wirtz
/
MicroDexed
mirror of https://codeberg.org/dcoredump/MicroDexed.git
1
1
Fork 0
Code Issues Releases Wiki Activity

Fixes for external delay (see

Browse Source 
https://forum.pjrc.com/threads/29276-Limits-of-delay-effect-in-audio-library?p=319880#post319880)
dev
Holger Wirtz 1 year ago
parent 42ca67a8dd
commit dfd01d467a
5 changed files with 52 additions and 283 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 17
      .theia/launch.json
  2. 2
      MicroDexed.ino
  3. 37
      third-party/effect_delay_ext8/examples/AudioDelay8M/AudioDelay8M.ino
  4. 231
      third-party/effect_delay_ext8/src/effect_delay_ext8.cpp
  5. 48
      third-party/effect_delay_ext8/src/effect_delay_ext8.h

17
.theia/launch.json
Unescape View File

@ -0,0 +1,17 @@
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
"version": "0.2.0",
"configurations": [
{
"cwd": "${workspaceFolder}",
"executable": "./bin/executable.elf",
"name": "Debug with ST-Util",
"request": "launch",
"type": "cortex-debug",
"runToEntryPoint": "main",
"showDevDebugOutput": "none",
"servertype": "stutil"
}
]
}

2
MicroDexed.ino
Unescape View File

@ -242,7 +242,7 @@ FLASHMEM void create_audio_dexed_chain(uint8_t instance_id) {
chorus_mixer[instance_id] = new AudioMixer<2>();
delay_fb_mixer[instance_id] = new AudioMixer<2>();
#if defined(USE_DELAY_8M)
delay_fx[instance_id] = new AudioEffectDelayExternal8(AUDIO_MEMORY8_PSRAM_8MB, DELAY_MAX_TIME);
delay_fx[instance_id] = new AudioEffectDelayExternal8(AUDIO_MEMORY_PSRAM64, DELAY_MAX_TIME);
#else
delay_fx[instance_id] = new AudioEffectDelay();
#endif

37
third-party/effect_delay_ext8/examples/AudioDelay8M/AudioDelay8M.ino vendored
Unescape View File

@ -1,21 +1,22 @@
#include <Arduino.h>
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <effect_delay_ext8.h>
// GUItool: begin automatically generated code
AudioSynthWaveformSine sine1; //xy=382,432
AudioAmplifier amp1; //xy=606,441
AudioEffectDelayExternal8 delayExt1(AUDIO_MEMORY8_PSRAM_8MB,20000); //xy=770,321
AudioMixer4 mixer1; //xy=983,386
AudioOutputI2S i2s1; //xy=1131,343
AudioConnection patchCord1(sine1, amp1);
AudioConnection patchCord2(amp1, delayExt1);
AudioConnection patchCord3(amp1, 0, mixer1, 1);
AudioConnection patchCord4(delayExt1, 0, mixer1, 0);
AudioConnection patchCord5(mixer1, 0, i2s1, 0);
AudioConnection patchCord6(mixer1, 0, i2s1, 1);
AudioControlSGTL5000 sgtl5000; //xy=943,541
AudioSynthWaveformSine sine1; //xy=382,432
AudioAmplifier amp1; //xy=606,441
AudioEffectDelayExternal8 delayExt1(AUDIO_MEMORY_PSRAM64, 20000); //xy=770,321
AudioMixer4 mixer1; //xy=983,386
AudioOutputI2S i2s1; //xy=1131,343
AudioConnection patchCord1(sine1, amp1);
AudioConnection patchCord2(amp1, delayExt1);
AudioConnection patchCord3(amp1, 0, mixer1, 1);
AudioConnection patchCord4(delayExt1, 0, mixer1, 0);
AudioConnection patchCord5(mixer1, 0, i2s1, 0);
AudioConnection patchCord6(mixer1, 0, i2s1, 1);
AudioControlSGTL5000 sgtl5000; //xy=943,541
// GUItool: end automatically generated code
@ -32,19 +33,19 @@ void setup() {
sgtl5000.dacVolume(1.0);
sgtl5000.unmuteHeadphone();
sgtl5000.unmuteLineout();
sgtl5000.volume(0.8,0.8); // Headphone volume
sgtl5000.volume(0.8, 0.8); // Headphone volume
sgtl5000.audioProcessorDisable();
sgtl5000.autoVolumeDisable();
sgtl5000.surroundSoundDisable();
sgtl5000.enhanceBassDisable();
delayExt1.delay(0,333);
delayExt1.delay(1,664);
delayExt1.delay(2,1000);
delayExt1.delay(0, 333);
delayExt1.delay(1, 664);
delayExt1.delay(2, 1000);
sine1.amplitude(1.0);
sine1.frequency(440);
sine1.phase(0.0);
mixer1.gain(0,0.5);
mixer1.gain(1,1.0);
mixer1.gain(0, 0.5);
mixer1.gain(1, 1.0);
amp1.gain(1.0);
Serial.println("<setup end>");

