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