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Firmware MCU: Update sequencer block to support dynamic step count and enhance documentation

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This commit is contained in:
Erik Tóth
2025-12-01 22:45:58 +01:00
parent b106859252
commit 855fd01821
6 changed files with 82 additions and 50 deletions
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17
dev/digital/ESP32-S3/ESP32-S3.PrjPcb
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@@ -66,6 +66,23 @@ DItemRevisionGUID=
GenerateClassCluster=0
DocumentUniqueId=QMXNWCKL
[Document2]
DocumentPath=ESP32-S3.Harness
AnnotationEnabled=1
AnnotateStartValue=1
AnnotationIndexControlEnabled=0
AnnotateSuffix=
AnnotateScope=All
AnnotateOrder=-1
DoLibraryUpdate=1
DoDatabaseUpdate=1
ClassGenCCAutoEnabled=1
ClassGenCCAutoRoomEnabled=0
ClassGenNCAutoScope=None
DItemRevisionGUID=
GenerateClassCluster=0
DocumentUniqueId=
[Parameter1]
Name=ProjectTitle
Value=ESP32-S3

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dev/digital/ESP32-S3/History/ESP32-S3.~(3).PrjPcb.Zip Normal file
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35
dev/digital/Firmware_TEST/include/FIRMWARE.h
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@@ -16,9 +16,7 @@
#define N_MAX_ROWS 8
#define N_MAX_COLS 8
#define MS_DEBOUNCE 20
#define N_MAX_DAC_CH 4
#define N_MAX_SEQUENCE_STEPS 128
struct Key
{
@@ -94,7 +92,7 @@ class CV
class SequencerBlock
{
public:
SequencerBlock(uint16_t maxDurationMS, uint16_t minStepDurationMS);
SequencerBlock(uint16_t maxDurationMS, uint16_t maxStepCount);
// Aufnahme-Funktionen
void startRecord();
@@ -105,7 +103,7 @@ class SequencerBlock
// Wiedergabe-Funktionen
void startPlay();
void stopPlay();
void update(); // Muss regelmäßig aufgerufen werden
void update();
bool isPlaying();
// Sequenz-Verwaltung
@@ -114,35 +112,44 @@ class SequencerBlock
// Status-Abfragen
bool timeLimitReached();
uint8_t getStepCount();
bool stepLimitReached();
uint16_t getStepCount();
uint16_t getCurrentVoltageCh1();
uint16_t getCurrentVoltageCh2();
uint16_t getTotalDuration();
private:
// Sequenz-Speicher
DualVoltageDurationPair _sequence[N_MAX_SEQUENCE_STEPS];
uint8_t _stepCount;
uint8_t _currentStep;
/*!
* @brief Memory limiting
* @return (uint16_t) 1024
* @attention Increasing the value might lead to an overflow
* @note sizeOf(DualVoltageDurationPair) = 6 Byte ==> 6 Byte * 1024 = 6144 Byte
*/
const static uint16_t _MAX_SEQUENCE_STEPS = 1024;
// Zeitverwaltung
// Sequenz memory
DualVoltageDurationPair _sequence[_MAX_SEQUENCE_STEPS];
uint16_t _stepCount;
uint16_t _currentStep;
// Time management
uint16_t _maxDurationMS;
uint16_t _minStepDurationMS;
uint16_t _maxStepCount;
unsigned long _recordStartTime;
unsigned long _lastStepTime;
unsigned long _playStartTime;
unsigned long _stepStartTime;
// Status-Flags
// Status flags
bool _isRecording;
bool _isPlaying;
bool _loop;
// Letzte aufgenommene Spannungen
// Last recorded Voltage: at n-th step minus one
uint16_t _lastVoltageCh1;
uint16_t _lastVoltageCh2;
// Hilfsfunktionen
// helper functions
void _finishCurrentStep();
bool _canAddStep();
};

22
dev/digital/Firmware_TEST/include/FIRMWARE_DEF.h
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@@ -11,11 +11,12 @@
#include <Arduino.h>
#include <Wire.h>
// CONSTANTS DEFINITONS
#define N_KEYBOARD_ROW 4
#define N_KEYBOARD_COL 3
#define N_KEYBOARD_ROW 4 // for PROD. change to 5
#define N_KEYBOARD_COL 3 // for PROD. change to 5
#define N_CV_GATES 2
#define N_SB 2
#define BAUDRATE 115200
#define N_MAX_SEQ_STEPS 512
// PIN DEFENTITIONS
// I2C PINS
#define PIN_SDA 15
@@ -25,15 +26,22 @@
#define PIN_K_R1 8
#define PIN_K_R2 9
#define PIN_K_R3 10
#define PIN_K_R4 // 11 NOT IN USE
#define PIN_K_R4 11 // DEV. not in use
#define PIN_K_C0 1
#define PIN_K_C1 2
#define PIN_K_C2 4
#define PIN_K_C3 // 5 NOT IN USE
#define PIN_K_C4 // 6 NOT IN USE
#define PIN_K_C3 5 // DEV. not in use
#define PIN_K_C4 6 // DEV. not in use
// SEQUENCER BUTTON PINS
#define PIN_SB_1_REC 37 // 33 not available on dev board
#define PIN_SB_1_PLAY 38 // 34 not available on dev board
#define PIN_SB_1_REC 37 // for PROD. change to 33 / not available on dev board
#define PIN_SB_1_PLAY 38 // for PROD. change to 34 / not available on dev board
#define PIN_SB_2_REC 35
#define PIN_SB_2_PLAY 36
// MISC/INFO PINS
#define PIN_ACTIVE -1 // TODO: if any key is played return HIGH
#define PIN_REC -1 // TODO: if any sb is recording return HIGH
#define PIN_BPM -1 // TODO: get bpm through potentiometer analog value
#define PIN_B_METRONOME -1 // TODO: button activates/deactivates bpm led output
#define PIN_L_METRONOME -1 // TODO: led blinks according to bpm value
#endif

