Boo2Qt QSettings::filename making tricks when debugging 
Saturday, November 28, 2020, 09:18 PM Qt
Self note: application name, organisation name set, however some times the app parses the /root/.config/<org>/<appname>.conf and sometimes it parses the /.config/<org>/<appname>.conf
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rfkill - the beginning of a beautiful friendship 
Sunday, November 8, 2020, 03:47 PM Linux
1. If you want to block/unblock a single interface you have to specify it with a number:


rfkill unblock 1


And here comes a systemd unit which enables an USB Wifi dongle only:


/etc/systemd/system/rfkill-unblock-wifi.service
[Unit]
Description=RFKill-Unblock WiFi Devices
After=sys-subsystem-net-devices-wlan1.device
BindsTo=sys-subsystem-net-devices-wlan1.device

[Service]
Type=oneshot
ExecStart=/usr/sbin/rfkill unblock 1
ExecStop=
RemainAfterExit=no

[Install]
WantedBy=multi-user.target

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[Qt5]In the case if accented characters are not displayed from the tr() calls 
Friday, October 2, 2020, 09:18 AM
I ran into an issue which was familiar from many years ago from the Qt 4.x times with a recent setup: Qt 5.14 + MSVC2015.

Solution:

Add the following to the pro file_


win32-msvc* {
QMAKE_CXXFLAGS += /utf-8
}



And recompile everything.
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STM32CubeIDE - (Read)Failed determine breakpoint type 
Thursday, October 1, 2020, 08:30 PM
Make sure that the startup assembly file (MCU_name.s usually) is added to the project.
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STM32 DMA notes 
Tuesday, April 14, 2020, 08:52 PM
- When using burst mode you have to point to the DMAR register not the first register to target
- Timer update and CC DMA requests require different channels
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