# Eclypse Z7: Could not find UIO device for interrupt pin **URL:** \ **Category:** Support\ **Created:** [April 11, 2024, 8:30pm UTC](https://discuss.pynq.io/t/eclypse-z7-could-not-find-uio-device-for-interrupt-pin/6915 "2024-04-11T20:30:00Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![dmangione](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/dmangione/32/5797_2.png) [@dmangione](https://discuss.pynq.io/u/dmangione)\ **Post date:** [April 11, 2024, 8:30pm UTC](https://discuss.pynq.io/t/eclypse-z7-could-not-find-uio-device-for-interrupt-pin/6915/1 "2024-04-11T20:30:00Z")
Hello, I am using a Digilent Eclypse Z7 running PYNQ v2.6. I created the PYNQ image and device tree overlay using this tutorial: [Eclypse-Z7 PYNQ porting guide - Hackster.io](https://www.hackster.io/bartosz-rycko/eclypse-z7-pynq-porting-guide-3dd24c#toc-building-pynq-1) I am trying to control my ADC and DAC Zmods via the axi dmas. Currently I have this code: ```auto import pynq from pynq import Overlay import os ol = Overlay("/home/xilinx/jupyter_notebooks/BE/design_1.bit") ol.download(dtbo="/home/xilinx/jupyter_notebooks/BE/pl.dtbo") ol.ip_dict.keys() ``` ```auto dict_keys(['ZmodADC_0/axi_dma_0', 'ZmodDAC_0/axi_dma_1', 'axi_intc_0', 'axi_intc_1', 'axi_intc_2', 'ZmodADC_0/AXI_ZmodADC1410_1', 'ZmodDAC_0/AXI_ZmodDAC1411_v1_0_0']) ``` When I attempt to call the axi\_dma\_1 (or axi\_dma\_0 in the case of the ZmodADC), I am getting the following error: ```auto ol.ZmodDAC_0.axi_dma_1 ``` ```auto --------------------------------------------------------------------------- ValueError Traceback (most recent call last) in () ----> 1 ol.ZmodDAC_0.axi_dma_1 /usr/local/lib/python3.6/dist-packages/pynq/overlay.py in __getattr__ (self, key) 735 elif key in self._description['ip']: 736 ipdescription = self._description['ip'][key] --> 737 driver = ipdescription['driver'](ipdescription) 738 setattr(self, key, driver) 739 return driver /usr/local/lib/python3.6/dist-packages/pynq/lib/dma.py in __init__ (self, description, *args, **kwargs) 188 'has been deprecated and moved to ' 189 'pynq.lib.deprecated') --> 190 super(). __init__ (description=description) 191 192 if 'parameters' in description and \ /usr/local/lib/python3.6/dist-packages/pynq/overlay.py in __init__ (self, description) 600 self._gpio = {} 601 for interrupt, details in self._interrupts.items(): --> 602 setattr(self, interrupt, Interrupt(details['fullpath'])) 603 for gpio, entry in self._gpio.items(): 604 gpio_number = GPIO.get_gpio_pin(entry['index']) /usr/local/lib/python3.6/dist-packages/pynq/interrupt.py in __init__ (self, pinname) 96 self.number = PL.interrupt_pins[pinname]['index'] 97 self.parent = weakref.ref( ---> 98 _InterruptController.get_controller(parentname)) 99 self.event = asyncio.Event() 100 self.waiting = False /usr/local/lib/python3.6/dist-packages/pynq/interrupt.py in get_controller(name) 157 if con.name == name: 158 return con --> 159 ret = _InterruptController(name) 160 _InterruptController._controllers.append(ret) 161 return ret /usr/local/lib/python3.6/dist-packages/pynq/interrupt.py in __init__ (self, name) 189 if uiodev is None: 190 raise ValueError('Could not find UIO device for interrupt pin ' --> 191 'for IRQ number {}'.format(number)) 192 self.parent = UioController(uiodev) 193 self.number = 0 ValueError: Could not find UIO device for interrupt pin for IRQ number 2 ``` Previously, I had encountered ValueError: ‘’, which I solved using the solution from this post: [How to access the DMA in the module - #2 by sazc](https://discuss.pynq.io/t/how-to-access-the-dma-in-the-module/1769/2) So far, I have attempted a few things that were suggested in other posts. This post ([Uio device - #2 by PeterOgden](https://discuss.pynq.io/t/uio-device/1801/2)) suggested a few reasons but my build has everything correct. I have also tried to recompile pl.dtbo with FPGA manager as the end of the [Hackster.io](http://Hackster.io) guide suggested disabling runtime reconfiguration as a possible fix. Lastly, I have tried the fixes mentioned in this post: [Build PYNQ OS for ZCU102 with Yocto - #21 by PeterOgden](https://discuss.pynq.io/t/build-pynq-os-for-zcu102-with-yocto/2537/21). As a note, when I try and call ol.ZmodADC\_0.axi\_dma\_0, I get the same error for interrupt pin for IRQ number 1. ---
**Author:** ![dmangione](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/dmangione/32/5797_2.png) [@dmangione](https://discuss.pynq.io/u/dmangione)\ **Post date:** [April 16, 2024, 9:42pm UTC](https://discuss.pynq.io/t/eclypse-z7-could-not-find-uio-device-for-interrupt-pin/6915/2 "2024-04-16T21:42:46Z")
Bumping this