diff options
Diffstat (limited to 'Projects/AVRISP/AVRISP.txt')
-rw-r--r-- | Projects/AVRISP/AVRISP.txt | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/Projects/AVRISP/AVRISP.txt b/Projects/AVRISP/AVRISP.txt index c15c27fa67..9dd2f119fe 100644 --- a/Projects/AVRISP/AVRISP.txt +++ b/Projects/AVRISP/AVRISP.txt @@ -109,7 +109,7 @@ * <b><sup>2</sup></b> <i>See \ref SSec_Options section</i>
*
*
- * Connections to the device for PDI programming (when enabled):
+ * Connections to the device for PDI programming<b><sup>1</sup></b> (when enabled):
*
* <table>
* <tr>
@@ -149,6 +149,9 @@ * </tr>
* </table>
*
+ * <b><sup>1</sup></b> When PDI_VIA_HARDWARE_USART is set, the AVR's Tx and Rx become the DATA line when connected together
+ * via a pair of 300 ohm resistors, and the AVR's XCK pin becomes CLOCK.
+ *
* \section SSec_Options Project Options
*
* The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
@@ -192,5 +195,11 @@ * <td>Makefile CDEFS</td>
* <td>Define to enable XMEGA PDI programming protocol support. <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
+ * <tr>
+ * <td>PDI_VIA_HARDWARE_USART</td>
+ * <td>Makefile CDEFS</td>
+ * <td>Define to force the PDI protocol (when enabled) to use the hardware USART instead of bit-banging to match the official
+ * AVRISP pinout. <i>Automatically set when compiled for the XPLAIN board.</i></td>
+ * </tr>
* </table>
*/
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