enable adb over tcpip

# enable adb over tcpip
$ adb tcpip 5555
or
$ adb -d tcpip 5555

# adb connect over tcpip
$ adb connect 192.168.35.9
$ adb -l

[Google Assistant] Install the SDK and Sample Code

reference
- https://developers.google.com/assistant/sdk/guides/service/python/embed/install-sample

$ sudo apt-get update
$ sudo apt-get install python3-dev python3-venv

$ python3 -m venv env

$ env/bin/python -m pip install --upgrade pip setuptools wheel

$ source env/bin/activate

(env) $ sudo apt-get install portaudio19-dev libffi-dev libssl-dev

(env) $ python -m pip install --upgrade google-assistant-sdk[samples]

(env) $ python -m pip install --upgrade google-auth-oauthlib[tool]
(env) $ google-oauthlib-tool --scope https://www.googleapis.com/auth/assistant-sdk-prototype --save --headless --client-secrets /path/to/client_secret_client-id.json


// voice input
(env) $ googlesamples-assistant-pushtotalk --project-id xxx --device-model-id yyy

// text input
(env) $ python -m googlesamples.assistant.grpc.textinput --device-id xxx --device-model-id yyy

Abbreviation

DRC

• Dynamic Range Control

DLKM

• Dynamically loadable kernel module

KMI

• Kernel Module Interface

GKI

• Generic Kernel Image

LTS

• Linux Long Term Supported (LTS) kernel

ACK

• Android Common Kernel

OAuth

• Open Authorization
• pronounced "oh-auth"

gRPC

• gRPC Remote Procedure Calls

SUPL

• Secure User Plane Location

OMA

• Open Mobile Alliance

pypi

• python package installer

WRP

• Watchpoint Register Pair

BRP

• Breakpoint Register Pair

BVRs

• Breakpoint Value Registers

IFTTT

• If this, then that

PAI

• play auto install

smali

• The names "Smali" and "Baksmali" are the Icelandic equivalents of "assembler" and "disassembler" respectively.
• Smali/Baksmali is an assembler/disassembler for the dex format used by dalvik, Android's Java VM implementation.

DFP

• downstream facing port (USB)

UFP

• upstream facing port (USB)

DRD

• dual-role-data (USB)

DRP

• dual-role-power (USB)

SPS

• Sequence Parameter Set

PPS

• Picture Parameter Set

ETA

• Estimated Time of Arrival

SEP

• Stream End Point
• Bluetooth

AMP

• Armada Media Pipeline
• synaptics

IV

• initial vector
• crypto, DRM, clear key/IV

CPM

• Clock/Power Management

install home-assistant on ubuntu

Ubuntu 18.04 및 Package 설치

• reference
• https://www.home-assistant.io/docs/installation/
• https://www.home-assistant.io/hassio/installation/#alternative-install-on-a-generic-linux-host

• ubuntu 18.04 설치
• 설치 파일 다운로드
• http://releases.ubuntu.com/18.04/
• http://releases.ubuntu.com/18.04/ubuntu-18.04.3-desktop-amd64.iso
• ubuntu 설치.
• storage : 40 GB ( > 32 GB)
• memory : 2 GB ( > 1 GB)

• 필요 package
• apparmor-utils
• apt-transport-https
• avahi-daemon
• ca-certificates
• curl
• dbus
• jq
• socat
• software-properties-common
• network-manager
• bash
• docker-ce

• package 설치
• sudo apt-get install apparmor-utils apt-transport-https avahi-daemon ca-certificates curl dbus jq socat software-properties-common network-manager
• bash
• https://askubuntu.com/questions/1064773/how-can-i-make-bin-sh-point-to-bin-bash
• docker-ce
• https://docs.docker.com/install/linux/docker-ce/ubuntu/
• docker-ce에 필요한 package 설치
$ sudo apt-get update
$ sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common
• docker apt-key 설치 및 확인
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
$ sudo apt-key fingerprint 0EBFCD88
• docker 설치를 위한 apt-repository 추가
$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
• docker-ce package 설치 및 확인
$ sudo apt-get update
$ sudo apt-get install docker-ce docker-ce-cli containerd.io
$ sudo docker run hello-world
• docker group에 user 추가
$ sudo usermod -aG docker account_name
• images, containers, volumes, or customized configuration files on
/var/lib/docker

• Hass.io installation
• prepare (install docker-ce with script)
* docker-ce를 설치했으면 다시 실행할 필요 없음.
$ sudo -i
$ apt-get install software-properties-common
$ add-apt-repository universe
$ apt-get update
$ apt-get install apparmor-utils apt-transport-https avahi-daemon ca-certificates curl dbus jq network-manager socat
$ curl -fsSL get.docker.com | sh
• install
$ sudo -i
$ curl -sL "https://raw.githubusercontent.com/home-assistant/hassio-installer/master/hassio_install.sh" | bash -s