27
dev/digital/Firmware_TEST/src/FIRMWARE.cpp
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@@ -235,12 +235,12 @@ uint8_t CV::_getKeyToVoltageIndex(Key k)
/*!
* @param maxDurationMS maximum loop duration of recording in milliseconds
* @param minStepDurationMS minimum duration for a step to be recorded (prevents ultra-short steps)
* @param maxStepCount maximum number of steps that can be recorded
*/
SequencerBlock::SequencerBlock(uint16_t maxDurationMS, uint16_t minStepDurationMS)
SequencerBlock::SequencerBlock(uint16_t maxDurationMS, uint16_t maxStepCount)
{
_maxDurationMS = maxDurationMS;
_minStepDurationMS = minStepDurationMS;
_maxStepCount = maxStepCount;
_stepCount = 0;
_currentStep = 0;
_isRecording = false;
@@ -386,7 +386,7 @@ void SequencerBlock::clear()
_lastVoltageCh1 = 0;
_lastVoltageCh2 = 0;
for(uint8_t i = 0; i < N_MAX_SEQUENCE_STEPS; i++)
for(uint8_t i = 0; i < _MAX_SEQUENCE_STEPS; i++)
{
_sequence[i].voltage_ch1 = 0;
_sequence[i].voltage_ch2 = 0;
@@ -409,7 +409,12 @@ bool SequencerBlock::timeLimitReached()
return (elapsed >= _maxDurationMS);
}
uint8_t SequencerBlock::getStepCount()
bool SequencerBlock::stepLimitReached()
{
return (_stepCount >= _maxStepCount);
}
uint16_t SequencerBlock::getStepCount()
{
return _stepCount;
}
@@ -447,21 +452,13 @@ void SequencerBlock::_finishCurrentStep()
unsigned long now = millis();
uint16_t duration = now - _lastStepTime;
// Nur Steps mit ausreichender Dauer speichern
if(duration >= _minStepDurationMS)
{
_sequence[_stepCount - 1].duration = duration;
}
else
{
// Step war zu kurz, verwerfen
_stepCount--;
}
}
bool SequencerBlock::_canAddStep()
{
if(_stepCount >= N_MAX_SEQUENCE_STEPS) return false;
if(_stepCount >= _maxStepCount) return false;
if(_stepCount >= _MAX_SEQUENCE_STEPS) return false;
if(timeLimitReached()) return false;
return true;

17
dev/digital/Firmware_TEST/src/main.cpp
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@@ -1,5 +1,8 @@
/*
* Example Code Three - Dual Channel Sequencer
* TODO:
- add predefined sequence of voltage (e.g. for usage as startup sound)
- implement INFO and MISC pins form file FIRMWARE_DEF.h
*/
#include "FIRMWARE_DEF.h"
#include "FIRMWARE.h"
@@ -12,17 +15,17 @@ Keyboard keyboard(N_KEYBOARD_ROW, N_KEYBOARD_COL, pins_keyboard_row, pins_keyboa
Adafruit_MCP4728 MCP4728;
MCP4728_channel_t cvMap[N_CV_GATES] = {MCP4728_CHANNEL_A, MCP4728_CHANNEL_B};
uint16_t keyToVoltage[N_KEYBOARD_ROW*N_KEYBOARD_COL] = { /* 83mV = 1/12V */
1*83, 5*83, 9*83,
2*83, 6*83, 10*83,
3*83, 7*83, 11*83,
4*83, 8*83, 12*83
1*83, 5*83, 9*83, /* ROW 1: B D Fis */
2*83, 6*83, 10*83, /* ROW 2: H Dis G */
3*83, 7*83, 11*83, /* ROW 3: C E Gis */
4*83, 8*83, 12*83 /* ROW 4: Cis F A' */
};
CV cv(&MCP4728, &Wire, N_CV_GATES, cvMap, keyToVoltage, N_KEYBOARD_ROW, N_KEYBOARD_COL);
// Sequencer mit 30s max, 50ms Mindest-Step-Dauer
SequencerBlock sb1(30000, 50);
SequencerBlock sb2(30000, 50);
// Sequencer 30s max, 512 max Steps
SequencerBlock sb1(30000, N_MAX_SEQ_STEPS);
SequencerBlock sb2(30000, N_MAX_SEQ_STEPS);
// Button States
struct ButtonState {