Ignorer la navigation

III: Raspberry Pi

Le Raspberry Pi est un nano-ordinateur monocarte à processeur ARM conçu par des professeurs du département informatique de l'université de Cambridge dans le cadre de la fondation Raspberry Pi2.

Cet ordinateur, de la taille d'une carte de crédit, est destiné à encourager l'apprentissage de la programmation informatique ; il permet l'exécution de plusieurs variantes du système d'exploitation libre GNU/Linux, notamment Debian, et des logiciels compatibles. Mais il fonctionne également avec le système d'exploitation Microsoft Windows et celui de Google, Android Pi4.

 

Raspberry Pi-3 Pin :

 

Raspberry Pi-3 Pin Configuration:

PIN GROUP

PIN NAME

DESCRIPTION

POWER SOURCE

+5V, +3.3V, GND and Vin

+5V -power output

+3.3V -power output

GND – GROUND pin

COMMUNICATION INTERFACE

UART Interface(RXD, TXD)  [(GPIO15,GPIO14)]

UART (Universal Asynchronous Receiver Transmitter) used for interfacing sensors and other devices.

SPI Interface(MOSI, MISO, CLK,CE) x 2                         

[SPI0-(GPIO10 ,GPIO9, GPIO11 ,GPIO8)]

[SPI1--(GPIO20 ,GPIO19, GPIO21 ,GPIO7)]

SPI (Serial Peripheral Interface) used for communicating with other boards or peripherals.

TWI Interface(SDA, SCL) x 2                [(GPIO2, GPIO3)]

[(ID_SD,ID_SC)]

TWI (Two Wire Interface) Interface can be used to connect peripherals.

INPUT OUTPUT PINS

26 I/O

Although these some pins have multiple functionsthey can be considered as I/O pins.

PWM

Hardware PWM available on GPIO12, GPIO13, GPIO18, GPIO19

These 4 channels can provide PWM (Pulse Width Modulation) outputs.

*Software PWM available on all pins

EXTERNAL INTERRUPTS

All I/O

In the board all I/O pins can be used as Interrupts.

  

Raspberry Pi 3 Technical Specifications:

Microprocessor

Broadcom BCM2837 64bit Quad Core Processor

Processor Operating Voltage

3.3V

Raw Voltage input

5V, 2A power source

Maximum current through each I/O pin

16mA

Maximum total current drawn from all I/O pins

54mA

Flash Memory (Operating System)

16Gbytes SSD memory card

Internal RAM

1Gbytes DDR2

Clock Frequency

1.2GHz

GPU

Dual Core Video Core IV® Multimedia Co-Processor. Provides Open GLES 2.0, hardware-accelerated Open VG, and 1080p30 H.264 high- profile decode.

Capable of 1Gpixel/s, 1.5Gtexel/s or 24GFLOPs with texture filtering and DMA infrastructure.

Ethernet

10/100 Ethernet

Wireless Connectivity

BCM43143 (802.11 b/g/n Wireless LAN and Bluetooth 4.1)

Operating Temperature

-40ºC to +85ºC

  

Board Connectors:

Name

Description

Ethernet

Base T Ethernet Socket

USB

2.0 (Four sockets)

Audio Output

3.5mm Jack and HDMI

Video output

HDMI

Camera Connector

15-pin MIPI Camera Serial Interface (CSI-2)

Display Connector

Display Serial Interface (DSI) 15 way flat flex cable connector with two data lanes and a clock lane.

Memory Card Slot

Push/Pull Micro SDIO