Search found 11 matches
- Thu Nov 01, 2018 12:40 pm
- Forum: Hardware
- Topic: External antenna
- Replies: 6
- Views: 21167
Re: External antenna
Are there specific models that you use?
- Thu Nov 01, 2018 12:38 pm
- Forum: ESP32 Arduino
- Topic: ESP32-WROOM-32U
- Replies: 0
- Views: 2706
ESP32-WROOM-32U
My sketch for ESP32-WROOM works flawlessly. But when I load it into ESP32-WROOM-32U I have problems: for example I2C does not start at 80 MHz, but WIFI does not start at 40 MHz. What is the difference between the two types of controllers :?: How to migrate from just WROOM to WROOM-32D / U :?: I use ...
- Thu Nov 01, 2018 7:31 am
- Forum: Hardware
- Topic: External antenna
- Replies: 6
- Views: 21167
Re: External antenna
Thank you all! :D https://pp.userapi.com/c851028/v851028797/37525/qvo41AF2mbw.jpg But in the specification for the antenna indicated that it is a ufl connector. Where is the truth? What kind of antennas do you use? Drawing ufl connector from ESP32 https://www.espressif.com/sites/default/files/docume...
- Thu Oct 25, 2018 8:40 am
- Forum: Hardware
- Topic: External antenna
- Replies: 6
- Views: 21167
External antenna
I bought an antenna 2042811100 MOLEX. https://www.molex.com/molex/products/datasheet.jsp? part=active/2042811150_ANTENNAS.xml https://www.molex.com/pdm_docs/iso/204281_ISO.jpg But it does not stick into the slot on module ESP32-WROOM-32U. https://ru.mouser.com/images/espressifsystems/images/ESP32-WR...
- Mon Oct 09, 2017 11:58 am
- Forum: ESP-IDF
- Topic: SPI slave mode (example)
- Replies: 17
- Views: 36621
Re: SPI slave mode (example)
Y SPI slave at the moment uses DMA if I recall correctly, so no need to read the DMA stuff. We do have the restriction that the length of the transaction (t.length) should be exactly the amount of bits transferred; if not, the DMA engine can get confused and less than the expected amount of bits can...
- Mon Oct 09, 2017 9:42 am
- Forum: ESP-IDF
- Topic: SPI slave mode (example)
- Replies: 17
- Views: 36621
Re: SPI slave mode (example)
You can provide a working example?
- Mon Oct 09, 2017 8:12 am
- Forum: ESP-IDF
- Topic: SPI slave mode (example)
- Replies: 17
- Views: 36621
Re: SPI slave mode (example)
How use DMA?
Simple past
in my code?
Simple past
Code: Select all
heap_caps_malloc(3, MALLOC_CAP_DMA);
- Mon Oct 09, 2017 8:04 am
- Forum: ESP-IDF
- Topic: SPI slave mode (example)
- Replies: 17
- Views: 36621
Re: SPI slave mode (example)
Thanks for the answer, but I did not understand how to use the SLAVE MODE. The master mode is very good. The buffer length is the same for the master and for the slave. Also, I can not get by sending data from the slave to the master through the MISO line. (I check with an oscilloscope) I fill in th...
- Mon Oct 09, 2017 6:04 am
- Forum: ESP-IDF
- Topic: SPI slave mode (example)
- Replies: 17
- Views: 36621
Re: SPI slave mode (example)
I read to "ESP32 Technical Reference Manual"what resiving data saved id SPI_W0_REG ~ SPI_W15_REG.
Can I read registers from esp-idf?
How i can it do?
Can I read registers from esp-idf?
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
How i can it do?
- Fri Oct 06, 2017 9:58 am
- Forum: ESP-IDF
- Topic: SPI slave mode (example)
- Replies: 17
- Views: 36621
SPI slave mode (example)
Friends, I'm trying to start slaving the SIP mode. the master gives a good premise (see fig.) https://pp.userapi.com/c639124/v639124872/51e3a/PNSK6sDfk-U.jpg I'll use the code from the example: #include <stdio.h> #include <stdint.h> #include <stddef.h> #include <string.h> #include "freertos/FreeRTOS...