Use words for main task stack size config.

* Update readme

* Update platform.json

Author: h2zero

README.md

@@ -69,15 +69,28 @@ This Arduino Core does **not** contain any BLE functionality. It has been design
 
 ## Installing
 
-### Board Manager
+### Platformio
+1. [Install PlatformIO](https://platformio.org)
+2. Create PlatformIO project and configure a platform option in [platformio.ini](http://docs.platformio.org/page/projectconf.html) file:
+
+```ini
+[env]
+platform = https://github.com/h2zero/platform-n-able.git
+framework = arduino
+lib_deps = h2zero/NimBLE-Arduino@^1.4.0
+board = ...
+...
+```
+
+### Arduino Board Manager
  1. [Download and install the Arduino IDE](https://www.arduino.cc/en/Main/Software) (At least v1.6.12)
  2. Start the Arduino IDE
  3. Go into Preferences
  4. Add ```https://h2zero.github.io/n-able-Arduino/package_n-able_boards_index.json``` as an "Additional Board Manager URL"
  5. Open the Boards Manager from the Tools -> Board menu and install "Arm BLE Boards"
  6. Select your board from the Tools -> Board menu
 
-### From git (for core development)
+#### From git (for core development)
  1. Follow steps from Board Manager section above
  2. ```cd <SKETCHBOOK>```, where ```<SKETCHBOOK>``` is your Arduino Sketch folder:
   * OS X: ```~/Documents/Arduino```
@@ -109,10 +122,10 @@ This Arduino Core does **not** contain any BLE functionality. It has been design
 ## Configuration (optional)
 You can change the configuration for many settings by creating a `build_opt.h` file in your sketch folder.
 In here you can set compile time definitions for settings that will be included directly on the command line.
-For example: `'-DCONFIG_MAIN_TASK_STACK_SIZE=2048'` This will set the main task stack size to 2048 bytes.
+For example: `'-DCONFIG_MAIN_TASK_STACK_SIZE=512'` This will set the main task stack size to 512 words (2048 bytes).
 
 ### Configuration option list
- * `CONFIG_MAIN_TASK_STACK_SIZE` - sets the size **in bytes** of the main loop task.
+ * `CONFIG_MAIN_TASK_STACK_SIZE` - sets the size **in 32bit words** of the main loop task.
  * `CONFIG_RTOS_TICK_RATE_HZ` - set the tick rate for FreeRTOS (default 1024).
  * `CONFIG_RTOS_MAX_PRIORITIES` - set the maximum priority level for FreeRTOS tasks.
  * `CONFIG_RTOS_MIN_TASK_STACK_SIZE` - set the minimum task stack size.

cores/nRF5/main.cpp

@@ -26,12 +26,12 @@
 #  define MAIN_TASK_STACK_SIZE CONFIG_MAIN_TASK_STACK_SIZE
 #elif defined(DEVICE_RAM_SIZE)
 #  if DEVICE_RAM_SIZE < 32
-#    define MAIN_TASK_STACK_SIZE 1024
+#    define MAIN_TASK_STACK_SIZE 256
 #  else
-#    define MAIN_TASK_STACK_SIZE 2048
+#    define MAIN_TASK_STACK_SIZE 512
 #  endif
 #else
-#  define MAIN_TASK_STACK_SIZE 2048
+#  define MAIN_TASK_STACK_SIZE 512
 #endif
 
 // Weak empty variant initialization function.
@@ -40,7 +40,7 @@ void initVariant() __attribute__((weak));
 void initVariant() { }
 
 static TaskHandle_t _loopTaskHandle = NULL;
-static StackType_t _mainStack[ (MAIN_TASK_STACK_SIZE / 4) ];
+static StackType_t _mainStack[ MAIN_TASK_STACK_SIZE ];
 static StaticTask_t _mainTaskBuffer;
 
 void loopTask(void *pvParameters)
@@ -67,8 +67,8 @@ int main( void )
   Adafruit_TinyUSB_Core_init();
   #endif
 
-  _loopTaskHandle = xTaskCreateStatic(loopTask, "mlt", (MAIN_TASK_STACK_SIZE / 4),
-                                     NULL, 1, _mainStack, &_mainTaskBuffer);
+  _loopTaskHandle = xTaskCreateStatic(loopTask, "mlt", MAIN_TASK_STACK_SIZE,
+                                      NULL, 1, _mainStack, &_mainTaskBuffer);
 
   SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
 

libraries/n-able/examples/BLE_Advertiser/build_opt.h

@@ -1,4 +1,4 @@
-'-DCONFIG_MAIN_TASK_STACK_SIZE=512'
+'-DCONFIG_MAIN_TASK_STACK_SIZE=128'
 '-DCONFIG_BT_NIMBLE_HOST_TASK_STACK_SIZE=1024'
 '-DCONFIG_BT_NIMBLE_ROLE_CENTRAL_DISABLED'
 '-DCONFIG_BT_NIMBLE_ROLE_OBSERVER_DISABLED'

libraries/n-able/examples/BLE_Scan/build_opt.h

@@ -1,4 +1,4 @@
-'-DCONFIG_MAIN_TASK_STACK_SIZE=512'
+'-DCONFIG_MAIN_TASK_STACK_SIZE=128'
 '-DCONFIG_BT_NIMBLE_HOST_TASK_STACK_SIZE=1024'
 '-DCONFIG_BT_NIMBLE_ROLE_PERIPHERAL_DISABLED'
 '-DCONFIG_BT_NIMBLE_ROLE_BROADCASTER_DISABLED'

libraries/n-able/examples/FreeRTOS/build_opt.h

@@ -1 +1 @@
-'-DCONFIG_MAIN_TASK_STACK_SIZE=256'
+'-DCONFIG_MAIN_TASK_STACK_SIZE=64'

package.json

@@ -6,12 +6,13 @@
     "framework",
     "Arduino",
     "BLE",
-    "nRF5",
+    "nRF51",
+    "nRF52",
     "ARM"
   ],
   "license": "LGPL-2.1-or-later",
   "repository": {
     "type": "git",
-    "url": "https://github.com/h2zero/n-able.git"
+    "url": "https://github.com/h2zero/n-able-Arduino.git"
   }
 }