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ringbuffer with DMA memcpy, but i2s is broken

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This commit is contained in:
Sebastian
2025-06-23 01:41:46 +02:00
parent b9130dc0ae
commit d5ea2377f9
3 changed files with 198 additions and 153 deletions
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33
soundcube-firmware/ringbuffer.h
View File

@ -1,6 +1,5 @@
#pragma once
template<typename T>
class RingBuffer{
public:
RingBuffer() {}
@ -11,10 +10,10 @@ class RingBuffer{
}
void begin(){
buffer = new T[bufferSize];
buffer = new int16_t[bufferSize];
}
bool push(T data){
bool push(int16_t data){
if(counter < bufferSize){
buffer[write] = data;
write++; // % bufferSize;
@ -25,8 +24,8 @@ class RingBuffer{
return false;
}
T pop(){
T retval = 0;
int16_t pop(){
int16_t retval = 0;
if(counter > 0) {
counter--;
retval = buffer[read];
@ -36,6 +35,28 @@ class RingBuffer{
return retval;
}
void pushDMA(int32_t *source){
if(counter < bufferSize){
rp2040.memcpyDMA(&buffer[write], source, 4);
write += 2; // % bufferSize;
if(write == bufferSize) write = 0;
counter += 2;
}
}
void* getWritePointer(){
return &buffer[write];
}
void popDMA(int32_t *target){
if(counter > 0) {
counter -= 2;
rp2040.memcpyDMA(target, &buffer[read], 4);
read += 2;
if(read == bufferSize) read = 0;
}
}
bool isEmpty(){
return counter == 0;
}
@ -53,5 +74,5 @@ class RingBuffer{
int counter = 0;
int write = 0;
int read = 0;
volatile T *buffer;
int16_t *buffer;
};

292
soundcube-firmware/soundcube-firmware.ino
View File

@ -5,8 +5,10 @@
#include <AS5600.h>
#include <DAC8552.h>
#define FASTLED_FORCE_SOFTWARE_SPI
#include <FastLED.h>
#include <PWMAudio.h>
//#include <PWMAudio.h>
#include <I2S.h>
#include <SPI.h>
#include <SD.h>
@ -20,15 +22,15 @@ bool core1_disable_systick = true;
#define AURAL 1
#define UI_SAMPLERATE 22050
#define BUFFERSIZE 64
#define BUFFERSIZE 32
#define NSTREAMS 16
I2S i2s(INPUT_PULLUP);
int16_t buffer[BUFFERSIZE];
WaveStream stream[NSTREAMS];
I2S i2s(INPUT_PULLUP);
TLV320AIC3204 codec;
TCA9555 TCA(0x20, &Wire1);
@ -36,7 +38,10 @@ AS5600 ENC(&Wire1);
DAC8552 dac(9, &SPI1);
PWMAudio ui_snd(8);
//PWMAudio ui_snd(8);
CRGB ui_leds[74];
CRGB edge_leds[11];
enum STATE {BANK, SAMPLE, SEQUENCE, CTEMPO};
STATE state = BANK;
@ -60,9 +65,6 @@ int selected_sample = 0;
uint32_t lastTime = 0;
int32_t position = 0;
CRGB ui_leds[74];
CRGB edge_leds[11];
volatile bool setup0_finished = false;
volatile bool setup1_finished = false;
@ -76,6 +78,7 @@ volatile bool streams_loaded = false;
bool speakerToggle = false;
bool sd_card_detected = false;
volatile bool i2s_ready = false;
volatile bool codec_ready = false;
volatile bool config_loaded = false;
@ -164,11 +167,18 @@ size_t count;
size_t tape_write = 0;
void codec_transmit() {
for(int i = 0; i < count; i++){
for(int i = 0; i < count; i+=2){
if(streams_loaded){
for(int k = 0; k < NSTREAMS; k++){
int16_t sample = 0;
sample = stream[k].get();
buffer[i] += sample >> 2;
int32_t twosamples;
