Hi, I need RTC timer code example. I tried to look in the forum but didn't find any.
In IDF I only found esp-idf/components/soc/esp32/rtc_time.c but it is not enough for me to implement.
In general I need 32kHz XTAL based the clock source that will remain counting during light/deep sleep mode ...

Ok, thanks. It's clear now.

Hi, I'm porting a peripheral library that sends SPI data in GPIO's interrupt routine. The panic occurring when firmware running.
Guru Meditation Error: Core 0 panic'ed (Interrupt wdt timeout on CPU0)
Core 0 register dump:
PC : 0x400874ee PS : 0x00060234 A0 : 0x80086836 A1 : 0x3ffc0630
0x400874ee ...

Hi, reassigning pins helped. So the main problem was in too high clock frequency.

Nope, I see, they can interfere...I will reassign them and try again. Thanks

I have some progress:
In idf example I decreased the clock freq to 10kHz and flashed the firmware to ESP32 dev board (ic rev.1) .
SPI pin set as in example:
https://gyazo.com/dba7b09560c96cf1b9b2b0c1c0b91ad7
Than I changed the pin numbers to be the same as in my board.
SPI pin set as in my dev ...

Hi, my LA has max frequency 100MHz and always performed ok. So I don't think that it is caused by LA. Also I decreased clock freq to 10kHz and there where no changes in signal figure.
My SPI pins are: MISO - GPIO_NUM_21, MOSI - GPIO_NUM_5, SCK - GPIO_NUM_19, NSS - GPIO_NUM_25 could this set be ...

Hi, I used the spi master example as reference when developed communication with my SPI slave device. I tried to transfer data through SPI but it seemed to be faulty. Than I took spi master example and just changed GPIO numbers to make it correspondent to my esp32 based board. The signal behavior on ...

Hi, I'm trying to communicate via i2c interface and faced next probem.
According to tutorial:
I2C_WR 0x20, 0x33, 7, 0, 1 // Write byte 0x33 to sub-address 0x20 of slave with address set in SENS_I2C_SLAVE_ADDR1.
In my case I want to readout date from variable and write it to i2c

//here var ...

Hi, the maximum size of single data packet determined by MTU size which is 23bytes for BLE 4.0 (20b of data + 3b protocol wrapper). The MTU size is usually set during connection establishment with "MTU Request" command. I don't know if IDF has the API for this setting but first of all check your ...