Search found 7 matches

by taxi_dong
Tue Jun 13, 2017 12:14 pm
Forum: General Discussion
Topic: esp32 UART support DMA or not?
Replies: 1
Views: 3806

esp32 UART support DMA or not?

Hi :
I update esp idf to the latest version,do not see dma info in the components/driver/uart.c. so it means DMA not support officially?
If so , is there any suggestion of how to implement DMA on UART?
thanks
by taxi_dong
Tue Apr 25, 2017 12:08 pm
Forum: General Discussion
Topic: ESP32 I2C Timing Question
Replies: 0
Views: 2612

ESP32 I2C Timing Question

Hi I need read 32KB/Second from a I2C slave device, I catch follow I2C wave from scope during I2C reading by ESP32 bad.jpg Meanwhile I have an reference platform connecting the same I2C slave device, the wave is follow good.jpg The code base is esp-idf-v2.0, upgraded from esp-idf-v2.0-rc1. ESP32 HW ...
by taxi_dong
Thu Apr 20, 2017 2:59 am
Forum: ESP-IDF
Topic: fail to compile esp-idf-v2.0 release on ubuntu linux env
Replies: 3
Views: 6970

Re: fail to compile esp-idf-v2.0 release on ubuntu linux env

Just try to download the v2.0 version by zip file download directly, the compile error is gone. So the code base download by my git command may be corrupted, or my git command is not right one.
by taxi_dong
Thu Apr 20, 2017 2:48 am
Forum: ESP-IDF
Topic: fail to compile esp-idf-v2.0 release on ubuntu linux env
Replies: 3
Views: 6970

fail to compile esp-idf-v2.0 release on ubuntu linux env

hi Yesterday I start to download new v2.0 release ================================================================= git clone https://github.com/espressif/esp-idf.git esp-idf-v2.0 cd esp-idf-v2.0/ git checkout v2.0 git submodule update --init =========================================================...
by taxi_dong
Thu Mar 16, 2017 5:36 am
Forum: ESP-IDF
Topic: Crash when configure GPIO9
Replies: 7
Views: 14141

Re: Crash when configure GPIO9

Update: I found follow info in web site. But not sure esp32 pdf include these info ========================================================================================= http://esp-idf.readthedocs.io/en/latest/api/peripherals/gpio.html GPIO & RTC GPIO Overview The ESP32 chip features 40 physical ...
by taxi_dong
Thu Mar 16, 2017 3:01 am
Forum: ESP-IDF
Topic: Crash when configure GPIO9
Replies: 7
Views: 14141

Re: Crash when configure GPIO9

Thanks for quick reply. I do use ESPWROOM32 module now
by taxi_dong
Thu Mar 16, 2017 1:42 am
Forum: ESP-IDF
Topic: Crash when configure GPIO9
Replies: 7
Views: 14141

Crash when configure GPIO9

Hello I am debugging ESP32 with voice control feature. GPIO9 is designed to control the reset pin of the sensor. Code: ================================================= #define RESET_GPIO 9 gpio_config_t io_conf; io_conf.intr_type = GPIO_PIN_INTR_DISABLE; io_conf.mode = GPIO_MODE_OUTPUT; io_conf.pin...