# Guidance on using VDMA interrupt **URL:** \ **Category:** Support\ **Created:** [December 12, 2019, 7:23pm UTC](https://discuss.pynq.io/t/guidance-on-using-vdma-interrupt/755 "2019-12-12T19:23:51Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![bsi](https://avatars.discourse-cdn.com/v4/letter/b/f08c70/32.png) [@bsi](https://discuss.pynq.io/u/bsi)\ **Post date:** [December 12, 2019, 7:23pm UTC](https://discuss.pynq.io/t/guidance-on-using-vdma-interrupt/755/1 "2019-12-12T19:23:51Z")
Hi, I am working on a ISP design (Zynq Ultrascale+ SoC) . I have multiple VDMA in my design in PL and I have connected their interrupt to Zynq PS pl\_ps\_irq port. I am getting errors. I am new to PYNQ and hope someone from the community can guide me on how to handle VDMA interrupts in PYNQ Thanks ---
**Author:** ![patocarr](https://avatars.discourse-cdn.com/v4/letter/p/d2c977/32.png) [@patocarr](https://discuss.pynq.io/u/patocarr)\ **Post date:** [December 12, 2019, 9:30pm UTC](https://discuss.pynq.io/t/guidance-on-using-vdma-interrupt/755/2 "2019-12-12T21:30:58Z")
@bsi It’s not clear from your message what kind of errors you’re getting, from either Vivado synthesis, implementation, or IPI validation. As a guide, you’d add those ports to the block design individually (Create interface port in IPI) and tag them as interrupt type ([xilinx.com](http://xilinx.com):signal:interrupt\_rtl). Then inside the block design, you’d concatenate them using xil\_concat IP and the output goes to the Zynq PS pl\_ps\_irq port. Thanks, -Pat ---
**Author:** ![bsi](https://avatars.discourse-cdn.com/v4/letter/b/f08c70/32.png) [@bsi](https://discuss.pynq.io/u/bsi)\ **Post date:** [December 19, 2019, 11:52pm UTC](https://discuss.pynq.io/t/guidance-on-using-vdma-interrupt/755/3 "2019-12-19T23:52:58Z")
## Hi, Thanks for your reply. I am not facing any issue with generating bit file generation. It is when i start using pynq framework and accessing vdma, i get following error ValueError Traceback (most recent call last) in () 2 dft = overlay.dft\_subsyst.custom\_dft 3 #vdma\_csi2 = overlay.csi2\_raw\_subsyst.axi\_vdma\_0 ----\> 4 vdma\_h0 = overlay.vdma\_h0 5 vdma\_h1 = overlay.vdma\_h1 6 intc = overlay.axi\_intc /usr/local/lib/python3.6/dist-packages/pynq/overlay.py in **getattr** (self, key) 325 “”" 326 if self.is\_loaded(): → 327 return getattr(self.\_ip\_map, key) 328 else: 329 raise RuntimeError(“Overlay not currently loaded”) /usr/local/lib/python3.6/dist-packages/pynq/overlay.py in **getattr** (self, key) 583 elif key in self.\_description[‘ip’]: 584 ipdescription = self.\_description[‘ip’][key] → 585 driver = ipdescription’driver’ 586 setattr(self, key, driver) 587 return driver /usr/local/lib/python3.6/dist-packages/pynq/lib/video/dma.py in **init** (self, description, framecount) 590 591 “”" → 592 super(). **init** (description) 593 self.framecount = framecount 594 self.readchannel = AxiVDMA.S2MMChannel(self, self.s2mm\_introut) /usr/local/lib/python3.6/dist-packages/pynq/overlay.py in **init** (self, description) 515 self.\_gpio = {} 516 for interrupt, details in self.\_interrupts.items(): → 517 setattr(self, interrupt, Interrupt(details[‘fullpath’])) 518 for gpio, entry in self.\_gpio.items(): 519 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 0