Search found 17 matches

by ESP_Peter
Thu Jan 06, 2022 1:59 am
Forum: General Discussion
Topic: What's the difference between ESP32-S3-WROOM-1 and -2?
Replies: 4
Views: 14222

Re: What's the difference between ESP32-S3-WROOM-1 and -2?

Hi kartg0058033,

The GPIO35 ~ 37 is used by internal Octal SPI PSRAM/Flash, when you use ESP32-S3-DevKitC-1-NxR8V (with ESP32-S3-WROOM-2) and ESP32-S3-DevKitC-1-NxR8 (with ESP32-S3-WROOM-1-NxR8).
by ESP_Peter
Wed May 19, 2021 4:06 am
Forum: 硬件问题讨论
Topic: ESP32-WROVER-B 定制16M Flash版出现问题
Replies: 2
Views: 13262

Re: ESP32-WROVER-B 定制16M Flash版出现问题

你查看一下,你的上电log打印是不是一样的。如果是一样的,请检查一下IO12/MTDI 在模组上电时是不是被拉高了。 IO12/MTDI上电时需要确保为低电平或者这个引脚先悬空,再试试看。
by ESP_Peter
Wed May 19, 2021 3:58 am
Forum: 硬件问题讨论
Topic: ESP32-WROOM-32DC 使用Arduino IDE 不能上传程序,请大佬给给诊断一下
Replies: 1
Views: 4248

Re: ESP32-WROOM-32DC 使用Arduino IDE 不能上传程序,请大佬给给诊断一下

你先试一下手动进入下载模式,看模块打印信息正常吗?
1. 找一个串口调试工具软件,PCB端运行软件,配置好对应连接板子的USB端口号,波特率设置为115200bps。
2. 按住boot按键,然后再按一下EN按键复位,正常会进入下载模式,并会有如下信息打印出来, 说明能正常进下载模式了,UART通讯应该也是正常的。

rst:0x1 (POWERON_RESET),boot:0x26 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_FEO_V2))
waiting for download
by ESP_Peter
Fri Nov 06, 2020 9:38 am
Forum: General Discussion
Topic: Regarding ESP32-WROOM-32E certifications
Replies: 7
Views: 7353

Re: Regarding ESP32-WROOM-32E certifications

Hi ,
The KCC certificate of ESP32-WROOM-32E will be available on end of December.
by ESP_Peter
Wed Sep 02, 2020 11:36 am
Forum: ESP 生产支持讨论版
Topic: ESP32 RF test tool 問題
Replies: 5
Views: 29388

Re: ESP32 RF test tool 問題

你好,请问:1.RF test tool 放置的目录中是否有中文路径?2.是否有杀毒软件在工作?
by ESP_Peter
Fri Jul 10, 2020 6:34 am
Forum: General Discussion
Topic: Tiny hole near pins 15 and 13
Replies: 2
Views: 4166

Re: Tiny hole near pins 15 and 13

You can cover it up with a label . It is location hole for shield cover SMT production.
by ESP_Peter
Tue Jul 07, 2020 4:32 am
Forum: Hardware
Topic: ESP32-U4WDH embedded Flash and Eth LAN8720
Replies: 1
Views: 3010

Re: ESP32-U4WDH embedded Flash and Eth LAN8720

Please refer to following notes in "2.2 Pin Description " of ESP32 chip's datasheet. The pin-pin mapping between ESP32-D2WD/ESP32-U4WDH and the embedded flash is as follows: GPIO16 = CS#, GPIO17 = IO1/DO, SD_CMD = IO3/HOLD#, SD_CLK = CLK, SD_DATA_0 = IO2/WP#, SD_DATA_1 = IO0/DI. The pins used for em...
by ESP_Peter
Mon Mar 30, 2020 2:56 am
Forum: Hardware
Topic: Can't buy memory PSRAM-32
Replies: 6
Views: 11539

Re: Can't buy memory PSRAM-32

The latest PSRAM is ESP-PSRAM64 (1.8v) and ESP-PSRAM64H (3.3v) .It is supported in IDF SDK.
https://www.espressif.com/sites/default ... eet_en.pdf
by ESP_Peter
Fri Feb 28, 2020 1:06 pm
Forum: Hardware
Topic: ESP32 software behaviour during radiated emissions tests
Replies: 2
Views: 5475

Re: ESP32 software behaviour during radiated emissions tests

In the radiated emissions testing, you should select the "TX Continue" test mode in the ESP RF Test Tool . The duty cycle is above 90% in the "TX Continue" mode.
by ESP_Peter
Sat Feb 08, 2020 9:36 am
Forum: 硬件问题讨论
Topic: PCB图纸中绿色(NC)的含义
Replies: 1
Views: 12678

Re: PCB图纸中绿色(NC)的含义

你好,绿色NC表示PCB上有预留焊盘位置,实际器件没有在PCB上贴片。