Difference between revisions of "Raspberry Pi 4 Model B"

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(Created page with "Raspberry Pi 4 Model B 400px")
 
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Raspberry Pi 4 Model B
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<div class="tabber">
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<div class="tabbertab" title="资料">
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{{Product
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|images=<div class="tabber">
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<div class="tabbertab" title="Raspberry Pi 4 Model B">[[File:Raspberry_Pi_4_Model_B_1.jpg|400px|Raspberry Pi 4 Model B]]</div>
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</div>
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|categories=
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{{Category|Raspberry Pi}}
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|brand=Raspberry Pi
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|features=
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* Rasbperry Pi 4 Model B
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|interfaces=
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{{Category|DSI}}
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{{Category|CSI}}
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{{Category|HDMI}}
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{{Category|USB}}
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{{Category|I2C}}
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{{Category|I2S}}
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{{Category|SPI}}
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{{Category|UART}}
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{{Category|RPi}}
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{{Category|RJ45}}
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}}
  
[[File:Raspberry_Pi_4_Model_B_1.jpg|400px]]
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==Instruction==
 +
Raspberry Pi 4 Model B, the completely upgraded, re-engineered model of the Pi family. It has more powerful processor, faster networking, supports dual 4K output, and provides different choice of RAM.
 +
 
 +
===Features===
 +
*BCM2711B0 (ARM Cortex-A72)
 +
**64-bit 1.5GHz quad-core
 +
*Choice of RAM
 +
**PI4B-1GB: 1GB
 +
**PI4B-2GB: 2GB
 +
**PI4B-4GB: 4GB
 +
*Gigabit Ethernet
 +
*802.11ac 2.4GHz/5GHz dual-band NIC
 +
*Bluetooth 5.0, BLE
 +
*USB 3.0 x 2, USB 2.0 x 2
 +
*micro HDMI x 2 (supports 4Kp60)
 +
*PoE header (supports PoE HAT)
 +
*MicroSD slot
 +
*3.5 mm audio jack
 +
*40PIN GPIO header
 +
*CSI camera interface
 +
*DSI display interface
 +
*USB Type C power supply (5V/3A or above)
 +
 
 +
==Resource==
 +
*[https://www.raspberrypi.org/documentation/hardware/raspberrypi/README.md Raspberry Pi Hardware Resouces (official)]
 +
 
 +
== 系列教程 ==
 +
{{Raspberry Pi Study}}
 +
 
 +
== FAQ ==
 +
<div class="tabbertab" title="FAQ">
 +
{{FAQ|HDMI 屏幕无法显示怎么办?|
 +
1.  树莓派有两个 HDMI 口,但在默认情况下,只工作于靠近电源的 HDMI 口。
 +
 
 +
2.  编辑 config.txt,加入:
 +
<pre>
 +
hdmi_safe=1
 +
overscan_left=-30
 +
overscan_right=-30
 +
overscan_top=-30
 +
overscan_bottom=-30
 +
hdmi_group=2
 +
hdmi_mode=4
 +
hdmi_drive=2
 +
config_hdmi_boost=4
 +
</pre>
 +
再重启动树莓派。
 +
 
 +
3.  如果上面这段无法解决您的问题,请重新注释掉,然后加入下面这段:
 +
<pre>
 +
max_usb_current=1
 +
hdmi_force_hotplug=1
 +
config_hdmi_boost=10
 +
hdmi_group=2
 +
hdmi_mode=87
 +
hdmi_cvt 1920 1080 60 6 0 0 0
 +
</pre>
 +
注意,1920 1080 需要改成显示器对应的分辨率。
 +
}}
 +
{{FAQ|树莓派4双屏显示如何指定触摸到主屏上?|
 +
1.在树莓派终端输入xrandr,查看主屏所在的HDMI-ID(大部分是HDMI-1);
 +
 
