[嵌入式]STM32MP157F-DK2 使用体验

This is designed for STM32MP157F-DK2

It costs me almost two years.

FPS

(while true; do export fps=`cat /sys/kernel/debug/dri/0/state | grep fps -m1 | grep -o '[0-9]\+'`; echo display ${fps}fps; sleep 4; done) &

curl

curl http://121.5.149.236/snow.mpg --verbose --output snow.mpg

gstreamer

Internet file

Run After Exit SSH

nohup gst-launch-1.0 playbin uri=http://XX.157.101.63/watch.mp4 &

local file

gst-launch-1.0 playbin uri=file:///home/root/watch.mp4
/* Display in framebuffer (usually a TFT LCD)*/
gst-launch-1.0 filesrc location=/home/root/littleVGL/maria.mpg ! decodebin ! videoconvert ! fbdevsink device=/dev/fb0
#test
gst-launch-1.0 -v videotestsrc ! video/x-raw,format=YUY2 ! videoconvert ! autovideosink
#playbin or filesrc >> pipe
gst-launch-1.0 playbin uri=file:///home/root/Video/sight.mp4 ! decodebin ! videoconvert ! autovideosink

gst-launch-1.0 filesrc location=/home/root/Video/sight.mp4 ! decodebin ! videoconvert ! videoscale ! video/x-raw,width=320,height=240,framerate=30/1 ! autovideosink
#play online video
gst-launch-1.0 uridecodebin uri=http://XX.157.101.63/Watch.mp4 ! videoscale ! video/x-raw,width=800,height=480 ! autovideosink

ffmpeg

display video information

ffmpeg -i Video/Watch.mp4 w.mpeg
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.3.0 (GCC)
  configuration: --disable-stripping --enable-pic --enable-shared --enable-pthreads --cross-prefix=arm-ostl-linux-gnueabi- --ld=u=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 --sysroot=/recipe-sysroot' --cc='arm-ostl-linux-gnueabi-gcc -mthumb -mfpu=neon-vfpsroot=/recipe-sysroot' --cxx='arm-ostl-linux-gnueabi-g++ -mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 --sysroot=/reux --enable-cross-compile --extra-cflags=' -O2 -pipe -g -feliminate-unused-debug-types -fmacro-prefix-map==/usr/src/debug/ffmpegebug/ffmpeg/4.2.2-r0 -fdebug-prefix-map=/recipe-sysroot= -fdebug-prefix-map=/recipe-sysroot-native= -mthumb -mfpu=neon-vfpv4 -mf/recipe-sysroot' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed' --sysroot=/recipe-sysroot --libdir=/usr/lib --shpeg --disable-mipsdsp --disable-mipsdspr2 --cpu=cortex-a7 --pkg-config=pkg-config --disable-static --enable-alsa --enable-avcodeenable-avformat --enable-avresample --enable-bzlib --disable-libfdk-aac --enable-gpl --disable-libgsm --disable-indev=jack --disibmfx --disable-libmp3lame --disable-openssl --enable-postproc --disable-sdl2 --disable-libspeex --enable-swresample --enable-sw --disable-vdpau --disable-libvpx --enable-libx264 --disable-libx265 --enable-libxcb --enable-outdev=xv --enable-zlib
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Video/Watch.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:03:02.37, start: 0.000000, bitrate: 714 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x480 [SAR 16:15 DAR 16:9], 578 kb/s, 29.97 fps, 29.97
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/03/2019.
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/03/2019.
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> mpeg1video (native))
  Stream #0:1 -> #0:1 (aac (native) -> mp2 (native))
Press [q] to stop, [?] for help
[mpeg @ 0x60a10] VBV buffer size not set, using default size of 230KB
If you want the mpeg file to be compliant to some specification
Like DVD, VCD or others, make sure you set the correct buffer size
Output #0, mpeg, to 'w.mpeg':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
    Stream #0:0(und): Video: mpeg1video, yuv420p, 800x480 [SAR 16:15 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/03/2019.
      encoder         : Lavc58.54.100 mpeg1video
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    Stream #0:1(eng): Audio: mp2, 44100 Hz, stereo, s16, 384 kb/s (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/03/2019.
      encoder         : Lavc58.54.100 mp2
frame= 5465 fps= 29 q=31.0 Lsize=   19288kB time=00:03:02.37 bitrate= 866.4kbits/s speed=0.972x
video:10562kB audio:8549kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.924291%