231
third-party/effect_delay_ext8/src/effect_delay_ext8.cpp vendored
Unescape View File

@ -24,51 +24,10 @@
* THE SOFTWARE.
*/
/* Added AUDIO_MEMORY_PSRAM_8MB
* see https://forum.pjrc.com/threads/29276-Limits-of-delay-effect-in-audio-library/page5?highlight=APS6404L-3SQR
* wirtz@parasitstudio.de
*/
#include <Arduino.h>
#include "extmem.h"
#include "effect_delay_ext8.h"
//#define INTERNAL_TEST
// While 20 MHz (Teensy actually uses 16 MHz in most cases) and even 24 MHz
// have worked well in testing at room temperature with 3.3V power, to fully
// meet all the worst case timing specs, the SPI clock low time would need
// to be 40ns (12.5 MHz clock) for the single chip case and 51ns (9.8 MHz
// clock) for the 6-chip memoryboard with 74LCX126 buffers.
//
// Timing analysis and info is here:
// https://forum.pjrc.com/threads/29276-Limits-of-delay-effect-in-audio-library?p=97506&viewfull=1#post97506
#define SPISETTING SPISettings(20000000, MSBFIRST, SPI_MODE0)
// Use these with the audio adaptor board (should be adjustable by the user...)
//#define SPIRAM_MOSI_PIN 7
//#define SPIRAM_MISO_PIN 12
//#define SPIRAM_SCK_PIN 14
//#define SPIRAM_CS_PIN 6
//#define SPIRAM_MOSI_PIN 11 //-----------------
//#define SPIRAM_MISO_PIN 12 // for Teensy 4.1 audio board
//#define SPIRAM_SCK_PIN 13 //
//#define SPIRAM_CS_PIN 36 //-----------------
//
#define SPIRAM_MOSI_PIN 50 //----------------- https://forum.pjrc.com/attachment.php?attachmentid=20853&d=1593888859
#define SPIRAM_MISO_PIN 54 // for Teensy 4.1
#define SPIRAM_SCK_PIN 49 //-----------------
#define SPIRAM_CS_PIN 52 // CS???
//#define SPIRAM_CS_PIN 36 // CS0-2
//#define SPIRAM_CS_PIN 37 // CS0-1
//#define SPIRAM_CS_PIN 44 // CS2
//#define SPIRAM_CS_PIN 10 // CS0
//#define SPIRAM_CS_PIN 0 // CS1
//#define SPIRAM_CS_PIN 38 // CS1-0
//
#define MEMBOARD_CS0_PIN 2
#define MEMBOARD_CS1_PIN 3
#define MEMBOARD_CS2_PIN 4
void AudioEffectDelayExternal8::update(void)
{
@ -77,7 +36,7 @@ void AudioEffectDelayExternal8::update(void)
// grab incoming data and put it into the memory
block = receiveReadOnly();
if (memory_type >= AUDIO_MEMORY8_UNDEFINED) {
if (memory_type >= AUDIO_MEMORY_UNDEFINED) {
// ignore input and do nothing if undefined memory type
release(block);
return;
@ -134,189 +93,3 @@ void AudioEffectDelayExternal8::update(void)
}
}
uint32_t AudioEffectDelayExternal8::allocated[2] = {0, 0};
