Introduction to pcDuino
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The document discusses pcDuino, an open source hardware and software platform. It can be programmed under Ubuntu Linux using C, Python, Java, and other languages. It also runs Android and supports Arduino-style programming under Android. The pcDuino combines the processing power of a mini PC with Arduino compatibility. It has multiple models that support functions like WiFi, Ethernet, HDMI output, and working with shields. Programming examples and guides are provided for C, Python, OpenCV, Cloud 9 IDE, QT, Scratch, Go and home automation using TCP/IP.
![C Command line
Change into the c_enviroment folder:
ubuntu@ubuntu:~$ cd c_enviroment
ubuntu@ubuntu:~/c_enviroment$ ls
Makefile 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 folder
ubuntu@ubuntu:~/c_enviroment$ cd output/test
ubuntu@ubuntu:~/c_enviroment/output/test$ ll
total 660
drwxrwxr-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*
““](https://image.slidesharecdn.com/pcduinosharc-140210105006-phpapp02/85/Introduction-to-pcDuino-12-320.jpg)
![C Command line
To 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
on
delay(1000); // wait for a second
digitalWrite(led_pin, LOW); // set the LED
off
delay(1000); // wait for a second
}](https://image.slidesharecdn.com/pcduinosharc-140210105006-phpapp02/85/Introduction-to-pcDuino-13-320.jpg)
![OpenCV
def 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")](https://image.slidesharecdn.com/pcduinosharc-140210105006-phpapp02/85/Introduction-to-pcDuino-48-320.jpg)
![OpenCV
#!/usr/bin/env python
#coding=utf-8
import os
from PIL import Image, ImageDraw
import 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](https://image.slidesharecdn.com/pcduinosharc-140210105006-phpapp02/85/Introduction-to-pcDuino-49-320.jpg)
![Home Automation：IP controllable LED
#include ‚sys/socket.h‛
#include ‚netinet/in.h‛
#include ‚arpa/inet.h‛
#include
‚sys/types.h‛
void loop()
{
n = read(connfd, sendBuff, strlen(sendBuff) );
int led_pin = 2;
int listenfd = 0, connfd = 0;
int n;
struct sockaddr_in serv_addr;
char sendBuff[1025];
time_t ticks;
if(n>0)
{
if(sendBuff[0]=='O') digitalWrite(led_pin,
HIGH); // set the LED on
if(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);
}](https://image.slidesharecdn.com/pcduinosharc-140210105006-phpapp02/85/Introduction-to-pcDuino-57-320.jpg)
Introduction to pcDuino
- 1. pcDuino A New Way To Innovate www.pcduino.com learn.linksprite.com
- 2. Agenda pcDuino: a platform open source software meets open source hardware Programming under Ubuntu (linux) Programming under Android ICS Arduino style programming ( C ) for pcDuino Python programming for pcDuino Java programming for pcDuino Cloud 9 IDE Command line programming QT GUI Friends help Friends Program Friends help Friends - PCB Friends help Friends - Assembly Friends help Friends -Distribution
- 3. 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.
- 4. pcDuino Family pcDuino Lite pcDuino Lite WiFi pcDuino v1 pcDuino v2 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 Storage 2GB Flash (4GB after 2GB Flash (4GB after NO FlashmicroSD 2GB FlashmicroSD 2/1/2014)microSD 2/1/2014) card (TF) slot for up to card (TF) slot for up to card (TF) slot for up to microSD card (TF) slot 32GB 32GB 32GB 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 1GB pcDuino v3
- 6. 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.
