Can not get shortcode content in function

Question

I use a shortcode on my page like

[homepage_featuredproducts]test[/homepage_featuredproducts]

In my functions.php

function homepage_featuredproducts( $atts , $content = null ) {
  if('{{emtpy}}'!=$content) $content='empty';
  return $content;

}
add_shortcode( 'homepage_featuredproducts', 'homepage_featuredproducts' );

And in my template somewhere

<p><?php echo do_shortcode( '[homepage_featuredproducts]' ) ?></p>

And it allways returns "empty".

Why cant I get the content between the shortcodes in my function and return it?

Answer 1

function homepage_featuredproducts( $atts , $content = null ) {
  if( empty( $content ) ) 
     $content='no content to display';

  return $content;

}
add_shortcode( 'homepage_featuredproducts', 'homepage_featuredproducts' );