I am waiting for a module like this:
https://www.aliexpress.com/item/Hot-selling-ESP-32S-WiFi-Bluetooth-module-Dual-core-CPU-Ethernet-poort-MCU-Lage-power-Bluetooth/32811940089.html


nice - you know, that the modul can't connect to a breadboard?
( double pinheader pins left and right are nice but ...

I am waiting for a module like this:

https://www.aliexpress.com/item/Hot-sel ... 40089.html

I placed the order a few days ago.

In the inline assembly block, %0 is the reference to the first register in the capture list (given after the assembly statement); and count is the name of the special register. The whole thing looks a bit confusing because both the special register and the variable have the same name.

Yes. I ...

The suggested way of obtaining time is POSIX gettimeofday function (and you can set time using settimeofday).

Both Timer Group peripherals are also available for applications to use, ESP-IDF does not use them internally.

Hi ESP_igrr,

thanks for your information.

At this time my interest is ...

Can you use the same implementation as arduino?
millis() https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-misc.c#L50
micros() https://github.com/espressif/arduino-esp32/blob/master/cores/esp32/esp32-hal-misc.c#L33

Hi f.h-f.s,

Hmmm. Your proposal seems interesting but ...

Arduino IDE for ESP32 has some important limitations. So I decided to migrate to ESP-IDF.

I installed Arduino as ESP-IDF component as first step for this purpose:

https://github.com/espressif/arduino-esp32#using-as-esp-idf-component

But this solution was not completely successful. I got some ...

static portMUX_TYPE spinlock = portMUX_INITIALIZER_UNLOCKED;

portENTER_CRITICAL(&spinlock);
// this code runs with interrupts disabled
portEXIT_CRITICAL(&spinlock);

Your solution works fine, but, if the critical code spends more than 300 msec, a wdt exception occurs:

Guru Meditation Error ...

Thanks a lot for your information.

Is there a work around for enabling and disabling interrupts using the Arduino IDE?. For examle, can I write my own assembler code and link it with other c modules?

These functions (cli and sei) seem essential for developing real-time firmware, but maybe they ...

I wish to use the ESP32 chip for acquiring some digital samples at high rates and I detected a suspicious non-deterministic behaviour on delays in some cases. So, I wrote a simple test program trying to understand that strange behaviour.

This is the function loop():

...
#define DIM_DELAYS 128 ...