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Newbie iihihiuh
Newbie
581 Views
Registered: ‎04-14-2018

A key error when I am trying to access a DMA IP on PYNQ Z1 board

I am trying to build DMA interface between a accelerator and ZYNQ processor (PYNQ z1 board). After I loaded bit file to PYNQ on notebook and tried to access DMA IP, this  key error came up. Error messages are in the link below

from pynq import Overlay    
overlay = Overlay("block1_wrapper.bit")
overlay.axi_dma_0

enter image description here I do not know what causes this error (AXI_LTE ip seems to be fine).

Does anyone know how to resolve this issue?? 

SSSSSS.PNG

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Visitor sdu_liuke
Visitor
206 Views
Registered: ‎03-20-2017

Re: A key error when I am trying to access a DMA IP on PYNQ Z1 board

The problem is something about the utilization of "Interrupt" .  To tackle this problem, there are two ways:

1 . Modify your circuits to remove the  pins  of "interrupt".

2. Insert one additional ip "axi interrupt controller" between the interrupt pins your IPs ( dma, concat  and so on) and the "IRQ_F2P_[x:0]", as is shown below.PYNQint.jpg

 

 

 

Have fun with PYNQ!

Have fun with FPGA