void AudioEffectDelayExternal8::initialize(AudioEffectDelayMemoryType8_t type, uint32_t samples)
{
uint32_t memsize, avail;
activemask = 0;
head_offset = 0;
memory_type = type;
SPI.setMOSI(SPIRAM_MOSI_PIN);
SPI.setMISO(SPIRAM_MISO_PIN);
SPI.setSCK(SPIRAM_SCK_PIN);
SPI.setCS(SPIRAM_CS_PIN); // added for Teensy 4.1
//
SPI.begin();
if (type == AUDIO_MEMORY8_23LC1024) {
#ifdef INTERNAL_TEST
memsize = 8000;
#else
memsize = 65536;
#endif
pinMode(SPIRAM_CS_PIN, OUTPUT);
digitalWriteFast(SPIRAM_CS_PIN, HIGH);
} else if (type == AUDIO_MEMORY8_MEMORYBOARD) {
memsize = 393216;
pinMode(MEMBOARD_CS0_PIN, OUTPUT);
pinMode(MEMBOARD_CS1_PIN, OUTPUT);
pinMode(MEMBOARD_CS2_PIN, OUTPUT);
digitalWriteFast(MEMBOARD_CS0_PIN, LOW);
digitalWriteFast(MEMBOARD_CS1_PIN, LOW);
digitalWriteFast(MEMBOARD_CS2_PIN, LOW);
} else if (type == AUDIO_MEMORY8_CY15B104) {
#ifdef INTERNAL_TEST
memsize = 8000;
#else
memsize = 262144;
#endif
pinMode(SPIRAM_CS_PIN, OUTPUT);
digitalWriteFast(SPIRAM_CS_PIN, HIGH);
} else if (type == AUDIO_MEMORY8_PSRAM_8MB) {
#ifdef INTERNAL_TEST
memsize = 8000;
#else
memsize = (2^23); // 8388608 bytes
#endif
pinMode(SPIRAM_CS_PIN, OUTPUT);
digitalWriteFast(SPIRAM_CS_PIN, HIGH);
} else {
return;
}
avail = memsize - allocated[type];
if (avail < AUDIO_BLOCK_SAMPLES*2+1) {
memory_type = AUDIO_MEMORY8_UNDEFINED;
return;
}
if (samples > avail) samples = avail;
memory_begin = allocated[type];
allocated[type] += samples;
memory_length = samples;
zero(0, memory_length);
}
#ifdef INTERNAL_TEST
static int16_t testmem[8000]; // testing only
#endif
void AudioEffectDelayExternal8::read(uint32_t offset, uint32_t count, int16_t *data)
{
uint32_t addr = memory_begin + offset;
#ifdef INTERNAL_TEST
while (count) { *data++ = testmem[addr++]; count--; } // testing only
#else
if (memory_type == AUDIO_MEMORY8_23LC1024 ||
memory_type == AUDIO_MEMORY8_CY15B104 ||
memory_type == AUDIO_MEMORY8_PSRAM_8MB)
{
addr *= 2;
SPI.beginTransaction(SPISETTING);
digitalWriteFast(SPIRAM_CS_PIN, LOW);
SPI.transfer16((0x03 << 8) | (addr >> 16));
SPI.transfer16(addr & 0xFFFF);
while (count) {
*data++ = (int16_t)(SPI.transfer16(0));
count--;
}
digitalWriteFast(SPIRAM_CS_PIN, HIGH);
SPI.endTransaction();
} else if (memory_type == AUDIO_MEMORY8_MEMORYBOARD) {
SPI.beginTransaction(SPISETTING);
while (count) {
uint32_t chip = (addr >> 16) + 1;
digitalWriteFast(MEMBOARD_CS0_PIN, chip & 1);
digitalWriteFast(MEMBOARD_CS1_PIN, chip & 2);