Useful Command

ffmpeg -i norway.mp4 -s 800*480 output.mp4 -q:v 1
/* A different encode for Video contrast to H.264 */
ffmpeg -i radio.mp4 maria.mpeg
#LOW Quality but the file is small
ffmpeg -i in.mp4 -vcodec libx264 -preset veryslow -threads 2 -s 800*480 -acodec copy out.mp4
#High Quality but the file is large
ffmpeg -i now.mp4 -preset ultrafast -s 800*480 Apple.mp4
#crop w:h:x:y
ffmpeg -i input.mp4 -vf crop=400:400:10:10 output.mp4 -y

information

gst-discoverer-1.0 sight.mp4
 
Analyzing file:///home/root/Video/sight.mp4
Done discovering file:///home/root/Video/sight.mp4

Topology:
  container: Quicktime
    audio: MPEG-4 AAC
    video: H.264 (High Profile)

Properties:
  Duration: 0:00:09.267000000
  Seekable: yes
  Live: no
  Tags:
      audio codec: MPEG-4 AAC audio
      maximum bitrate: 69000
      bitrate: 55392
      encoder: Lavf58.29.100
      container format: ISO MP4/M4A
      video codec: H.264 / AVC

gst-inspect-1.0

gst-inspect-1.0 fbdevsink
Factory Details:
  Rank                     none (0)
  Long-name                fbdev video sink
  Klass                    Sink/Video
  Description              Linux framebuffer videosink
  Author                   Sean D'Epagnier <sean@depagnier.com>

Plugin Details:
  Name                     fbdevsink
  Description              Linux framebuffer video sink
  Filename                 /usr/lib/gstreamer-1.0/libgstfbdevsink.so
  Version                  1.14.4
  License                  LGPL
  Source module            gst-plugins-bad
  Source release date      2018-10-02
  Binary package           GStreamer Bad Plug-ins source release
  Origin URL               Unknown package origin

GObject
 +----GInitiallyUnowned
       +----GstObject
             +----GstElement
                   +----GstBaseSink
                         +----GstVideoSink
                               +----GstFBDEVSink

Pad Templates:
  SINK template: 'sink'
    Availability: Always
    Capabilities:
      video/x-raw
                 format: { (string)RGB, (string)BGR, (string)BGRx, (string)xBGR, (string)RGB, (string)RGBx, (string)xRGB, (string)RGB15, (string)RGB16 }
                  width: [ 1, 2147483647 ]
                 height: [ 1, 2147483647 ]
              framerate: [ 0/1, 2147483647/1 ]

Element has no clocking capabilities.
Element has no URI handling capabilities.

Pads:
  SINK: 'sink'
    Pad Template: 'sink'

Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: "fbdevsink0"
  parent              : The parent of the object
                        flags: readable, writable
                        Object of type "GstObject"
  sync                : Sync on the clock
                        flags: readable, writable
                        Boolean. Default: true
  max-lateness        : Maximum number of nanoseconds that a buffer can be late before it is dropped (-1 unlimited)
                        flags: readable, writable
                        Integer64. Range: -1 - 9223372036854775807 Default: 20000000
  qos                 : Generate Quality-of-Service events upstream
                        flags: readable, writable
                        Boolean. Default: true
  async               : Go asynchronously to PAUSED
                        flags: readable, writable
                        Boolean. Default: true
  ts-offset           : Timestamp offset in nanoseconds
                        flags: readable, writable
                        Integer64. Range: -9223372036854775808 - 9223372036854775807 Default: 0
  enable-last-sample  : Enable the last-sample property
                        flags: readable, writable
                        Boolean. Default: true
  last-sample         : The last sample received in the sink
                        flags: readable
                        Boxed pointer of type "GstSample"
  blocksize           : Size in bytes to pull per buffer (0 = default)
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 4294967295 Default: 4096
  render-delay        : Additional render delay of the sink in nanoseconds
                        flags: readable, writable
                        Unsigned Integer64. Range: 0 - 18446744073709551615 Default: 0
  throttle-time       : The time to keep between rendered buffers (0 = disabled)
                        flags: readable, writable
                        Unsigned Integer64. Range: 0 - 18446744073709551615 Default: 0
  max-bitrate         : The maximum bits per second to render (0 = disabled)
                        flags: readable, writable
                        Unsigned Integer64. Range: 0 - 18446744073709551615 Default: 0
  show-preroll-frame  : Whether to render video frames during preroll
                        flags: readable, writable
                        Boolean. Default: true
  device              : The framebuffer device eg: /dev/fb0
                        flags: readable, writable
                        String. Default: null

