Add material for generating yotta module
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+# Hashing tutorial
+
+This application performs hashing of a buffer with SHA-256 using various APIs. It serves as a tutorial for the basic hashing APIs of mbed TLS.
+
+## Pre-requisites
+
+To build and run this example the requirements below are necessary:
+
+* A computer with the following software installed:
+ * [CMake](http://www.cmake.org/download/).
+ * [yotta](https://github.com/ARMmbed/yotta). Please note that **yotta has its own set of dependencies**, listed in the [installation instructions](http://armmbed.github.io/yotta/#installing-on-windows).
+ * [Python](https://www.python.org/downloads/).
+ * [ARM GCC toolchain](https://launchpad.net/gcc-arm-embedded).
+ * A serial terminal emulator (e.g. screen, pySerial, cu).
+* An [FRDM-K64F](http://developer.mbed.org/platforms/FRDM-K64F/) development board, or another board supported by mbed OS (in that case you'll have to substitute frdm-k64f-gcc with the appropriate target below).
+* A micro-USB cable.
+* If your OS is Windows, please follow the installation instructions [for the serial port driver](https://developer.mbed.org/handbook/Windows-serial-configuration).
+
+## Getting started
+
+1. Connect the FRDM-K64F to the computer with the micro-USB cable, being careful to use the micro-usb port labeled "OpenSDA".
+
+2. Navigate to the mbedtls directory supplied with your release and open a terminal.
+
+3. Set the yotta target:
+
+ ```
+ yotta target frdm-k64f-gcc
+ ```
+
+4. Check that there are no missing dependencies:
+
+ ```
+ $ yt ls
+ ```
+
+ If there are, yotta will list them in the terminal. Please install them before proceeding.
+
+5. Build mbedtls and the examples. This will take a long time if it is the first time:
+
+ ```
+ $ yt build
+ ```
+
+6. Copy `build/frdm-k64f-gcc/test/mbedtls-test-example-hashing.bin` to your mbed board and wait until the LED next to the USB port stops blinking.
+
+7. Start the serial terminal emulator and connect to the virtual serial port presented by FRDM-K64F. For settings, use 9600 baud, 8N1, no flow control.
+
+8. Press the reset button on the board.
+
+9. The output in the terminal window should look like:
+
+ ```
+ {{timeout;10}}
+ {{host_test_name;default}}
+ {{description;mbed TLS example on hashing}}
+ {{test_id;MBEDTLS_EX_HASHING}}
+ {{start}}
+
+
+ Method 1: 315f5bdb76d078c43b8ac0064e4a0164612b1fce77c869345bfc94c75894edd3
+ Method 2: 315f5bdb76d078c43b8ac0064e4a0164612b1fce77c869345bfc94c75894edd3
+ Method 3: 315f5bdb76d078c43b8ac0064e4a0164612b1fce77c869345bfc94c75894edd3
+ Method 4: 315f5bdb76d078c43b8ac0064e4a0164612b1fce77c869345bfc94c75894edd3
+
+ DONE
+ {{success}}
+ {{end}}
+ ```