X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/3e515cdfa8d8f077c2585c061c6f4a988031c82b..fbabecee66b93596acc6f99a92be4a9dd3a750ce:/Projects/AVRISP-MKII/AVRISP.txt
diff --git a/Projects/AVRISP-MKII/AVRISP.txt b/Projects/AVRISP-MKII/AVRISP.txt
index 8d00d35d3..c4ba43ccc 100644
--- a/Projects/AVRISP-MKII/AVRISP.txt
+++ b/Projects/AVRISP-MKII/AVRISP.txt
@@ -57,7 +57,6 @@
* - Minimum ISP target clock speed of 500KHz due to hardware SPI module prescaler limitations
* - No reversed/shorted target connector detection and notification
* - A seperate header is required for each of the ISP, PDI and TPI programming protocols that the user wishes to use
- * - XMEGA EEPROM erase section command does not work (but EEPROM read/write and chip erase does)
*
* On AVR models with an ADC converter, AVCC should be tied to 5V (e.g. VBUS) and the 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
@@ -144,7 +143,7 @@
*
4 |
*
*
- * | XCLK |
+ * XCK |
* CLOCK |
* 5 |
*
@@ -178,7 +177,7 @@
* 2 |
*
*
- * | XCLK 2 |
+ * XCK 2 |
* CLOCK |
* 3 |
*
@@ -262,6 +261,21 @@
* targets lacking an ADC.
*
*
+ * | VTARGET_REF_VOLTS |
+ * Makefile CDEFS |
+ * Indicates the programmer AVR's AVCC reference voltage when measuring the target's supply voltage. Note that the supply
+ * voltage should never exceed the reference voltage on the programmer AVR without some form of protection to prevent damage
+ * to the ADC. Ignored when compiled for targets lacking an ADC, or when NO_VTARGET_DETECT is defined. |
+ *
+ *
+ * | VTARGET_SCALE_FACTOR |
+ * Makefile CDEFS |
+ * Indicates the target's supply voltage scale factor when applied to the ADC. A simple resistive divider can be used on the
+ * ADC pin for measuring the target's supply voltage, so that voltages above the programmer AVR's AVCC reference voltage can be
+ * measured. This should be the reciprocal of the division performed - e.g. if the VTARGET voltage is halved, this should be set
+ * to 2. Ignored when compiled for targets lacking an ADC, or when NO_VTARGET_DETECT is defined. |
+ *
+ *
* | LIBUSB_DRIVER_COMPAT |
* Makefile CDEFS |
* Define to switch to a non-standard endpoint scheme, breaking compatibility with AVRStudio under Windows but making
|