supleed2/ELEC60013-ES-CW2
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Now pulls stepSize from array and prints to screen

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Aadi Desai 2022-03-23 12:48:52 +00:00
parent 2278c768e7
commit 0c5d01ac35
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GPG key ID: CFFFE425830EF4D9
1 changed files with 31 additions and 23 deletions
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48
src/main.cpp
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@ -3,8 +3,22 @@
#include <Arduino.h>
#include <U8g2lib.h>
volatile int32_t currentStepSize;
#pragma region Config Values
const uint32_t interval = 10; // Display update interval
const uint8_t octave = 4; // Octave to start on
const uint32_t samplingRate = 44100; // Sampling rate
const int32_t stepSizes[] = {
6370029, 6748811, 7150116, 7575284, 8025734, 8502969, 9008582,
9544260, 10111791, 10713070, 11350102, 12025014, 12740059, 13497622,
14300233, 15150569, 16051469, 17005939, 18017164, 19088521, 20223583,
21426140, 22700205, 24050029, 25480118, 26995245, 28600466, 30301138,
32102938, 34011878, 36034329, 38177042, 40447167, 42852281, 45400410,
48100059, 50960237, 53990491, 57200933, 60602277, 64205876, 68023756,
72068659, 76354085, 80894335, 85704562, 90800821, 96200119, 101920475,
107980982, 114401866, 121204555, 12841175, 136047513, 144137319, 152708170,
161788670, 171409125, 181601642, 192400238}; // Step sizes for each note
#pragma endregion
#pragma region Pin Definitions
@ -46,25 +60,6 @@ void setOutMuxBit(const uint8_t bitIdx, const bool value) {
digitalWrite(REN_PIN, LOW);
}
// Function to read keys from key matrix
uint32_t readKeys() {
uint32_t keys = 0;
for (uint8_t i = 0; i < 3; i++) {
digitalWrite(REN_PIN, LOW);
digitalWrite(RA0_PIN, i & 0x01);
digitalWrite(RA1_PIN, i & 0x02);
digitalWrite(RA2_PIN, i & 0x04);
digitalWrite(REN_PIN, HIGH);
delayMicroseconds(5);
keys |= !digitalRead(C0_PIN) << (i * 4);
keys |= !digitalRead(C1_PIN) << (i * 4 + 1);
keys |= !digitalRead(C2_PIN) << (i * 4 + 2);
keys |= !digitalRead(C3_PIN) << (i * 4 + 3);
}
digitalWrite(REN_PIN, LOW);
return keys;
}
// Read key values in currently set row
uint8_t readCols() {
uint8_t row = 0;
@ -84,6 +79,18 @@ void setRow(const uint8_t rowIdx) {
digitalWrite(REN_PIN, HIGH);
}
uint16_t getTopKey(const uint8_t array[]) {
uint16_t topKey = 0;
for (uint8_t i = 0; i < 3; i++) {
for (uint8_t j = 0; j < 4; j++) {
if (array[i] & (0x1 << j)) {
topKey = (octave - 2) * 12 + i * 4 + j;
}
}
}
return topKey;
}
void setup() {
#pragma region Pin Setup
pinMode(RA0_PIN, OUTPUT);
@ -132,7 +139,8 @@ void loop() {
next += interval;
u8g2.clearBuffer(); // clear the internal memory
u8g2.setFont(u8g2_font_profont12_mf); // choose a suitable font
u8g2.drawStr(2, 10, "Hello World!"); // write something to the internal memory
u8g2.setCursor(2, 10); // set the cursor position
u8g2.print(stepSizes[getTopKey(keyArray)]); // Print the current frequency
digitalToggle(LED_BUILTIN);
u8g2.setCursor(2, 20);
for (uint8_t i = 0; i < 7; i++) {