• Raspberry PI硬件

    Raspberry Pi硬件

    1.目前树莓派的型号（根据处理器分）

    • 第一代

      • Model A

      • Model B

      • Model A+

      • Model B+

      • ZERO

    • 第二代

      • Model B

    • 第三代

      • Model B

    还有一个Raspberry Pi Compute Module

    第二代是不是叫Raspberry Pi 2B啊

    图片

     


    Raspberry Pi 1 Model A+

     

     

     
    Raspberry Pi 1 Model B v1.0 正面

     

     

     
    Raspberry Pi 1 Model B v1.0 背面

     

     

     
    Raspberry Pi 1 Model B v2.0 正面

     

     

     
    Raspberry Pi 1 Model B 国产版本 正面

     

     

     
    Raspberry Pi 1 Model B+

     

     

     
    Raspberry Pi 2 Model B

     

     

     
    Raspberry Pi 3 Model B

     

     

     
    Raspberry Pi ZERO

     

     

     
    Raspberry Pi Compute Module

     

    2.树莓派不同型号的具体差异

     Pi 1 Model APi 1 Model BPi 1 Model A+Pi 1 Model B+Pi ZEROPi 2 BPi 3 B
    CPU BCM2835 BCM2836 BCM2837
    RAM 256 MiB 256 MiB/512 MiB 256 MiB 512 MiB 1024 MiB
    GPU Broadcom VideoCore IV, OpenGL ES 2.0,OpenVG 1080p30 H.264 high-profile encode/decode, 250 MHz Broadcom VideoCore IV, OpenGL ES 2.0,OpenVG 1080p60 H.264 high-profile encode/decode, 400 MHz
    USB ports 1 USB 2.0 (provided by the BCM2835) 2 USB 2.0 (via integrated USB hub in LAN9512) 1 USB 2.0 (provided by the BCM2835) 4 USB 2.0 (via integrated USB hub in LAN9514) 1 Micro USB OTG (On The Go) 4 USB 2.0 (via integrated USB hub in LAN9514)
    Video outputs Composite video | Composite RCA, HDMI (not at the same time) HDMI | Composite video requires 4 Pole Adapter HDMI, Composite video via unsoldered 2-pin header Composite video requires 4 Pole Adapter
    Audio outputs TRS connector | 3.5 mm jack, HDMI
    Onboard Storage Secure Digital|SD / MMC / SDIO card slot Micro Secure Digital / MicroSD slot
    Onboard Network None 10/100 wired Ethernet RJ45 None 10/100 wired Ethernet RJ45 None 10/100 wired Ethernet RJ45 10/100 wired Ethernet RJ45, integrated 802.11n Wi-Fi & Bluetooth 4.1
    Power ratings 300mA 700mA 600mA up to 1.2A @ 5V ~650 mA 160mA rating ~650 mA 800mA
    Weight 31g 40g 23g 40g 9g 45g 40g

    祖传的100M有线网卡, 简直残念

    3.PCB引脚介绍

     

     
    Raspberry Pi 1 Model B v2.0 正面

     

    • P1: 26-pin (2x13) 2.54 mm header expansion, providing: see Low-level peripherals

      • 8 GPIOs at 3.3 V

      • 2-pin UART serial console, 3.3 V TTL (debug); or 2 GPIOs at 3.3 V

      • I²C interface (3.3 V); or 2 GPIOs at 3.3 V

      • SPI interface (3.3 V); or 5 GPIOs at 3.3 V

      • 3.3 V, 5 V and GND supply pins

      • ARM JTAG (if pins are reconfigured in software - on Revision1.0 boards one signal would also need to be taken from S5)

      • I²S interface (if pins are reconfigured in software, hardware hack may be required5)

    • P2: 8-pin 2.54 mm header expansion (header not fitted on Revision 2.0 boards), providing GPU JTAG (ARM11 pinout, pin 7 is nofit for locating)