[android] security patch error

# android security patch 중 다음과 같은 에러 발생

---
FAILED: out/soong/.intermediates/system/core/liblog/liblog/android_arm_armv7-a-neon_cortex-a7_core_shared/liblog.so.abidiff
(prebuilts/clang-tools/linux-x86/bin/header-abi-diff -allow-unreferenced-changes -allow-unreferenced-elf-symbol-changes -lib liblog -arch arm -o out/soong/.intermediates/system/core/liblog/liblog/android_arm_armv7-a-neon_cortex-a7_core_shared/liblog.so.abidiff -new out/soong/.intermediates/system/core/liblog/liblog/android_arm_armv7-a-neon_cortex-a7_core_shared/liblog.so.lsdump -old out/soong/.intermediates/system/core/liblog/liblog/android_arm_armv7-a-neon_cortex-a7_core_shared/liblog.so_ref.lsdump)|| (echo ' ---- Please update abi references by running platform/development/vndk/tools/header-checker/utils/create_reference_dumps.py -l liblog ----' && exit 1)
******************************************************
error: VNDK library: liblog's ABI has INCOMPATIBLE CHANGES Please check compatiblity report at : out/soong/.intermediates/system/core/liblog/liblog/android_arm_armv7-a-neon_cortex-a7_core_shared/liblog.so.abidiff
******************************************************
 ---- Please update abi references by running platform/development/vndk/tools/header-checker/utils/create_reference_dumps.py -l liblog ----

---

# 출력된 로그처럼 실행하면 또 에러 발생;;

$ development/vndk/tools/header-checker/utils/create_reference_dumps.py -l liblog

# 모델명을 파라미터로 넣어주면 정상적으로 업데이트 됨.

$ development/vndk/tools/header-checker/utils/create_reference_dumps.py -l liblog -products my_product

- 참고로 모델명은 lunch 파라미터와 동일.

TARGET_PRODUCT=my_product

set time on android console

### display date
# date
Tue Jul 13 19:25:15 GMT 1999

# date +'%D %T'
07/13/99 19:25:00


### set date
# date 07131924
Sat Jul 13 19:24:00 GMT 2019

# date 07131924.45
Sat Jul 13 19:24:45 GMT 2019

# date 071319241999.23
Tue Jul 13 19:24:23 GMT 1999

### help

# date --help
usage: date [-u] [-r FILE] [-d DATE] [+DISPLAY_FORMAT] [-D SET_FORMAT] [SET]

Set/get the current date/time. With no SET shows the current date.

Default SET format is "MMDDhhmm[[CC]YY][.ss]", that's (2 digits each)
month, day, hour (0-23), and minute. Optionally century, year, and second.
Also accepts "@UNIXTIME[.FRACTION]" as seconds since midnight Jan 1 1970.

-d      Show DATE instead of current time (convert date format)
-D      +FORMAT for SET or -d (instead of MMDDhhmm[[CC]YY][.ss])
-r      Use modification time of FILE instead of current date
-u      Use UTC instead of current timezone

+FORMAT specifies display format string using strftime(3) syntax:

%% literal %             %n newline              %t tab
%S seconds (00-60)       %M minute (00-59)       %m month (01-12)
%H hour (0-23)           %I hour (01-12)         %p AM/PM
%y short year (00-99)    %Y year                 %C century
%a short weekday name    %A weekday name         %u day of week (1-7, 1=mon)
%b short month name      %B month name           %Z timezone name
%j day of year (001-366) %d day of month (01-31) %e day of month ( 1-31)
%N nanosec (output only)

%U Week of year (0-53 start sunday)   %W Week of year (0-53 start monday)
%V Week of year (1-53 start monday, week < 4 days not part of this year)

%D = "%m/%d/%y"    %r = "%I : %M : %S %p"   %T = "%H:%M:%S"   %h = "%b"
%x locale date     %X locale time           %c locale date/time

eMMC PARTITION_CONFIG (Boot partition selection)

http://trac.gateworks.com/wiki/MMC

eMMC PARTITION_CONFIG (Boot partition selection)

Because eMMC provides multiple hardware partitions but only one can be selected at a time. A non-volatile register in the eMMC device provides a PARTITION_CONFIG that is used to determine what partition is selected at power-up for boot devices. To access this data you need to read/write a 'Card Specific Data' or CSD register (EXT_CSD[179] - EXT_CSC_PART_CONFIG). This can be done both in Linux (see below) or U-Boot (see below).

