Update NRF52 build to work again

src/concurrency/Thread.cpp

@@ -1,7 +1,13 @@
 #include "Thread.h"
 #include "timing.h"
+#include <assert.h>
 
-namespace concurrency {
+#ifdef ARDUINO_ARCH_ESP32
+#include "esp_task_wdt.h"
+#endif
+
+namespace concurrency
+{
 
 void Thread::start(const char *name, size_t stackSize, uint32_t priority)
 {
@@ -14,4 +20,27 @@ void Thread::callRun(void *_this)
     ((Thread *)_this)->doRun();
 }
 
+void Thread::serviceWatchdog()
+{
+#ifdef ARDUINO_ARCH_ESP32
+    esp_task_wdt_reset();
+#endif
+}
+
+void Thread::startWatchdog()
+{
+#ifdef ARDUINO_ARCH_ESP32
+    auto r = esp_task_wdt_add(taskHandle);
+    assert(r == ESP_OK);
+#endif
+}
+
+void Thread::stopWatchdog()
+{
+#ifdef ARDUINO_ARCH_ESP32
+    auto r = esp_task_wdt_delete(taskHandle);
+    assert(r == ESP_OK);
+#endif
+}
+
 } // namespace concurrency

src/concurrency/Thread.h

@@ -1,7 +1,6 @@
 #pragma once
 
 #include "freertosinc.h"
-#include "esp_task_wdt.h"
 
 namespace concurrency {
 
@@ -36,17 +35,9 @@ class Thread
      *
      * this only applies after startWatchdog() has been called.  If you need to sleep for a long time call stopWatchdog()
      */
-    void serviceWatchdog() { esp_task_wdt_reset(); }
-    void startWatchdog()
-    {
-        auto r = esp_task_wdt_add(taskHandle);
-        assert(r == ESP_OK);
-    }
-    void stopWatchdog()
-    {
-        auto r = esp_task_wdt_delete(taskHandle);
-        assert(r == ESP_OK);
-    }
+    void serviceWatchdog();
+    void startWatchdog();
+    void stopWatchdog();
 
   private:
     static void callRun(void *_this);