fabian
/
esmp3
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Added recording mode to detect volumes.

This commit is contained in:
Fabian Schlenz 2019-11-11 17:40:47 +01:00
parent 2d1f049444
commit 48c93ed043
2 changed files with 87 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
include/player.h
View File

@ -4,7 +4,6 @@
#include <SD.h>
#include <list>
#include <map>
#include <Adafruit_MCP23017.h>
#include "spi_master.h"
#define SCI_MODE 0x00
@ -15,20 +14,28 @@
#define SCI_VOL 0x0B
#define SCI_WRAMADDR 0x07
#define SCI_WRAM 0x06
#define SCI_HDAT0 0x08
#define SCI_HDAT1 0x09
#define SCI_AICTRL0 0x0C
#define SCI_AICTRL1 0x0D
#define SCI_AICTRL2 0x0E
#define SCI_AICTRL3 0x0F
#define CMD_WRITE 0x02
#define CMD_READ 0x03
#define ADDR_ENDBYTE 0x1E06
#define SM_RESET 0x0004
#define SM_CANCEL 0x0008
#define SM_ADPCM 0x1000
#define SS_DO_NOT_JUMP 0x8000
class Player {
private:
enum state { uninitialized, idle, playing, stopping,
system_sound_while_playing, system_sound_while_stopped,
sleeping };
sleeping, recording };
struct album_state {
uint8_t index;
uint32_t position;
@ -39,6 +46,7 @@ private:
void _wait();
uint16_t _read_control_register(uint8_t address);
void _write_control_register(uint8_t address, uint16_t value);
void _write_direct(uint8_t address, uint16_t value);
void _write_data(uint8_t* data);
uint16_t _read_wram(uint16_t address);
state _state = state::uninitialized;
@ -58,6 +66,8 @@ private:
void _unmute();
void _sleep();
void _wakeup();
void _record();
void _patch_adpcm();
void _speaker_off();
void _speaker_on();

82
src/player.cpp
View File

@ -108,12 +108,25 @@ void Player::_wakeup() {
set_volume(_volume, false);
_write_control_register(SCI_AUDATA, 0x0000);
_write_control_register(SCI_CLOCKF, 0x6000);
_write_control_register(SCI_MODE, 0x4800 | SM_RESET);
delay(10);
//_speaker_on();
_spi_settings = &_spi_settings_fast;
_state = idle;
}
void Player::_record() {
_write_control_register(SCI_AICTRL0, 8000U); // Sampling rate 8000 Hz
_write_control_register(SCI_AICTRL1, 2048U); // Manual gain, 2x
_write_control_register(SCI_AICTRL2, 2048U); // Maximum gain for autogain - ignored
_write_control_register(SCI_AICTRL3, 6); // 2 (left channel) + 4 (PCM)
uint16_t mode = _read_control_register(SCI_MODE);
mode = mode | SM_RESET | SM_ADPCM;
_write_control_register(SCI_MODE, mode);
_patch_adpcm();
_state = recording;
}
void Player::_check_system_sound(String filename) {
String path = String("/system/") + filename;
if (!SD.exists(path)) {
@ -144,16 +157,57 @@ uint16_t Player::_read_control_register(uint8_t address) {
}
void Player::_write_control_register(uint8_t address, uint16_t value) {
uint8_t b1 = value >> 8;
uint8_t b2 = value & 0xFF;
_wait();
_spi->select_vs1053_xcs();
SPI.beginTransaction(*_spi_settings);
_write_direct(address, value);
SPI.endTransaction();
_spi->select_vs1053_xcs(false);
}
void Player::_write_direct(uint8_t target, uint16_t value) {
SPI.transfer(CMD_WRITE);
SPI.transfer(address);
SPI.transfer(b1);
SPI.transfer(b2);
SPI.transfer(target);
SPI.transfer(value >> 8);
SPI.transfer(value & 0xFF);
_wait();
}
void Player::_patch_adpcm() {
_spi->select_vs1053_xcs();
SPI.beginTransaction(*_spi_settings);
_write_direct(SCI_WRAMADDR, 0x8010);
_write_direct(SCI_WRAM, 0x3e12);
_write_direct(SCI_WRAM, 0xb817);
_write_direct(SCI_WRAM, 0x3e14);
_write_direct(SCI_WRAM, 0xf812);
_write_direct(SCI_WRAM, 0x3e01);
_write_direct(SCI_WRAM, 0xb811);
_write_direct(SCI_WRAM, 0x0007);
_write_direct(SCI_WRAM, 0x9717);
_write_direct(SCI_WRAM, 0x0020);
_write_direct(SCI_WRAM, 0xffd2);
_write_direct(SCI_WRAM, 0x0030);
_write_direct(SCI_WRAM, 0x11d1);
_write_direct(SCI_WRAM, 0x3111);
_write_direct(SCI_WRAM, 0x8024);
_write_direct(SCI_WRAM, 0x3704);
_write_direct(SCI_WRAM, 0xc024);
_write_direct(SCI_WRAM, 0x3b81);
_write_direct(SCI_WRAM, 0x8024);
_write_direct(SCI_WRAM, 0x3101);
_write_direct(SCI_WRAM, 0x8024);
_write_direct(SCI_WRAM, 0x3b81);
_write_direct(SCI_WRAM, 0x8024);
_write_direct(SCI_WRAM, 0x3f04);
_write_direct(SCI_WRAM, 0xc024);
_write_direct(SCI_WRAM, 0x2808);
_write_direct(SCI_WRAM, 0x4800);
_write_direct(SCI_WRAM, 0x36f1);
_write_direct(SCI_WRAM, 0x9811);
_write_direct(SCI_WRAMADDR, 0x8028);
_write_direct(SCI_WRAM, 0x2a00);
_write_direct(SCI_WRAM, 0x040e);
SPI.endTransaction();
_spi->select_vs1053_xcs(false);
}
@ -354,7 +408,7 @@ bool Player::play_album(String album) {
}
bool Player::play_song(String album, uint8_t index, uint32_t skip_to) {
if (_state == sleeping) _wakeup();
if (_state == sleeping || _state == recording) _wakeup();
if (_state != idle) return false;
DEBUG("Trying to play song at index %d, offset %d of album %s\n", index, skip_to, album.c_str());
String path = _find_album_dir(album);
@ -572,9 +626,23 @@ bool Player::loop() {
_refill();
return true;
}
if (_state == recording) {
uint16_t samples_available = _read_control_register(SCI_HDAT1);
if (samples_available >= 500) {
unsigned long sum = 0;
for (int i=0; i<500; i++) {
uint16_t sample = _read_control_register(SCI_HDAT0);
sum += sample * sample;
}
double result = sqrt(sum / 500);
DEBUG("Loudness: %f", result);
}
}
if (_state == idle && _stopped_at < millis() - VS1053_SLEEP_DELAY) {
_sleep();
//_sleep();
_record();
}
return false;
}