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Mikael Degerfält 699546df8c Handle sub menus in a generic way and moved adjust menu logic to separate file 
This is a big one where I can finally reap what I sown. Sub menu entries now provide two functions, one to get the text for the current value and one to apply changes aka save to EEPROM. With this I can replace so much code in the menu() function that handles input, but was _almost_ identical. The process of converting the old menus are not completed, and I can probably remove about 200 lines more code.

The question is still what to do with less general menus like the rotator and fast patch menu.

One problem with the current implementation is that it is RAM heavy. It seems the const MenuEntry structs are placed in ram, because there is a pointer to RAM that I assume is allocated during execution and therefore the address cannot be stored in ROM.

My plan has been to put all the configuration fields (that are stored in EEPROM) into a struct or an array. When that is implemented, I can instead store the offset into the array in the const struct, which should be available at compile time and therefore can reside completely in ROM.
2019-06-23 17:14:17 +02:00
hardware Final NuEVI PCBs, schematics and gerbers added. Improved vibrato (now goes below calibrated zero/dead zone too). Fix for AT breath on/off setting not saved. Added midi controller resets when changing breath CC settings. 2018-07-09 16:44:32 +02:00
NuEVI Handle sub menus in a generic way and moved adjust menu logic to separate file 2019-06-23 17:14:17 +02:00
NuEVI-audio Add NuEVI version with audio output (from Johan) 2019-03-04 10:21:21 +01:00
simulation Handle sub menus in a generic way and moved adjust menu logic to separate file 2019-06-23 17:14:17 +02:00
.gitignore Handle sub menus in a generic way and moved adjust menu logic to separate file 2019-06-23 17:14:17 +02:00
.gitmodules Let imgui submodule be untracked without whining 2019-06-23 15:58:54 +02:00
LICENSE.md First commit. Arduino sketch plus devboard plans. 2017-08-08 14:46:29 +02:00
NuEVI user guide 135.doc Support for CV box/CV board (compile option). Match idle CV from PWM breath CV on A6 to direct output idle voltage from breath sensor (so any of them can be used for CV box without need for recalibration of box). Added reading and ignoring incoming USB MIDI messages to prevent buffers from getting filled up blocking outgoing messages. 2019-05-25 11:05:17 +02:00
NuEVI user guide 135.pdf Support for CV box/CV board (compile option). Match idle CV from PWM breath CV on A6 to direct output idle voltage from breath sensor (so any of them can be used for CV box without need for recalibration of box). Added reading and ignoring incoming USB MIDI messages to prevent buffers from getting filled up blocking outgoing messages. 2019-05-25 11:05:17 +02:00
NuEVI-v135-CVBD.ino.hex Support for CV box/CV board (compile option). Match idle CV from PWM breath CV on A6 to direct output idle voltage from breath sensor (so any of them can be used for CV box without need for recalibration of box). Added reading and ignoring incoming USB MIDI messages to prevent buffers from getting filled up blocking outgoing messages. 2019-05-25 11:05:17 +02:00
NuEVI-v135.ino.hex Support for CV box/CV board (compile option). Match idle CV from PWM breath CV on A6 to direct output idle voltage from breath sensor (so any of them can be used for CV box without need for recalibration of box). Added reading and ignoring incoming USB MIDI messages to prevent buffers from getting filled up blocking outgoing messages. 2019-05-25 11:05:17 +02:00
README.md Removed section from readme that is no longer valid 2019-06-08 14:03:50 +02:00

README.md

NuEVI

A project by wind controller enthusiasts wanting to save the endangered Electronic Valve Instrument.

Follow the project at https://hackaday.io/project/25756-diy-evi-style-windcontroller

Building NuEVI

NuEVI is easiest to build using the Arduino IDE. You will also need to download and install Teensyduino to build for and upload to the Teensy.

Libraries

A few libraries need to be added that are not part of the default Arduino install. These can be added directly via the Library Manager in the Arduino IDE:

  • Adafruit MPR121
  • Adafruit GFX
  • Adafruit SSD1306 (version 1.2.9 or above)

You also need to install Edgar Bonet's Filters library, specifically the fix-integer-overflow branch. One of the easiest way to do that is to download the git repo as a zip file, and then add that in the Arduino IDE (under Sketch -> Include Library -> Add .ZIP library)

Compile options

Open NuEVI.ino in the Arduino IDE. Under "Tools -> Board", select "Teensy 3.2 / 3.1". Then set "Tools -> USB Type" to "MIDI".

If you have Teensyduino 1.4.0 or earlier, you also need to change an option in the code. In the Arduino Editor (where you have NuEVI.ino open), comment out the line with #define NEWTEENSYDUINO. If this does not match the Teensyduino version, pitch bend over USB-MIDI will not work properly.

Building and uploading

Connect the NuEVI via USB to your computer, open the Teensy application and make sure the "Auto" option is selected (the green round icon). In Arduino IDE, select "Sketch -> Verify/Compile" and once that is complete press the reset button on the Teensy chip (you have to remove the top cover on the NuEVI to access this). Upon resetting, it should upload the new firmware onto the NuEVI.

After uploading new firmware, you may need to reset the config memory of the NuEVI. It's a good idea to do between version upgrades, since the config parameter format often changes. To do this, press and hold the MENU and ENTER buttons while turning on the NuEVI.