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@@ -5,9 +5,24 @@ This projet is a part of larger projet [_Communication Racinaire_](https://proje
 
 When a plant received the solar radiation, a **difference of potential** will be created inside the plant. This physical reaction interest us to **measure** it and **interpret** the signal to drive the robot. 
 
-![schema](https://git.cohabit.fr/pgp/Traitement-signal-plantes/src/branch/Data/chaien.PNG)
+![Diagram](https://git.cohabit.fr/pgp/Traitement-signal-plantes/src/branch/Data/chaien.PNG)
+
+On the diagram we can see a "**Pi**" symbole which represents the micro-controller who calculate and drive the robot, who will make the **C sources** work. After many hours of working or test phase the microcontroller create and store data interpretable by the **Python script**.
 
 ## Embedded C sources
+![Graphical representation](https://git.cohabit.fr/pgp/Traitement-signal-plantes/src/branch/Data/chaien.PNG)
 
+The scheme represents well the program operation on the raspberry, the diagram is read from left to right.
+
+**The first** represent the stream from vegetalsignal's captor through the USB port. This part block us because we don't have stream for now with the captor then we have create a thread to similate it. The stream send Raw data correspond to the electrique tension generated by the plant.
+
+**The second** part with the thread storeRawData catch the raw data and store it in the memory in several files.(Usable data for python script)
+
+
+**The third** part is used to gather data files and calculate to have pertinante data (Power or GrowthRate) and store it in file.
+
+
+**The fourth** is not yet done, the thread drive will recovers the power and/or the gorwthRate data recognize events in the data and drive the robot.
 ## Graphic visualization Python script
 
+The Python script is used to print the tension data on a graph.
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