digitalWriteFast(MEMBOARD_CS2_PIN, chip & 4);
uint32_t chipaddr = (addr & 0xFFFF) << 1;
SPI.transfer16((0x03 << 8) | (chipaddr >> 16));
SPI.transfer16(chipaddr & 0xFFFF);
uint32_t num = 0x10000 - (addr & 0xFFFF);
if (num > count) num = count;
count -= num;
addr += num;
do {
*data++ = (int16_t)(SPI.transfer16(0));
} while (--num > 0);
}
digitalWriteFast(MEMBOARD_CS0_PIN, LOW);
digitalWriteFast(MEMBOARD_CS1_PIN, LOW);
digitalWriteFast(MEMBOARD_CS2_PIN, LOW);
SPI.endTransaction();
}
#endif
}
void AudioEffectDelayExternal8::write(uint32_t offset, uint32_t count, const int16_t *data)
{
uint32_t addr = memory_begin + offset;
#ifdef INTERNAL_TEST
while (count) { testmem[addr++] = *data++; count--; } // testing only
#else
if (memory_type == AUDIO_MEMORY8_23LC1024 ||
memory_type == AUDIO_MEMORY8_PSRAM_8MB ) {
addr *= 2;
SPI.beginTransaction(SPISETTING);
digitalWriteFast(SPIRAM_CS_PIN, LOW);
SPI.transfer16((0x02 << 8) | (addr >> 16));
SPI.transfer16(addr & 0xFFFF);
while (count) {
int16_t w = 0;
if (data) w = *data++;
SPI.transfer16(w);
count--;
}
digitalWriteFast(SPIRAM_CS_PIN, HIGH);
SPI.endTransaction();
} else if (memory_type == AUDIO_MEMORY8_CY15B104) {
addr *= 2;
SPI.beginTransaction(SPISETTING);
digitalWriteFast(SPIRAM_CS_PIN, LOW);
SPI.transfer(0x06); //write-enable before every write
digitalWriteFast(SPIRAM_CS_PIN, HIGH);
asm volatile ("NOP\n NOP\n NOP\n NOP\n NOP\n NOP\n");
digitalWriteFast(SPIRAM_CS_PIN, LOW);
SPI.transfer16((0x02 << 8) | (addr >> 16));
SPI.transfer16(addr & 0xFFFF);
while (count) {
int16_t w = 0;
if (data) w = *data++;
SPI.transfer16(w);
count--;
}
digitalWriteFast(SPIRAM_CS_PIN, HIGH);
SPI.endTransaction();
} else if (memory_type == AUDIO_MEMORY8_MEMORYBOARD) {
SPI.beginTransaction(SPISETTING);
while (count) {
uint32_t chip = (addr >> 16) + 1;
digitalWriteFast(MEMBOARD_CS0_PIN, chip & 1);
digitalWriteFast(MEMBOARD_CS1_PIN, chip & 2);
digitalWriteFast(MEMBOARD_CS2_PIN, chip & 4);
uint32_t chipaddr = (addr & 0xFFFF) << 1;
SPI.transfer16((0x02 << 8) | (chipaddr >> 16));
SPI.transfer16(chipaddr & 0xFFFF);
uint32_t num = 0x10000 - (addr & 0xFFFF);
if (num > count) num = count;
count -= num;
addr += num;
do {
int16_t w = 0;
if (data) w = *data++;
SPI.transfer16(w);
} while (--num > 0);
}
digitalWriteFast(MEMBOARD_CS0_PIN, LOW);
digitalWriteFast(MEMBOARD_CS1_PIN, LOW);
digitalWriteFast(MEMBOARD_CS2_PIN, LOW);
SPI.endTransaction();
}
#endif
}

