Issue with example SDrecording

[rickyelqasem]

I'm using an ESP32 and I'm going directly off the pins (no I2s components)

I'm using the default settings:

aaAudio.begin(1, 1); // Start AAAudio with ADC & DAC
aaAudio.autoAdjust = 0; // Disable automatic timer adjustment

but in the serial output I get this..

SD ok
Analog Audio Begin
E (17) i2s(legacy): i2s_check_cfg_validity(930): I2S buffer length at most 1024 and more than 8
E (17) i2s(legacy): i2s_driver_install(1582): I2S configuration is invalid
E (23) i2s(legacy): i2s_adc_enable(898): Not initialized yet
E (28) i2s(legacy): i2s_set_clk(1042): I2S0 has not installed yet

Is there anything I have not setup or is it an issue?

[rickyelqasem]

So i noticed a bit more of the error when I try to perform any action:

Start Recording: /test.wav
E (8427) i2s(legacy): i2s_set_clk(1042): I2S0 has not installed yet
Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled.

Core 0 register dump:
PC : 0x400da93c PS : 0x00060130 A0 : 0x800d4278 A1 : 0x3ffb9660
A2 : 0x00000000 A3 : 0x3ffcad94 A4 : 0x00003200 A5 : 0x3ffb96ac
A6 : 0x00000000 A7 : 0x3ffce460 A8 : 0x3ffce460 A9 : 0x3ffb9660
A10 : 0x00000001 A11 : 0x3ffce7c8 A12 : 0xffffffff A13 : 0x3ffcea68
A14 : 0x000020ec A15 : 0x00000004 SAR : 0x0000000a EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000014 LBEG : 0x400847a1 LEND : 0x400847a9 LCOUNT : 0x00000027

Backtrace: 0x400da939:0x3ffb9660 0x400d4275:0x3ffb96a0 0x4008c0b6:0x3ffb96d0

ELF file SHA256: 5496005f8d5b4629

Rebooting...
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:4604
ho 0 tail 12 room 4
load:0x40078000,len:15488
load:0x40080400,len:4
load:0x40080404,len:3180
entry 0x400805b8
SD ok
Analog Audio Begin

[TMRh20]

ESP32 support never worked quite properly, and it looks like I broke it more on the last update.

I might just remove the ESP32 support altogether unless I get a chance to fix it.

[rickyelqasem]

If I switch to a different MCU would you say this works nicely on an Arduino Zero, which has 1 DAC?

[TMRh20]

It was designed on Arduino Due, so works very well on that platform. I don't think it will work with the Zero.

I would recommend the nRF52840 boards like Feather Express 52840, Clue or XIAO Sense 52840. It is super versatile, supporting Input: PDM, SAADC or I2S or Output: PWM, I2S
It also has an onboard radio which can support bluetooth or operate using ESB for live streaming of audio etc. using the https://github.com/TMRh20/nrf_to_nrf library.

[rickyelqasem]

So in your example in your blog for the nRF52840:

aaAudio.dinPin = 1;
aaAudio.begin(3, 1);
sets up output on AIN0, which is A4, but how do you define the record pin?

[TMRh20]

sets up output on AIN0, which is A4, but how do you define the record pin?

INPUT is on AIN0, output would be PWM so pin 5, port 0. The input pin is defined by dinPin

See https://tmrh20.github.io/AutoAnalogAudio/classAutoAnalog.html

[rickyelqasem]

thanks I'm going to test both due and nfr52840

[rickyelqasem]

So these are the defaults just to make sure I get it the right way around ?

[TMRh20]

Sorry, its all confusing because I was confused when writing the code for nRF52 at first. You have it backwards. Switch speaker pin to record pin then see below.

The PWM pins are defined by GPIO numbers, so when I say pin 5 port 0 I mean the pin marked P0.05 or A1 in other words. The only way to change it is to edit the AutoAnalogAudio.cpp file and modify DEFAULT_PWM_PIN and DEFAULT_PWM_PORT settings. The pin with your red arrow would be P1.08 (GPIO pin 8, port 1)

I don't really recommend using PWM though since it will be low quality compared to I2S.

[rickyelqasem]

Thanks I was a bit confused..