Update FPGA_info4_2020_2021.md 08/02

FPGA_info4_2020_2021.md

@@ -28,3 +28,13 @@ The different challenges would be to code a [Perceptron][1] in Python, then to t
 [4]: https://github.com/RobertBaruch/nmigen-tutorial          "nmigen"
 
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+### Week 3 (08/02/2021) :
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+---
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+* This week was dedicated for learning more informations about Nmigen. We analysed the code for a perceptron from last year's project and managed to understand the most part but couldn't simulate it through Nmigen.
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+* We also started to write a tutorial on how to learn and use Nmigen, which will be completed as we learn new features that could help with this project.
+
+---