dnlrs / willy-board

ESP32 Probe Request Sniffer

ESP32 Probe Request Sniffer

Esp32 board software.

SNTP Server Configuration on Windows

Timeline.h provides concurrent access to central clock for the board. central clock is keep updated by SNTP server. HOW TO CONFIGURE SNTP SERVER ON WINDOWS 10:

1. open regedit

2. navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\W32Time and locate "Start" registry key

3. Double click on "Start" and edit the value

   Possible values (startup type):

   • Automatic - 2
   • Automatic (Delayed Start) - 2
   • Manual - 3
   • Disabled - 4

   When changing to Automatic (Delayed Start), a new key DelayedAutostart is created with value 1. When you change to Automatic from Automatic (Delayed Start), DelayedAutostart change value to 0.

4. change it to 2 (Automatic)

5. open cmd with privileges

6. type commands:

   net start w32time
   
   reg add HKLM\system\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer /v Enabled /t REG_DWORD /d 0x1 /f w32tm /config /syncfromflags:manual /reliable:yes /update
   
   net stop w32time
   net start w32time

Now NTP server should answer requests at MACHINE_IP_ADDRESS at port 123.
In case you see through wireshark that the machine does not reply to requests then disable windows firewall or add a rule allowing sntp connection on that port and retry.

Configuration files

sdconfig.defaults

When updating esp-idf version, it is not uncommon to find that new Kconfig options are introduced. In some cases, such as when sdkconfig file is under revision control, the fact that sdkconfig file gets changed by the build system may be inconvenient. The build system offers a way to avoid this, in the form of sdkconfig.defaults file. This file is never touched by the build system.

Project build targets will automatically create sdkconfig file, populated with the settings from sdkconfig.defaults file, and the rest of the settings will be set to their default values. Note that when make defconfig is used, settings in sdkconfig will be overriden by the ones in sdkconfig.defaults.

Kconfig.projbuild

This is an equivalent to Makefile.projbuild for component configuration KConfig files. If you want to include configuration options at the top-level of menuconfig, rather than inside the “Component Configuration” sub-menu, then these can be defined in the KConfig.projbuild file alongside the component.mk file.

Makefile.projbuild
For components that have build requirements that must be evaluated in the top-level project make pass, you can create the file Makefile.projbuild in the component directory. This makefile is included when project.mk is evaluated.

Take care when adding configuration values in this file, as they will be included across the entire project configuration. Where possible, it’s generally better to create a KConfig file for component configuration.