Search found 7 matches

by Sara
Thu Jun 24, 2021 6:07 pm
Forum: General Discussion
Topic: How can i support UART Tx with DMA(using UHCI driver api) and Rx without DMA(using UART driver api)?
Replies: 2
Views: 5669

Re: How can i support UART Tx with DMA(using UHCI driver api) and Rx without DMA(using UART driver api)?

Please, note that due a HW issue on UHCI of ESP32, RX transfer via DMA is not reliable.
by Sara
Tue Mar 09, 2021 12:45 pm
Forum: ESP-IDF
Topic: [Solved] Reading character input from the serial port
Replies: 13
Views: 60972

Re: [Solved] Reading character input from the serial port

Hi all,
to use functions like scanf, that are interrupt driven you should change the UART driver to interrupt driven mode, see https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/storage/vfs.html#standard-io-streams-stdin-stdout-stderr?.

An example that does this is the uart ...
by Sara
Wed Feb 24, 2021 2:20 pm
Forum: ESP-IDF
Topic: Using LOG on UART0 and console example on UART1?
Replies: 1
Views: 4958

Re: Using LOG on UART0 and console example on UART1?

hi,
you can enable ESP_CONSOLE_MULTIPLE_UART and select which UART you want to use for console.
by Sara
Wed Dec 02, 2020 1:01 pm
Forum: General Discussion
Topic: ESP32 Blinky on NuttX Port RTOS Apache
Replies: 6
Views: 7787

Re: ESP32 Blinky on NuttX Port RTOS Apache


Hi Folks

There is another RTOS port for ESP32.
NuttX Apache.org

The first steps are described here .
The first blinky is already running . The NuttX main repo is on Github from Apache .

Also if you want follow the workshops from the past
NuttX Online Workshop Day1
NuttX Online Workshop ...
by Sara
Wed Dec 02, 2020 12:56 pm
Forum: General Discussion
Topic: ESP32 Blinky on NuttX Port RTOS Apache
Replies: 6
Views: 7787

Re: ESP32 Blinky on NuttX Port RTOS Apache


Is anything worth considering switching to from freertos yet?
Nuttx
Tizen-rt
Zephyr
Riot


Hey,
It mostly depends on your application needs.
I'll let here a reading suggestion that compares Zephyr, NuttX and freeRTOS.
https://micro-ros.github.io/docs/concepts/rtos/comparison/
It may help, but ...
by Sara
Sat Nov 28, 2020 2:34 pm
Forum: ESP32 Arduino
Topic: using Arduino IDE SPI.h library with ESP32
Replies: 7
Views: 47276

Re: using Arduino IDE SPI.h library with ESP32

Hi akshu15,

I'll let here a link to a code that shows how to use SPI.h from the arduino IDE.
In this code is shown also how to remap the MISO, MOSI and SCLK buses to other pins.
One important point:
Observe that when initialing the SPI instance, only MOSI, MISO and SCLK are passed as parameters to ...
by Sara
Mon Nov 16, 2020 3:08 pm
Forum: General Discussion
Topic: ESP32 Blinky on NuttX Port RTOS Apache
Replies: 6
Views: 7787

Re: ESP32 Blinky on NuttX Port RTOS Apache

:D

Hi Rudi!

I'm glad that you checked it and posted it here!

The tutorials you provided are in Portuguese.
We are preparing the English Version that will be posted in The ESP Journal ASAP and I'll update this post with the links!

Thank you to bring it up!

Bye!

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