sketch in the samples folder (if your familiar with linux,

makefiles, and compiling code, you could set up your own)Add the filename to the Makefile in the samples folder in the OBJS section

without the .cRun makeRun the executable from the output/test folder.You can introduce command line arguments into your sketch to make it

more transportable. 

pcDuino Hardware Experiments

Potentiometer

LED Dimmer (PWM)

7-seg LED

8x8 LED Matrix

Analog Temperature Sensor

4 Digits 7-segment LEDs

16x02 Character LCD

Digital Humidity and Temperature Sensor

LED controlled by LDR

Serial Port of pcDuino

Extends to 4 UARTS

http://jbvsblog.blogspot.com/2013/09/pcduino-extends-to-4-uarts.html

Ultrasonic Sensor

Stepper

RF Servo

Relay

NFC Shield

Cottonwood:UHF ultra-distance RFID Reader

GPS Shield

Cellular Shield

Powerline Communication

Python

ubuntu@ubuntu:~/python-pcduino/Samples/blink_led$ more blink_led.py #!/usr/bin/env python# blink_led.py# gpio test code for pcduino ( http://www.pcduino.com )#import gpioimport timeled_pin = "gpio2"def delay(ms): time.sleep(1.0*ms/1000)def setup(): gpio.pinMode(led_pin, gpio.OUTPUT)def loop(): while(1): gpio.digitalWrite(led_pin, gpio.HIGH) delay(200)

pcDuino as Networked Device to feed data to Xively (Internet of Things)

Smart Garage powered by pcDuino

OpenCV

OpenCVdef process(infile): image = cv.LoadImage(infile); if image: faces = detect_object(image) im = Image.open(infile) path = os.path.abspath(infile) save_path = os.path.splitext(path)[0]+"_face" try: os.mkdir(save_path) except: pass if faces: draw = ImageDraw.Draw(im) count = 0 for f in faces: count += 1 draw.rectangle(f, outline=(255, 0, 0)) a = im.crop(f) file_name = os.path.join(save_path,str(count)+".jpg") # print file_name a.save(file_name) drow_save_path = os.path.join(save_path,"out.jpg") im.save(drow_save_path, "JPEG", quality=80) else: print "Error: cannot detect faces on %s" % infile if __name__ == "__main__":process("./opencv_in.jpg")

OpenCV#!/usr/bin/env python#coding=utf-8import osfrom PIL import Image, ImageDrawimport cv def detect_object(image): grayscale = cv.CreateImage((image.width, image.height), 8, 1) cv.CvtColor(image, grayscale, cv.CV_BGR2GRAY) cascade = cv.Load("/usr/share/opencv/haarcascades/haarcascade_frontalface_alt_tree.xml") rect = cv.HaarDetectObjects(grayscale, cascade, cv.CreateMemStorage(), 1.1, 2, cv.CV_HAAR_DO_CANNY_PRUNING, (20,20)) result = [] for r in rect: result.append((r[0][0], r[0][1], r[0][0]+r[0][2], r[0][1]+r[0][3])) return result  

Go Langpackage main import ("fmt""./gpio""time") func main() { g, err := gpio.NewGPIOLine(7,gpio.OUT)if err != nil {fmt.Printf("Error setting up GPIO %v: %v", 18, err)return} blink(g, 100)g.Close()} func blink(g *gpio.GPIOLine, n uint) {fmt.Printf("blinking %v time(s)\n", n)for i := uint(0); i &lt; n; i++ {g.SetState(true)time.Sleep(time.Duration(1000) * time.Millisecond)g.SetState(false)time.Sleep(time.Duration(1000) * time.Millisecond)}}

Cloud 9 IDE Cloud9 IDE is an online development

environment for Javascript and Node.js applications as well as HTML, CSS, PHP, Java, Ruby and 23 other languages.

You're programming for the web, on the web. Teams can collaborate on projects and run them within the browser. When you're finished, deploy it—and you're done!

Cloud 9 IDE

QT on pcDuino

QT on pcDuino

Scratch for pcDuino

Scratch

$sudo apt-get install pcduino-scratch

Run SNAP on pcDuino

Blink LED (Scratch for pcDuino)

Press Button to Turn on LED (Scratch for pcDuino)

Touch the Finish Line (Scratch for pcDuino)

Play Pong with Scratch for pcDuino

pcDuino as banaba piano using Scratch for pcDuino

Showcase

Home Automation： IP controllable LED

Many users are asking if the hardware part can be programmed together with the Ubuntu linux?

Sure. This is the beauty of pcDuino. The Arduino compatible hardware is a native part of the OS.

pcDuino includes Ethernet port, USB Wifi dongle, so there is no need for Ethernet shield, Ethernet shield , USB host shield, MP3 shields and so on.

Now, we are going to implement a TCP/IP socket server on pcDuino to listen to the data coming from client.

When it receives character ’O', it will turn on the LED, and when it receives ‘F”, it will turn on the LED. No actions if receive something else.

Home Automation： IP controllable LED

#include “sys/socket.h”#include “netinet/in.h”#include “arpa/inet.h”#include “sys/types.h” int led_pin = 2; int listenfd = 0, connfd = 0;int n;struct sockaddr_in serv_addr;  char sendBuff[1025];time_t ticks;  

 void loop(){ n = read(connfd, sendBuff, strlen(sendBuff) );  if(n>0){if(sendBuff[0]=='O') digitalWrite(led_pin, HIGH); // set the LED onif(sendBuff[0]=='F') digitalWrite(led_pin,LOW); // set the LED off}}

void setup(){ led_pin = 2; pinMode(led_pin, OUTPUT); listenfd = socket(AF_INET, SOCK_STREAM, 0);memset(serv_addr, '0', sizeof(serv_addr));memset(sendBuff, '0', sizeof(sendBuff));  serv_addr.sin_family = AF_INET;serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);serv_addr.sin_port = htons(5000);  bind(listenfd, (struct sockaddr*) serv_addr, sizeof(serv_addr));  listen(listenfd, 10);  connfd = accept(listenfd, (struct sockaddr*)NULL, NULL);  }

Home Automation by Z-wave

SDR on pcDuino

pcDuino as 3D printer control console

Programming under Android ICS

Two flavors to program under Android There are two flavors to program under

Android: Command line QT5 GUI

Command line

QT5 GUI

We can copy the apk though pcDuino OTG or SD card to pcDunio and install it there.

Connect with pcDuino

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