Hello,
DMA is encapsulated in a module in BD in Vivado, as shown in the figure below:
How do I access this DMA in PYNQ2.5? I tried the following, but the following error was reported without success
Firstly, I tried zmod_adc0 = zmod_adc1410.ZmodADC_0/axi_dma_0
zmod_adc0 = zmod_adc1410.ZmodADC_0/axi_dma_0
NameError Traceback (most recent call last)
<ipython-input-33-6a53782c002e> in <module>()
----> 1 zmod_adc0 = zmod_adc1410.ZmodADC_0/axi_dma_0
NameError: name 'axi_dma_0' is not defined
Secondly, I tried zmod_adc0 = zmod_adc1410.ZmodADC_0.axi_dma_0
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
<ipython-input-34-f990120a1269> in <module>()
----> 1 zmod_adc0 = zmod_adc1410.ZmodADC_0.axi_dma_0
/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)
175 """
176 self.name = name
--> 177 self.mmio = MMIO(PL.ip_dict[name]['phys_addr'], 32)
178 self.wait_handles = [[] for _ in range(32)]
179 self.event_number = 0
KeyError: ''
Thank you very much. 
