+static void checkDevTree (char *argv [])
+{
+ struct stat statBuf ;
+
+ if (stat ("/proc/device-tree", &statBuf) == 0) // We're on a devtree system ...
+ {
+ fprintf (stderr,
+"%s: Unable to load/unload modules as this Pi has the device tree enabled.\n"
+" You need to run the raspi-config program (as root) and select the\n"
+" modules (SPI or I2C) that you wish to load/unload there and reboot.\n"
+" There is more information here:\n"
+" https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=97314\n", argv [0]) ;
+ exit (1) ;
+ }
+}
+