Advantech RSB-4220 handleiding
Handleiding
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51 RSB-4220 User Manual
Chapter 3 Software Functionality
Remove the SD card and insert it into RSB-4220, then open the serial console.
On the RSB-4220 platform, type #root (Login)
On the RSB-4220 platform, type #cd /tool
On the RSB-4220 platform, type #./helloworld
“Hello World!” should be visible on RSB-4220.
3.8.2 Developing GUI Programs with a Qt Library
The development kit can be used to develop a Qt-based GUI program. Follow the
instructions below to quickly convert a Qt project into a GUI application for RSB-
4220.
1. On the host PC, setup a Qt build environment.
2. Build Qt instructions are as follows:
3.8.3 Demo Program Source Code
3.8.3.1 Serial Port Programming
Refer to <BSP_PATH>/source/demo/uart for an example of sending and receiving
data via the serial port.
Receiving data
Sending data
Before programming the serial port, ensure that the serial port is in 232/422/485
mode.
Users can reference the uart demo source code to develop a uart application.
3.8.3.2 Watchdog Programming
RSB-4220 supports a hardware watchdog. The watchdog API follows POSIX stan-
dards. Valid timeout values range from 1 to 6553 seconds. If the desired timeout
value is outside this range, the driver will set the timeout value to the default value
(60 seconds).
Sample C code
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <signal.h>
#include <linux/watchdog.h>
Note! The Linux system SD card mounting point is /media/rootfs.
#source /usr/local/cross_compiler/linux-devkit/environment-setup
# cd projectdir
# qmake projectName.pro
# make
3.Run QT demo:
# ./qtappName -platform linuxfb
# ./uart_ctrl read /dev/ttyO1
# ./uart_ctrl write /dev/ttyO2
Bekijk gratis de handleiding van Advantech RSB-4220, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Advantech |
| Model | RSB-4220 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6307 MB |