stream[k].wavefile.buffer.popDMA(&twosamples);
int16_t sample_l = sample_l = twosamples >> 16;
int16_t sample_r = sample_r = twosamples & 0xFFFF;
buffer[i] += sample_l >> 3;
buffer[i+1] += sample_r >> 3;
}
}
}
i2s.write((const uint8_t *)&buffer, count * sizeof(int16_t));
@ -181,33 +191,33 @@ void codec_receive(){
}
}
void pwm_audio_callback() {
while (ui_snd.availableForWrite()) {
if(ui_click || ui_beep) {
if(ui_beep) {
ui_snd.write(ui_beep_snd[counter]);
counter++;
if(counter == beep_length) {
counter = 0;
ui_beep = false;
}
continue;
}
if(ui_click) {
ui_snd.write(ui_click_snd[counter]);
counter++;
if(counter == click_length) {
counter = 0;
ui_click = false;
}
}
} else {
digitalWrite(7, LOW);
ui_snd.write(0);
counter = 0;
}
}
}
// void pwm_audio_callback() {
// while (ui_snd.availableForWrite()) {
// if(ui_click || ui_beep) {
// if(ui_beep) {
// ui_snd.write(ui_beep_snd[counter]);
// counter++;
// if(counter == beep_length) {
// counter = 0;
// ui_beep = false;
// }
// continue;
// }
// if(ui_click) {
// ui_snd.write(ui_click_snd[counter]);
// counter++;
// if(counter == click_length) {
// counter = 0;
// ui_click = false;
// }
// }
// } else {
// digitalWrite(7, LOW);
// ui_snd.write(0);
// counter = 0;
// }
// }
// }
bool load_ui_sounds(const char* file, int16_t *buffer, uint16_t &length){
if(SD.exists(file)) {
@ -326,18 +336,23 @@ Vibration vibration;
// -------------------------------------------- SETUP 0
void setup() {
Serial.begin();
delay(500);
i2s.setSysClk(48000);
i2s.onTransmit(codec_transmit);
i2s.onReceive(codec_receive);
Serial.begin();
while(!codec_ready){
Serial.println("0: Waiting for codec");
delay(250);
}
// i2s.onTransmit(codec_transmit);
// i2s.onReceive(codec_receive);
i2s.setDOUT(15);
i2s.setDIN(14);
i2s.setBCLK(16); // Note: LRCLK = BCLK + 1
i2s.setMCLK(18);
i2s.setMCLKmult(512); // 256 = 12.288.000Hz 512 = 25Mhz
i2s.setMCLKmult(512); // 256 = 12.288.000Hz 512 = 25MHz
i2s.swapClocks();
i2s.setFrequency(48000);
@ -345,6 +360,16 @@ void setup() {
i2s.setBuffers(6, BUFFERSIZE * sizeof(int16_t) / sizeof(uint32_t));
if(!i2s.begin(48000)){
Serial.println("0: I2S error!");
while(100);
}
Serial.println("0: I2S OK");
delay(100);
i2s_ready = true;
pinMode(12, OUTPUT); // speaker enable l
pinMode(13, OUTPUT); // speaker enable r
speaker(false);
@ -361,10 +386,10 @@ void setup() {
if(sdInitialized) loadConfiguration(config);
if(sdInitialized){
load_ui_sounds("/ui/click.wav", ui_click_snd, click_length);
load_ui_sounds("/ui/beep.wav", ui_beep_snd, beep_length);
}
// if(sdInitialized){
// load_ui_sounds("/ui/click.wav", ui_click_snd, click_length);
// load_ui_sounds("/ui/beep.wav", ui_beep_snd, beep_length);
// }
config_loaded = true;
@ -378,24 +403,8 @@ void setup() {
}
}
while(!codec_ready){
delay(250);
Serial.println("0: Waiting for codec");
}
if(!i2s.begin(48000)){
Serial.println("0: I2S error!");
while(100);
}
Serial.println("0: I2S OK");
Serial.print("0: STARTUP COMPLETE");
digitalWrite(6, HIGH);
delay(25);
digitalWrite(6, LOW);
delay(50);
digitalWrite(6, HIGH);
