mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-23 01:49:54 +00:00
74 lines
2.4 KiB
Plaintext
74 lines
2.4 KiB
Plaintext
|
/** \file
|
||
|
|
*
|
||
|
|
* This file contains special DoxyGen information for the generation of the main page and other special
|
||
|
|
* documentation pages. It is not a project source file.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** \mainpage MIDI Tone Generator Project
|
||
|
|
*
|
||
|
|
* \section Sec_Compat Project Compatibility:
|
||
|
|
*
|
||
|
|
* The following list indicates what microcontrollers are compatible with this project.
|
||
|
|
*
|
||
|
|
* \li Series 7 USB AVRs (AT90USBxxx7)
|
||
|
|
* \li Series 6 USB AVRs (AT90USBxxx6)
|
||
|
|
* \li Series 4 USB AVRs (ATMEGAxxU4)
|
||
|
|
*
|
||
|
|
* \section Sec_Info USB Information:
|
||
|
|
*
|
||
|
|
* The following table gives a rundown of the USB utilization of this project.
|
||
|
|
*
|
||
|
|
* <table>
|
||
|
|
* <tr>
|
||
|
|
* <td><b>USB Mode:</b></td>
|
||
|
|
* <td>Device</td>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td><b>USB Class:</b></td>
|
||
|
|
* <td>Audio Class</td>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td><b>USB Subclass:</b></td>
|
||
|
|
* <td>Standard Audio Device</td>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td><b>Relevant Standards:</b></td>
|
||
|
|
* <td>USBIF Audio Class Specification \n
|
||
|
|
* USB-MIDI Audio Class Extension Specification \n
|
||
|
|
* General MIDI Specification</td>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td><b>Supported USB Speeds:</b></td>
|
||
|
|
* <td>Full Speed Mode</td>
|
||
|
|
* </tr>
|
||
|
|
* </table>
|
||
|
|
*
|
||
|
|
* \section Sec_Description Project Description:
|
||
|
|
*
|
||
|
|
* MIDI note synthesiser project. This project implements a basic DDS frequency synthesiser, capable of producing 8-bit PWM sine
|
||
|
|
* waves of variable frequency. When attached to a USB host, this project will allow for multiple MIDI notes to be synthesised into
|
||
|
|
* audiable sound via PWM, using the notes sent to MIDI channel 1.
|
||
|
|
*
|
||
|
|
* Outgoing audio will output in 8-bit PWM onto the timer 3 output compare channel A. Decouple the audio output with a capacitor
|
||
|
|
* and attach to a speaker to hear the audio.
|
||
|
|
*
|
||
|
|
* \section Sec_Options Project Options
|
||
|
|
*
|
||
|
|
* The following defines can be found in this project, which can control the project behaviour when defined, or changed in value.
|
||
|
|
*
|
||
|
|
* <table>
|
||
|
|
* <tr>
|
||
|
|
* <th><b>Define Name:</b></th>
|
||
|
|
* <th><b>Location:</b></th>
|
||
|
|
* <th><b>Description:</b></th>
|
||
|
|
* </tr>
|
||
|
|
* <tr>
|
||
|
|
* <td>MAX_SIMULTANEOUS_NOTES</td>
|
||
|
|
* <td>AppConfig.h</td>
|
||
|
|
* <td>Sets the maximum number of MIDI notes that can be generated simultaneously. More notes require more processing time,
|
||
|
|
* and thus a value that is too high will cause audiable sound distortion due to insufficient CPU time.</td>
|
||
|
|
* </tr>
|
||
|
|
* </table>
|
||
|
|
*/
|
||
|
|
|