rebooting issue esp32 audio kit 2.2 / not enough memory -> memory exhausted

[prouting]

Hi Marcel

Sorry my ignorance in programming

I have successfully compiled by modifying
define ES8388_CFG_I2C from1 to 2

but now rebooting continuously showing this:

Loading data
Firmware started successfully
Connect to ES8388 codec... 0x00: 0x05
0x01: 0x40
AdcCh1!
MixChAMPL!
ES8388 setup finished!
Reg 0x00 = 0x05
Reg 0x01 = 0x40
...

Setup Serial2 with 31250 baud with rx: 21 only
Setup MidiPort2 using Serial2
Total PSRAM: 4192091
Free PSRAM: 4015179
done!..

• Free PSRAM: 2988675
  done!..
• Free PSRAM: 1962171
  done!..
• Free PSRAM: 935667
  not enough memory!
  ESP.getFreeHeap() 224596
  ESP.getMinFreeHeap() 224416
  ESP.getHeapSize() 255352
  ESP.getMaxAllocHeap() 110580
  Total heap: 255352
  Free heap: 224596
  Total PSRAM: 4192055
  Free PSRAM: 935667
  Guru Meditation Error: Core 1 panic'ed (StoreProhibited). Exception was unhandled.

Core 1 register dump:
PC : 0x400d35a3 PS : 0x00060f30 A0 : 0x800d3811 A1 : 0x3ffcb8f0
A2 : 0x3ffc394c A3 : 0x3ffc388c A4 : 0x3ffc3688 A5 : 0x3ffc3ab4
A6 : 0x3ffc3aa4 A7 : 0x3ffc3ad8 A8 : 0x00000000 A9 : 0x0000000c
A10 : 0x3ffc3694 A11 : 0x00000003 A12 : 0x00000000 A13 : 0x00000000
A14 : 0x00000004 A15 : 0x000000ff SAR : 0x0000001d EXCCAUSE: 0x0000001d
EXCVADDR: 0x00000000 LBEG : 0x400d358c LEND : 0x400d3650 LCOUNT : 0x00000000

Backtrace:0x400d35a0:0x3ffcb8f00x400d380e:0x3ffcb920 0x400d385f:0x3ffcb960 0x400d6c1d:0x3ffcb980

ELF file SHA256: 0000000000000000

Rebooting...
ets Jun 8 2016 00:22:57

i'm doing wrong
Thanx in advance

Pedro

[marcel-licence]

Hi,

looks like there is not enough memory for one of the modules not enough memory!
That means when the looper wants to run it tries to work a module which couldn't allocate memory and this causes the exception and finally the reboot.

Did you modify one of the following defines?
TRACK_CNT, MAX_LOOP, MAX_DELAY

They influence the required memory. If you setup to high values the looper is not able to run

[marcel-licence]

Hello Pedro,

good to hear that is now running. Hope you will find the correct configuration soon. You should also get some messages indicating that the ES8388 is configured. You can also use the I2C scanner to check different PINs. The ES8388 is connected via I2C and needs to be configured to start its operation.

The teraterm window should be resizeable. I think using a bigger size should avoid scrolling (like fullscreen). Hope this helps.

D4 flashing sounds also good. You can change the MIDI mapping in z_config.ino.

Best regards,
Marcel

[prouting]

Hello

Some progress today

I think there is a bug in ML_synth_tools in board_audio_kit_es8388.h

#elif ES8388_CFG_I2C==2
#define ES8388_PIN_SDA 33
#define ES8388_PIN_SCL 32
#elif ES8388_CFG_I2C==2 <<<<< I rename to 3
#define ES8388_PIN_SDA 27
#define ES8388_PIN_SCL 28

Compiling basic_synth for test and I get audio tone if enable #define OUTPUT_SAW_TEST with the configuration
I2C=2 I2S=2 voilà

I can see serial midi activity if enable midi_dump
although I don't get notes from my midi keyboard,
neither by activating #define NOTE_ON_AFTER_SETUP
:,(

[marcel-licence]

Thank you for your feedback.
I've fixed the file.

The multitrack looper project does not include any synthesizer module. You can only activate recording and playback. To play sounds you can try one of the synthesizer projects. I used the line in with an external keyboard to record the video.

Hope this helps.

[prouting]

Hello Marcel

It already works with the analog modification keys, but the sound is very robotic and lo-fi
I will continue to investigate why

Regards

[marcel-licence]

Hello Pedro,

the robotic sound may be a result of too slow code. That might happen if you put some debug output in the main loop. It would slow down the audio processing generating audible results.

Best regards,