Update documentation.

docs/Command_line_config.md

@@ -0,0 +1,93 @@
+# Arduino command line and platformio config options  
+
+`CONFIG_BT_NIMBLE_ROLE_CENTRAL_DISABLED`  
+ 
+ If defined, NimBLE Client functions will not be included.  
+- Reduces flash size by approx. 7kB.  
+<br>
+
+`CONFIG_BT_NIMBLE_ROLE_OBSERVER_DISABLED`    
+
+If defined, NimBLE Scan functions will not be included.  
+- Reduces flash size by approx. 26kB.  
+<br>
+
+`CONFIG_BT_NIMBLE_ROLE_PERIPHERAL_DISABLED`   
+
+If defined NimBLE Server functions will not be included.  
+- Reduces flash size by approx. 16kB.  
+<br>
+
+`CONFIG_BT_NIMBLE_ROLE_BROADCASTER_DISABLED`    
+
+If defined, NimBLE Advertising functions will not be included.  
+- Reduces flash size by approx. 5kB.  
+<br>
+
+`CONFIG_BT_NIMBLE_DEBUG`   
+
+If defined, enables debug log messages from the NimBLE host  
+- Uses approx. 32kB of flash memory.  
+<br> 
+
+`CONFIG_NIMBLE_CPP_ENABLE_RETURN_CODE_TEXT`  
+
+If defined, NimBLE host return codes will be printed as text in debug log messages.  
+- Uses approx. 7kB of flash memory.  
+<br>  
+
+`CONFIG_NIMBLE_CPP_ENABLE_GAP_EVENT_CODE_TEXT`  
+
+If defined, GAP event codes will be printed as text in debug log messages.  
+- Uses approx. 1kB of flash memory.  
+<br>
+
+`CONFIG_NIMBLE_CPP_ENABLE_ADVERTISMENT_TYPE_TEXT`  
+
+If defined, advertisment types will be printed as text while scanning in debug log messages.  
+- Uses approx. 250 bytes of flash memory.  
+<br>  
+
+`CONFIG_BT_NIMBLE_PINNED_TO_CORE`  
+
+Sets the core the NimBLE host stack will run on   
+- Options: 0 or 1
+<br>
+
+`CONFIG_BT_NIMBLE_TASK_STACK_SIZE`  
+
+Set the task stack size for the NimBLE core.
+- Default is 4096  
+<br>
+
+
+`CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_EXTERNAL`
+
+Sets the NimBLE stack to use external PSRAM will be loaded  
+- Must be defined with a value of 1; Default is CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_INTERNAL 1  
+<br>
+
+`CONFIG_BT_NIMBLE_MAX_CONNECTIONS`
+
+Sets the number of simultaneous connections (esp controller max is 9)  
+- Default value is 3  
+<br>
+ 
+`CONFIG_BT_NIMBLE_MAX_BONDS`
+
+Sets the number of devices allowed to store/bond with  
+- Default value is 3  
+<br>
+
+`CONFIG_BT_NIMBLE_MAX_CCCDS` 
+
+Sets the maximum number of CCCD subscriptions to store  
+- Default value is 8  
+<br>
+ 
+`CONFIG_BT_NIMBLE_SVC_GAP_DEVICE_NAME`  
+
+Set the default device name  
+- Default value is "nimble"  
+<br>
+

docs/index.md

@@ -50,29 +50,18 @@ If you are familiar with the original library, see: [The migration guide](Migrat
 
 Also see [Improvements_and_updates](Improvements_and_updates.md) for information about non-breaking changes.  
 
-### Arduino specific:
+### Arduino specific
 See the Refactored_original_examples in the examples folder for highlights of the differences with the original library.  
 
 More advanced examples highlighting many available features are in examples/NimBLE_Server, NimBLE_Client.  
     
 Beacon examples provided by [beegee-tokyo](https://github.com/beegee-tokyo) are in examples/BLE_Beacon_Scanner, BLE_EddystoneTLM_Beacon, BLE_EddystoneURL_Beacon.  
 
-Change the settings in the nimconfig.h file to customize NimBLE to your project, such as increasing max connections (default == 3).  
+Change the settings in the nimconfig.h file to customize NimBLE to your project, such as increasing max connections (default is 3).  
+<br/>  
 
-**Note To increase max connections in Arduino it is also required to change the controller max connections defined in sdkconfig.h.**  
-
-This is located in your Arduino/hardware/espressif/esp32/tools/sdk/include/config folder.
-
-The values in `sdkconfig.h` you will need to change are:  
-```
-#define CONFIG_BTDM_CONTROLLER_BLE_MAX_CONN 3  
-#define CONFIG_BTDM_CONTROLLER_BLE_MAX_CONN_EFF 3  
-```
-In `nimconfig.h` the value is:  
-```
-#define CONFIG_BT_NIMBLE_MAX_CONNECTIONS 3  
-```
-Espressif has stated the hard maximum connections is 9.  
+### Command line and platformio
+See the command line configuration options available in [Command_line_config](Command_line_config.md).  
 <br/>  
 
 # Acknowledgments