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-rw-r--r--Projects/AVRISP-MKII/Lib/V2Protocol.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/Projects/AVRISP-MKII/Lib/V2Protocol.h b/Projects/AVRISP-MKII/Lib/V2Protocol.h
index 8e9e6ff38..2511571f9 100644
--- a/Projects/AVRISP-MKII/Lib/V2Protocol.h
+++ b/Projects/AVRISP-MKII/Lib/V2Protocol.h
@@ -61,6 +61,15 @@
#if defined(USB_SERIES_4_AVR) && ((VTARGET_ADC_CHANNEL == 2) || (VTARGET_ADC_CHANNEL == 3))
#error The U4 AVR chips do not contain ADC channels 2 or 3. Please change VTARGET_ADC_CHANNEL or define NO_VTARGET_DETECT in the makefile.
#endif
+
+ #if defined(VTARGET_USE_INTERNAL_REF)
+ #undef VTARGET_REF_VOLTS
+ #define VTARGET_REF_VOLTS 2.56
+
+ #define VTARGET_REF_MASK ADC_REFERENCE_INT2560MV
+ #else
+ #define VTARGET_REF_MASK ADC_REFERENCE_AVCC
+ #endif
/* Macros: */
/** Programmer ID string, returned to the host during the CMD_SIGN_ON command processing. */