The 33th the Raspberry Pi meetup, the topic is “Raspberry Pi 4 + Ubuntu and Boot Analysis”.
Speaker 1: Taiten(Canonical)
Topic:Snap your application for embedded system
1) Snap and Ubuntu Store for IoT
2) Snap vs Docker
3) Snap your app demo
Speaker 2: StarNight
Topic: A journey to boot Linux on Raspberry Pi
Outline:
I will share several possible boot process of Linux distribution on Raspberry Pi, and the boot process of a Linux distribution with OSTree technology. Take Endless OS booting on Raspberry Pi as an example.
Lightning Talk 1: Alvin(Creative5)
Topic: Running Compal 5G module on Raspberry Pi 4
第三十三次 Raspberry Pi 社群聚會,希望能透過社群活動的分享和交流,找到更多 Raspberry Pi 的可能。本次主題是「Raspberry Pi 4 + Ubuntu 和系統開機分析 」。
分享者1:Taiten(Canonical)
題目:Snap your application for embedded system
1) Snap and Ubuntu Store for IoT
2) Snap vs Docker
3) Snap your app demo
分享者2:StarNight
題目:A journey to boot Linux on Raspberry Pi
大綱:本次將分享幾個 Linux distribution 在 Raspberry Pi 的可能開機過程,以及自己實做一個搭配 OSTree 技術的 Linux distribution 的開機流程。以 Endless OS 在 Raspberry Pi 上開機為例。
透過觀察幾個 Linux distribution 的開機過程,發現 U-Boot 可以做到將開機過程分為「高度硬體相關」與「一般系統皆可通用」的兩大步驟。特別是「一般系統皆可通用」的開機步驟,滿足搭配 OSTree 技術的系統(包含,但不限於)有方便、一致的開機模式需求。更進一步,有機會解決各硬體專屬 Device Tree 的佈署問題。
這次將分享如何實做讓系統在 Raspberry Pi 上開機的過程!
好消息是目前 Pi 4 有小改版,型號為 v1.2。根據 theregister 的報導,新版修正了 USB-C 的供電問題,可適用大部分的充電線(器)。此外,新版還進行了絲印的調整,可以減少焊接過程中發生錫橋。
檢查的方式是在命令列執行 cat /proc/cpuinfo,如果是 Pi4/4GB 在版本號(Revision)的部份會顯示 c03112,型號(Model)會顯示 Raspberry Pi 4 Model B Rev 1.2 就是新版(v1.2)。如果在 Revision 顯示 c03111,Model 顯示 Raspberry Pi 4 Model B Rev 1.1 那就是舊版(v1.1)。我們販售的 Pi 4 都是新版。
pi@raspberrypi:~ $ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 108.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3
...
Hardware : BCM2835
Revision : c03112
Serial : 10000000abb7260c
Model : Raspberry Pi 4 Model B Rev 1.2
The official and recommended USB-C power supply for Raspberry Pi 4
《規格》
* 45 X 48 X 27mm (不含線長及插頭長)
* 線長:約 1.5M(18 AWG captive cable)
* 插頭類型:USB Type-C
* Input:96V-264V AC
* Output:5.1V DC up to 3.0 A
* 輸出功率:15.3W
* 具短路、過載及過熱保護
* 顏色:黑色 / 白色隨機出貨
2019-06-20:
* Based on Debian Buster
* Support for Raspberry Pi 4 hardware
* FKMS OpenGL desktop graphics driver and xcompmgr compositing window manager used when running on Raspberry Pi 4
* Screen Configuration application added for use with FKMS driver
* Raspberry Pi 4 video output options added to Raspberry Pi Configuration
* Uses new PiXflat UI theme for GTK and Openbox
* CPU activity gauge plugin no longer shown on taskbar by default
* CPU temperature gauge plugin added (not shown by default)
* USB ejecter and Bluetooth taskbar icons hidden when not appropriate
* Version 74.0.3729.157 of Chromium web browser included
* Version 32.0.0.207 of Flash player included
* IDLE Python IDE removed
* Wolfram Mathematica removed temporarily due to incompatibility with Buster
* Display of package sizes removed from Recommended Software
* Appearance Settings modified to support independent settings for two monitors
* Oracle Java 7 and 8 replaced with OpenJDK 11
* Miscellaneous small bug fixes
* On-board 5GHz WiFi blocked by rfkill by default
The block is removed when taking one of the following actions:
- Selecting a locale in the first run wizard
- Setting the WiFi country in the Raspberry Pi Configuration tool or the Network Settings applet
- Setting the WiFi country in raspi-config
- Providing a wpa_supplicant.conf file through the boot partition
- Running 'rfkill unblock wifi'
* Boot partition size set to 256M
* Linux kernel 4.19.50
* Raspberry Pi firmware 88ca9081f5e51cdedd16d5dbc85ed12a25123201