update lab2 readme

lab_files/lab_2/README.md

@@ -23,4 +23,26 @@
 
 - [Sensor Breakout Board](https://www.reichelt.de/entwicklerboards-temperatur-und-drucksensor-bmp280-debo-bmp280-p266034.html?&nbc=1&trstct=lsbght_sldr::266078)
 
-  
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+  
+
+## SD Card Data Logging
+
+- Copy the **`mbed_app.json`** file to you program, which contains SPI configuration for the connected SD card module
+
+- Make sure to enable the **storage** feature of Mbed OS by commenting in **`.mbedignore`** (or copy the provided updated file):
+
+  ~~~
+  /* Storage */
+  //mbed-os/storage/filesystem/*
+  //mbed-os/storage/kvstore/*
+  //mbed-os/storage/platform/*
+  ~~~
+
+  
+
+**Further Resources:**
+
+- [SDBlockDevice](https://os.mbed.com/docs/mbed-os/v6.15/apis/sdblockdevice.html)
+
+- [FATFileSystem](https://os.mbed.com/docs/mbed-os/v6.15/apis/fatfilesystem.html)
+

lab_files/lab_3/README.md

-### Data Logger
-
-- [SDBlockDevice](https://os.mbed.com/docs/mbed-os/v6.15/apis/sdblockdevice.html)
-
-- [FATFileSystem](https://os.mbed.com/docs/mbed-os/v6.15/apis/fatfilesystem.html)
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