Search found 28 matches

by Daniel
Fri Aug 11, 2023 1:11 am
Forum: ESP-IDF 中文讨论版
Topic: 【已解决】ESP32S3官方例程 wifi->station 多块板测试连接不上WiFi
Replies: 2
Views: 2222

Re: ESP32S3官方例程 wifi->station 多块板测试连接不上WiFi

问题找到了,是晶振的谐波影响到了wifi的信号。


无源晶振
ESP32-S3 的无源晶振部分电路如图 6 所示,其中外部匹配电容 C1、C4 具体值需要通过对系统测试后进行调
节确定。XTAL_P 时钟走线上请务必预留一个串联电阻(初始可使用 0 Ω),以减小晶振的驱动能力,减弱晶振
谐波对射频性能的影响。


这是硬件设计指南里的说的。我们按照说明,在晶振串了一个0 Ω电阻,结果wifi收干扰不可用,换成100Ω电阻就可以了。 :D
by Daniel
Mon Jul 24, 2023 1:09 am
Forum: ESP-IDF 中文讨论版
Topic: 【已解决】ESP32S3官方例程 wifi->station 多块板测试连接不上WiFi
Replies: 2
Views: 2222

【已解决】ESP32S3官方例程 wifi->station 多块板测试连接不上WiFi

问题描述: 运行的程序是wifi->station程序 1.我们自己画的PCB板子,以前用过ESP32,ESP32S2在连接WiFi上均没有问题,现在在ESP32S3时,连接不上WiFi。 2.板子搭载了一个xn297无线模块,拆掉该无线模块后还是不行 3.蓝牙功能均没有问题,甚至可以用蓝牙进行OTA更新 4.WiFi打开时,明显有反应,就是连接不上 5.已经在多块PCB板测试,均是如此 以下是运行日志: ESP-ROM:esp32s3-20210327 Build:Mar 27 2021 rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT) SPI...
by Daniel
Sun Sep 26, 2021 3:25 am
Forum: ESP-IDF 中文讨论版
Topic: 如何在esp-idf 上支持1GB的ESP32S2的程序编译
Replies: 0
Views: 2002

如何在esp-idf 上支持1GB的ESP32S2的程序编译

在数据手册上看到ESP32S2是支持1GB 的flash和1GB的RAM的,但是在ESP-IDF的配置文件好像还是最多16MB的。那如何去编译超过16MB的flash的ESP32S2呢?求解答!谢谢。
by Daniel
Tue Mar 05, 2019 7:09 am
Forum: General Discussion
Topic: Where to buy Oled/TFT
Replies: 2
Views: 4852

Re: Where to buy Oled/TFT

You can buy anything on Taobao.comhttps://www.taobao.com
by Daniel
Tue Mar 05, 2019 7:07 am
Forum: General Discussion
Topic: How to encrypt the "gatt_server" Bluetooth program?
Replies: 4
Views: 6921

Re: How to encrypt the "gatt_server" Bluetooth program with two Bluetooth services?

Here is your answer. Just like the example "gatt_security_serverhttps://github.com/espressif/esp-idf/tr ... ity_server". What else do you want to know or what you dont understand? When I encrypt with two services Bluetooth, there are two cases: On the IOS system: the first connection is successful,...
by Daniel
Tue Mar 05, 2019 7:02 am
Forum: ESP-IDF 中文讨论版
Topic: 如何为两个服务的蓝牙加密?
Replies: 5
Views: 11867

Re: 如何为两个服务的蓝牙加密?

Hi, Daniel Do you have more updates for this topic? Thanks. gatt_security_server example 例程是单个服务,这个我已经能做到,但是对于“gatt_server”“ https://github.com/espressif/esp-idf/tree/master/examples/bluetooth/gatt_server ”这个带有两个服务的例程来说,加密对我们来说就显得有点过于复杂,摸不着头脑了。如果这个“gatt_server”例程可以加密,那我的问题就解决了。 谢谢 这是我问问题的答案! https:...
by Daniel
Thu Feb 21, 2019 1:42 am
Forum: ESP-IDF 中文讨论版
Topic: 如何为两个服务的蓝牙加密?
Replies: 5
Views: 11867

Re: 如何为两个服务的蓝牙加密?

ESP_Alvin wrote:
Wed Jan 02, 2019 2:11 am
Hi, Daniel

Do you have more updates for this topic?

Thanks.
gatt_security_server example 例程是单个服务,这个我已经能做到,但是对于“gatt_server”“https://github.com/espressif/esp-idf/tr ... att_server”这个带有两个服务的例程来说,加密对我们来说就显得有点过于复杂,摸不着头脑了。如果这个“gatt_server”例程可以加密,那我的问题就解决了。
谢谢
by Daniel
Mon Dec 17, 2018 1:27 am
Forum: General Discussion
Topic: How to encrypt the "gatt_server" Bluetooth program?
Replies: 4
Views: 6921

Re: How to encrypt the "gatt_server" Bluetooth program with two Bluetooth services?

Here is your answer. Just like the example "gatt_security_serverhttps://github.com/espressif/esp-idf/tr ... ity_server". What else do you want to know or what you dont understand? When I encrypt with two services Bluetooth, there are two cases: On the IOS system: the first connection is successful,...
by Daniel
Sat Dec 15, 2018 1:39 am
Forum: General Discussion
Topic: How to encrypt the "gatt_server" Bluetooth program?
Replies: 4
Views: 6921

How to encrypt the "gatt_server" Bluetooth program?

How to encrypt the "gatt_server" https://github.com/espressif/esp-idf/tr ... att_serverBluetooth program? Just like the example "gatt_security_serverhttps://github.com/espressif/esp-idf/tr ... ity_server".

thanks,
Daniel
by Daniel
Thu Dec 13, 2018 1:03 am
Forum: ESP-IDF 中文讨论版
Topic: 如何为两个服务的蓝牙加密?
Replies: 5
Views: 11867

Re: 如何为两个服务的蓝牙加密?

如果问题过于复杂,那么我简单一点,如何把“gatt_server”https://github.com/espressif/esp-idf/tr ... att_server这个带有两个服务的蓝牙进行加密?