Search found 7 matches
- Sun Aug 07, 2022 4:22 pm
- Forum: General Discussion
- Topic: MQTT starts too slowly
- Replies: 6
- Views: 4530
Re: MQTT starts too slowly
Can ESP-NOW improve this situation? If so, i am interested in it, and what are the requirements for the MQTT server? As the MQTT server belongs to the operator,and can not be changed.
- Fri Aug 05, 2022 10:07 am
- Forum: ESP-IDF 中文讨论版
- Topic: MQTT启动太慢
- Replies: 1
- Views: 1658
MQTT启动太慢
我发现MQTT启动太慢:从调用esp_mqtt_client_start()函数,到返回连接成功,这个过程耗时7秒钟左右。我让服务器端工程师翻查一下登录日志,结果发现从登录连接开始到登录成功只需要花不到1秒钟。也就是说有6秒钟花在MQTT模块自身的初始化上。请问一下这种情况有办法优化一下吗:让整个过程耗时缩短。
- Fri Aug 05, 2022 10:02 am
- Forum: General Discussion
- Topic: MQTT starts too slowly
- Replies: 6
- Views: 4530
MQTT starts too slowly
When esp_mqtt_client_start was caleed,it takes 7 seconds to return connected state.Then I found that it took less than 1 second to connect from the beginning to return OK. Is there any way to shorten the time ahead?
- Wed Mar 30, 2022 3:59 pm
- Forum: ESP-IDF 中文讨论版
- Topic: ESP32-S2FN4R2烧录不了
- Replies: 0
- Views: 1611
ESP32-S2FN4R2烧录不了
我用ESP32-S2FN4R2芯片设计出来的板焊上ESP32-S2FN4R2后烧录不了,已经换过2片芯片了还是烧录不了,不知道是什么原因:IO0上电前已经接地了,IO18上电前也已经上拉10K电阻了,烧录脚是48、49脚(U0RXD,U0TXD),56脚也已经上拉高电平了。而我之前购买的ESP32-S2模组设计出来的板就能烧录。
- Wed Dec 08, 2021 10:36 am
- Forum: ESP-IDF 中文讨论版
- Topic: usb cam driver
- Replies: 0
- Views: 2916
usb cam driver
想要连接USB CAM,怎么获取到usb driver呢
- Thu Nov 11, 2021 12:44 am
- Forum: General Discussion
- Topic: modem(esp32+sim800c) stopped after recieved a packet
- Replies: 0
- Views: 1405
modem(esp32+sim800c) stopped after recieved a packet
board:esp32+sim800c,demo:Pppos_client,i found a problem:modem stopped after recieved a pcket,that will happen every time.This confused me. Is sim800c can't fit this demo? Can someone give some advice?here is the log: start up: [0;32mI (1141) pppos_example: GOT ip event!!![0m [0;32mI (1151) pppos_exa...
- Wed Nov 10, 2021 7:13 am
- Forum: ESP-IDF 中文讨论版
- Topic: esp32+sim800c接收到1包数据后就断开了
- Replies: 1
- Views: 3021
esp32+sim800c接收到1包数据后就断开了
环境是ESP32+SIM800C的硬件,运行的是Pppos client_main的例子。发现每次接收到MQTT下发的命令后,modem就断开了。如下的log: [0;32mI (1141) pppos_example: GOT ip event!!![0m [0;32mI (1151) pppos_example: PPP state changed event 266[0m [0;32mI (1161) pppos_example: MQTT other event id: 7[0m 【2021-11-10 13:45:41:738】[0;32mI (2451) pppos_example...