Example how to use BLE with esp-idf and testing with some mobile apps from Nordic Semiconductor
(nRF Connect, nRF UART, nRF Toolbox):

Content: GAP, GATTS, Service, Characteristic, Properties, Descriptor, read, write and notify BLE values.

Source code:
https://github.com/pcbreflux/espressif/tree ...

Hi DL88AI88,

thanks. Coincidentally i published a new secure MQTT example on github yesterday.
With MQTT via SSL/TLS (also hardware encrypted) and Websocket -> testing my secured mosquitto servers on UBUNTU and Raspberian.

-> Part of my /etc/mosquitto/mosquitto.conf

listener 9883
protocol ...

Sample using Elliptic curve cryptography with micro-ecc and ESP32 hardware enabled cryptography aes (256 bits, Counter Mode (CTR)) and sha (SHA-256) hash:

https://github.com/pcbreflux/espressif/ ... _micro-ecc

Thank you, if I realy think about it (not just try it without a thought) - the speaker is rated 8 Ohms and if the esp32 is supplied with 3.3V the current can peek at 412.5mA - way to high for the gpio. With the 100Ohms its down to 30mA.

Works also with a small speaker. Hopefully the GPIO will no be abused?

There maybe many other ways to play sounds with the ESP32 but this is my example:

https://github.com/pcbreflux/espressif/ ... pio_buzzer

Press GPIO 0 button!

Small example how to use counting semaphore to count open and active sockets:

https://github.com/pcbreflux/espressif/ ... ket_task.c

Small tutorial to demonstrate the setup to use the BH1750FVI Ambient Light Sensor IC and display the readings on a SSD1306 128x32 OLED-display.

Video:
https://youtu.be/gWOVEikxFP0

Source code:
https://github.com/pcbreflux/espressif/tree/master/esp32/app/ESP32_bh1750_oled

Wiring:
https ...

Hi,

is there a way not reset the board when starting make monitor (maybe in make menuconfig) ?
I now use a board with reset via the serial RTS line but this should only reset after flash or on demand (Ctrl-T Ctrl-R).
And with the baudrate: wish we could set this on demand like before (Ctrl-T Ctrl-B ...

Hi,

a small demo using the internal hall effect sensor.

https://github.com/pcbreflux/espressif/ ... all_sensor