# Regular Meeting (2021.1.9)

* Solved [problem](https://hackmd.io/qKOyd_9FScCmjdIhv2pl2g) about xvc (last week)]
* Maybe board-files we don't need to install
* XVC:
* New problem: solved
* Some Critical Warnning
* Hardware: passed (Report for hw: next week)
* Next Step: software
* **1st use *tcl* to compile bigger project**
* I wish I can applied this experience to others project, e.g. UT4

## Solved problem about xvc (last week)

* Problem: can't find preset of processor system(ps)
* Tried to install board files for pynq (not valid)

* Solution

* step1: Finded preset files from [here](https://d2m32eurp10079.cloudfront.net/Download/pynq-z2_v1.0.xdc.zip), [content as here](https://github.com/curly-wei/xvc-pynq-z2/blob/main/src/hw/script/PYNQ-Z2.tcl)

* step2: Apply preset for ps(pynq-z2)
* Before modify:

    # zybo
    # bd_system.tcl 
    set_property -dict [ 
      list \
      CONFIG.PCW_USE_M_AXI_GP0 {1} \
      CONFIG.preset {Microzed*}  \
    ] 
    $processing_system7_0

* After modify:

    # pynq-z2
    # bd_system.tcl 
    set_property -dict [apply_preset] \
    $processing_system7_0

* step3: Marked ps preset file as necessary in my building script (tclsh)

  # top.tcl
  # Define script of bd-top file for ps
  set k_top_bd_script_file "${k_script_src_dir}/bd_system.tcl"
  ...
  ...
  ...
  if { [ file exists ${k_top_bd_script_file} ] == 1 } {
      puts "INFO: read-in files for top bd: ${k_top_bd_script_file}"
      source ${k_top_bd_script_file}
      update_compile_order -fileset ".srcs/sources_1"
    } else {
      error "ERROR: read-in files for ps preset: < ${k_top_bd_script_file} > fail. This file is necessary, please check again"
  }

## New problem about XVC


Solution:

1. Compare with 2 xvc blocks
* zybo
* 
* pynq-z2
* 

2. I guess that maybe problem caused by **ps-preset-file**
* zybo
* 
* pynq-z2
* 

## Some Critical Warnning

### Critical warnning

1. DDR
[Discussion here](https://forums.xilinx.com/t5/Design-Entry/Vivado-critical-warning-when-creating-hardware-wrapper/td-p/762938)

2. Read-Only
[Discussion here](https://forums.xilinx.com/t5/AI-and-Vitis-AI/PYNQ-Z2-Board-Problems-with-hardware-rebuild-of-BNN-PYNQ-git/td-p/1024362)

###### tags: `Regular Meeting` `DeWei`