Playing and controlling MP3s works great. \o/

This commit is contained in:
Fabian Schlenz 2019-08-06 20:50:11 +02:00
parent 2a7dd5d8a1
commit b8d4d6bb92
12 changed files with 432 additions and 193 deletions

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@ -1,14 +0,0 @@
#pragma once
#include "controller.h"
class Buttons {
private:
unsigned long _debounce_until = 0;
Controller* _controller;
void _debounce();
public:
Buttons(Controller* c) : _controller(c) {}
void setup();
void loop();
};

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@ -34,3 +34,7 @@
#define PIN_BTN_TRACK_PREV D7
#define DEBOUNCE_MILLIS 100
#define VOLUME_DEFAULT 0xA0
#define VOLUME_MIN 0x60
#define VOLUME_MAX 0xC0
#define VOLUME_STEP 0x08

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@ -1,17 +1,18 @@
#pragma once
#include <Arduino.h>
#include "config.h"
#include "player.h"
#include "sd_card.h"
#include <MFRC522.h>
class Controller {
private:
MFRC522* _rfid;
bool _rfid_enabled = true;
void _check_rfid();
void _check_serial();
Player* _player;
SDCard* _sd_card;
public:
Controller(Player* p, SDCard* c) : _player(p), _sd_card(c) {}
void vol_up();
void vol_down();
void track_next();
void track_prev();
Controller(Player* p);
void loop();
};

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@ -1,29 +1,80 @@
#pragma once
#include "sd_card.h"
#include "config.h"
#include <SPI.h>
#include <SD.h>
#include <list>
#include <map>
#define SCI_MODE 0x00
#define SCI_STATUS 0x01
#define SCI_CLOCKF 0x03
#define SCI_DECODE_TIME 0x04
#define SCI_VOL 0x0B
#define SCI_WRAMADDR 0x07
#define SCI_WRAM 0x06
#define CMD_WRITE 0x02
#define CMD_READ 0x03
#define ADDR_ENDBYTE 0x1E06
#define SM_CANCEL 0x0008
#define SS_DO_NOT_JUMP 0x8000
#define XRESET PIN_VS1053_XRESET
#define DREQ PIN_VS1053_DREQ
#define XCS PIN_VS1053_XCS
#define XDCS PIN_VS1053_XDCS
class Player {
private:
SDCard* _sd_card;
enum state { uninitialized, idle, playing, stopping };
struct album_state {
uint8_t index;
uint32_t position;
};
void _reset();
void _init();
void _wait();
uint16_t _read_register(uint8_t address, uint32_t spi_speed, uint16_t t);//=SPI_CLOCK_DIV4);
void _write_register(uint8_t address, uint16_t value, uint32_t spi_speed);//=SPI_CLOCK_DIV2);
uint16_t _read_control_register(uint8_t address);
void _write_control_register(uint8_t address, uint16_t value);
void _write_data(uint8_t* data);
uint16_t _read_wram(uint16_t address);
state _state = state::uninitialized;
void _refill();
void _flush_and_cancel();
void _flush(uint bytes);
void _set_last_track(const char* album, uint8_t track, uint32_t position);
std::map<String, album_state> _last_tracks;
void _finish_playing();
void _finish_stopping();
void _mute();
void _unmute();
SPISettings _spi_settings_slow = SPISettings(250000, MSBFIRST, SPI_MODE0);
SPISettings _spi_settings_fast = SPISettings(4000000, MSBFIRST, SPI_MODE0);
SPISettings* _spi_settings = &_spi_settings_slow;
std::list<String> _files_in_dir(String dir);
File _file;
uint8_t _buffer[32];
String _playing_album;
uint8_t _playing_index;
uint _refills;
int8_t _end_byte;
uint8_t _volume;
uint16_t _stop_delay;
uint32_t _skip_to;
public:
Player(SDCard* c);
Player();
void vol_up();
void vol_down();
void track_next();
void track_prev();
bool play_album(String album);
bool play_song(String album, uint8_t song_index, uint32_t offset=0);
void stop();
bool loop();
void set_volume(uint8_t vol, bool save = true);
};

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@ -1,8 +0,0 @@
#pragma once
#include <SD.h>
#include "config.h"
class SDCard {
public:
SDCard();
};

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@ -1,5 +1,9 @@
#pragma once
#include <Arduino.h>
#include <SPI.h>
#include "config.h"
class SPIMaster {
public:
static void init() {
@ -16,9 +20,9 @@ public:
static void printStatus() {
Serial.printf("CS state: SD:%d, VS1053_XCS:%d, VS1053_XDCS:%d\n",
digitalRead(PIN_SD_CS),
digitalRead(PIN_VS1053_XCS),
digitalRead(PIN_VS1053_XDCS));
digitalRead(PIN_SD_CS),
digitalRead(PIN_VS1053_XCS),
digitalRead(PIN_VS1053_XDCS));
}
static void disable() {

