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https://github.com/supleed2/ELEC60013-ES-CW2.git
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Catch up to P1S5
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@ -13,5 +13,6 @@ platform = ststm32
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board = nucleo_l432kc
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framework = arduino
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monitor_speed = 115200
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lib_deps =
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lib_deps =
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olikraus/U8g2@^2.32.10
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stm32duino/STM32duino FreeRTOS@^10.3.1
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131
src/main.cpp
131
src/main.cpp
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@ -1,25 +1,26 @@
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// https://github.com/adamb314/ThreadHandler
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#include <Arduino.h>
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#include <STM32FreeRTOS.h>
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#include <U8g2lib.h>
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#include <atomic>
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#include <string>
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volatile int32_t currentStepSize;
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volatile std::atomic<int32_t> currentStepSize;
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static std::atomic<uint8_t> keyArray[7];
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#pragma region Config Values
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const uint32_t interval = 10; // Display update interval
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const uint8_t octave = 4; // Octave to start on
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const uint32_t samplingRate = 44100; // Sampling rate
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const int32_t stepSizes[] = {
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6370029, 6748811, 7150116, 7575284, 8025734, 8502969, 9008582,
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9544260, 10111791, 10713070, 11350102, 12025014, 12740059, 13497622,
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14300233, 15150569, 16051469, 17005939, 18017164, 19088521, 20223583,
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21426140, 22700205, 24050029, 25480118, 26995245, 28600466, 30301138,
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32102938, 34011878, 36034329, 38177042, 40447167, 42852281, 45400410,
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48100059, 50960237, 53990491, 57200933, 60602277, 64205876, 68023756,
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72068659, 76354085, 80894335, 85704562, 90800821, 96200119, 101920475,
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107980982, 114401866, 121204555, 12841175, 136047513, 144137319, 152708170,
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161788670, 171409125, 181601642, 192400238}; // Step sizes for each note
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#pragma endregion
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typedef struct {
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int32_t stepSize;
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std::string note;
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} Note;
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const Note notes[] = {
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{0, "None"}, {3185014, "C1"}, {3374405, "C1#"}, {3575058, "D1"}, {3787642, "D1#"}, {4012867, "E1"}, {4251484, "F1"}, {4504291, "F1#"}, {4772130, "G1"}, {5055895, "G1#"}, {5356535, "A1"}, {5675051, "A1#"}, {6012507, "B1"}, {6370029, "C2"}, {6748811, "C2#"}, {7150116, "D2"}, {7575284, "D2#"}, {8025734, "E2"}, {8502969, "F2"}, {9008582, "F2#"}, {9544260, "G2"}, {10111791, "G2#"}, {10713070, "A2"}, {11350102, "A2#"}, {12025014, "B2"}, {12740059, "C3"}, {13497622, "C3#"}, {14300233, "D3"}, {15150569, "D3#"}, {16051469, "E3"}, {17005939, "F3"}, {18017164, "F3#"}, {19088521, "G3"}, {20223583, "G3#"}, {21426140, "A3"}, {22700205, "A3#"}, {24050029, "B3"}, {25480118, "C4"}, {26995245, "C4#"}, {28600466, "D4"}, {30301138, "D4#"}, {32102938, "E4"}, {34011878, "F4"}, {36034329, "F4#"}, {38177042, "G4"}, {40447167, "G4#"}, {42852281, "A4"}, {45400410, "A4#"}, {48100059, "B4"}, {50960237, "C5"}, {53990491, "C5#"}, {57200933, "D5"}, {60602277, "D5#"}, {64205876, "E5"}, {68023756, "F5"}, {72068659, "F5#"}, {76354085, "G5"}, {80894335, "G5#"}, {85704562, "A5"}, {90800821, "A5#"}, {96200119, "B5"}, {101920475, "C6"}, {107980982, "C6#"}, {114401866, "D6"}, {121204555, "D6#"}, {128411753, "E6"}, {136047513, "F6"}, {144137319, "F6#"}, {152708170, "G6"}, {161788670, "G6#"}, {171409125, "A6"}, {181601642, "A6#"}, {192400238, "B6"}, {203840951, "C7"}, {215961965, "C7#"}, {228803732, "D7"}, {242409110, "D7#"}, {256823506, "E7"}, {272095026, "F7"}, {288274638, "F7#"}, {305416340, "G7"}, {323577341, "G7#"}, {342818251, "A7"}, {363203285, "A7#"}, {384800476, "B7"}};
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#define icon_width 10
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#define icon_height 10
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const unsigned char icon_bits[] = {
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0x00, 0x00, 0x00, 0x00, 0xcc, 0x00, 0xcc, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x02, 0x01, 0x02, 0x01, 0xfe, 0x01, 0x00, 0x00};
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#pragma region Pin Definitions
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// Row select and enable
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@ -79,18 +80,57 @@ void setRow(const uint8_t rowIdx) {
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digitalWrite(REN_PIN, HIGH);
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}
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uint16_t getTopKey(const uint8_t array[]) {
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uint16_t getTopKey() {
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uint16_t topKey = 0;
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for (uint8_t i = 0; i < 3; i++) {
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for (uint8_t j = 0; j < 4; j++) {
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if (array[i] & (0x1 << j)) {
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topKey = (octave - 2) * 12 + i * 4 + j;
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if (keyArray[i] & (0x1 << j)) {
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topKey = (octave - 2) * 12 + i * 4 + j + 1;
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}
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}
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}
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return topKey;
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}
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void sampleISR() {
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static int32_t phaseAcc = 0;
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phaseAcc += currentStepSize;
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int32_t Vout = phaseAcc >> 24;
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analogWrite(OUTR_PIN, Vout + 128);
