X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/b736a5ef2b72f888acdc8fe825f8f8151ec09680..c3db72afdc9928afbf2a8986f6970aa85dd9902a:/Projects/AVRISP-MKII/AVRISP.txt
diff --git a/Projects/AVRISP-MKII/AVRISP.txt b/Projects/AVRISP-MKII/AVRISP.txt
index 7688f7e0d..034df6717 100644
--- a/Projects/AVRISP-MKII/AVRISP.txt
+++ b/Projects/AVRISP-MKII/AVRISP.txt
@@ -56,16 +56,12 @@
* Note that this design currently has the following limitations:
* - 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
*
* 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
* without an ADC converter, VTARGET will report a fixed 5V level at all times.
*
- * When compiled for the XPLAIN board target, this will automatically configure itself for the correct connections to the
- * XPLAIN's XMEGA AVR, and will enable PDI/TPI only programming support (since ISP mode is not needed). Note that the
- * first revision XPLAIN board lacks a bootloader on the AT90USB1287, and thus for this firmware to be loaded, an external
- * programmer will be required.
- *
* While this application can be compiled for USB AVRs with as little as 8KB of FLASH, for full functionality 16KB or more
* of FLASH is required. On 8KB devices, ISP or PDI/TPI programming support can be disabled to reduce program size.
*
@@ -110,6 +106,10 @@
*
*
*
+ * In addition, the AVR's XCK pin will generate a .5MHz clock when SPI programming is used, to act as an external
+ * device clock if the fuses have been mis-set. To use the recovery clock, connect XCK to the target AVR's XTAL1
+ * pin, and set the ISP programming speed to 125KHz or below.
+ *
* 1 Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only \n
* 2 See AUX line related tokens in the \ref SSec_Options section
*
@@ -123,7 +123,7 @@
* | PDI 6 Pin Layout: |
*
*
- * | MISO 2 |
+ * Tx/Rx 2 |
* DATA |
* 1 |
*
@@ -143,7 +143,7 @@
* 4 |
*
*
- * | PORTx.y 2, 3 |
+ * XCLK |
* CLOCK |
* 5 |
*
@@ -155,9 +155,7 @@
*
*
* 1 Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only \n
- * 2 When XPROG_VIA_HARDWARE_USART is set, the AVR's Tx and Rx become the DATA line when connected together
- * via a pair of 220 ohm resistors, and the AVR's XCK pin becomes CLOCK. \n
- * 3 See AUX line related tokens in the \ref SSec_Options section
+ * 2 The AVR's Tx and Rx become the DATA line when connected together via a pair of 220 ohm resistors \n
*
* \section Sec_TPI TPI Connections
* Connections to the device for TPI programming1 (when enabled):
@@ -169,7 +167,7 @@
* TPI 6 Pin Layout: |
*
*
- * | MISO 2 |
+ * Tx/Rx 2 |
* DATA |
* 1 |
*
@@ -179,7 +177,7 @@
* 2 |
*
*
- * | SCLK 2 |
+ * XCLK 2 |
* CLOCK |
* 3 |
*
@@ -201,8 +199,7 @@
*
*
* 1 Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only \n
- * 2 When XPROG_VIA_HARDWARE_USART is set, the AVR's Tx and Rx become the DATA line when connected together
- * via a pair of 220 ohm resistors, and the AVR's XCK pin becomes CLOCK. \n
+ * 2 The AVR's Tx and Rx become the DATA line when connected together via a pair of 220 ohm resistors \n
* 3 See AUX line related tokens in the \ref SSec_Options section
*
* \section SSec_Options Project Options
@@ -243,7 +240,7 @@
*
* | VTARGET_ADC_CHANNEL |
* Makefile CDEFS |
- * ADC channel number (on supported AVRs) to use for VTARGET level detection. |
+ * ADC channel number (on supported AVRs) to use for VTARGET level detection, if NO_VTARGET_DETECT is not defined. |
*
*
* | ENABLE_ISP_PROTOCOL |
@@ -256,12 +253,17 @@
* Define to enable PDI and TPI programming protocol support. Ignored when compiled for the XPLAIN board. |
*
*
- * | XPROG_VIA_HARDWARE_USART |
+ * NO_VTARGET_DETECT |
+ * Makefile CDEFS |
+ * Define to disable VTARGET sampling and reporting on AVR models with an ADC converter. This will cause the programmer
+ * to report a fixed 5V target voltage to the host regardless of the real target voltage. |
+ *
+ *
+ * | LIBUSB_FILTERDRV_COMPAT |
* Makefile CDEFS |
- * Define to force the PDI and TPI protocols (when enabled) to use the much faster hardware USART instead of bit-banging
- * to match the official AVRISP pinout. This breaks pinout compatibility with the official AVRISP MKII (and requires
- * seperate ISP, PDI, and TPI programming headers) but increases programming speed dramatically.
- * Ignored when compiled for the XPLAIN board. |
+ * Define to switch to a non-standard endpoint scheme, breaking compatibility with AVRStudio under Windows but making
+ * the code compatible with Windows builds of avrdude using the libUSB driver. Linux platforms are not affected by this
+ * option.
* |
*
*/