Search found 55 matches

by costaud
Wed Dec 19, 2018 9:45 am
Forum: ESP-IDF 中文讨论版
Topic: esp32有支持国产RTOS rt-thread的计划么?
Replies: 4
Views: 3713

Re: esp32有支持国产RTOS rt-thread的计划么?

个人觉得用FreeRTOS可以满足需求。
不太了解rt-thread的特性,如果是国产RTOS可能不够通用。
在应用代码中,可以加一层操作系统的适配来进行移植。
by costaud
Fri Dec 07, 2018 9:29 am
Forum: Hardware
Topic: I2S PDM clock
Replies: 2
Views: 1421

Re: I2S PDM clock

What kind of scope are you using, e.g. the bandwidth and sample rate ?
It's also related to the way you connect the signal and ground.
by costaud
Thu Dec 06, 2018 4:18 am
Forum: ESP-IDF 中文讨论版
Topic: station模式下,esp32可以连接隐藏名称的路由器吗?
Replies: 5
Views: 2471

Re: station模式下,esp32可以连接隐藏名称的路由器吗?

zhoupeng wrote:
Tue Dec 04, 2018 7:55 am
idf支持连接隐藏名称的路由器吗?
支持。
by costaud
Thu Dec 06, 2018 4:13 am
Forum: ESP-IDF 中文讨论版
Topic: 关于ESP32 IO口配置成中断的问题
Replies: 5
Views: 3294

Re: 关于ESP32 IO口配置成中断的问题

为什么不直接用第一个函数的初始化代码 ?
by costaud
Thu Dec 06, 2018 4:02 am
Forum: ESP IoT Solution
Topic: Development of cloud for ESP
Replies: 2
Views: 1835

Re: Development of cloud for ESP

I think this is the one you can refer to

https://github.com/espressif/esp-idf/tr ... ls/aws_iot
by costaud
Mon Dec 03, 2018 12:32 pm
Forum: General Discussion
Topic: trouble with Uart connection 16/17 via hardware serial
Replies: 1
Views: 1043

Re: trouble with Uart connection 16/17 via hardware serial

I have a voice recognition module from Veeer (EasyVR v3) and when I connect it to the PC, I get a 95% or above recognition rate. As soon as I connect it to the ESP32 (via hardware serial on pins 16 and 17) I am only getting about 20-30% recognition rate. I've already sent a message off to their sup...
by costaud
Fri Nov 30, 2018 8:26 am
Forum: ESP-IDF 中文讨论版
Topic: 使用ledc_set_freq()出现丢失脉冲
Replies: 7
Views: 4921

Re: 使用ledc_set_freq()出现丢失脉冲

https://github.com/espressif/esp-iot-so ... or/stepper

这里有个实现,ledc输出直接连到pcnt的输入,可以准确控制脉冲个数。

关于变频的问题,我们需要些时间来测试下。
by costaud
Fri Nov 30, 2018 8:17 am
Forum: ESP-IDF 中文讨论版
Topic: 使用ledc_set_freq()出现丢失脉冲
Replies: 7
Views: 4921

Re: 使用ledc_set_freq()出现丢失脉冲

请问是想要控制外部的 步进电机驱动芯片吗?

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