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--- raspberry [2021/03/10 18:47]
karl [Headless with WiFi]
+++ raspberry [2021/03/12 22:46]
karl [Realtime Kernel]
@@ Zeile 46: / Zeile 46: @@
 Second: create a file ''ssh'' in ''boot''.
-Scan for the Raspberry's IP-Address with
+Then insert the SD card into the Raspi and start to scan for the Raspberry's IP-Address with
   nmap -T5 -sP 10.0.1.0-255
 or with
@@ Zeile 164: / Zeile 164: @@
 	rm myprogram
 </code>
+===== Realtime Kernel =====
+  * https://www.get-edi.io/Real-Time-Linux-on-the-Raspberry-Pi/
+  * https://github.com/lueschem/edi-pi#creating-a-cross-development-lxd-container
+  * https://www.get-edi.io/
+  * https://www.raspberrypi.org/documentation/linux/kernel/building.md
+  * https://medium.com/@patdhlk/realtime-linux-e97628b51d5d
+  * https://lemariva.com/blog/2019/09/raspberry-pi-4b-preempt-rt-kernel-419y-performance-test
+Auf dem Raspberry Pi, mit Raspberry OS vom 11. Jan. 2021 ((https://www.raspberrypi.org/documentation/linux/kernel/building.md)):
+  sudo apt update
+  sudo apt upgrade
+  sudo apt install git bc bison flex libssl-dev make
+  git clone --depth=1 --branch rpi-4.19.y-rt https://github.com/raspberrypi/linux
+Configure Kernel ((https://www.raspberrypi.org/documentation/linux/kernel/configuring.md)):
+  sudo apt install libncurses5-dev
+  cd linux
+  make menuconfig
+Hierbei wurde jedoch weiters nichts konfiguriert.
+  make bcm2711_defconfig
+  make -j4 zImage
+  make -j4 modules
+  make -j4 dtbs
+Dauert etwa 1h15min.
+  sudo make -j4 modules_install
+  sudo make -j4 dtbs_install
+  sudo cp arch/arm/boot/dts/*.dtb /boot/
+  sudo cp arch/arm/boot/dts/overlays/*.dtb* /boot/overlays/
+  sudo cp arch/arm/boot/dts/overlays/README /boot/overlays/
+  sudo cp arch/arm/boot/zImage /boot/$KERNEL-rt.img
 {{tag>english software raspberry c++ linux technical}}

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