48
third-party/effect_delay_ext8/src/effect_delay_ext8.h vendored
Unescape View File

@ -23,39 +23,28 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/* Added AUDIO_MEMORY_PSRAM_8MB
* see https://forum.pjrc.com/threads/29276-Limits-of-delay-effect-in-audio-library/page5?highlight=APS6404L-3SQR
* wirtz@parasitstudio.de
*/
#ifndef effect_delay_ext8_h_
#define effect_delay_ext8_h_
#include "Arduino.h"
#include "AudioStream.h"
#include "spi_interrupt.h"
#include "extmem.h"
enum AudioEffectDelayMemoryType8_t {
AUDIO_MEMORY8_23LC1024 = 0, // 128k x 8 S-RAM
AUDIO_MEMORY8_MEMORYBOARD = 1,
AUDIO_MEMORY8_CY15B104 = 2, // 512k x 8 F-RAM
AUDIO_MEMORY8_PSRAM_8MB = 3, // 8192k x 8 PS-RAM
AUDIO_MEMORY8_UNDEFINED = 4
};
class AudioEffectDelayExternal8 : public AudioStream
class AudioEffectDelayExternal8 : public AudioStream, public AudioExtMem
{
public:
AudioEffectDelayExternal8() : AudioStream(1, inputQueueArray) {
initialize(AUDIO_MEMORY8_23LC1024, 65536);
}
AudioEffectDelayExternal8(AudioEffectDelayMemoryType8_t type, float milliseconds=1e6)
: AudioStream(1, inputQueueArray) {
uint32_t n = (milliseconds*(AUDIO_SAMPLE_RATE_EXACT/1000.0f))+0.5f;
initialize(type, n);
}
AudioEffectDelayExternal8(AudioEffectDelayMemoryType_t type, float milliseconds=1e6)
: AudioStream(1, inputQueueArray),
AudioExtMem(type, (milliseconds*(AUDIO_SAMPLE_RATE_EXACT/1000.0f))+0.5f),
activemask(0)
{}
AudioEffectDelayExternal8() : AudioEffectDelayExternal8(AUDIO_MEMORY_23LC1024) {}
~AudioEffectDelayExternal8() {}
void delay(uint8_t channel, float milliseconds) {
if (channel >= 8 || memory_type >= AUDIO_MEMORY8_UNDEFINED) return;
if (channel >= 8 || memory_type >= AUDIO_MEMORY_UNDEFINED) return;
if (milliseconds < 0.0f) milliseconds = 0.0f;
uint32_t n = (milliseconds*(AUDIO_SAMPLE_RATE_EXACT/1000.0f))+0.5f;
n += AUDIO_BLOCK_SAMPLES;
@ -63,30 +52,19 @@ public:
n = memory_length - AUDIO_BLOCK_SAMPLES;
delay_length[channel] = n;
uint8_t mask = activemask;
if (activemask == 0) AudioStartUsingSPI();
if (activemask == 0 && IS_SPI_TYPE) AudioStartUsingSPI();
activemask = mask | (1<<channel);
}
void disable(uint8_t channel) {
if (channel >= 8) return;
uint8_t mask = activemask & ~(1<<channel);
activemask = mask;
if (mask == 0) AudioStopUsingSPI();
if (mask == 0 && IS_SPI_TYPE) AudioStopUsingSPI();
}
virtual void update(void);
private:
void initialize(AudioEffectDelayMemoryType8_t type, uint32_t samples);
void read(uint32_t address, uint32_t count, int16_t *data);
void write(uint32_t address, uint32_t count, const int16_t *data);
void zero(uint32_t address, uint32_t count) {
write(address, count, NULL);
}
uint32_t memory_begin; // the first address in the memory we're using
uint32_t memory_length; // the amount of memory we're using
uint32_t head_offset; // head index (incoming) data into external memory
uint32_t delay_length[8]; // # of sample delay for each channel (128 = no delay)
uint8_t activemask; // which output channels are active
uint8_t memory_type; // 0=23LC1024, 1=Frank's Memoryboard
static uint32_t allocated[2];
audio_block_t *inputQueueArray[1];
};

Write Preview
Loading…
Cancel
Save