Search found 1515 matches

by ESP_igrr
Wed Oct 09, 2019 9:13 am
Forum: ESP32 IDF
Topic: ESP-IDF v3.3 LTS clarification
Replies: 7
Views: 656

Re: ESP-IDF v3.3 LTS clarification

The documented approach is to use the -1.2 installer to v3.3, and use the -2.0 (now -2.1) installer for 4.x. However, the 2.1 installer actually includes some logic to support v3.3 version. If you choose to download the v3.3.x release using the installer, it will create an "IDF command prompt" short...
by ESP_igrr
Tue Oct 08, 2019 5:02 pm
Forum: ESP32 IDF
Topic: Increase SD frequency clock with SPI mode to 40MHz
Replies: 3
Views: 84

Re: Increase SD frequency clock with SPI mode to 40MHz

Hi gunar.kroeger,

I'm afraid the SPI driver doesn't support 40MHz clock frequency in full duplex mode. The highest frequency is 26.6 MHz, see https://docs.espressif.com/projects/esp ... iderations.
by ESP_igrr
Tue Oct 08, 2019 5:00 pm
Forum: ESP32 IDF
Topic: ESP-IDF 4.0-beta1 Environment variable problems
Replies: 3
Views: 118

Re: ESP-IDF 4.0-beta1 Environment variable problems

Thank you for reporting the issue. Could you please attach (or send me by a PM) the value of your PATH environment variable before running export.bat?
by ESP_igrr
Fri Sep 27, 2019 8:49 am
Forum: ESP32 IDF
Topic: SDMMC Thread safety
Replies: 2
Views: 153

Re: SDMMC Thread safety

I do not implement any semaphore on sdmmc driver on my own. SDMMC driver does not have any internal mutexes to protect from concurrent access. See https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/storage/sdmmc.html#thread-safety. If you use SDMMC APIs directly (not through a file...
by ESP_igrr
Thu Sep 26, 2019 2:48 pm
Forum: General Discussion
Topic: freeRTOS / Default Events/Tasks Clarification please....
Replies: 9
Views: 271

Re: freeRTOS / Default Events/Tasks Clarification please....

Shouldn't the Wifi be on the "Protocol" CPU? Why name them Protocol/App if it isn't for a good reason... right? No, actually these names do not necessarily represent how these CPUs should be used. They are a leftover from the earlier design concept where two CPUs had more or less fixed purpose. In ...
by ESP_igrr
Thu Sep 26, 2019 2:40 pm
Forum: ESP32 IDF
Topic: How to change GCC version required
Replies: 2
Views: 107

Re: How to change GCC version required

Which ESP-IDF version do you intend to use?

Documentation is versioned in the same way as ESP-IDF, so if you are using ESP-IDF v3.3, then you need to refer to the docs at https://docs.espressif.com/projects/esp-idf/en/v3.3/.
by ESP_igrr
Thu Sep 26, 2019 2:37 pm
Forum: ESP32 IDF
Topic: Programming WROOM using Jtag
Replies: 1
Views: 109

Re: Programming WROOM using Jtag

WROOM modules come with AT command application loaded, and that application configures GPIOs 12-15 as SPI slave interface, which makes it impossible to use JTAG.

If you are placing an order directly with Espressif, you may ask to get the modules programmed in a different way, i think.
by ESP_igrr
Thu Sep 26, 2019 2:34 pm
Forum: General Discussion
Topic: gdb does not work
Replies: 1
Views: 94

Re: gdb does not work

Can you please try the following before running xtensa-esp32-elf-gdb? Assuming you are in the Windows Command Prompt:

set TERM=xterm

or export TERM=xterm if you are in a Mingw32 window.
by ESP_igrr
Thu Sep 26, 2019 2:33 pm
Forum: Hardware
Topic: LEDC in light sleep, PICO-D4
Replies: 6
Views: 267

Re: LEDC in light sleep, PICO-D4

No, in light sleep mode all the peripherals are clock gated, including the LEDC.
You may implement some form of PWM using the ULP coprocessor, which will keep running even in light sleep.
by ESP_igrr
Wed Sep 25, 2019 9:24 pm
Forum: ESP32 IDF
Topic: Error to install esp-idf
Replies: 3
Views: 180

Re: Error to install esp-idf

Please try the following steps to troubleshoot this: 1. From the command line, run "python3 -m pip install virtualenv" and see if this works 2. After that, try to create a virtual environment manually: "python3 -m virtualenv myenv" in some directory you can write to (e.g. C:\ESP) 3. Delete C:\\ESP\\...

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