Merge commit '1a3a83f33224876bfe5e8131542a8e124f4bc89b' as 'Sources/mbedTLS'

Sources/mbedTLS/yotta/data/example-hashing/README.md

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+# SHA-256 Hash Example
+
+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 you must have:
+
+* 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/).
+  * [The ARM GCC toolchain](https://launchpad.net/gcc-arm-embedded).
+  * A serial terminal emulator (Like screen, pySerial and cu).
+* An [FRDM-K64F](http://developer.mbed.org/platforms/FRDM-K64F/) development board, or another board supported by mbed OS (in which case you'll have to substitute frdm-k64f-gcc with the appropriate target in the instructions 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 "OpenSDA" connector on the target board.
+
+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. Build mbedtls and the examples. This may take a long time if this is your first compilation:
+
+    ```
+    $ yotta build
+    ```
+
+5. 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.
+
+6. Start the serial terminal emulator and connect to the virtual serial port presented by FRDM-K64F.
+
+    Use the following settings:
+
+    * 115200 baud (not 9600).
+    * 8N1.
+    * No flow control.
+
+7. Press the Reset button on the board.
+
+8. 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}}
+    ```