display the fps of mi-pi

cat /sys/kernel/debug/dri/0/state | grep fps -m1

iw

#scan SSID
iw dev wlan0 scan | grep SSID
#link status
iw dev wlan0 link
#list dev performance
iw dev list
#connect SSID without password
iw dev wlan0 connect mteaching
#connect SSID with password
iw dev wlan0 connect mteaching keys d:0:12345678

connect to wireless network

ifconfig wlan0 up
sleep 5

wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
iw dev wlan0 link
udhcpc -i wlan0
ping www.baidu.com -c 4
ntpdate ntp1.aliyun.com

initial wireless network

wpa_passphrase mteaching 12345678 >> /etc/wpa_supplicant.conf

#No Password
wpa_passphrase longsys >> /etc/wpa_supplicant.conf

wpa_supplicant.conf

root@stm32mp1:~# cat /etc/wpa_supplicant.conf
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
update_config=1

network={
        key_mgmt=NONE
}

script

download

echo "- - - - Viedo Download - - - -"

items=(
"arduino.mp4" "done.mp4" "ferrari.mp4" "mac.mp4" "mpu.mp4"
"norway.mp4" "sight.mp4" "signal.mp4" "travel.mp4" "watch.mp4"
)

for item in ${items[*]}
do 
	wget "http://82.157.101.63/${item}" 
	echo "[done]"
done

without certificate

wget https://www.apple.com.cn/105/media/cn/iphone-12/2020/7f5b7de7-9f8c-41eb-bf3b-f294773108e6/anim/hero-purple/large_2x.mp4 --no-check-certificate

play

ehco "- - - Video Player by GStreamer - - -"
for item in `ls *.mp4`
do
	echo "Now Play Video -->[${item}]"
	gst-launch-1.0 playbin uri=file:///home/root/Video/${item}
	echo -e "- - - End - - -\r\n"
done

scp

transfer file between hosts

scp output.mpeg  root@192.168.137.10:/home/root/Video

pscp

#'r' means directory supported, pscp is provided by SSH
pscp -r D:\Web\monkey root@120.26.185.144:/var/www/html

weston

version V1.2.0

#start
systemctl start weston
#stop
systemctl stop weston

version 3.0.0

systemctl start weston@root.service

systemctl stop weston@root.service

Some Linux Cmd

fbtft

fb-test

fb-test -r
sleep 1
fb-test -g
sleep 1
fb-test -b
sleep 1
fb-test -w

monitor

cpu temperature

root@stm32mp1:/sys/devices/virtual/thermal/thermal_zone0# cat temp
62866

package

process

apt-get install nano
apt-get install redis
apt-get install nginx
apt-get install mosquitto mosquitto-clients

hardware supported by python

apt-get install python3-pip
apt-get install libgpiod-python
apt-get install python3-smbus	
apt-get install python3-spidev

software supported by python

apt-get install python3-dbus
apt-get install python3-sqlite3
apt-get install python3-gi

install package with pip

pip3 install paho-mqtt -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
pip3 install requests -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
pip3 install --user meson
export PATH=/home/pi/.local/bin:$PATH

alias python="python3"
sudo mv /usr/bin/python3 python

update dtb

make dtbs
scp arch/arm/boot/dts/stm32mp157c-dk2.dtb root@192.168.7.1:/boot

apt

search

apt-cache searsh redis

update

install

apt-get install ntpdate

synchronization

ntpdate ntp1.aliyun.com

add timezone

apt-cache search zone

install timezone

apt-get install tzdata-asia

set timezone

timedatectl set-timezone 'Asia/Shanghai'