    • P3: 7-pin 2.54 mm header expansion (header not fitted), providing LAN9512 JTAG (pin 6 is nofit for locating)

    • P4: 10/100 Mbit/s RJ45 Ethernet jack (Model B)

    • P5: 8-pin (2x4) 2.54 mm header expansion (header not fitted), on the bottom of the board, providing: see Low-level peripherals (Model B Revision 2.0 and Model A boards only)

      • 4 GPIOs at 3.3 V

      • 3.3 V, 5 V and GND supply pins

      • Second I²C interface (3.3 V) (if pins are reconfigured in software)

      • I²S interface (if pins are reconfigured in software)

      • Handshake signals for the UART on the P1 header (if pins are reconfigured in software)

    • P6: 2-pin 2.54 mm header expansion (header not fitted), providing an option to connect a hardware-reset button (Revision 2.0 boards only)

    • TP1 and TP2: Test Points giving access to +5 V and GND respectively

    • 5 Status LEDs:

      • D5(Green) - SDCard Access (via GPIO16) - labelled as "OK" on Model B Rev1.0 boards and "ACT" on Model B Rev2.0 and Model A boards

      • D6(Red) - 3.3 V Power - labelled as "PWR" on all boards

      • D7(Green) - Full Duplex (LAN) (Model B) - labelled as "FDX" on all boards

      • D8(Green) - Link/Activity (LAN) (Model B) - labelled as "LNK" on all boards

      • D9(Yellow) - 10/100 Mbit/s (LAN) (Model B) - labelled (incorrectly) as "10M" on Model B Rev1.0 boards and "100" on Model B Rev2.0 and Model A boards

    1.不过对于后面的板子, 比如1B+, 2B, 3B都是将网络指示灯集成到了RJ45插座上面了
    2.电源指示灯闪烁说明你的电源有问题
    3.绿色的指示灯类似于普通电脑的硬盘指示灯,表明正在读写文件
    4.1B的板子有一些孔没有焊接上排针, 如果焊上排针, 将可以扩展一些额外的GPIO以及外设

    Pi 1Model A and B (Original)

    P1 Header

     

     
    P1 Header

     

    可以通过观察PCB丝印确定引脚顺序

     

     
    P1 Header

     

    P2 header

     

     
    P2 header

     

    GPU的JTAG接口

    • Pin 1 - 3.3V (same as P1-01, 50 mA max current draw across both of them)

    • Pin 7 - GND

    • Pin 8 - GND

    P3 header

     

     
    P3 header

     

    LAN9512 JTAG

    • Pin 7 - GND

    P5 header

     

     
    P5 header

     

    wiki上说从下往上看

    Pin NumberPin Name Rev2Hardware NotesAlt 0 FunctionOther Alternative Functions
    P5-01 5V0 Supply through input poly fuse    
    P5-02 3.3V 50 mA max (combined with P1)    
    P5-03 GPIO28   I2C0_SDA ALT2 = PCM_CLK
    P5-04 GPIO29   I2C0_SCL ALT2 = PCM_FS
    P5-05 GPIO30     ALT2 = PCM_DIN ALT3 = UART0_CTS ALT5 = UART1_CTS
    P5-06 GPIO31     ALT2 = PCM_DOUT ALT3 = UART0_RTS ALT5 = UART1_RTS
    P5-07 GND      
    P5-08 GND      

    P6 header

     

     
    P6 header

     

    Pin Number PinName Rev2Hardware Notes
    P6-01 RUN Short to ground to reset the BCM2835
    P6-02 GND  

    短接可以重启树莓派, 1B v2.0才开始添加此设计

    Model A+, B+ and B2

     



    Raspberry Pi 1 Model B+

     

     

     
    P1 Header

     

    整理自: http://elinux.org/RPi_Low-level_peripherals
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  • 原文地址：https://www.cnblogs.com/rootming/p/5759478.html
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