How to disable too much runtime debugging output from SDK

[MickPF]

Hello,

I use the Adafruit Feather HUZZAH ESP32 with the latest ESP32 SDK integrated in Arduino IDE (v. 1.8.5).
Every running code I made generates too much debugging output on the serial interface (i2c, wifi, bluetooth...).
I believe that this output will be built in by the compiler and/or runtime libs.
This output looks like this:

Code: Select all

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_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:0x3fff0018,len:4
load:0x3fff001c,len:956
load:0x40078000,len:0
load:0x40078000,len:13076
entry 0x40078a58
[W][esp32-hal-i2c.c:235] i2cWrite(): Ack Error! Addr: 68
[W][esp32-hal-i2c.c:334] i2cRead(): Ack Error! Addr: 68

Is it possible to suppress/disable this output during code compiling?

Thanks in advance,
Michael