Glib

install

sudo apt-get install libglib2.0-dev
reference url:
	https://www.cnblogs.com/alexyuyu/articles/2555216.html
    https://blog.csdn.net/andylauren/category_6219334.html

C Build

pkg-config --cflags --libs glib-2.0
	-I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -lglib-2.0

timestamp

millisecond

#include <stdio.h>
#include <sys/time.h>

int main() {
    struct timeval start, end;
    gettimeofday( &start, NULL );
    sleep(3); 
    gettimeofday( &end, NULL );
    int timeInterval = 1000000 * ( end.tv_sec - start.tv_sec ) + end.tv_usec - start.tv_usec; 
    printf("time: %d us\n", timeInterval);
    return 0;
}

compression and decompression

#compression 
zip:
	zip -q -r GDBus-master.zip GDBus-master
tar:
	tar -cvf file.tar file
tar.gz
	tar -czf file.tar.gz file

#decompression
*.zip
	unzip master.zip
*.tar
	tar -xvf file.tar
*.tar.gz
	tar -xzvf file.tar.gz
*.tar.bz2
	tar xjvf file.tar.bz2
*.tar.Z
	tar -xZvf file.tar.Z
*rar
	unrar e file.rar

Shell

echo "We used the Linux shell script mainly for the installation."

if [ $EUID != 0 ];then
    echo "You aren't the root."
fi

array=(ABCDEF)
echo $array
echo ${#array[@]}

array=(A B C D E F)
echo $array
echo ${#array[@]}

for i in ${array[*]}
do
    echo $i
done

i=0
sum=0
while(( $i != 10 ))
do
#    let "i++"
    i=`expr $i + 1`
    echo $i
done

i=0
sum=0
while [[ $i != 10 ]]
do
    #let "i++"
    i=`expr $i + 1`
    echo $i
done

echo ******************************

modetest

root@stm32mp1:~# modetest -M stm
Encoders:
id      crtc    type    possible crtcs  possible clones
34      40      DSI     0x00000001      0x00000002

Connectors:
id      encoder status          name            size (mm)       modes   encoders
35      34      connected       DSI-1           52x86           2       34
  modes:
        index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
  #0 480x800 50.00 480 578 610 708 800 815 825 839 29700 flags: nhsync, nvsync; type: preferred, driver
  #1 480x800 60.00 480 550 582 654 800 815 825 841 33000 flags: nhsync, nvsync; type: driver
  props:
        1 EDID:
                flags: immutable blob
                blobs:

                value:
        2 DPMS:
                flags: enum
                enums: On=0 Standby=1 Suspend=2 Off=3
                value: 0
        5 link-status:
                flags: enum
                enums: Good=0 Bad=1
                value: 0
        6 non-desktop:
                flags: immutable range
                values: 0 1
                value: 0
        4 TILE:
                flags: immutable blob
                blobs:

                value:
        20 CRTC_ID:
                flags: object
                value: 40

CRTCs:
id      fb      pos     size
40      0       (0,0)   (480x800)
  #0 480x800 50.00 480 578 610 708 800 815 825 839 29700 flags: nhsync, nvsync; type: preferred, driver
  props:
        22 ACTIVE:
                flags: range
                values: 0 1
                value: 1
        23 MODE_ID:
                flags: blob
                blobs:

                value:
                        04740000e00142026202c40200002003
                        2f03390347030000320000000a000000
                        48000000343830783830300000000000
                        00000000000000000000000000000000
                        00000000
        19 OUT_FENCE_PTR:
                flags: range
                values: 0 18446744073709551615
                value: 0
        24 VRR_ENABLED:
                flags: range
                values: 0 1
                value: 0
        31 BACKGROUND_COLOR:
                flags: range
                values: 0 18446744073709551615
                value: 18446462598732840960
        28 GAMMA_LUT:
                flags: blob
                blobs:

                value:
        29 GAMMA_LUT_SIZE:
                flags: immutable range
                values: 0 4294967295
                value: 256

