PYNQ: PYTHON PRODUCTIVITY FOR ZYNQ

Error message when tried to use MicroblazeLibrary

#1

Hi, I’m not using pynq for about 2 months, and today when I tried to execute some programs I got the message below.
The overlay is the same as base overlay, the difference is that the SPI is slave.
There is another thing, I have always opened .py files on pynq’s jupyter notebook, today it opens a new empty blank tab (google chrome).

Error message:

RuntimeError                              Traceback (most recent call last)
<ipython-input-1-0ca9f4277a4d> in <module>()
  4 from pynq.lib import MicroblazeLibrary
  5 import time
----> 6 lib = MicroblazeLibrary(base.iop_arduino, ['gpio'])
  7 
  8 pulse_unit = lib.gpio_open(7)

/usr/local/lib/python3.6/dist-packages/pynq/lib/pynqmicroblaze/rpc.py in __init__(self, iop, libraries)
885         source_text = "\n".join(['#include <{}.h>'.format(lib)
886                                  for lib in libraries])
--> 887         super().__init__(iop, source_text)

/usr/local/lib/python3.6/dist-packages/pynq/lib/pynqmicroblaze/rpc.py in __init__(self, iop, program_text)
807                                          visitor.functions.keys())
808         typedef_classes = _create_typedef_classes(visitor.typedefs)
--> 809         self._mb = MicroblazeProgram(iop, main_text)
810         self._rpc_stream = InterruptMBStream(
811             self._mb, read_offset=0xFC00, write_offset=0xF800)

/usr/local/lib/python3.6/dist-packages/pynq/lib/pynqmicroblaze/compile.py in __init__(self, mb_info, program_text, bsp)
150             result = run(args + files + lib_args, stdout=PIPE, stderr=PIPE)
151             if result.returncode:
--> 152                 raise RuntimeError(result.stderr.decode())
153             _ = run(['size', path.join(tempdir, 'a.out')],
154                     stdout=PIPE, stderr=PIPE)

RuntimeError: cc1plus: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Pynq z1 Image v2.4
Boot from SD card, I turned pynq on, pluged the ethernet cable on my pc and tried to execute the program:

from pynq import Overlay
base = Overlay("new_base_2.bit")

from pynq.lib import MicroblazeLibrary
import time
lib = MicroblazeLibrary(base.iop_arduino, ['gpio'])

pulse_unit = lib.gpio_open(7)
lib.gpio_set_direction(pulse_unit,lib.GPIO_OUT)
#2

That is interesting. Especially since, as you mention (if I understood correctly), it seems this issue popped out of nowhere with code that was working previously.

First thing is: would you be willing to try and use the recetly released v2.5 and see if you get the same behavior?
You can grab it here

#3

Also, for .py files, I’d reccommend using jupyter lab instead of notebook.
When you are on jupyter notebook, just change your browser address to
<ip_address>/lab
It should allow you to edit .py files and is by all means a more complete IDE, which I bet is what you are looking for.

#4

Hi,

Thank you for the tip about python’s IDE. About the error that I got it was solved after I rewrite the SD card, I think it was corrupted.

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