# Pad block in ieee802\_15\_4\_mac block

**URL:** <https://www.ruby-forum.com/t/pad-block-in-ieee802-15-4-mac-block/240017>\
**Category:** GNU Radio\
**Created:** [March 24, 2014, 10:14pm UTC](https://www.ruby-forum.com/t/pad-block-in-ieee802-15-4-mac-block/240017 "2014-03-24T22:14:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [March 24, 2014, 10:14pm UTC](https://www.ruby-forum.com/t/pad-block-in-ieee802-15-4-mac-block/240017/1 "2014-03-24T22:14:05Z")

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Hello GR,

How can I have a file source connected as a pad source to an  
hierarchical  
block ?  
More precisely, I have for example the hierarchical block  
ieee802\_15\_4\_mac,  
and instead of feeding the block in input with a socket pdu block I want  
to  
connect it to a file source and broadcast a word,

#self.msg\_connect(self.gr\_socket\_pdu\_0, “pdus”, self.ieee802\_15\_4\_mac\_0,  
“app in”) # this is OK  
self.msg\_connect(self.blocks\_file\_source\_0, “source” ,  
self.ieee802\_15\_4\_mac\_0, “app in”) #this is not OK

Regards,

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