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-rw-r--r--Projects/AVRISP-MKII/AVRISP-MKII.txt9
-rw-r--r--Projects/AVRISP-MKII/Descriptors.c4
-rw-r--r--Projects/AVRISP-MKII/Lib/V2Protocol.c2
-rw-r--r--Projects/AVRISP-MKII/Lib/V2Protocol.h9
-rw-r--r--Projects/AVRISP-MKII/makefile1
5 files changed, 21 insertions, 4 deletions
diff --git a/Projects/AVRISP-MKII/AVRISP-MKII.txt b/Projects/AVRISP-MKII/AVRISP-MKII.txt
index fb6411b5..c47a65e6 100644
--- a/Projects/AVRISP-MKII/AVRISP-MKII.txt
+++ b/Projects/AVRISP-MKII/AVRISP-MKII.txt
@@ -57,7 +57,7 @@
* - No reversed/shorted target connector detection and notification
* - A separate header is required for each of the ISP, PDI and TPI programming protocols that the user wishes to use
*
- * On AVR models with an ADC converter, AVCC should be tied to 5V (e.g. VBUS) and the VTARGET_ADC_CHANNEL token should be
+ * On AVR models with an ADC converter, AVCC should be tied to 5V (e.g. VBUS) and the \c VTARGET_ADC_CHANNEL token should be
* set to an appropriate ADC channel number in the project makefile for VTARGET detection to operate correctly. On models
* without an ADC converter, VTARGET will report a fixed 5V level at all times.
*
@@ -267,6 +267,13 @@
* to the ADC. <i>Ignored when compiled for targets lacking an ADC, or when NO_VTARGET_DETECT is defined.</i></td>
* </tr>
* <tr>
+ * <td>VTARGET_USE_INTERNAL_REF</td>
+ * <td>Makefile LUFA_OPTS</td>
+ * <td>Selects the internal 2.56V ADC reference voltage, instead of using the AVR's VREF pin. When enabled, this option will
+ * override the VTARGET_REF_VOLTS configuration option. <i>Ignored when compiled for targets lacking an ADC, or when
+ * NO_VTARGET_DETECT is defined.</i></td>
+ * </tr>
+ * <tr>
* <td>VTARGET_SCALE_FACTOR</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Indicates the target's supply voltage scale factor when applied to the ADC. A simple resistive divider can be used on the
diff --git a/Projects/AVRISP-MKII/Descriptors.c b/Projects/AVRISP-MKII/Descriptors.c
index a84b75f3..fc259117 100644
--- a/Projects/AVRISP-MKII/Descriptors.c
+++ b/Projects/AVRISP-MKII/Descriptors.c
@@ -106,7 +106,7 @@ const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
{
.Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
- .EndpointAddress = (ENDPOINT_DESCRIPTOR_DIR_IN | AVRISP_DATA_IN_EPNUM),
+ .EndpointAddress = (ENDPOINT_DIR_IN | AVRISP_DATA_IN_EPNUM),
.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
.EndpointSize = AVRISP_DATA_EPSIZE,
.PollingIntervalMS = 0x0A
@@ -116,7 +116,7 @@ const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
{
.Header = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
- .EndpointAddress = (ENDPOINT_DESCRIPTOR_DIR_OUT | AVRISP_DATA_OUT_EPNUM),
+ .EndpointAddress = (ENDPOINT_DIR_OUT | AVRISP_DATA_OUT_EPNUM),
.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
.EndpointSize = AVRISP_DATA_EPSIZE,
.PollingIntervalMS = 0x0A
diff --git a/Projects/AVRISP-MKII/Lib/V2Protocol.c b/Projects/AVRISP-MKII/Lib/V2Protocol.c
index 4c8f0585..65e34fad 100644
--- a/Projects/AVRISP-MKII/Lib/V2Protocol.c
+++ b/Projects/AVRISP-MKII/Lib/V2Protocol.c
@@ -57,7 +57,7 @@ void V2Protocol_Init(void)
/* Initialize the ADC converter for VTARGET level detection on supported AVR models */
ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_128);
ADC_SetupChannel(VTARGET_ADC_CHANNEL);
- ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | VTARGET_ADC_CHANNEL_MASK);
+ ADC_StartReading(VTARGET_REF_MASK | ADC_RIGHT_ADJUSTED | VTARGET_ADC_CHANNEL_MASK);
#endif
V2Params_LoadNonVolatileParamValues();
diff --git a/Projects/AVRISP-MKII/Lib/V2Protocol.h b/Projects/AVRISP-MKII/Lib/V2Protocol.h
index 8e9e6ff3..2511571f 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. */
diff --git a/Projects/AVRISP-MKII/makefile b/Projects/AVRISP-MKII/makefile
index 0675242c..36c6c893 100644
--- a/Projects/AVRISP-MKII/makefile
+++ b/Projects/AVRISP-MKII/makefile
@@ -140,6 +140,7 @@ LUFA_OPTS += -D ENABLE_XPROG_PROTOCOL
LUFA_OPTS += -D VTARGET_ADC_CHANNEL=2
LUFA_OPTS += -D VTARGET_REF_VOLTS=5
LUFA_OPTS += -D VTARGET_SCALE_FACTOR=1
+#LUFA_OPTS += -D VTARGET_USE_INTERNAL_REF
#LUFA_OPTS += -D NO_VTARGET_DETECT
#LUFA_OPTS += -D LIBUSB_DRIVER_COMPAT
#LUFA_OPTS += -D XCK_RESCUE_CLOCK_ENABLE