How to Show Posts of Custom Post Types on WordPress Home Page?

How to Show Posts of Custom Post Types on WordPress Home Page?

if ( ! function_exists( 'pinboard_filter_query' ) ) :
/**
 * Filter the main loop
 *
 * Allows overriding of query parameters
 * for the main loop without performing
 * additional database queries
 *
 * @since Pinboard 1.0
 */
function pinboard_filter_query( $query ) {
	global $wp_the_query;
	if( $wp_the_query === $query ) {
		if( $query->is_home() && pinboard_get_option( 'slider' ) )
			$query->set( 'ignore_sticky_posts', 1 );
		if( $query->is_home() && pinboard_get_option( 'blog_exclude_portfolio' ) )
			$query->set( 'cat', '-' . pinboard_get_option( 'portfolio_cat' ) );
	}
}
endif;

add_action( 'pre_get_posts', 'pinboard_filter_query' );