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@ -12,5 +12,6 @@
platform = espressif8266
board = esp12e
framework = arduino
upload_speed = 512000
lib_deps = 63
upload_port = /dev/cu.wchusbserial1420
upload_speed = 921600

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@ -1,46 +0,0 @@
#include <Arduino.h>
#include "buttons.h"
#include "config.h"
void Buttons::setup() {
pinMode(PIN_BTN_VOL_UP, INPUT);
pinMode(PIN_BTN_VOL_DOWN, INPUT);
pinMode(PIN_BTN_TRACK_NEXT, INPUT);
pinMode(PIN_BTN_TRACK_PREV, INPUT);
}
void Buttons::_debounce() {
unsigned long now = millis();
_debounce_until = now + DEBOUNCE_MILLIS;
if (_debounce_until < now) _debounce_until = now;
}
void Buttons::loop() {
bool vol_up = digitalRead(PIN_BTN_VOL_UP);
bool vol_down = digitalRead(PIN_BTN_VOL_DOWN);
bool track_next = digitalRead(PIN_BTN_TRACK_NEXT);
bool track_prev = digitalRead(PIN_BTN_TRACK_PREV);
if (_debounce_until > millis()) {
if (vol_up || vol_down || track_next || track_prev) {
_debounce();
}
return;
}
if (vol_up) {
_controller->vol_up();
} else if (vol_down) {
_controller->vol_down();
} else if (track_next) {
_controller->track_next();
} else if (track_prev) {
_controller->track_prev();
} else {
// If we reach this, no button was pressed and we are not debouncing -> do nothing.
return;
}
// If we reach this, some button was pressed. So enable debouncing.
_debounce();
}

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@ -1,17 +1,49 @@
#include "controller.h"
#include "spi_master.h"
void Controller::vol_up() {
_player->vol_up();
Controller::Controller(Player* p) {
_player = p;
_rfid = new MFRC522(PIN_RC522_CS, MFRC522::UNUSED_PIN);
SPIMaster::enable(PIN_RC522_CS);
Serial.println("Initializing MFRC522...");
_rfid->PCD_Init();
_rfid->PCD_DumpVersionToSerial();
SPIMaster::disable();
}
void Controller::vol_down() {
_player->vol_down();
void Controller::loop() {
_check_rfid();
_check_serial();
}
void Controller::track_next() {
_player->track_next();
void Controller::_check_rfid() {
SPIMaster::enable(PIN_RC522_CS);
if (!_rfid->PICC_IsNewCardPresent()) {
return;
}
if (!_rfid->PICC_ReadCardSerial()) {
return;
}
_rfid->PICC_DumpToSerial(&(_rfid->uid));
SPIMaster::disable();
}
void Controller::track_prev() {
_player->track_prev();
void Controller::_check_serial() {
if (Serial.available() > 0) {
char c = Serial.read();
if (c == 'n') {
_player->track_next();
} else if (c=='p') {
_player->track_prev();
} else if (c=='s') {
_player->stop();
} else if (c=='+') {
_player->vol_up();
} else if (c=='-') {
_player->vol_down();
} else if (c==' ') {
_player->play_album("12345678");
}
}
}

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@ -1,42 +1,16 @@
#include <Arduino.h>
#include <SPI.h>
#include <SD.h>
#include "config.h"
#include "buttons.h"
#include "controller.h"
#include "player.h"
#include "sd_card.h"
#include "spi_master.h"
Buttons* buttons;
Controller* controller;
Player* player;
SDCard* sd;
void printDirectory(File dir, int numTabs) {
while (true) {
File entry = dir.openNextFile();
if (! entry) {
// no more files
break;
}
for (uint8_t i = 0; i < numTabs; i++) {
Serial.print('\t');
}
Serial.print(entry.name());
if (entry.isDirectory()) {
Serial.println("/");
printDirectory(entry, numTabs + 1);
} else {
// files have sizes, directories do not
Serial.print("\t\t");
Serial.println(entry.size(), DEC);
}
entry.close();
}
}
void setup() {
delay(500);
Serial.begin(74880);
Serial.println("Starting.");
@ -44,12 +18,22 @@ void setup() {
SPI.begin();
SPIMaster::init();
sd = new SDCard();
player = new Player(sd);
controller = new Controller(player, sd);
buttons = new Buttons(controller);
SPIMaster::enable(PIN_SD_CS);
if (SD.begin(PIN_SD_CS)) {
Serial.println("SD card initialized.");
} else {
Serial.println("Could not initialize SD card. Halting.");
while(1);
}
player = new Player();
controller = new Controller(player);
//player->play_album("12345678");
}
void loop() {
bool more_data_needed = player->loop();
if (more_data_needed) return;
controller->loop();
}

