hg-usb-bootloader.patch

diff -u -r an0042_efm32_usb_uart_bootloader/src/main.c an0042_efm32_usb_uart_bootloader_hg/src/main.c
--- an0042_efm32_usb_uart_bootloader/src/main.c	2015-11-05 14:45:54.000000000 +1100
+++ an0042_efm32_usb_uart_bootloader_hg/src/main.c	2016-02-18 20:00:18.000000000 +1100
@@ -46,6 +46,7 @@
 #include "retargetdebug.h"
 
 /*** Typedef's and defines. ***/
+#define BOOTLOADER_VERSION_STRING "EFM32HG bootloader v1.0"
 
 /** Version string, used when the user connects */
 #if !defined( BOOTLOADER_VERSION_STRING )
@@ -154,6 +155,7 @@
 
   NVIC_DisableIRQ( RTC_IRQn );
 
+#if !defined( CMU_OSCENCMD_USHFRCOEN )
   /* Try to start HFXO. */
 
   CMU_OscillatorEnable( cmuOsc_HFXO, true, false );
@@ -164,7 +166,10 @@
   {
     i--;
   }
-
+#else
+  i = 1;
+#endif
+  
   USBTIMER_Init();
 
 #if !defined( NO_RAMFUNCS )
@@ -189,7 +194,9 @@
   }
   else
   {
+#if !defined( CMU_OSCENCMD_USHFRCOEN )
     CMU_ClockSelectSet( cmuClock_HF, cmuSelect_HFXO );
+#endif
     USBD_Init( &initstruct );       /* Start USB CDC functionality  */
   }
 
diff -u -r an0042_efm32_usb_uart_bootloader/src/usbconfig.h an0042_efm32_usb_uart_bootloader_hg/src/usbconfig.h
--- an0042_efm32_usb_uart_bootloader/src/usbconfig.h	2015-11-05 14:45:54.000000000 +1100
+++ an0042_efm32_usb_uart_bootloader_hg/src/usbconfig.h	2016-02-18 20:00:18.000000000 +1100
@@ -41,6 +41,10 @@
 
 #define USB_DEVICE
 
+#define USB_CORECLK_HFRCO /* Use HFRCO as core clock, default is HFXO. */
+
+#define USB_USBC_32kHz_CLK   USB_USBC_32kHz_CLK_LFRCO 
+  
 /****************************************************************************
 **                                                                         **
 ** Specify number of endpoints used (in addition to EP0).                  **
Only in an0042_efm32_usb_uart_bootloader_hg/src: usbconfig_origin.h