 +
[[File:Pi4-指定触摸-1.png|600px]]
 +
 
 +
2.在树莓派终端输入xinput,查看主屏所在的触摸ID(有2个触摸ID,如果不知道哪个是主屏,可以都试一下);
 +
 
 +
[[File:Pi4-指定触摸-2.png|600px]]
 +
 
 +
3.运行指令:xinput map-to-output &lt;touch ID&gt; &lt;HDMI-ID&gt;
 +
 
 +
(把ID值对应后运行指令即可指定触摸到主屏上,如:xinput map-to-output 7 HDMI-1 )
 +
 
 +
[[File:Pi4-指定触摸-3.png]]
 +
 
 +
4.由于每次开机都需要重新输入指令,可以将此指令添加到开机自启中去:
 +
 
 +
sudo nano /etc/xdg/lxsession/LXDE-pi/autostart
 +
 
 +
添加: xinput map-to-output 7 HDMI-1 (记得改成自己对应ID),然后重启即可。
 +
 
 +
[[File:Pi4-开机自启-4.png|600px]]
 +
 
 +
}}
 +
{{FAQ
 +
|为什么目前建议使用 Raspberry Pi OS 32-bit 版本,而非 64-bit 版本?
 +
|2=目前树莓派官方推荐的系统是 Raspberry Pi OS 32-bit,而 64-bit 版本仍在测试阶段。 ([https://downloads.raspberrypi.org/raspios_arm64/images/ 点击下载 Raspberry Pi OS 64-bit])。
 +
 
 +
64-bit 版本存在一些已知问题,参见 [https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=275372 官方论坛置顶帖]
 +
}}
 +
</div>
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<!--{{Join_us}}-->
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</div>
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<div class="tabbertab" title="售后"><br />{{Service00}}</div>

Revision as of 15:57, 18 March 2021

Raspberry Pi 4 Model B
Raspberry Pi 4 Model B
Information

Categories: Raspberry Pi

Brand: Raspberry Pi

Description
Features
  • Rasbperry Pi 4 Model B

Interfaces

DSI CSI HDMI USB I2C I2S SPI UART RPi RJ45

Related products

{{{related}}}

Instruction

Raspberry Pi 4 Model B, the completely upgraded, re-engineered model of the Pi family. It has more powerful processor, faster networking, supports dual 4K output, and provides different choice of RAM.

Features

  • BCM2711B0 (ARM Cortex-A72)
    • 64-bit 1.5GHz quad-core
  • Choice of RAM
    • PI4B-1GB: 1GB
    • PI4B-2GB: 2GB
    • PI4B-4GB: 4GB
  • Gigabit Ethernet
  • 802.11ac 2.4GHz/5GHz dual-band NIC
  • Bluetooth 5.0, BLE
  • USB 3.0 x 2, USB 2.0 x 2
  • micro HDMI x 2 (supports 4Kp60)
  • PoE header (supports PoE HAT)
  • MicroSD slot
  • 3.5 mm audio jack
  • 40PIN GPIO header
  • CSI camera interface
  • DSI display interface
  • USB Type C power supply (5V/3A or above)

Resource

系列教程

Template:Raspberry Pi Study

FAQ

Question:
HDMI 屏幕无法显示怎么办?
Answer:

1. 树莓派有两个 HDMI 口,但在默认情况下,只工作于靠近电源的 HDMI 口。

2. 编辑 config.txt,加入:

hdmi_safe=1
overscan_left=-30
overscan_right=-30
overscan_top=-30
overscan_bottom=-30
hdmi_group=2
hdmi_mode=4
hdmi_drive=2
config_hdmi_boost=4

再重启动树莓派。

3. 如果上面这段无法解决您的问题,请重新注释掉,然后加入下面这段:

max_usb_current=1
hdmi_force_hotplug=1 
config_hdmi_boost=10
hdmi_group=2 
hdmi_mode=87 
hdmi_cvt 1920 1080 60 6 0 0 0

注意,1920 1080 需要改成显示器对应的分辨率。


Question:
树莓派4双屏显示如何指定触摸到主屏上?
Answer:

1.在树莓派终端输入xrandr,查看主屏所在的HDMI-ID(大部分是HDMI-1);

600px

2.在树莓派终端输入xinput,查看主屏所在的触摸ID(有2个触摸ID,如果不知道哪个是主屏,可以都试一下);

600px

3.运行指令:xinput map-to-output <touch ID> <HDMI-ID>

(把ID值对应后运行指令即可指定触摸到主屏上,如:xinput map-to-output 7 HDMI-1 )

File:Pi4-指定触摸-3.png

4.由于每次开机都需要重新输入指令,可以将此指令添加到开机自启中去:

sudo nano /etc/xdg/lxsession/LXDE-pi/autostart

添加: xinput map-to-output 7 HDMI-1 (记得改成自己对应ID),然后重启即可。

600px



Question:
为什么目前建议使用 Raspberry Pi OS 32-bit 版本,而非 64-bit 版本?
Answer:
目前树莓派官方推荐的系统是 Raspberry Pi OS 32-bit,而 64-bit 版本仍在测试阶段。 (点击下载 Raspberry Pi OS 64-bit)。

64-bit 版本存在一些已知问题,参见 官方论坛置顶帖



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