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}
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void scanKeysTask(void *pvParameters) {
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const TickType_t xFrequency = 50 / portTICK_PERIOD_MS;
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TickType_t xLastWakeTime = xTaskGetTickCount();
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while (1) {
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vTaskDelayUntil(&xLastWakeTime, xFrequency);
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for (uint8_t i = 0; i < 3; i++) {
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setRow(i);
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delayMicroseconds(3);
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keyArray[i] = readCols();
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}
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currentStepSize = notes[getTopKey()].stepSize; // Atomic Store
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}
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}
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void displayUpdateTask(void *pvParameters) {
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const TickType_t xFrequency = 100 / portTICK_PERIOD_MS;
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TickType_t xLastWakeTime = xTaskGetTickCount();
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while (1) {
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vTaskDelayUntil(&xLastWakeTime, xFrequency);
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u8g2.clearBuffer(); // clear the internal memory
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u8g2.setFont(u8g2_font_profont12_mf); // choose a suitable font
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u8g2.drawStr(2, 10, notes[getTopKey()].note.c_str()); // Print the current key
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digitalToggle(LED_BUILTIN);
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u8g2.setCursor(2, 20);
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for (uint8_t i = 0; i < 7; i++) {
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u8g2.print(keyArray[i], HEX);
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}
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u8g2.drawXBM(118, 0, 10, 10, icon_bits);
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u8g2.sendBuffer(); // transfer internal memory to the display
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}
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}
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void setup() {
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#pragma region Pin Setup
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pinMode(RA0_PIN, OUTPUT);
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@ -119,33 +159,32 @@ void setup() {
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// Initialise UART
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Serial.begin(115200);
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Serial.println("Hello World");
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TIM_TypeDef *Instance = TIM1;
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HardwareTimer *sampleTimer = new HardwareTimer(Instance);
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sampleTimer->setOverflow(samplingRate, HERTZ_FORMAT);
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sampleTimer->attachInterrupt(sampleISR);
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sampleTimer->resume();
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TaskHandle_t scanKeysHandle = NULL;
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TaskHandle_t displayUpdateHandle = NULL;
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xTaskCreate(
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scanKeysTask, // Function that implements the task
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"scanKeys", // Text name for the task
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64, // Stack size in words, not bytes
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NULL, // Parameter passed into the task
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2, // Task priority
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&scanKeysHandle // Pointer to store the task handle
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);
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xTaskCreate(
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displayUpdateTask, // Function that implements the task
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"displayUpdate", // Text name for the task
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256, // Stack size in words, not bytes
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NULL, // Parameter passed into the task
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1, // Task priority
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&displayUpdateHandle // Pointer to store the task handle
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);
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vTaskStartScheduler();
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}
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void loop() {
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static uint32_t next = millis();
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static uint8_t keyArray[7];
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for (uint8_t i = 0; i < 3; i++) {
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setRow(i);
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delayMicroseconds(3);
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keyArray[i] = readCols();
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}
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for (uint8_t i = 3; i < 7; i++) {
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setRow(i);
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delayMicroseconds(3);
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keyArray[i] = readCols();
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}
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if (millis() > next) {
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next += interval;
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u8g2.clearBuffer(); // clear the internal memory
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u8g2.setFont(u8g2_font_profont12_mf); // choose a suitable font
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u8g2.setCursor(2, 10); // set the cursor position
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u8g2.print(stepSizes[getTopKey(keyArray)]); // Print the current frequency
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digitalToggle(LED_BUILTIN);
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u8g2.setCursor(2, 20);
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for (uint8_t i = 0; i < 7; i++) {
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u8g2.print(keyArray[i], HEX);
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}
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u8g2.sendBuffer(); // transfer internal memory to the display
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}
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}
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void loop() {}
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