could you please pull the latest master code, and enable the logs, see what happened~ You can enable the logs by the following steps: python build.py menuconfig -> Component config -> Log output -> Default log verbosity -> Info python build.py menuconfig -> Component config -> AT -> Enable ESP-AT De...

you can refer to https://docs.espressif.com/projects/esp ... onnections.

Once received data, AT will prompt "+IPD,<link_id>,<len>:<data>"

current esp-at firmware doesn't support AT+PPPSTART command, i would like to suggest you seek help from the firmware provider.

May I ask if this is your new project? We suggest that you choose ESP32-C2 instead of ESP8266, which has more RAM and higher support priority. From your question alone, it may be related to the network or insufficient RAM resources. You may need to open the debug log while wireshark captures the spe...

i think AT+HTTPCGET supports to download binary files. Could you please provide the reproduce steps, thanks.

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我用你提供的附件 factory_param_data.csv，是可以正常编译的。
您再 double check 一下文件是否被正确保存了，步骤是否正确哈。还有问题的话，麻烦提供一下完整的日志，最好提供一下复现代码。
您也可以在 build.py 里添加一些打印，辅助看看哪里出问题了：https://github.com/espressif/esp-at/blo ... ld.py#L275

ESP 设备支持 GPIO 交互矩阵，可以将任意一个没有被占用的 GPIO 用作 UART 的管脚。您没有必要一定要选用 GPIO10 & GPIO9 作为 UART 的管脚。 1. 请参考 ESP32 技术参考手册：https://www.espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_cn.pdf 2. 具体用法参考 esp-idf 下的 esp-idf/examples/peripherals/uart/uart_events 示例。 3. 也可以参考：https://git...

参考：viewtopic.php?f=34&t=39178&p=130113#p130113

参考：viewtopic.php?f=34&t=39178&p=130113#p130113

keep-alive 是在和服务器交互时，客户端发送 keep-alive 包，服务器没有响应时才会关闭。你说的关闭，需要进一步抓包或者对比验证 确认是客户端发送的关闭还是服务器发送的关闭。
从以为经验看，服务器为了防止 DDOS 攻击，通常会主动关闭那些没有数据交互的连接。

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