mirror of
https://github.com/vale981/KSP-30-Hack
synced 2025-03-05 09:21:38 -05:00
init
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commit
7b1d78c13f
4 changed files with 208 additions and 0 deletions
183
keyboard/keyboard.ino
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183
keyboard/keyboard.ino
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/*****************************************************************************/
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/* Pins */
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/*****************************************************************************/
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// columns
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constexpr int KD1 = 14;
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constexpr int KD2 = 15;
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constexpr int KD3 = 16;
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constexpr int KD4 = 17;
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constexpr int KD5 = 18;
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constexpr int KD6 = 19;
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constexpr int KD7 = 2;
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constexpr int KD8 = 3;
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// row selectors
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constexpr int SA1 = 4;
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constexpr int SA2 = 5;
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constexpr int SA3 = 6;
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constexpr int SEL_A = SA1;
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constexpr int SEL_B = SA2;
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constexpr int SEL_C = SA3;
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// range selector
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constexpr int SA4 = 7;
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constexpr int SA5 = 8;
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constexpr int RS1 = SA4;
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constexpr int RS2 = SA5;
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/*****************************************************************************/
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/* Convenience */
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/*****************************************************************************/
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constexpr int col_pins[] = {KD1, KD2, KD3, KD4, KD5, KD6, KD7, KD8};
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constexpr int num_col_pins = 8;
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constexpr int num_half_pins = 4;
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// first hit
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constexpr int first_col[] = {KD1, KD2, KD3, KD4};
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// second hit
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constexpr int second_col[] = { KD5, KD6, KD7, KD8 };
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constexpr int selector_pins[] = {SA1, SA2, SA3, SA4, SA5};
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constexpr int num_selector_pins = 5;
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enum Range { LO = 0, MID, HI};
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constexpr Range ranges[] = {Range::LO, Range::MID, Range::HI};
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// rows in range
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constexpr int rows [] = {8, 8, 6};
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constexpr int range_offsets [] = {0,
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rows[1] * num_half_pins,
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rows[0] * num_half_pins + rows[1] * num_half_pins};
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/*****************************************************************************/
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/* Keys/Notes */
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/*****************************************************************************/
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constexpr int midi_base = 21;
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constexpr int num_keys = 88;
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/*****************************************************************************/
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/* Velocity */
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/*****************************************************************************/
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constexpr double min_velocity = 0.00005;
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constexpr double max_velocity = 0.00030;
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/*****************************************************************************/
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/* Keyscanning */
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/*****************************************************************************/
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void select_range(Range range) {
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switch(range) {
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case Range::LO:
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digitalWrite(RS1, LOW);
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digitalWrite(RS2, LOW);
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break;
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case Range::MID:
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digitalWrite(RS1, HIGH);
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digitalWrite(RS2, LOW);
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break;
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case Range::HI:
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digitalWrite(RS1, LOW);
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digitalWrite(RS2, HIGH);
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break;
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}
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}
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void select_row(int row) {
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digitalWrite(SEL_A, row & 1);
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row >>= 1;
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digitalWrite(SEL_B, row & 1);
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row >>= 1;
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digitalWrite(SEL_C, row & 1);
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}
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// UNUSED
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/* int scan_row(bool second) { */
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/* const int (&pins)[num_half_pins] = second ? second_col : first_col; */
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/* for(int i= 0; i < num_half_pins; i++) { */
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/* if (!digitalRead(pins[i])) */
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/* return i; */
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/* } */
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/* return -1; */
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/* } */
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int get_midi_note(Range range, int row, int col) {
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return midi_base + row * num_half_pins + col + range_offsets[range];
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}
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char midi_velocity(double velocity) {
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return (constrain(velocity, min_velocity, max_velocity) - min_velocity) / max_velocity * 127;
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}
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unsigned long S1[num_keys]; // timer value for first hit or 0
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bool S2[num_keys]; // whether key is pressed
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void setup() {
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/***************************************************************************/
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/* Serial */
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/***************************************************************************/
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Serial.begin(9600);
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/***************************************************************************/
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/* Pins */
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/***************************************************************************/
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for (int i = 0; i < num_col_pins; i++) {
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pinMode(col_pins[i], INPUT_PULLUP);
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}
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for (int i = 0; i < num_selector_pins; i++) {
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pinMode(selector_pins[i], OUTPUT);
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}
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for (int i = 0; i < num_keys; i++) {
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S2[i] = false;
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}
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digitalWrite(RS1, LOW);
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digitalWrite(RS2, LOW);
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digitalWrite(SEL_A, LOW);
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digitalWrite(SEL_B, LOW);
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digitalWrite(SEL_C, LOW);
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}
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void loop() {
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int key = 0;
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for (const auto range : ranges) {
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select_range(range);
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for (int row = 0; row < rows[range]; row++) {
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select_row(row);
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// read first row
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for(int i= 0; i < num_half_pins; i++) {
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if (!digitalRead(first_col[i])) {
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if(S1[key] == 0) {
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S1[key] = micros();
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} else {
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if (!S2[key] && !digitalRead(second_col[i])) {
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S2[key] = true;
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auto velocity = 1/static_cast<double>(micros() - S1[key]);
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Serial.print(key);
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Serial.print(" ");
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Serial.println(midi_velocity(velocity), DEC);
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}
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}
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}
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key++;
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}
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}
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}
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}
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18
project.org
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18
project.org
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* Pinout
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| Header | Arduino | Name | Function | Color |
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|--------+---------+------+----------+--------|
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| 1 | A0 | KD1 | S1 | |
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| 2 | A1 | KD2 | S1 | |
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| 3 | A2 | KD3 | S1 | |
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| 4 | A3 | KD4 | S1 | |
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| 5 | A4 | KD5 | S2 | Red |
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| 6 | A5 | KD6 | S2 | Grey |
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| 7 | D2 | KD7 | S2 | Yellow |
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| 8 | D3 | KD8 | S2 | Purple |
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| 9 | D4 | SA1 | Select A | White |
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| 10 | D5 | SA2 | Select B | Black |
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| 11 | D6 | SA3 | Select C | Blue |
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| 12 | D7 | SA4 | Mult 1 | Orange |
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| 13 | D8 | SA5 | Mult 2 | Black |
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| 14 | 5V | 5V | | White |
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| 15 | GND | GND | | Yellow |
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4
shell.nix
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4
shell.nix
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{ pkgs ? import <nixos> {} }:
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pkgs.mkShell {
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nativeBuildInputs = with pkgs; [ arduino git arduino-cli picocom ];
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}
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3
upload.sh
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3
upload.sh
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#! /usr/bin/env bash
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sudo arduino-cli compile -v -p /dev/ttyUSB0 -b arduino:avr:nano:cpu=atmega328old keyboard
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sudo arduino-cli upload -v -p /dev/ttyUSB0 -b arduino:avr:nano:cpu=atmega328old keyboard
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