delay(25);
digitalWrite(6, LOW);
@ -403,12 +412,33 @@ void setup() {
}
void setup1(){
Serial.print("1: ENABLE I2S MCLK: ");
pinMode(19, OUTPUT); // MCLK enable
digitalWrite(19, HIGH); // enable MCLK
Serial.println("SUCCESS");
delay(100);
Serial.print("1: ENABLE CODEC: ");
pinMode(20, OUTPUT); // CODEC reset (enable)
digitalWrite(20, HIGH);
Serial.println("SUCCESS");
delay(100);
Serial.print("1: STARTUP");
Serial.print("1: INIT LEDS: ");
FastLED.addLeds<NEOPIXEL, 4>(edge_leds, 11);
FastLED.addLeds<NEOPIXEL, 5>(ui_leds, 74);
Serial.print("1: INIT WIRE: ");
Wire1.setSDA(2);
Wire1.setSCL(3);
Wire1.begin();
Serial.println("SUCCESS");
delay(100);
Serial.print("1: INIT CODEC: ");
codec.begin(&Wire1);
Serial.println("SUCCESS");
delay(500);
codec_ready = true;
Serial.print("1: INIT SPI: ");
SPI1.setSCK(10);
@ -420,12 +450,11 @@ void setup1(){
dac.begin();
Serial.println("SUCCESS");
Serial.print("1: INIT WIRE: ");
Wire1.setSDA(2);
Wire1.setSCL(3);
Wire1.begin();
Serial.println("SUCCESS");
delay(100);
while(!config_loaded){
delay(250);
Serial.println("1: Waiting for config");
}
Serial.print("1: INIT TCA: ");
TCA.begin();
@ -444,44 +473,30 @@ void setup1(){
ENC.resetCumulativePosition();
Serial.println("SUCCESS");
while(!config_loaded){
delay(250);
Serial.println("1: Waiting for config");
}
Serial.print("1: ENABLE I2S MCLK: ");
pinMode(19, OUTPUT); // MCLK enable
digitalWrite(19, HIGH); // enable MCLK
Serial.println("SUCCESS");
delay(10);
Serial.print("1: ENABLE CODEC: ");
pinMode(20, OUTPUT); // CODEC reset (enable)
digitalWrite(20, HIGH);
Serial.println("SUCCESS");
delay(10);
Serial.print("1: INIT CODEC: ");
codec.begin(&Wire1);
Serial.println("SUCCESS");
delay(100);
pinMode(6, OUTPUT); // Vibration Motor
pinMode(7, OUTPUT); // UI Amp Enable
ui_snd.onTransmit(pwm_audio_callback);
ui_snd.begin(UI_SAMPLERATE);
//ui_snd.onTransmit(pwm_audio_callback);
//ui_snd.begin(UI_SAMPLERATE);
digitalWrite(7, LOW); // UI amp off
Serial.print("1: INIT LEDS: ");
FastLED.addLeds<NEOPIXEL, 4>(edge_leds, 11);
FastLED.addLeds<NEOPIXEL, 5>(ui_leds, 74);
Serial.println("SUCCESS");
Serial.print("1: STARTUP COMPLETE");
codec_ready = true;
setup1_finished = true;
digitalWrite(6, HIGH);
delay(25);
digitalWrite(6, LOW);
}
uint32_t last = 0;
int bar = 0;
int bar_old = -1;
volatile int bar = 0;
volatile int bar_old = -1;
int set_bar = 0;
int16_t angle = 0;
int32_t position_last = 0;
@ -490,7 +505,7 @@ int16_t encdelta_raw = 0;
int16_t encdeltadiv = 512;
void loop1() {
if(setup0_finished && setup0_finished){
if(setup0_finished && setup1_finished){
position = ENC.getCumulativePosition();
angle = ENC.readAngle();
encdelta_raw += (position - position_last);
@ -514,13 +529,6 @@ void loop1() {
// Serial.print(" \t");
// Serial.println(encdelta);
uint32_t delta_bpm = floor((60000 / config.bpm) / 16);
if(millis() - last >= delta_bpm) {
bar = (bar + 1) % 16;
last = millis();
}
sd_card_detected = !digitalRead(21);
edge_leds[8] = sd_card_detected ? CRGB(0,10,0) : CRGB(10,0,0);
@ -709,19 +717,6 @@ void loop1() {
