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Minor documentation updates.

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This commit is contained in:
Dean Camera 2009-12-29 05:08:08 +00:00
parent 4600fd0cb6
commit 93fe420d89
3 changed files with 11 additions and 9 deletions
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12
Projects/AVRISP-MKII/AVRISP.txt
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@ -54,18 +54,18 @@
* drivers. When prompted, direct your OS to install Atmel's AVRISP-MKII drivers provided with AVRStudio.
*
* Note that this design currently has several limitations:
* - Minimum ISP target clock speed of 500KHz due to hardware SPI used
* - Minimum ISP target clock speed of 500KHz due to hardware SPI module prescaler limitations
* - No reversed/shorted target connector detection and notification
*
* 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 at a fixed 5V level.
* 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 only programming support (since ISP and TPI modes are not needed).
* XPLAIN's XMEGA AVR, and will enable PDI/TPI only programming support (since ISP mode is not needed).
*
* 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, PDI or TPI programming support can be disabled to reduce program size.
* of FLASH is required. On 8KB devices, ISP or PDI/TPI programming support can be disabled to reduce program size.
*
* \section Sec_ISP ISP Connections
* Connections to the device for SPI programming (when enabled):
@ -250,8 +250,8 @@
* <tr>
* <td>XPROG_VIA_HARDWARE_USART</td>
* <td>Makefile CDEFS</td>
* <td>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
* <td>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 and PDI/TPI programming headers) but increases programming speed dramatically.
* <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>