diff --git a/wiringPi/test/wiringpi_test1_device.c b/wiringPi/test/wiringpi_test1_device.c
new file mode 100644
index 0000000..e8d6ce1
--- /dev/null
+++ b/wiringPi/test/wiringpi_test1_device.c
@@ -0,0 +1,83 @@
+// WiringPi test program: Kernel char device interface / sysfs successor
+// Compile: gcc -Wall wiringpi_test1_device.c -o wiringpi_test1_device -lwiringPi
+
+#include <wiringPi.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <time.h>
+#include <sys/time.h>
+
+
+//const int GPIO = 24;  //LED
+const int GPIO = 19;
+const int GPIOIN = 26;
+const int  ToggleValue = 4;
+
+void CheckGPIO(int out) {
+	int in  = digitalRead(GPIOIN);
+	int read = digitalRead(GPIO);
+
+	int pass = 0;
+	if (out==in && in==read) {
+		pass = 1;
+	}
+	printf("GPIO%d = %d (GPIO%d = %d)  -> %s\n", GPIOIN, in, GPIO, read, pass ? "passed":"failed" );
+}
+
+void digitalWriteEx(int pin, int mode) {
+	digitalWrite(pin, mode);
+	printf("out = %d   ", mode);
+	delayMicroseconds(5000);
+	CheckGPIO(mode);
+}
+
+void pullUpDnControlEx (int pin ,int mode) {
+	pullUpDnControl (pin, mode);
+	int out  = mode==PUD_UP ? 1:0;
+	printf("in = %4s   ", mode==PUD_UP ? "up":"down");
+	delayMicroseconds(5000);
+	CheckGPIO(out);
+}
+
+int main (void) {
+
+	printf("WiringPi GPIO test program (using GPIO%d (output) and GPIO%d (input) via sys)\n", GPIO, GPIOIN);
+
+	if (wiringPiSetupSys()  == -1) {
+		printf("wiringPiSetupGpioDevice failed\n\n");
+		exit(EXIT_FAILURE);
+	}
+	pinMode(GPIOIN, INPUT);
+	pinMode(GPIO, OUTPUT);
+
+	printf("toggle %d times ...\n", ToggleValue);
+	for (int loop=1; loop<ToggleValue; loop++) {
+		digitalWriteEx(GPIO, LOW);
+		delayMicroseconds(600000);
+		digitalWriteEx(GPIO, HIGH);
+		delayMicroseconds(600000);
+	}
+
+	digitalWrite(GPIO, LOW);
+
+	printf("\nWiringPi GPIO test program (using GPIO%d (input pull up/down) and GPIO%d (input) via sys)\n", GPIO, GPIOIN);
+	pullUpDnControl (GPIO, PUD_UP);
+	pinMode(GPIO, INPUT);
+	delayMicroseconds(3000000);
+	pullUpDnControl (GPIOIN, PUD_OFF);
+
+        for (int loop=1; loop<ToggleValue; loop++) {
+		pullUpDnControlEx (GPIO, PUD_DOWN);
+		delayMicroseconds(600000);
+		pullUpDnControlEx (GPIO, PUD_UP);
+		delayMicroseconds(600000);
+        }
+
+	//Error wrong direction - only for fun
+	digitalWrite(GPIO, LOW);
+
+	return(EXIT_SUCCESS);
+}
+