AVR8: Add option to keep 3.3V regulator enabled

[pub/USBasp.git] / LUFA / Drivers / USB / Core / AVR8 / USBController_AVR8.h

diff --git a/LUFA/Drivers/USB/Core/AVR8/USBController_AVR8.h b/LUFA/Drivers/USB/Core/AVR8/USBController_AVR8.h
index 1b72bf1..fedc04e 100644 (file)
--- a/LUFA/Drivers/USB/Core/AVR8/USBController_AVR8.h
+++ b/LUFA/Drivers/USB/Core/AVR8/USBController_AVR8.h
@@ -133,6 +133,14 @@
                         */
                        #define USB_OPT_REG_ENABLED                (0 << 1)
 
+                       /** Option mask for \ref USB_Init() to keep regulator enabled at all times. Indicates that \ref USB_Disable()
+                        *  should not disable the regulator as it would otherwise. Has no effect if regulator is disabled using
+                        *  \ref USB_OPT_REG_DISABLED.
+                        *
+                        *  \note See USB AVR data sheet for more information on the internal pad regulator.
+                        */
+                       #define USB_OPT_REG_KEEP_ENABLED           (1 << 3)
+
                        /** Manual PLL control option mask for \ref USB_Init(). This indicates to the library that the user application
                         *  will take full responsibility for controlling the AVR's PLL (used to generate the high frequency clock
                         *  that the USB controller requires) and ensuring that it is locked at the correct frequency for USB operations.