Tutoriel: Développement sur Arduino - EPITA … Développement sur Arduino Augustin Cheron The...

Tutoriel:Développement

sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software

Buildingenvironement

Demo Time

Conclusion

Tutoriel: Développement sur Arduino

Augustin Cheron

[email protected]://lse.epita.fr

July 19, 2012

http://lse.epita.fr


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software


Demo Time

Conclusion

Plan

1 The Arduino Project


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software


Demo Time

Conclusion

What is Arduino ?

The Arduino Team :"Arduino is an open-source electronics prototypingplatform based on flexible, easy-to-use hardware andsoftware."

Open source hardwareOpen source softwareA huge community


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware sideAtmel AVR

USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

Plan

2 The hardware sideAtmel AVRUSB <–> RS-232Input and outputShieldConclusion


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

Atmel AVR: Atmega

The Atmega is an 8-bit AVR RISC-based microcontrollerLow power comsumption.8 or 16 Mhz clock speed (at almost 1MIPS per Mhz)ATmega family can reach up to 20Mhz.5V operating voltage.


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

USB <–> RS-232

An arduino board contain an RS232 to USB converter.Simplified the connection between your ATmega andyour computer.Old Version use well know ftdi chip.Recent one use ATmega16U2.Leonardo use only one chip.


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

IO pin

The exemple of the Atmega168:14 digital pin.5 analog input.


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

ICSP Connector

In Circuit Serial ProgrammingA common programming interface formicrocontroller.5 wire: Vpp, Vcc, Vdd, ICSPCLK, ICSPDAT.Usefull form burning a bootloader into the ATmega.


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

Reset Button

Juste a single button directly connected to theATmega’s reset pin.Reset may also be direcly controlled over the USBcontroller

Usefull for programming purpose.But a bad news for debuging one.


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

Lots of plugable hardware extension

More At : http://shieldlist.org : almost 300 shield


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

Global view of the hardware

Globale view :


sur Arduino

Augustin Cheron

The ArduinoProject


USB <–> RS-232

Input and output

Shield

Conclusion

Software


Demo Time

Conclusion

Arduino Uno schematics

Arduino is not really about hardware but software.


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

SoftwareBoot loaders

IDE

Arduino library


Demo Time

Conclusion

Plan

3 SoftwareBoot loadersIDEArduino library


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side


IDE

Arduino library


Demo Time

Conclusion

Boot loaders

Writen in the ATmega flash by the arduino team.Allow programming the devices without externalhardware.2KB memory.

Write incoming data from Serial in the flash memory(19200 baud).Also flash pin 13.And launch the software, if no software is found, itjust restart.

Source code available at :https://github.com/arduino/Arduino (hardware/arduino/bootloader/)


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side


IDE

Arduino library


Demo Time

Conclusion

IDE

Java Based easy to use minimaliste IDE.Select your serial port and baud rateSelect your boardWrite your codeVerify Sketch (Compile)Upload SketchMonitor SerialBurn a boot loader (need external hardware)


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side


IDE

Arduino library


Demo Time

Conclusion

Arduino langage

Not realy language just a C++ library.Math: sqrt sin ...Digital IO : mode, read, writeAnalog IO : mode, read, write (PWM)Avanced IO : genrate square wave, shiftBits and Bytes manipulationInterrupts handlingTime manipulation: delay

Documentation at:http://arduino.cc/it/Reference/HomePage


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side


IDE

Arduino library


Demo Time

Conclusion

Arduino language – Entry point

Listing 1: Hiden main in arduino core lib

# include <Arduino . h>

i n t main ( void ){

i n i t ( ) ;

# i f defined (USBCON)USBDevice . a t t a c h ( ) ;

# endif

setup ( ) ;

for ( ; ; ) {loop ( ) ;i f ( ser ialEventRun ) serialEventRun ( ) ;

}

return 0 ;}

Listing 2: Typical sketch main file

/ / # include Any l i b you want

void setup ( ){/ / i n i t IO , vars . . .

}

void loop ( ){/ / Do s t u f f

}


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side


IDE

Arduino library


Demo Time

Conclusion

Arduino library

The Arduino core library give access to some usefullinterfaces:

EEPROM: reading and writing.Ethernet: using the Arduino Ethernet Shield.Firmata: serial connection with computer.LiquidCrystal: controlling LCDs.SD: Reading and writing SD cards.Servo: Controlling servo motors.SPI: Communicating with devices using the SPI Bus.SoftwareSerial: serial communication on digital pins.Stepper: controlling stepper motorsWire: Two Wire Interface (TWI/I2C).

Documentation : http://arduino.cc/it/Reference/Libraries


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software

BuildingenvironementBy by IDE, hello makefile

What about debuging ?

Demo Time

Conclusion

Plan

4 Building environementBy by IDE, hello makefileWhat about debuging ?


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Demo Time

Conclusion

The avr toolchain

We will discuss about it in more details later.Build : avr-gccStrip : avr-binutils (size, objcopy, strip, ...)Upload : Avrdude


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Demo Time

Conclusion


Few emulation project : simulavrEmulation + gdb serverWrite on serial

Not a good idee if you need to be fast.


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Demo Time

Conclusion

Direct Avr debuging

Need of external hardware : Avr Dragon, Jtag,Ociloscope, ...

Avr JTAG :Realy coolBut not present on common Atmega chip used by theArduino project.

One Wire debug : Present on every Atmega Yeah !


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Demo Time

Conclusion

Debug wire

The debug wire use the reset pin.remeber the auto reset ?


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Demo Time

Conclusion

My next project

Give one wire debug in the usb <–> serial Atmega chipInclude debug in Arduino IDE.Allow the use of GDB.

Not realy sure if it’s possible.


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software


Demo TimeThe microcontroller Helloworld !

Some LSE project

And more ...

Conclusion

Plan

5 Demo TimeThe microcontroller Hello world !Some LSE projectAnd more ...


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Some LSE project

And more ...

Conclusion

Blinking LED – Arduino style

i n t LED_PIN = 1 3 ;

void setup ( ){/ / Set the led pin as an outputpinMode (LED_PIN , OUTPUT) ;

}

void loop ( ){/ / Switch on the ledd i g i t a l w r i t e ( LED_PIN , HIGHT ) ;/ / Wait 1000msdelay ( 1 0 0 0 ) ;/ / Switch o f f the ledd i g i t a l w r i t e ( LED_PIN , LOW) ;/ / Wait 1000msdelay ( 1 0 0 0 ) ;

}


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Some LSE project

And more ...

Conclusion

Who fast can we blink ? IO speed test

Basic digitalRightDirect register writingmore ?


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Some LSE project

And more ...

Conclusion

Snes bot

...


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software



Some LSE project

And more ...

Conclusion

Lots of compatible arduino project

Learn from IDE sampleMore samples on arduino websitehttp://arduino.cc/en/Tutorial/HomePage

Start with hardware (I2C, SPI, ...)http://www.arduino.cc/playground/Main/InterfacingWithHardware

Find more on google


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software


Demo Time

Conclusion

Plan

6 Conclusion


sur Arduino

Augustin Cheron

The ArduinoProject

The hardware side

Software


Demo Time

Conclusion

Question ?

[email protected]@Yoopohttps://bitbucket.org/yoopo/snesbot

Tutoriel: Développement sur Arduino - EPITA … Développement sur Arduino Augustin Cheron The...

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