#264 adjust unit test and fix is40pin

gpio/gpio.c

@@ -972,7 +972,7 @@ static void doVersion (char *argv [])
 
 static void doIs40Pin ()
 {
-  exit(piBoard40Pin());
+  exit(piBoard40Pin() ? EXIT_SUCCESS : EXIT_FAILURE);
 }
 
 /*

gpio/test/gpio_test6_wfi.sh

@@ -110,11 +110,15 @@ wfis_test() {
     fi
 }
 
+gpio is40pin || { GPIOIN=17; GPIOOUT=18; echo "old 28 pin system"; }
+
+
 echo 
 echo Unit test gpio GPIO${GPIOOUT} and GPIO${GPIOIN} - functions: mode, write, wfi
 echo ------------------------------------------------------------------
 echo 
 
+
 #prepare trigger out
 gpio -g mode $GPIOOUT out