Example application demonstrating Memory stats API and debug functions

Fork of mbed-os-example-platform-utils by Senthil Ramakrishnan

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0:2ab002d36417
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+# mbed-os-example-platform-utils #
+
+Platform Utilities usage example for mbed OS
+
+This is a example showing how to use mbed-OS Debug and MemoryStats utility functions
+
+The program retrieves stack and heap usage and also demonstrates the usage of Debug APIs.
+
+### Suggested hardware for running this example ###
+
+* [K64F](https://os.mbed.com/platforms/FRDM-K64F/)
+
+##  Getting started
+
+1. Import the example
+
+   ```
+   mbed import mbed-os-example-platform-utils
+   cd mbed-os-example-platform-utils
+   ```
+2. Compile and generate binary
+
+   For example, for `ARMCC`:
+
+   ```
+   mbed compile -t arm -m k64f -DMBED_STACK_STATS_ENABLED -DMBED_HEAP_STATS_ENABLED -DMBED_MEM_TRACING_ENABLED
+   ```
+   
+   NOTE: Make sure you define the following variables:
+   MBED_STACK_STATS_ENABLED 
+   MBED_HEAP_STATS_ENABLED 
+   MBED_MEM_TRACING_ENABLED
+   
+ 5. Open a serial console session with the target platform using the following parameters:
+    * **Baud rate:** 9600
+    * **Data bits:** 8
+    * **Stop bits:** 1
+    * **Parity:** None
+ 
+ 6. Copy or drag the application `mbed-os-example-platform-utils.bin` in the folder `mbed-os-example-platform-utils/BUILD/<TARGET NAME>/<PLATFORM NAME>` onto the target board.
+ 
+ 7. The serial console should display a similar output to below:
+ ```
+This message is from debug function
+This message is from debug_if
+MemoryStats:
+        Bytes allocated currently: 80
+        Max bytes allocated at a given time: 80
+        Cumulative sum of bytes ever allocated: 80
+        Current number of bytes allocated for the heap: 186884
+        Current number of allocations: 2
+        Number of failed allocations: 0
+Cumulative Stack Info:
+        Maximum number of bytes used on the stack: 560
+        Current number of bytes allocated for the stack: 5376
+        Number of stacks stats accumulated in the structure: 3
+Thread Stack Info:
+        Thread: 0
+                Thread Id: 0x20001EE8
+                Thread Name: "main_thread"
+                Maximum number of bytes used on the stack: 384
+                Current number of bytes allocated for the stack: 4096
+                Number of stacks stats accumulated in the structure: 1
+        Thread: 1
+                Thread Id: 0x20000394
+                Thread Name: ""
+                Maximum number of bytes used on the stack: 64
+                Current number of bytes allocated for the stack: 512
+                Number of stacks stats accumulated in the structure: 1
+        Thread: 2
+                Thread Id: 0x200003DC
+                Thread Name: ""
+                Maximum number of bytes used on the stack: 112
+                Current number of bytes allocated for the stack: 768
+                Number of stacks stats accumulated in the structure: 1
+Done...
+
+ ```
+
+## Documentation ##
+
+More information on the MemoryStats and Debug API can be found in the [mbed handbook]().