Premiers Pas avec Raspberry Pi et Arduino



Interfacer le Raspberry Pi et une carte Arduino peut être utile pour de nombreux projets (M2M, Robotique, ...).


 * Via USB : http://blog.oscarliang.net/connect-raspberry-pi-and-arduino-usb-cable/
 * Via GPIO : http://blog.oscarliang.net/raspberry-pi-and-arduino-connected-serial-gpio/

Read http://playground.arduino.cc/Interfacing/Python

Install pySerial sudo apt-get install python-serial

Check the Arduino tty port ls /dev/tty*

Download the following sketch on the Arduino board (using the Arduino IDE) void setup { Serial.begin(9600); }

void loop { int sensorValue = analogRead(A0); Serial.println(sensorValue); delay(1000); }

Run the following python script import serial ser = serial.Serial('/dev/ttyACM0', 9600) while True : print ser.readline

More test

Download the following sketch on the Arduino board (using the Arduino IDE) // from http://blog.oscarliang.net/connect-raspberry-pi-and-arduino-usb-cable/ const int ledPin = 13; void setup{ pinMode(ledPin, OUTPUT); Serial.begin(9600); } void loop{ if (Serial.available) { light(Serial.read - '0'); } delay(500); } void light(int n){ for (int i = 0; i < n; i++) { digitalWrite(ledPin, HIGH); delay(100); digitalWrite(ledPin, LOW); delay(100); } }

Run the following python script import serial ser = serial.Serial('/dev/ttyACM0', 9600) ser.write('10')

More with Firmata : https://github.com/lupeke/python-firmata/

Download the firmata sketch on the Arduino board (using the Arduino IDE > Examples > Firmata > StandardFirmata)

Run the following python script from firmata import *

a = Arduino('/dev/ttyACM0') a.pin_mode(13, firmata.OUTPUT) a.delay(2)

while True: a.digital_write(13, firmata.HIGH) a.delay(2) a.digital_write(13, firmata.LOW) a.delay(2)