}
if(bar != bar_old){
if(steps[bar].len > 0) {
steps[bar].trigger();
Serial.print("trigger ");
Serial.println(bar);
}
}
// // set active LED ring LED
// for(int i = 0; i < active_led_ring; i++){
// ui_leds[lut_ring_ccw[i]] = CRGB(config.ring_color.r, config.ring_color.g, config.ring_color.b);
// }
FastLED.show();
if(buttonChanged){
@ -730,8 +725,6 @@ void loop1() {
}
}
//delay(20); // wait 1ms
bar_old = bar;
vibration.update();
position_last = position;
delay(1);
@ -741,34 +734,51 @@ void loop1() {
void loop(){
if(setup1_finished && setup0_finished){
// int16_t l, r;
// i2s.read16(&l, &r);
// for(int k = 0; k < NSTREAMS; k++){
// int16_t sample_l = 0;
// int16_t sample_r = 0;
// sample_l = stream[k].get();
// sample_r = stream[k].get();
// l += sample_l >> 2;
// r += sample_r >> 2;
// }
// i2s.write16(l, r);
// i2s.flush();
// //Serial.println(sc);
// // Serial.print(" ");
// // Serial.print(l);
// // Serial.print(" ");
// // Serial.println(r);
uint32_t delta_bpm = floor((60000 / config.bpm) / 16);
uint32_t delta = millis() - last;
if(delta >= delta_bpm) {
bar = (bar + 1) % 16;
if(steps[bar].len > 0) {
steps[bar].trigger();
// Serial.print("trigger ");
// Serial.println(bar);
}
// Serial.print(delta_bpm);
// Serial.print(" ");
// Serial.println(delta);
last = millis();
}
if(streams_loaded) {
for(int i = 0; i < NSTREAMS; i++){
stream[i].stream();
}
}
int16_t sample_l = 0;
int16_t sample_r = 0;
if(streams_loaded){
for(int k = 0; k < NSTREAMS; k++){
sample_l += stream[k].get() >> 2;
sample_r += stream[k].get() >> 2;
}
}
int16_t l = 0, r = 0;
//i2s.read16(&l, &r);
l += sample_l;
r += sample_r;
i2s.write16(l, r);
if(i2s.getOverflow()) Serial.println("overflow");
if(i2s.getUnderflow()) Serial.println("underflow");
//sc++;
bar_old = bar;
}
}

24
soundcube-firmware/wavestream.h
View File

@ -78,6 +78,7 @@ struct WaveFile{
uint8_t samplebyte[blockalign];
file.read(samplebyte, blockalign);
if(!file.available() && loop) file.seek(44, SeekSet);
if(!file.available() && !loop) {
file.seek(44, SeekSet);
@ -91,6 +92,19 @@ struct WaveFile{
return true;
}
bool readblockDMA(){
void *bufferStart = buffer.getWritePointer();
file.read((uint8_t*)bufferStart, 4);
if(!file.available() && loop) file.seek(44, SeekSet);
if(!file.available() && !loop) {
file.seek(44, SeekSet);
return false;
}
return true;
}
int16_t get(){
return buffer.pop();
}
@ -111,7 +125,7 @@ struct WaveFile{
uint16_t blockalign = 0;
uint16_t bitspersample = 0;
RingBuffer<int16_t> buffer;
RingBuffer buffer;
};
class WaveStream{
@ -119,7 +133,7 @@ class WaveStream{
WaveStream(){}
void begin(){
wavefile.buffer.setSize(8000);
wavefile.buffer.setSize(1024);
wavefile.buffer.begin();
}
@ -145,10 +159,10 @@ class WaveStream{
void stream(){
if(!wavefile.buffer.isFull() && playing){
int cnt = 0;
while (!wavefile.buffer.isFull() && cnt < 6000) {
bool ok = wavefile.readblock();
while (!wavefile.buffer.isFull() && cnt < 1024) {
bool ok = wavefile.readblockDMA();
if(!ok) playing = false;
cnt++;
cnt += 2;
}
}
}