WiringNP in QT - Revision history

Admin at 19:43, 20 April 2020

2020-04-20T19:43:21Z

Admin: /* Use in QT */

2020-04-20T19:24:45Z

Use in QT

Admin: Created page with "== Installing WiringNP == The WiringNP in the /root folder, at least for NanoPI K1 Plus, is not good. It shows the NanoPI Neo/Neo2 GPIOs. Reinstall it from sources: git cl..."

2020-04-20T19:23:03Z

Created page with "== Installing WiringNP == The WiringNP in the /root folder, at least for NanoPI K1 Plus, is not good. It shows the NanoPI Neo/Neo2 GPIOs. Reinstall it from sources: git cl..."

New page

== Installing WiringNP ==

The WiringNP in the /root folder, at least for NanoPI K1 Plus, is not good. It shows the NanoPI Neo/Neo2 GPIOs.

Reinstall it from sources:

git clone https://github.com/friendlyarm/WiringNP
cd WiringNP/
chmod 755 build
./build

then, check it via gpio command

gpio readall

== Use in QT ==

Add the following line to <project>.pro:

LIBS += /usr/local/lib/libwiringPi.so

It will include the libpthread.so library automatically.

In the files, don't forget to add

#include <wiringPi.h>

and

wiringPiSetup();

← Older revision		Revision as of 19:43, 20 April 2020
Line 13:		Line 13:

	gpio readall		gpio readall
		+
		+	== Basic C test ==
		+
		+	#include <wiringPi.h>
		+	int main(void)
		+	{
		+	wiringPiSetup();
		+	pinMode(21, OUTPUT);
		+	for(;;)
		+	{
		+	digitalWrite(21, HIGH);
		+	delayMicroseconds(500);
		+	digitalWrite(21, LOW);
		+	delayMicroseconds(3500);
		+	}
		+	}
		+
		+	Compile with:
		+
		+	gcc -Wall -o test test.c -lwiringPi -lpthread

	== Use in QT ==		== Use in QT ==

← Older revision		Revision as of 19:24, 20 April 2020
Line 29:		Line 29:

	wiringPiSetup();		wiringPiSetup();
		+
		+	before doing any other operation.
		+
		+	If you want to use it for PWM output, in QT it's really unstable, at least for frequencies above 50Hz.