Unify full firmware profiles and add dual USB logging

src/helpers/UsbLogging.cpp

@@ -1,12 +1,28 @@
 #include "UsbLogging.h"
 
 #if defined(ARDUINO)
+#include <Arduino.h>
 #include <atomic>
 
+#if defined(MESH_DUAL_CDC_LOGGING)
+  #if !defined(NRF52_PLATFORM) || !defined(COMPANION_RADIO_FULL)
+    #error "MESH_DUAL_CDC_LOGGING is only supported by nRF52 Full Companion"
+  #endif
+  #if !defined(CFG_TUD_CDC) || CFG_TUD_CDC < 2
+    #error "MESH_DUAL_CDC_LOGGING requires CFG_TUD_CDC >= 2"
+  #endif
+  #include <Adafruit_TinyUSB.h>
+#endif
+
 namespace mesh {
 
 static std::atomic<bool> usb_logging_enabled{true};
 
+#if defined(MESH_DUAL_CDC_LOGGING)
+static Adafruit_USBD_CDC dedicated_usb_logging_port;
+static bool dedicated_usb_logging_port_started = false;
+#endif
+
 bool isUsbLoggingEnabled() {
   return usb_logging_enabled.load(std::memory_order_relaxed);
 }
@@ -15,5 +31,40 @@ void setUsbLoggingEnabled(bool enabled) {
   usb_logging_enabled.store(enabled, std::memory_order_relaxed);
 }
 
+void beginUsbLoggingPort() {
+#if defined(MESH_DUAL_CDC_LOGGING)
+  if (dedicated_usb_logging_port_started) return;
+
+  dedicated_usb_logging_port.begin(115200);
+  dedicated_usb_logging_port_started = true;
+
+  // The nRF52 core starts TinyUSB before setup(). If the host completed
+  // enumeration in that small window, reconnect once so it reads the expanded
+  // two-CDC descriptor. Usually enumeration has not completed and no reconnect
+  // is needed.
+  if (TinyUSBDevice.mounted()) {
+    TinyUSBDevice.detach();
+    delay(10);
+    TinyUSBDevice.attach();
+  }
+#endif
+}
+
+Stream& usbLoggingPort() {
+#if defined(MESH_DUAL_CDC_LOGGING)
+  return dedicated_usb_logging_port;
+#else
+  return Serial;
+#endif
+}
+
+bool hasDedicatedUsbLoggingPort() {
+#if defined(MESH_DUAL_CDC_LOGGING)
+  return true;
+#else
+  return false;
+#endif
+}
+
 }  // namespace mesh
 #endif