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@ -3,7 +3,9 @@
#include "player.h"
#include "spi_master.h"
Player::Player(SDCard* c) {
//Player::_spi_settings
Player::Player() {
pinMode(XRESET, OUTPUT);
digitalWrite(XRESET, HIGH);
pinMode(DREQ, INPUT);
@ -13,87 +15,324 @@ Player::Player(SDCard* c) {
void Player::_reset() {
digitalWrite(XRESET, LOW);
delay(50);
delay(100);
digitalWrite(XRESET, HIGH);
delay(50);
delay(100);
_state = uninitialized;
_spi_settings = &_spi_settings_slow; // After reset, communication has to be slow
}
void Player::_init() {
SPI.setClockDivider(SPI_CLOCK_DIV16);
SPIMaster::disable();
_reset();
uint16_t result;
for(uint8_t x=0; x<255; x++) {
result = _read_register(SCI_MODE, 0, x);
if (result != 0) Serial.printf("Try %3d: 0x%04X\n", x, result);
uint16_t result = _read_control_register(SCI_MODE);
Serial.printf("SCI_MODE: 0x%04X\n", result);
if (result != 0x4800) {
Serial.printf("Error: SCI_MODE was 0x%04X, expected was 0x4800.\n", result);
return;
}
delay(10);
/*_read_register(SCI_MODE, SPI_CLOCK_DIV16); // First read fails for some unknown reason...
_read_register(SCI_MODE, SPI_CLOCK_DIV16);
_read_register(SCI_STATUS, SPI_CLOCK_DIV16);
_read_register(SCI_STATUS, SPI_CLOCK_DIV16);
_read_register(SCI_MODE, SPI_CLOCK_DIV16);
_read_register(SCI_MODE, SPI_CLOCK_DIV16);
uint16_t response = _read_register(SCI_MODE, SPI_CLOCK_DIV16);
if (response != 0x4800) {
Serial.printf("Initialization failed. SCI_MODE was: 0x%04X. Expected: 0x4800\n", response);
result = _read_control_register(SCI_STATUS);
Serial.printf("SCI_STATUS: 0x%04X\n", result);
if (result != 0x0040 && result != 0x0048) {
Serial.printf("Error: SCI_STATUS was 0x%04X, expected was 0x0040 or 0x0048.\n", result);
return;
}*/
/*_write_register(SCI_CLOCKF, 0x6000); // Set multiplier to 3x
}
result = _read_control_register(SCI_CLOCKF);
Serial.printf("SCI_CLOCKF: 0x%04X\n", result);
Serial.println("VS1053 Init looking good.");
Serial.println("Upping VS1053 multiplier...");
_write_control_register(SCI_CLOCKF, 0x6000);
delay(10);
response = _read_register(SCI_CLOCKF);
if (response != 0x6000) {
Serial.printf("Initialization failed. SCI_CLOCKF was: 0x%04X. Expected: 0x6000\n", response);
_spi_settings = &_spi_settings_fast;
result = _read_control_register(SCI_CLOCKF);
Serial.printf("SCI_CLOCKF: 0x%04X\n", result);
if (result != 0x6000) {
Serial.printf("Error: SCI_CLOCKF was 0x%04X, expected was 0x6000.\n", result);
return;
}*/
//Serial.println(result, HEX);
}
_end_byte = (int8_t)(_read_wram(ADDR_ENDBYTE) & 0xFF);
set_volume(VOLUME_DEFAULT);
Serial.println("VS1053 initialization completed.");
_state = idle;
}
inline void Player::_wait() {
delayMicroseconds(100);
//Serial.print("Waiting for DREQ...");
while(!digitalRead(DREQ));
//Serial.printf(" done (%d cycles).\n", i);
}
uint16_t Player::_read_register(uint8_t address, uint32_t spi_speed, uint16_t t) {
Serial.printf("Try %03d, querying register 0x%02X...", t, address);
//SPI.setClockDivider(spi_speed);
if (t & (1<<1)) _wait();
SPIMaster::enable(PIN_VS1053_XCS);
if (t & (1<<2)) _wait();
//_wait();
uint16_t Player::_read_control_register(uint8_t address) {
_wait();
SPIMaster::enable(XCS);
SPI.beginTransaction(*_spi_settings);
SPI.transfer(CMD_READ);
if (t & (1<<3)) _wait();
SPI.transfer(address);
if (t & (1<<4)) _wait();
uint8_t b1 = SPI.transfer(0xFF);
if (t & (1<<5)) _wait();
_wait();
uint8_t b2 = SPI.transfer(0xFF);
if (t & (1<<6)) _wait();
_wait();
SPI.endTransaction();
SPIMaster::disable();
uint16_t result = b1 << 8 | b2;
Serial.printf("Response: 0x%02X 0x%02X -> 0x%04X\n", b1, b2, result);
