Search found 28 matches

by ESP_Lvxinyue
Fri Dec 14, 2018 7:00 am
Forum: Hardware
Topic: What is status of GPIO13 after reset?
Replies: 2
Views: 125

Re: What is status of GPIO13 after reset?

There, Sorry everyone, I don't know Baidu‘s pictures can't be viewed. So I reposted a post. On page 50 of ESP32_TRM_rev3.8.pdf , the table 18: IO_MUX Pad Summary . It write MTCK/ GPIO13 is IE = 1(input enabled) on after reset . But On page 58 of ESP32_DS_rev2.5.pdf , the IO_MUX list . It write MTCK...
by ESP_Lvxinyue
Fri Dec 14, 2018 2:57 am
Forum: Hardware
Topic: ESP32-PICO-D4 circuit question
Replies: 3
Views: 297

Re: ESP32-PICO-D4 circuit question

loboris wrote:
Tue Dec 11, 2018 8:23 am
ESP_Lvxinyue wrote:
Tue Dec 11, 2018 3:11 am
4. No, you don't need to add caps between SVP and SCP, SVN and SCN, unless you want to use the LNA ADC.
Which is not supported. Or, is it?
No, it's not supported. Thanks for the reminder :)
by ESP_Lvxinyue
Tue Dec 11, 2018 3:11 am
Forum: Hardware
Topic: ESP32-PICO-D4 circuit question
Replies: 3
Views: 297

Re: ESP32-PICO-D4 circuit question

Hello, I'd like to use ESP32-PICO-D4 in my motorcycle data-logger module. First of all - do i need anything more that things in "peripheral schematics" in datasheet to run module? Secondly - 5 meters of wifi range is more than enough for me, then do i need to make matching circuit (L5, C27, C28) fo...
by ESP_Lvxinyue
Fri Dec 07, 2018 6:34 am
Forum: Documentation
Topic: [Documentation Release] ESP32 Technical Reference
Replies: 35
Views: 30724

Re: [Documentation Release] ESP32 Technical Reference

Hi all, the TRM is now V4.0. Major changes span four chapters. The link remains the same: https://www.espressif.com/sites/default ... ual_en.pdf
Remember to subscribe to our email notification at: https://www.espressif.com/en/subscribe
by ESP_Lvxinyue
Tue Nov 27, 2018 6:26 am
Forum: Documentation
Topic: Document Requests
Replies: 46
Views: 23993

Re: Document Requests

michprev wrote:
Sat Nov 24, 2018 3:58 pm
Setting SPI_CLKCNT_H too high in SPI_CLOCK_REG register makes in some cases (probably depending on SPI_CLKCNT_N) stop SPI working. This is not documented.
PI_CLKCNT_H=⌊SPI_CLKCNT_N+1/2 – 1⌋, SPI_CLKCNT_N=SPI_CLKCNT_L
by ESP_Lvxinyue
Tue Nov 27, 2018 6:24 am
Forum: Documentation
Topic: Document Requests
Replies: 46
Views: 23993

Re: Document Requests

[SPI] CS setup time does not work in full duplex I don't think you realise how huge problem this is. Full-duplex is the most common setup and most SPI peripherals require CS active several clocks before the data transfer. In full-duplex mode, setting SPI_CS_SETUP results in 1.5 SPI clock cycles bet...
by ESP_Lvxinyue
Wed Nov 21, 2018 2:50 am
Forum: Hardware
Topic: Future WROVER kit with 8 or 16MB flash.
Replies: 1
Views: 169

Re: Future WROVER kit with 8 or 16MB flash.

Hi,

ESP-WROVER-KIT now supports ESP32-WROVER-B with 4 MB flash. Custom order for 8/16 MB flash may be possible. Please contact our salesperson for more information. Thanks.
by ESP_Lvxinyue
Wed Nov 14, 2018 11:36 am
Forum: ESP32 Arduino
Topic: Technical Parameters of ESP-WROOM-32
Replies: 3
Views: 285

Re: Technical Parameters of ESP-WROOM-32

Hi, I are using ESP-WROOM-32 in an application. Please provide the following details regarding ble transmission of ESP-WROOM-32. 1) modulation bandwidth , 2) frequency channels and 3) data rate. 4) Tx Power Can we change above parameters programatically? If yes, please tell how to change these valu...
by ESP_Lvxinyue
Wed Oct 31, 2018 3:03 am
Forum: Hardware
Topic: PSRAM/SD card/PICO D4
Replies: 9
Views: 1311

Re: PSRAM/SD card/PICO D4

Hi,

For your reference, CS# is tied to either SD2 or SD3, and a 10k pull-up is necessary. Thanks.
by ESP_Lvxinyue
Mon Oct 29, 2018 11:23 am
Forum: Hardware
Topic: Looking for a ESP32‑D2WD module
Replies: 2
Views: 303

Re: Looking for a ESP32‑D2WD module

Hi,

I'm afraid there is no such ESP32 module. Further sales questions can be sent to https://www.espressif.com/en/company/co ... stions-crm. Thanks.

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