Search found 117 matches

by ESP_houwenxiang
Tue Apr 14, 2020 4:08 am
Forum: ESP32 IDF
Topic: How to input audio using I2S PDM
Replies: 4
Views: 431

Re: How to input audio using I2S PDM

I mean the non-PDM mode configuration
by ESP_houwenxiang
Tue Apr 14, 2020 2:03 am
Forum: ESP32 IDF
Topic: How to input audio using I2S PDM
Replies: 4
Views: 431

Re: How to input audio using I2S PDM

Hi, @chris_oz

I saw the datasheet, The documentation says that this MIC uses a industry-standard 24-bit I²S interface. When using the I2S interface, what are your configuration parameters?
by ESP_houwenxiang
Fri Apr 10, 2020 6:04 am
Forum: General Discussion
Topic: Data loss of esp32 serial port
Replies: 9
Views: 1650

Re: Data loss of esp32 serial port

The serial ports used by master esp32 as shown in the attachment picture. You mean when serial1 and serial2 are not sending data,output high level, will cause serial0 to a intermediate level,and the serial sending would be abnormal? If all of the 3 serial ports are sending at the same time,output l...
by ESP_houwenxiang
Fri Apr 10, 2020 2:37 am
Forum: General Discussion
Topic: Data loss of esp32 serial port
Replies: 9
Views: 1650

Re: Data loss of esp32 serial port

I think this may be the reason. For example, when A needs to send data to D. At this time B and C are in the IDLE state( output high level). the low level of A output will be pulled by B and C, at intermediate level (perhaps 1.5V) . Can you look at the waveform with an oscilloscope ?
by ESP_houwenxiang
Fri Apr 10, 2020 2:23 am
Forum: General Discussion
Topic: Data loss of esp32 serial port
Replies: 9
Views: 1650

Re: Data loss of esp32 serial port

Do you use RS485 or directly connect the gpio of the four UARTs together?
by ESP_houwenxiang
Thu Apr 09, 2020 11:15 am
Forum: General Discussion
Topic: Simple interrupt based serial terminal on esp32
Replies: 4
Views: 2040

Re: Simple interrupt based serial terminal on esp32

Hi, lalleglad I think you don't need to use callbacks. The following code may meet your needs: #include <stdio.h> #include <string.h> #include "freertos/FreeRTOS.h" #include "freertos/queue.h" #include "freertos/task.h" #include "driver/uart.h" #include "driver/gpio.h" #define ECHO_TEST_TXD (GPIO_NU...
by ESP_houwenxiang
Tue Mar 17, 2020 6:25 am
Forum: ESP32 IDF
Topic: Custom RMT interrupt handler in the current master.
Replies: 1
Views: 1530

Re: Custom RMT interrupt handler in the current master.

HI, raldone01

thank you for reporting this issue. we will fix this issue soon
by ESP_houwenxiang
Tue Mar 17, 2020 5:10 am
Forum: ESP32 IDF
Topic: gpio_wakeup_disable has no impact, with test case
Replies: 2
Views: 1147

Re: gpio_wakeup_disable has no impact, with test case

Hi, kuhatovuk

Thanks for reporting this issue. We will fix it soon.
by ESP_houwenxiang
Mon Mar 16, 2020 10:14 am
Forum: ESP32 IDF
Topic: RS485 UART returns incorrect messages
Replies: 2
Views: 1170

Re: RS485 UART returns incorrect messages

RS485 is half-duplex communication, the data sent is also received, so when you finish sending data, you need to call `uart_flush_input`.
Not sure if it solves your issue

thanks !!

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