if (t & (1<<7)) delay(10);
return (b1 << 8) | b2;
}
//_wait();
//SPIMaster::disable();
void Player::_write_control_register(uint8_t address, uint16_t value) {
uint8_t b1 = value >> 8;
uint8_t b2 = value & 0xFF;
_wait();
SPIMaster::enable(XCS);
SPI.beginTransaction(*_spi_settings);
SPI.transfer(CMD_WRITE);
SPI.transfer(address);
SPI.transfer(b1);
SPI.transfer(b2);
_wait();
SPI.endTransaction();
SPIMaster::disable();
}
void Player::_write_data(uint8_t* buffer) {
SPIMaster::enable(XDCS);
SPI.beginTransaction(*_spi_settings);
for (uint i=0; i<sizeof(_buffer); i++) {
SPI.transfer(_buffer[i]);
}
SPI.endTransaction();
SPIMaster::disable();
}
uint16_t Player::_read_wram(uint16_t address) {
Serial.printf("Reading WRAM address 0x%04X... ", address);
_write_control_register(SCI_WRAMADDR, address);
uint16_t r1 = _read_control_register(SCI_WRAM);
_write_control_register(SCI_WRAMADDR, address);
uint16_t r2 = _read_control_register(SCI_WRAM);
Serial.printf("Got 0x%04X and 0x%04X.\n", r1, r2);
return r1;
}
void Player::set_volume(uint8_t vol, bool save) {
if (save) {
_volume = vol;
}
Serial.printf("Setting volume to 0x%02X\n", vol);
vol = 0xFF - vol;
if (vol==0xFF) vol=0xFE;
uint16_t value = (vol<<8)|vol;
Serial.printf("Setting volume register to 0x%04X\n", value);
_write_control_register(SCI_VOL, value);
}
void Player::vol_up() {
if (_volume + VOLUME_STEP > VOLUME_MAX) set_volume(VOLUME_MAX);
else set_volume(_volume + VOLUME_STEP);
}
void Player::vol_down() {
if (_volume >= VOLUME_MIN + VOLUME_STEP) set_volume(_volume - VOLUME_STEP);
else set_volume(VOLUME_MIN);
}
void Player::_mute() {
Serial.println("Muting.");
set_volume(0, false);
}
void Player::_unmute() {
Serial.println("Unmuting.");
set_volume(_volume, false);
}
void Player::track_next() {
if (_state != playing) return;
stop();
play_song(_playing_album, _playing_index + 1);
}
void Player::track_prev() {
if (_state != playing) return;
if (_playing_index == 0) _playing_index=1;
stop();
play_song(_playing_album, _playing_index - 1);
}
std::list<String> Player::_files_in_dir(String path) {
Serial.printf("Examining folder %s...\n", path.c_str());
if (!path.startsWith("/")) path = String("/") + path;
if (!path.endsWith("/")) path.concat("/");
std::list<String> result;
if (!SD.exists(path)) return result;
File dir = SD.open(path);
File entry;
while (entry = dir.openNextFile()) {
String filename = entry.name();
if (!entry.isDirectory() && !filename.startsWith(".") && filename.endsWith(".mp3")) {
//Serial.printf("Adding file %s\n", filename.c_str());
result.push_back(path + filename);
} else {
//Serial.printf("Ignoring entry %s\n", filename.c_str());
}
entry.close();
}
dir.close();
result.sort();
return result;
}
void Player::_write_register(uint8_t address, uint16_t value, uint32_t spi_speed) {
Serial.printf("Writing to register 0x%02X...", address);
SPI.setClockDivider(spi_speed);
SPIMaster::enable(PIN_VS1053_XCS);
SPI.transfer(CMD_WRITE);
SPI.transfer(address);
SPI.transfer(value >> 8);
SPI.transfer(value & 0xFF);
_wait();
SPIMaster::disable();
Serial.println(" done.");
bool Player::play_album(String album) {
album_state s = _last_tracks[album.c_str()];
Serial.printf("Last index for album %s was %d,%d\n", album.c_str(), s.index, s.position);
return play_song(album, s.index, s.position);
}
bool Player::play_song(String album, uint8_t index, uint32_t skip_to) {
if (_state != idle) return false;
Serial.printf("Playing song at index %d, offset %d of album %s\n", index, skip_to, album.c_str());
std::list<String> files = _files_in_dir(album);
