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Add VTARGET level detection to the AVRISP project on supported AVR models.

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This commit is contained in:
Dean Camera 2009-08-25 14:02:47 +00:00
parent 244bba2097
commit 17d06b8494
4 changed files with 31 additions and 7 deletions
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10
Projects/AVRISP/AVRISP.txt
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@ -60,9 +60,12 @@
*
* Note that this design currently has several limitations:
* - Minimum target clock speed of 500KHz due to hardware SPI used
* - No VTARGET detection and notification
* - No reversed/shorted target connector detection and notification
*
* On AVR models with an ADC converter, ACC 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.
*
* \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.
@ -88,5 +91,10 @@
* <td>Makefile CDEFS</td>
* <td>Mask for the programmer's target RESET line on the chosen port.</td>
* </tr>
* <tr>
* <td>VTARGET_ADC_CHANNEL</td>
* <td>Makefile CDEFS</td>
* <td>ADC channel number (on supported AVRs) to use for VTARGET level detection.</td>
* </tr>
* </table>
*/