The fpga-gzip-compressor's discuss from wangxuan95

CRC32 in simulation

Hello, may I ask what is the polynomial of CRC32? I couldn't find it through Google search, and I tried using IEEE802 but failed. Meanwhile, I don't quite understand the meaning of your coding in fun calculate_crc, which is quite different from what I saw online. Can you briefly explain how coding work, or are there any similar blogs that can be recommended? Thank you very much for your help.

C example not the python example

Dear Wang:

I am harry who always focus on your project about FPGA. And I wonder if I can use the C/C++ example not python when u run the test program on my laptop?

串口未找到出错

您好，我按照 readme 里面的步骤把工程新建好了，在跑 python 文件的时候发现了下面的报错

original data length = 524288 bytes
  0.  ttyS0  hwid=PNP0501
  1.  CP2108 Quad USB to UART Bridge Controller - CP2108 Interface 3  hwid=USB VID:PID=10C4:EA71 SER=40514E02D54EB08011E72A9E738F7EB LOCATION=1-4:1.3
  2.  CP2108 Quad USB to UART Bridge Controller - CP2108 Interface 2  hwid=USB VID:PID=10C4:EA71 SER=40514E02D54EB08011E72A9E738F7EB LOCATION=1-4:1.2
  3.  CP2108 Quad USB to UART Bridge Controller - CP2108 Interface 1  hwid=USB VID:PID=10C4:EA71 SER=40514E02D54EB08011E72A9E738F7EB LOCATION=1-4:1.1
  4.  CP2108 Quad USB to UART Bridge Controller - CP2108 Interface 0  hwid=USB VID:PID=10C4:EA71 SER=40514E02D54EB08011E72A9E738F7EB LOCATION=1-4:1.0
Please select a port (enter a number): 2
Traceback (most recent call last):
  File "/root/.local/lib/python3.10/site-packages/serial/serialposix.py", line 322, in open
    self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
FileNotFoundError: [Errno 2] No such file or directory: 'ttyUSB2'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/zchliu/work/FPGA-Gzip-compressor/Arty-example/python/fpga_uart_gz.py", line 127, in <module>
    gz_data, err_msg = GzipCompressUsePort(port_name, orig_data)
  File "/home/zchliu/work/FPGA-Gzip-compressor/Arty-example/python/fpga_uart_gz.py", line 53, in GzipCompressUsePort
    port = Serial(port_name, baudrate=115200, timeout=1.0)
  File "/root/.local/lib/python3.10/site-packages/serial/serialutil.py", line 244, in __init__
    self.open()
  File "/root/.local/lib/python3.10/site-packages/serial/serialposix.py", line 325, in open
    raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
serial.serialutil.SerialException: [Errno 2] could not open port ttyUSB2: [Errno 2] No such file or directory: 'ttyUSB2'

这看起来像是 serial 没有找到对应的文件目录导致的，我按照网上的解决办法，将 port 改成了本地目录以后跑通了

port = Serial("/dev/serial/by-id/usb-Silicon_Labs_CP2108_Quad_USB_to_UART_Bridge_Controller_40514E02D54EB08011E72A9E738F7EB-if02-port0", baudrate=115200, timeout=1.0)
    # try :
    #     port = Serial(port_name, baudrate=115200, timeout=1.0)
    # except :
    #     return None, '**error: Unable to open port %s' % port_name

但是，这似乎和程序查找串口然后再选择的功能不太一致，想问一下您有遇到这个问题吗？以及如何解决的呢？

系统：ubuntu 22.04
vivado：2022.2
开发板：zcu102

Decompressor for Gzip using FPGA？

do you have the respond decompressor for gzip using fpga? it can decompress the output of your code. Thanks.

Is the input data width scalable？

From the code, the input data width is one byte now, can it be scalable to 8 bytes?

wangxuan95 / fpga-gzip-compressor Goto Github PK

fpga-gzip-compressor's Issues

CRC32 in simulation

C example not the python example

串口未找到出错

Decompressor for Gzip using FPGA？

Is the input data width scalable？

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