Align joiner functionality on ncs example with other platforms (#2261)

* Add Button 3 event handler

* Add joiner start to button handler

* Restyled by prettier-markdown

config/nrfconnect/nrfconnect-app.cmake

@@ -76,6 +76,7 @@ chip_configure(ChipConfig
     ARCH arm-none-eabi
     CFLAGS ${CHIP_COMMON_FLAGS} --specs=nosys.specs
     CXXFLAGS ${CHIP_COMMON_FLAGS}
+    PROJECT_CONFIG ${CMAKE_CURRENT_SOURCE_DIR}/main/include/CHIPProjectConfig.h
 )
 
 chip_build(ChipLib ChipConfig

examples/lock-app/nrfconnect/README.md

@@ -82,7 +82,10 @@ position to another.
 used to mimick a user manually operating the lock. The button behaves as a
 toggle, swapping the state every time it is pressed.
 
-The remaining two LEDs and buttons (#3 and #4) are unused.
+**Button #3** can be used to trigger a thread joiner. It should be use to
+commission to the thread network. Credentials will be presented in log messages.
+
+The remaining two LEDs (#3 and #4) and button #4 are unused.
 
 <a name="building"></a>
 

examples/lock-app/nrfconnect/main/AppTask.cpp

@@ -209,6 +209,14 @@ void AppTask::ButtonEventHandler(uint32_t button_state, uint32_t has_changed)
         button_event.Handler            = FunctionHandler;
         sAppTask.PostEvent(&button_event);
     }
+
+    if (JOINER_BUTTON_MASK & button_state & has_changed)
+    {
+        button_event.ButtonEvent.PinNo  = JOINER_BUTTON;
+        button_event.ButtonEvent.Action = BUTTON_PUSH_EVENT;
+        button_event.Handler            = JoinerHandler;
+        sAppTask.PostEvent(&button_event);
+    }
 }
 
 void AppTask::TimerEventHandler(k_timer * timer)
@@ -299,6 +307,20 @@ void AppTask::FunctionHandler(AppEvent * aEvent)
     }
 }
 
+void AppTask::JoinerHandler(AppEvent * aEvent)
+{
+    if (aEvent->ButtonEvent.PinNo != JOINER_BUTTON)
+        return;
+
+    CHIP_ERROR error = CHIP_ERROR_NOT_IMPLEMENTED;
+
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD
+    error = ThreadStackMgr().JoinerStart();
+#endif
+
+    LOG_INF("Thread joiner triggering result: %s", chip::ErrorStr(error));
+}
+
 void AppTask::CancelTimer()
 {
     k_timer_stop(&sFunctionTimer);

examples/lock-app/nrfconnect/main/include/AppTask.h

@@ -47,6 +47,7 @@ class AppTask
 
     static void FunctionTimerEventHandler(AppEvent * aEvent);
     static void FunctionHandler(AppEvent * aEvent);
+    static void JoinerHandler(AppEvent * aEvent);
     static void LockActionEventHandler(AppEvent * aEvent);
 
     static void ButtonEventHandler(uint32_t buttons_state, uint32_t has_changed);

examples/lock-app/nrfconnect/main/include/CHIPProjectConfig.h

@@ -0,0 +1,35 @@
+/*
+ *
+ *    Copyright (c) 2020 Project CHIP Authors
+ *    All rights reserved.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+/**
+ *    @file
+ *          Example project configuration file for CHIP.
+ *
+ *          This is a place to put application or project-specific overrides
+ *          to the default configuration values for general CHIP features.
+ *
+ */
+
+#ifndef CHIP_PROJECT_CONFIG_H
+#define CHIP_PROJECT_CONFIG_H
+
+// Use a default pairing code if one hasn't been provisioned in flash.
+#define CHIP_DEVICE_CONFIG_USE_TEST_SETUP_PIN_CODE 12345678
+#define CHIP_DEVICE_CONFIG_USE_TEST_SETUP_DISCRIMINATOR 0xF00
+
+#endif // CHIP_PROJECT_CONFIG_H

examples/lock-app/nrfconnect/main/include/app_config.h

@@ -25,6 +25,8 @@
 #define LOCK_BUTTON_MASK DK_BTN2_MSK
 #define FUNCTION_BUTTON DK_BTN1
 #define FUNCTION_BUTTON_MASK DK_BTN1_MSK
+#define JOINER_BUTTON DK_BTN3
+#define JOINER_BUTTON_MASK DK_BTN3_MSK
 
 #define SYSTEM_STATE_LED DK_LED1
 #define LOCK_STATE_LED DK_LED2

examples/lock-app/nrfconnect/prj.conf

@@ -114,6 +114,8 @@ CONFIG_OPENTHREAD_BORDER_AGENT=y
 CONFIG_OPENTHREAD_BORDER_ROUTER=y
 CONFIG_OPENTHREAD_UDP_FORWARD=y
 CONFIG_OPENTHREAD_ENABLE_SERVICE=y
+CONFIG_OPENTHREAD_JOINER=y
+CONFIG_OPENTHREAD_MANUAL_START=y
 
 # Enable OpenThread shell
 CONFIG_OPENTHREAD_SHELL=y