+ * Sometimes your cpu does not have a builtin
+ * i2c driver or you don't want, for some reason, to
+ * use that.
+ * With this you can choose, at compile time, which backend to use.
+ *
+ * $WIZARD_LIST = {
+ * "i2c_backend" : ["I2C_BACKEND_BUILTIN", "I2C_BACKEND_BITBANG"]
+ * }