Modifications

== Cavalier de configuration Galileo ==  

== Cavalier de configuration Galileo ==  

There are three jumpers on Galileo that are used to vary the configuration of the board. IOREF Jumper To allow Galileo support both 3.3V and 5V shields, the external operating voltage is controlled via a jumper. When the jumper is connected to 5V, Galileo is configured to be compatible with 5V shields and IOREF is set to 5V. When the jumper is connected 3.3V, Galileo is configured to be compatible with 3.3V shields and IOREF is set to 3.3V. The input range of the Analog pins is also controlled by the IOREF jumper and must not exceed the chosen operating voltage. However, the resolution of [http://arduino.cc/en/Reference/AnalogRead AnalogRead()] (''Arduino.cc, anglais'') remains at 5 V/1024 units for the default 10-bit resolution or, 0.0049V (4.9mV) per unit regardless of IOREF jumper setting.

Il y a 3 cavalier sur Galileo qui permettent de modifier la configuration de la carte.

 

[[Fichier:Galileo-Guide-00.jpg]]

 

'''Le cavalier IOREF''' permet à Galileo de supporter les shield 3.3V et 5V, la tension de fonctionnement des entrées/sorties est contrôlé par ce cavalier. Lorsque le cavalier est placé sur la position 5V, Galileo est configuré pour être compatible avec les shields 5V et IOREF est à 5V. Quand le cavalier est placé sur la position 3.3V, Galileo est configuré pour être compatible avec les shields 3.3V et IOREF est à 3.3V. La gamme de tension supportée par les entrées analogiques est également contrôlé par le cavalier IOREF et ne doit pas dépasser la tension sélectionnée avec la cavalier IOREF. Cependant, la résolution de la fonction [http://arduino.cc/en/Reference/AnalogRead AnalogRead()] (''Arduino.cc, anglais'') reste de 5 V/1024 unités pour la résolution par défaut de 10-bits ou 0.0049V (4.9mV) par unité peu importe la configuration du cavalier IOREF.

'''Warning''': The IOREF jumper should be used to match the board and shield operating voltages. Incorrectly setting the voltage could damage the board or the shield. '''I2C Address Jumper''' To prevent a clash between the I2C Slave address of the on board I/O expander and EEPROM with any external I2C Slave devices, jumper J2 can be used to vary the I2C address of the on-board devices. With J2 connected to pin 1 (marked with white triangle), the 7-bit I/O Expander address is 0100001 and the 7-bit EEPROM address is 1010001. Changing the jumper position changes the I/O Expander address to 0100000 and the EEPROM address to 1010000. '''VIN Jumper''' On Galileo, the VIN pin can be used to supply 5V from the regulated power supply connected at the power jack to attached shields or devices. If there is a need to supply more than 5V to a shield using VIN then the VIN jumper should be removed from Galileo to break the connection between the on-board 5V supply and the VIN connection on the board header.

'''Warning''': The IOREF jumper should be used to match the board and shield operating voltages. Incorrectly setting the voltage could damage the board or the shield. '''I2C Address Jumper''' To prevent a clash between the I2C Slave address of the on board I/O expander and EEPROM with any external I2C Slave devices, jumper J2 can be used to vary the I2C address of the on-board devices. With J2 connected to pin 1 (marked with white triangle), the 7-bit I/O Expander address is 0100001 and the 7-bit EEPROM address is 1010001. Changing the jumper position changes the I/O Expander address to 0100000 and the EEPROM address to 1010000. '''VIN Jumper''' On Galileo, the VIN pin can be used to supply 5V from the regulated power supply connected at the power jack to attached shields or devices. If there is a need to supply more than 5V to a shield using VIN then the VIN jumper should be removed from Galileo to break the connection between the on-board 5V supply and the VIN connection on the board header.

{{ambox-stop|text=If the VIN jumper is not removed and more than 5V is connected to VIN, it may damage the board or lead to unreliable operation.}}  

{{ambox-stop|text=If the VIN jumper is not removed and more than 5V is connected to VIN, it may damage the board or lead to unreliable operation.}}

 

== Reset Automatique (par logiciel) ==

== Reset Automatique (par logiciel) ==