# My ip of tutorial of hls\_m\_axi\_example doesn't work

**URL:** <https://discuss.pynq.io/t/my-ip-of-tutorial-of-hls-m-axi-example-doesnt-work/6452>\
**Category:** Support\
**Created:** [December 18, 2023, 10:11am UTC](https://discuss.pynq.io/t/my-ip-of-tutorial-of-hls-m-axi-example-doesnt-work/6452 "2023-12-18T10:11:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![wawaji0327](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/wawaji0327/32/5460_2.png) [@wawaji0327](https://discuss.pynq.io/u/wawaji0327)\
**Post date:** [December 18, 2023, 10:11am UTC](https://discuss.pynq.io/t/my-ip-of-tutorial-of-hls-m-axi-example-doesnt-work/6452/1 "2023-12-18T10:11:35Z")

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I used pynq-z2(vivado 2018.3 and vivado hls 2018.3) and try the tutorial [PYNQ\_tutorials/hls\_m\_axi at master · cathalmccabe/PYNQ\_tutorials (github.com)](https://github.com/cathalmccabe/PYNQ_tutorials/tree/master/hls_m_axi)on the board.  
I followed every step of the tutorial ,but it seems like the ip doesn’t work.The same matter happened on my pynq-zu board.So I wonder is there any step of mine went wrong?  
I hope somebody can help me.  
source code:

 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/9/923bd816cc5040f88d3dc583557bd8fe112d7220.png)  
block design:  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/f/f6df15263db07fec51b7ea1385e44cff5bfc15c7.png)  
overlay:  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/4/4c0dee8190d01a2f701782e8e53432422be76da4.png)  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/4/4e0f58e7e9decc43ba61039b25bb39b79cbcb670.png)  
I notice the AP\_DONE is always 1.It make me confused.

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**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\
**Post date:** [December 18, 2023, 2:07pm UTC](https://discuss.pynq.io/t/my-ip-of-tutorial-of-hls-m-axi-example-doesnt-work/6452/2 "2023-12-18T14:07:49Z")

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H @wawaji0327,

You are starting the IP before you set up the buffer address, try running the code in cell 7 after the code in cell 8.

Mario