Search found 28 matches

by pcbreflux
Tue Jun 13, 2017 12:22 pm
Forum: Sample Code
Topic: [Video] BLE Read, Write and Notify Tutorial with Nordic UART Service (nus)
Replies: 0
Views: 1585

[Video] BLE Read, Write and Notify Tutorial with Nordic UART Service (nus)

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/mast...
by pcbreflux
Mon Apr 24, 2017 8:30 pm
Forum: Sample Code
Topic: ESP32 Elliptic curve cryptography with micro-ecc, aes, sha example
Replies: 3
Views: 1653

Re: ESP32 Elliptic curve cryptography with micro-ecc, aes, sha example

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 websockets...
by pcbreflux
Wed Apr 19, 2017 12:52 pm
Forum: Sample Code
Topic: ESP32 Elliptic curve cryptography with micro-ecc, aes, sha example
Replies: 3
Views: 1653

ESP32 Elliptic curve cryptography with micro-ecc, aes, sha example

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
by pcbreflux
Sun Apr 09, 2017 8:40 pm
Forum: Sample Code
Topic: ESP32 playing sound example
Replies: 3
Views: 2039

Re: ESP32 playing sound example

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.
by pcbreflux
Sat Apr 08, 2017 3:03 pm
Forum: Sample Code
Topic: ESP32 playing sound example
Replies: 3
Views: 2039

Re: ESP32 playing sound example

Works also with a small speaker. Hopefully the GPIO will no be abused?
by pcbreflux
Sat Apr 08, 2017 2:15 pm
Forum: Sample Code
Topic: ESP32 playing sound example
Replies: 3
Views: 2039

ESP32 playing sound example

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!
by pcbreflux
Wed Apr 05, 2017 8:04 pm
Forum: Sample Code
Topic: FreeRTOS Counting Semaphore Example
Replies: 0
Views: 665

FreeRTOS Counting Semaphore Example

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

https://github.com/pcbreflux/espressif/ ... ket_task.c
by pcbreflux
Wed Apr 05, 2017 7:56 pm
Forum: Sample Code
Topic: [Video] esp-idf with BH1750FVI Ambient Light Sensor IC
Replies: 0
Views: 663

[Video] esp-idf with BH1750FVI Ambient Light Sensor IC

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://github.com/p...
by pcbreflux
Sun Apr 02, 2017 5:20 pm
Forum: General Discussion
Topic: New tool for "make monitor": idf_monitor
Replies: 7
Views: 3053

Re: New tool for "make monitor": idf_monitor

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)...
by pcbreflux
Wed Mar 22, 2017 10:08 am
Forum: Sample Code
Topic: ESP32 - Internal Hall Effect Sensor Example
Replies: 0
Views: 1886

ESP32 - Internal Hall Effect Sensor Example

Hi,

a small demo using the internal hall effect sensor.

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

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