add_sensor_node
err = add_sensor_node(childh, 0, buf,
static int add_sensor_node(picl_nodehdl_t fruhdl, picl_nodehdl_t lochdl,
err = add_sensor_node(0, nodeh, buf, PICL_CLASS_LED,
err = add_sensor_node(nodeh, 0, buf, PICL_CLASS_LED,