Published: 16.08.2019
Copyright by Joy-IT
10
3.2“ / 3.5“ Touch-Display
In order to be able to output the image signal simultaneously on the TFT display and on the HDMI output,
additional steps must be carried out. The first step is to compile and install the Framebuffer-Copy program
using the following commands.
For the program to start when booting up the Raspberry Pi, this must be in the file
"/Etc/rc.local" will be added.
Add here before statement "exit 0" a new line with the following content:
Now, in the "/boot/config.txt" following text block under the previously added settings, starting on the
following page, must be added.
In this, the resolution, which is output from HDMI and Display, can be adjusted by commenting out the
respective triple block of "hmdi_group", "hdmi_mode" and "hdmi_cvt":
(In the following example, the resolution is 800x600 default)
6. GLEICHZEITIGE VERWENDUNG VON LCD UND HDMI
cd /tmp
sudo apt-get install -y cmake
git clone
https://github.com/tasanakorn/rpi-fbcp
mkdir -p rpi-fbcp/build
cd rpi-fbcp/build
cmake ..
make
sudo install fbcp /usr/local/bin/fbcp
sudo nano /etc/rc.local
fbcp &