Planes:
id      crtc    fb      CRTC x,y        x,y     gamma size      possible crtcs
36      0       0       0,0             0,0     0               0x00000001
  formats: AR24 XR24 RG24 RG16 AR15 XR15 AR12 XR12 C8
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 1
        17 FB_ID:
                flags: object
                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 480
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 800
        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
                value: 31457280
        12 SRC_H:
                flags: range
                values: 0 4294967295
                value: 52428800
        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
                        01000000000000000900000018000000
                        01000000400000004152323458523234
                        52473234524731364152313558523135
                        41523132585231324338202000000000
                        ff010000000000000000000000000000
                        0000000000000000
                in_formats blob decoded:
                         AR24:  LINEAR
                         XR24:  LINEAR
                         RG24:  LINEAR
                         RG16:  LINEAR
                         AR15:  LINEAR
                         XR15:  LINEAR
                         AR12:  LINEAR
                         XR12:  LINEAR
                         C8  :  LINEAR
        38 alpha:
                flags: range
                values: 0 65535
                value: 65535
        39 zpos:
                flags: immutable range
                values: 0 0
                value: 0
41      0       0       0,0             0,0     0               0x00000001
  formats: AR24 RG24 RG16 AR15 AR12 C8
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 0
        17 FB_ID:
                flags: object
                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 0
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 0
        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
                value: 0
        12 SRC_H:
                flags: range
                values: 0 4294967295
                value: 0
        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
                        01000000000000000600000018000000
                        01000000300000004152323452473234
                        52473136415231354152313243382020
                        3f000000000000000000000000000000
                        0000000000000000
                in_formats blob decoded:
                         AR24:  LINEAR
                         RG24:  LINEAR
                         RG16:  LINEAR
                         AR15:  LINEAR
                         AR12:  LINEAR
                         C8  :  LINEAR
        43 alpha:
                flags: range
                values: 0 65535
                value: 65535
        44 zpos:
                flags: immutable range
                values: 1 1
                value: 1

make some test

#RGB Display
root@stm32mp1:~#modetest -s 35@40:480x800@RG24 -M stm
setting mode 480x800-50.00Hz@RG24 on connectors 35, crtc 40

find

#Find files in current directory by name.
find . | grep weston.ini
#Find special text in the files.
find main.c | xargs grep -rin sync

hexdump

hexdump -C main -s 5672 -n 16

convert

convert m.png -resize 64x gnu.png
convert ios.jpg -resize x480 1.jpg

convert 1.jpg -crop 480x800+0+28 iOS.jpg
identify iOS.jpg

Thread

show thread(s) in process

ps

ps -T -p PID

top

top -H -p PID

kill a process

ps afx | grep ...

Blue Z Stack

hcitool

Query Information

hcitool leinfo B8:8A:5E:78:7E:1E
Requesting information ...
        Handle: 64 (0x0040)
        LMP Version: 4.2 (0x8) LMP Subversion: 0x321
        Manufacturer: Texas Instruments Inc. (13)
        Features: 0x19 0x00 0x00 0x00 0x00 0x00 0x00 0x00

dump

#btmon may be more helpful
btmon

hcidump --raw -i hci0 -t -X

How to save logs and open with wireShark

Open the file directly.

whitelist

BLE Whitelist

The relationship between Character ID and Blue Z

In Arduino Code

#define SERVICE_UUID        "4FAFC201-1FB5-459E-8FCC-C5C9C331914B"
#define CHARACTERISTIC_UUID "BEB5483E-36E1-4688-B7F5-EA07361B26A8"

