Run airodump-ng on Xiaomi8(dipper)

The dipper comes with qalcd 3.0 driver, it is possible to do wireless raw packet capture on the device directly.

Compile kernel for dipper

Follow the steps on https://wiki.lineageos.org/devices/dipper/build

cd ~/android/lineage
repo init -u https://github.com/LineageOS/android.git -b lineage-20.0 --git-lfs --depth=1
repo sync
source build/envsetup.sh
breakfast dipper
lunch lineageos_dipper_userdebug
mka kernel
mka boot_image

Spacelight

HW

OLED controller: SSD1309

Compile

Prerequisite Software

• Git for Windows

• STM32CubeMX 6.8.0 with the following components installed:

  • STM32CubeF4 Firmware Package V1.27.0
  • Azure RTOS STM32Cube expansion package for STM32F4 series V1.1.0

• IAR 8.40.2

Compile Procedure

1. create a generate dir(Z:\generated)
2. run command prompt as administrator, and create a directory symbolic link under spacelight\cubemx: mklink /d generated Z:\generated
3. update the generate_dir(which stores all the files that cubemx generated) inside generate_code.cmd
4. run generate_code.cmd, the script will
   • generate the IAR project & code and include the STM32F4 CMSIS lib
   • patch the generated code to call user written code
5. open cubemx\generated\project\EWARM\Project.eww in IAR
6. compile and run

Code Structure

• app: user written code for the project
• cubemx
  • generate_code.cmd: script to generate the IAR project
  • spacelight.ioc: cubemx config file
  • .extSettings: additional IAR project setting
• lib
  • u8g2: monochrome graphics library

GUI Block Diagram

Menu Item

• CCT Mode
• Effect Mode
• Lamp Count
• DMX Addr
• DMX Mode
• Wireless
• Lock Time
• Version
• Exit

Workload components

• CMSIS Lib
• RTOS: Azure RTOS(ThreadX)
• GUI: u8g2
  • Font library embedding
  • Icon embedding
• DMX512 protocol stack
• Algorithm
  • Blink
  • Breather
  • Lightning
  • CCT Drift
  • Fire

Peripherals

The project use the following IOMUX & peripherals:

GPIO

GPIO Input

• KEY1
• KEY2
• KEY3
• KEY4

GPIO Output

• R_LED
• G_LED
• B_LED

TIM

Thread design

• GUI thread: draw main interface
• worker thread:
• controller thread: handle key input, and

Concurrency

Presenter: rainer@grimm-jaud.de

Mutex

• Be as constant as possible, be as local as possible

• Bad

  m.lock();	
  sharedVariable = getVar();
  m.unlock();
  

• Good

  auto res = getVar();
  m.lock();
  sharedVariable = getVar();
  m.unlock();
  

• NNN=No Naked New

• NNM=No Naked Mutex