@ESP_Sprite Thanks for ur replay and for ur good undersrtand the purpose of my post and my question , so i will answer u the reason first i want to know if its possbile but i have a project i use i2c and 8 sensor with cable RJ45 up to 30m for now so i have a esp32 software&logic to read value frome ...

Hi, thanks for ur replay and i understand very well but i prefer ask my question maybe its possible , that will be save my code and my time ... so its a challange to do it if possible , i mean if the hardware i given the opportunity to make it. But if u said me u cant did it bcp its hard or very ...

Hi ,

iam a begener embedded system engineer and i have a simple question about i2c protocol !

What i know about this standard protocol I2C (Inter-Integrated Circuit) : it was developed by Philips in 1982 for the internal communication of electronic devices in its articles. Subsequently, it was ...

Hi,

I am using ESP32 Framework ESP IDF V4.3.2

I want use an server https but without using certificate from client (web browser) .

i think Sending messages securely is one part of the story and sending messages to the right recipient is the other part.


for example i want use this code example ...

hi,

iam usig esp32 and esp idf 4.3 Framework .

is it possible to run using 2 task an MQTT client (port 8883) to publish data and have web page at same time .
for now each task work well separately. But i got error when i try to run both task at same code.

like :

E (385828) TRANS_TCP: tcp_poll ...

i think its warm reboot , bcs simply pulling nRST pin (PHY LAN8720A) high permanently will not work ....

https://www.eevblog.com/forum/microcont ... -wroom/25/

hi, thanks for ur reply,

-as u can see R23 drive clk from oscillator to lan8720a XTAL1 with length 48 mm and R24 drive it from oscillator to esp32 and in esp32 board i have piste length of 45 mm. that why i use zigzag to route this piste.

- i use hadrware rest i connect nRST pin to GPIO (low for ...

I'm trying to run the ethernet example with my esp32, using a custom breakout board based on the schematic for the Waveshare LAN8720 ETH board : https://www.waveshare.com/LAN8720-ETH-Board.htm.

so if i use Waveshare LAN8720 ETH board with esp32 kit its works fine all time but when i use my custom ...

I have a ESP32 connected to a LAN8720 chip on a custom PCB.


This all works fine. And we use it to send in sensor data to the Internet.

console print ...

hi,

i want know if i can use library PPPOS (esp\esp-idf\examples\protocols\pppos_client) or other with SIM808 board ?