In Blue Z

root@stm32mp1:~# hcitool lescan | grep mon
4C:75:25:BB:86:EA mongoose OS

root@stm32mp1:~# bluetoothctl
Agent registered
[CHG] Controller 43:43:A1:12:1F:AC Pairable: yes
[bluetooth]# connect 4C:75:25:BB:86:EA
Attempting to connect to 4C:75:25:BB:86:EA
[CHG] Device 4C:75:25:BB:86:EA Connected: yes
[CHG] Device 4C:75:25:BB:86:EA Name: mongoose OS
[CHG] Device 4C:75:25:BB:86:EA Alias: mongoose OS
Connection successful
[CHG] Device 4C:75:25:BB:86:EA UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Device 4C:75:25:BB:86:EA UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[NEW] Primary Service (Handle 0x17c4)
        /org/bluez/hci0/dev_4C_75_25_BB_86_EA/service0001
        00001801-0000-1000-8000-00805f9b34fb
        Generic Attribute Profile
[NEW] Characteristic (Handle 0x179c)
        /org/bluez/hci0/dev_4C_75_25_BB_86_EA/service0001/char0002
        00002a05-0000-1000-8000-00805f9b34fb
        Service Changed
[NEW] Descriptor (Handle 0xb5ac)
        /org/bluez/hci0/dev_4C_75_25_BB_86_EA/service0001/char0002/desc0004
        00002902-0000-1000-8000-00805f9b34fb
        Client Characteristic Configuration
[NEW] Secondary Service (Handle 0x17c4)
        /org/bluez/hci0/dev_4C_75_25_BB_86_EA/service0028
        /* service */
        4fafc201-1fb5-459e-8fcc-c5c9c331914b
        Vendor specific
[NEW] Characteristic (Handle 0x179c)
        /org/bluez/hci0/dev_4C_75_25_BB_86_EA/service0028/char0029
        CHARACTERISTIC_UUID
        /* characteristic */
        beb5483e-36e1-4688-b7f5-ea07361b26a8
        Vendor specific
[NEW] Descriptor (Handle 0xc2dc)
        /org/bluez/hci0/dev_4C_75_25_BB_86_EA/service0028/char0029/desc002b
        00002902-0000-1000-8000-00805f9b34fb
        Client Characteristic Configuration
[CHG] Device 4C:75:25:BB:86:EA UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Device 4C:75:25:BB:86:EA UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[CHG] Device 4C:75:25:BB:86:EA UUIDs: 4fafc201-1fb5-459e-8fcc-c5c9c331914b
[CHG] Device 4C:75:25:BB:86:EA ServicesResolved: yes
[mongoose OS]#

CAN Bus

Link layer

ip addr
#what's dbitrate and fd?
ip link set can0 type can bitrate 500000
ip link set can0 up type can bitrate 1000000 dbitrate 2000000 fd on
ip -details link show can0
ip link set can0 up
ip -details link show can0
ifconfig

DTS

SPI

&spi5 {
	cs-gpios = <&gpiof 6 0>;
    status = "okay";
	spidev@0{
        compatible = "spidev";
        reg = <0>;
        spi-max-frequency = <100000000>;
    };
};

mcp2515

&spi5 {
	cs-gpios = <&gpiof 6 0>;
    status = "okay";
		
    mcp2515@0{
    	compatible = "microchip,mcp2515";
        reg = <0>;
        spi-max-frequency = <100000000>;
	};
};

PWM

/sys/class/pwm

/*ACT*/
pwm1_pins_a: pwm1-0 {
	pins {
		pinmux = <STM32_PINMUX('E', 9, AF1)>, /* TIM1_CH1 */
				 <STM32_PINMUX('E', 11, AF1)>, /* TIM1_CH2 */
				 <STM32_PINMUX('E', 14, AF1)>; /* TIM1_CH4 */
		bias-pull-down;
		drive-push-pull;
		slew-rate = <0>;
		};
	};
/*NO ACT*/
pwm1_pins_a: pwm1-0 {
	pins {
    	pinmux = <STM32_PINMUX('E', 9, AF1)>,  /* TIM1_CH1 */
				 <STM32_PINMUX('D', 15, AF1)>,  /* TIM1_CH4 */
        bias-pull-down;
		drive-push-pull;
		slew-rate = <0>;
		};
	};

Support for ST7701

panel_otm8009a: panel-otm8009a@0 {
    compatible = "techstar,ts8550b";
    reg = <0>;
    reset-gpios = <&gpioe 4 GPIO_ACTIVE_LOW>;
    VCC-supply = <&v3v3>;
    IOVCC-supply = <&v3v3>;
    status = "okay";

    port {
    	panel_in: endpoint {
    		remote-endpoint = <&dsi_out>;
    	};
    };
};