- 7. Programming under Ubuntu (linux)
- 8. VNC to pcDuino through its USBOTG
- 9. Arduino style programming ( C ) Two flavors Command line IDE
- 10. C Command line Setup (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:~$ cd ubuntu@ubuntu:~$ pwd /home/Ubuntu Now download the distribution from github by typing ubuntu@ubuntu:~$ git clone https://github.com/pcduino/c_enviroment
- 11. C Command line
- 12. C Command line Change into the c_enviroment folder: ubuntu@ubuntu:~$ cd c_enviroment ubuntu@ubuntu:~/c_enviroment$ ls Makefile 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 folder ubuntu@ubuntu:~/c_enviroment$ cd output/test ubuntu@ubuntu:~/c_enviroment/output/test$ ll total 660 drwxrwxr-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* ““
- 13. C Command line To 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 on delay(1000); // wait for a second digitalWrite(led_pin, LOW); // set the LED off delay(1000); // wait for a second }
- 14. Creating Your Own Sketch ubuntu@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 pcDuino int 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); }
- 15. Creating Your Own Sketch void 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); } }
- 16. Creating Your Own Sketch Modify the Makefile and Compile ubuntu@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_test OBJS += linker_led_test linker_potentiometer_test linker_tilt_test linker_light_sensor_test linker_button_test OBJS += linker_touch_sensor_test linker_magnetic_sensor_test linker_temperature_sensor_test linker_joystick_test OBJS += linker_rtc_test linker_sound_sensor_test linker_buzzer_test linker_hall_sensor_test linker_led_bar_test linker_relay_test OBJS += pn532_readAllMemoryBlocks pn532readMifareMemory pn532readMifareTargetID pn532writeMifareMemory
- 17. Creating Your Own Sketch We’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$ ll total 676 drwxrwxr-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)
- 18. Creating Your Own Sketch Run 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 .c Run make Run the executable from the output/test folder. You can introduce command line arguments into your sketch to make it more transportable.
- 19. Arduino IDE
- 20. Arduino IDE
- 21. Arduino IDE
- 22. Arduino IDE
- 23. Arduino IDE
- 24. ArduBlock
- 26. Potentiometer
- 27. LED Dimmer (PWM)
- 28. 7-seg LED
- 29. 8x8 LED Matrix
- 31. 4 Digits 7-segment LEDs
- 33. Digital Humidity and Temperature Sensor
- 34. LED controlled by LDR
- 35. Serial Port of pcDuino
- 36. Extends to 4 UARTS http://jbvsblog.blogspot.com/2013/09/pcduino-extends-to-4uarts.html
- 38. Stepper
- 39. RF Servo
- 40. Relay
- 41. NFC Shield
- 42. Cottonwood:UHF ultra-distance RFID Reader
- 43. GPS Shield
- 44. Cellular Shield
- 46. 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 gpio import time led_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)
- 47. OpenCV
- 48. OpenCV def 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")
- 49. OpenCV #!/usr/bin/env python #coding=utf-8 import os from PIL import Image, ImageDraw import 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
- 50. 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!
- 51. Cloud 9 IDE
- 52. QT on pcDuino
- 53. QT on pcDuino
- 54. Scratch $sudo apt-get install pcduino-scratch
- 55. Go Lang package 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 < n; i++ { g.SetState(true) time.Sleep(time.Duration(1000) * time.Millisecond) g.SetState(false) time.Sleep(time.Duration(1000) * time.Millisecond) } }
- 56. 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 turn on it will receive receives character ’O', it will the LED, and when it receives ‘F‛, turn on the LED. No actions if something else.
- 57. Home Automation：IP controllable LED #include ‚sys/socket.h‛ #include ‚netinet/in.h‛ #include ‚arpa/inet.h‛ #include ‚sys/types.h‛ void loop() { n = read(connfd, sendBuff, strlen(sendBuff) ); int led_pin = 2; int listenfd = 0, connfd = 0; int n; struct sockaddr_in serv_addr; char sendBuff[1025]; time_t ticks; if(n>0) { if(sendBuff[0]=='O') digitalWrite(led_pin, HIGH); // set the LED on if(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); }
- 58. Home Automation by Z-wave
- 59. pcDuino as 3D printer control console
- 60. pcDuino as banaba piano
- 61. Programming under Android ICS
- 62. Two flavors to program under Android There are two flavors to program under Android: Command line QT5 GUI
- 63. Command line
- 64. QT5 GUI We can copy the apk though pcDuino OTG or SD card to pcDunio and install it there.
- 66. Friends help Friends Friends help Friends - PCB Friends help Friends - Assembly Friends help Friends -Distribution Leverage LinkSprite Manufacturing Facility in Shenzhen, China, and distribution channel worldwide.