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Removed software PDI/TPI emulation from the AVRISP-MKII clone project, as it was very buggy. PDI and TPI must now be implemented via seperate headers instead of the one unified ISP/TPI/PDI header.

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Dean Camera 2010-05-04 11:33:51 +00:00
parent 708a1c6166
commit ab8668b14e
4 changed files with 11 additions and 295 deletions
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30
Projects/AVRISP-MKII/AVRISP.txt
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@ -56,17 +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
* - Very slow TPI and PDI programming when in software emulated USART mode
* - 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 hardware 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.
*
@ -128,7 +123,7 @@
* <td><b>PDI 6 Pin Layout:</b></td>
* </tr>
* <tr>
* <td>MISO <b><sup>2</sup></b></td>
* <td>Tx/Rx <b><sup>2</sup></b></td>
* <td>DATA</td>
* <td>1</td>
* </tr>
@ -148,7 +143,7 @@
* <td>4</td>
* </tr>
* <tr>
* <td>PORTx.y <b><sup>2, 3</sup></b></td>
* <td>XCLK</td>
* <td>CLOCK</td>
* <td>5</td>
* </tr>
@ -160,9 +155,7 @@
* </table>
*
* <b><sup>1</sup></b> <i>Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only</i> \n
* <b><sup>2</sup></b> <i>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.</i> \n
* <b><sup>3</sup></b> <i>See AUX line related tokens in the \ref SSec_Options section</i>
* <b><sup>2</sup></b> <i>The AVR's Tx and Rx become the DATA line when connected together via a pair of 220 ohm resistors</i> \n
*
* \section Sec_TPI TPI Connections
* Connections to the device for TPI programming<b><sup>1</sup></b> (when enabled):
@ -174,7 +167,7 @@
* <td><b>TPI 6 Pin Layout:</b></td>
* </tr>
* <tr>
* <td>MISO <b><sup>2</sup></b></td>
* <td>Tx/Rx <b><sup>2</sup></b></td>
* <td>DATA</td>
* <td>1</td>
* </tr>
@ -184,7 +177,7 @@
* <td>2</td>
* </tr>
* <tr>
* <td>SCLK <b><sup>2</sup></b></td>
* <td>XCLK <b><sup>2</sup></b></td>
* <td>CLOCK</td>
* <td>3</td>
* </tr>
@ -206,8 +199,7 @@
* </table>
*
* <b><sup>1</sup></b> <i>Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only</i> \n
* <b><sup>2</sup></b> <i>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.</i> \n
* <b><sup>2</sup></b> <i>The AVR's Tx and Rx become the DATA line when connected together via a pair of 220 ohm resistors</i> \n
* <b><sup>3</sup></b> <i>See AUX line related tokens in the \ref SSec_Options section</i>
*
* \section SSec_Options Project Options
@ -261,14 +253,6 @@
* <td>Define to enable PDI and TPI programming protocol support. <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
* <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
* seperate ISP, PDI, and TPI programming headers) but increases programming speed dramatically.
* <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
* <tr>
* <td>NO_VTARGET_DETECT</td>
* <td>Makefile CDEFS</td>
* <td>Define to disable VTARGET sampling and reporting on AVR models with an ADC converter. This will cause the programmer