Serial.printf("Found %d songs in album\n", files.size());
if (index >= files.size()) {
Serial.println("No matching file found - not playing.");
return false;
}
//std::list<String>::iterator it = files.begin();
//std::advance(it, index);
String file = *(std::next(files.begin(), index));
Serial.printf("Opening file %s for playback...\n", file.c_str());
_file = SD.open(file);
Serial.println("Resetting SCI_DECODE_TIME...");
_write_control_register(SCI_DECODE_TIME, 0);
Serial.println("Resetting SS_DO_NOT_JUMP...");
_write_control_register(SCI_STATUS, _read_control_register(SCI_STATUS) & ~SS_DO_NOT_JUMP);
delay(100);
_state = playing;
_playing_album = album;
_playing_index = index;
_refills = 0;
_skip_to = skip_to;
if (_skip_to>0) _mute();
Serial.println("Now playing.");
_set_last_track(album.c_str(), index, 0);
return true;
}
void Player::_flush(uint bytes) {
SPIMaster::enable(XDCS);
SPI.beginTransaction(*_spi_settings);
for(uint i=0; i<bytes; i++) {
_wait();
SPI.transfer(_end_byte);
}
SPI.endTransaction();
}
void Player::_finish_playing() {
_flush(2052);
_write_control_register(SCI_MODE, _read_control_register(SCI_MODE) | SM_CANCEL);
for (int i=0; i<64; i++) {
_flush(32);
uint16_t mode = _read_control_register(SCI_MODE);
if ((mode & SM_CANCEL) == 0) return;
}
// If we reached this, the Chip didn't stop. That should not happen.
// (That's written in the manual.)
// Reset the chip.
_init();
}
void Player::_flush_and_cancel() {
Serial.println("In flush_and_cancel()");
//_flush(2052);
for (int i=0; i<64; i++) {
_write_control_register(SCI_MODE, _read_control_register(SCI_MODE) | SM_CANCEL);
}
_flush(2052);
}
void Player::stop() {
if (_state != playing) return;
Serial.println("Stopping.");
_set_last_track(_playing_album.c_str(), _playing_index, (uint32_t)_file.position());
_state = stopping;
_stop_delay = 0;
_write_control_register(SCI_MODE, _read_control_register(SCI_MODE) | SM_CANCEL);
while (true) {
_refill();
uint16_t mode = _read_control_register(SCI_MODE);
if ((mode & SM_CANCEL) == 0) {
_flush(2052);
_finish_stopping();
break;
} else if (_stop_delay > 2048) {
init();
break;
}
_stop_delay++;
}
}
void Player::_finish_stopping() {
_state = idle;
if (_file) {
_file.close();
}
Serial.println("Stopped.");
}
void Player::_refill() {
SPIMaster::enable(PIN_SD_CS);
_refills++;
if (_refills % 1000 == 0) Serial.print(".");
uint8_t result = _file.read(_buffer, sizeof(_buffer));
if (result == 0) {
// File is over.
Serial.println("EOF reached.");
_finish_playing();
_finish_stopping();
bool result = play_song(_playing_album, _playing_index + 1);
if (!result) {
_set_last_track(_playing_album.c_str(), 0, 0);
}
return;
}
_write_data(_buffer);
if (_skip_to > 0) {
if (_skip_to > _file.position()) {
uint16_t status = _read_control_register(SCI_STATUS);
if ((status & SS_DO_NOT_JUMP) == 0) {
Serial.printf("Skipping to %d.\n", _skip_to);
_flush(2048);
_file.seek(_skip_to);
_skip_to = 0;
_unmute();
}
} else {
_skip_to = 0;
_unmute();
}
}
}
bool Player::loop() {
if (digitalRead(DREQ) && (_state==playing || _state==stopping)) {
_refill();
return true;
}
return false;
}
void Player::_set_last_track(const char* album, uint8_t index, uint32_t position) {
Serial.printf("Setting _last_track[%s]=%d,%d.\n", album, index, position);
_last_tracks[album] = {index, position};
}

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@ -1,9 +0,0 @@
#include "sd_card.h"
SDCard::SDCard() {
if (!SD.begin(PIN_SD_CS)) {
Serial.println("Could not initialize SD card.");
} else {
Serial.println("SD card successfully initialized.");
}
}