U-Boot Support ¶

U-Boot provides access to eMMC devices through the mmc command and interface but adds an additional argument to the mmc interface to describe the hardware partition. The interface is therefore described as 'mmc <dev> <part>' where 'dev' is the mmc device (some boards have more than one) and 'part' is the hardware partition: 0=user, 1=boot0, 2=boot1.

Use the mmc dev command to specify the device and partition:

mmc dev 0 0 # select user hw partition
mmc dev 0 1 # select boot0 hw partition
mmc dev 0 2 # select boot1 hw partition

If U-Boot has been built with CONFIG_SUPPORT_EMMC_BOOT some additional mmc commands are available:

• mmc bootbus <dev> <boot_bus_width> <reset_boot_bus_width> <boot_mode>
• mmc bootpart-resize <dev> <boot-part-size-mb> <rpmb-part-size-mb>
• mmc partconf <dev> <boot_ack> <boot-partition> <partition-access> # set PARTITION_CONFIG field
• mmc rst-function <dev> <value> # change RST_n_FUNCTION field between 0|1|2 (write-once)

The mmc partconf command can be used to configure the PARTITION_CONFIG specifying what hardware partition to boot from:

mmc partconf 0 0 0 0 # disable boot partition (default unset condition; boots from user partition)
mmc partconf 0 1 1 0 # set boot0 partition (with ack)
mmc partconf 0 1 2 0 # set boot1 partition (with ack)
mmc partconf 0 1 7 0 # set user partition (with ack)

If U-Boot has been built with CONFIG_SUPPORT_EMMC_RPMB the mmc rpmb command is available for reading, writing and programming the key for the Replay Protection Memory Block (RPMB) partition in eMMC.

When using U-Boot to write to eMMC (or microSD) it is often useful to use the gzwrite command. For example if you have a compressed 'disk image' you can write it to your eMMC (assuming it is mmc dev 0) with:

tftpboot ${loadaddr} disk-image.gz && gzwrite mmc 0 ${loadaddr} ${filesize}

• The disk-image.gz contains a partition table at offset 0x0 as well as partitions at their respective offsets (according to the partition table) and has been compressed with gzip
• If you know the flash offset of a specific partition (which you can determine using the part list mmc 0 command) you can also use gzwrite to flash a compressed partition image

Linux Support

Linux presents the various hardware partitions as separate devices:

• /dev/mmcblk0boot0 - BOOT0 partition
• /dev/mmcblk0boot1 - BOOT1 partition
• /dev/mmcblk0rpmb - RPMB partition
• /dev/mmcblk0 - USER partition

Note that the BOOT partitions by default are read-only as they are typically used for sensitive boot firmware. To write to them you can disable force_ro in sysfs via:

echo 0 > /sys/class/block/mmcblk0boot0/force_ro

The Linux mmc application provides access to eMMC configuration through CSD registers. This open-source application is available at ​http://git.kernel.org/cgit/linux/kernel/git/cjb/mmc-utils.git/.

• To build it:

  git clone git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git
  cd mmc-utils
  make
  

• Alternatively you can install this from a pre-built deb:
  • Newport (arm64):

    wget http://dev.gateworks.com/images/mmc-utils_0~gita3d3331-3~armbian5.35+1_arm64.deb
    dpkg -i mmc-utils_0~gita3d3331-3~armbian5.35+1_arm64.deb
    

• Ventana (armhf):

  wget http://dev.gateworks.com/images/mmc-utils_0~gita3d3331-3~armbian5.35+1_armhf.deb
  dpkg -i mmc-utils_0~gita3d3331-3~armbian5.35+1_armhf.deb
  

You can use the mmc utility to configure the eMMC PARTITION_CONFIG to specify the boot device on power-up via mmc bootpart enable <boot_partition> <send_ack> <device> where boot_partition specifies the hardware partition (1=boot0, 2=boot1, 7=user), send_ack specifies the device must send an awknoledgement (for fast boot), and device is the root mmc block device of the eMMC:

# set boot partition to boot0
mmc bootpart enable 1 0 /dev/mmcblk0
# set boot partition to boot1
mmc bootpart enable 2 0 /dev/mmcblk0
# set boot partition to user
mmc bootpart enable 7 0 /dev/mmcblk0

Some additional use cases:

# show PARTITION_CONFIG:
mmc extcsd read /dev/mmcblk0 | grep PARTITION_CONFIG
# show BUS CONFIG:
mmc extcsd read /dev/mmcblk0 | grep BOOT_BUS_CONDITIONS
# disable boot partition
mmc bootpart enable 0 0 /dev/mmcblk0

References:

• ​https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/mmc/mmc-tools.txt