Search found 1521 matches

by ESP_igrr
Thu Nov 07, 2019 7:40 pm
Forum: General Discussion
Topic: Adress 0x40060000-0x4006FFFF 64 KB Reserved adresses & ESP32-S2
Replies: 2
Views: 155

Re: Adress 0x40060000-0x4006FFFF 64 KB Reserved adresses & ESP32-S2

Hi Olof, This range is mapped to 64kB of ROM. There is another address range on the data bus which is mapped to the same physical 64kB range. Part of this range is occupied by code, part by rodata. By the way, since you mentioned Qemu, I wanted to point you to https://github.com/espressif/qemu — it ...
by ESP_igrr
Fri Nov 01, 2019 10:26 am
Forum: ESP IoT Solution 中文讨论版
Topic: 协处理器重启两次才能唤醒主CPU一次??
Replies: 1
Views: 388

Re: 协处理器重启两次才能唤醒主CPU一次??

This register is used to check if the RTC state machine is ready for a wakeup instruction from the ULP. If it is not ready yet, we can stop the ULP program and then try again on the next sleep cycle. #define RTC_CNTL_LOW_POWER_ST_REG (DR_REG_RTCCNTL_BASE + 0xc0) /* RTC_CNTL_RDY_FOR_WAKEUP : R/0; bit...
by ESP_igrr
Fri Nov 01, 2019 10:18 am
Forum: ESP32 IDF
Topic: Is there an ESP32 ULP emulator/simulator?
Replies: 2
Views: 483

Re: Is there an ESP32 ULP emulator/simulator?

Sorry, we don't have this planned, but we are open to suggestions. Do you have any ideas how would such emulator work? If this would be a standalone desktop tool, this would be of limited use since it's hard to test interaction between the main program and the ULP program, right? If emulation would ...
by ESP_igrr
Tue Oct 29, 2019 10:25 pm
Forum: ESP32 IDF
Topic: OpenOCD says for ESP32 DevKitcV4: unsupported FTDI chip type: 0x0100
Replies: 3
Views: 162

Re: OpenOCD says for ESP32 DevKitcV4: unsupported FTDI chip type: 0x0100

You are passing the following argument to OpenOCD: -f interface/ftdi/esp32_devkitj_v1.cfg — it tells OpenOCD that the adapter is "esp32 devkit", while in fact it is jlink. There is a jlink.cfg file in OpenOCD, maybe you can try it.
by ESP_igrr
Tue Oct 29, 2019 6:40 am
Forum: ESP32 IDF
Topic: Issues: latest toolchain install on Windows
Replies: 4
Views: 381

Re: Issues: latest toolchain install on Windows

Have you by any chance built the same project first with "stable" and then with "latest" IDF? If yes, please try deleting the build directory before switching versions. The following error indicates that something is wrong with the setting of IDF_PATH, and it may be because CMake caches this variabl...
by ESP_igrr
Sat Oct 26, 2019 7:39 am
Forum: ESP32 IDF
Topic: Limiting compilation of all libraries
Replies: 2
Views: 132

Re: Limiting compilation of all libraries

Hi Julio, If you are using the CMake build system, you can set COMPONENTS variable to a short list of components you are actually using (see https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html#optional-project-variables). By default the main component implicitly "REQUI...
by ESP_igrr
Wed Oct 09, 2019 9:13 am
Forum: ESP32 IDF
Topic: ESP-IDF v3.3 LTS clarification
Replies: 7
Views: 834

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: 4
Views: 240

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: 224

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: 235

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...

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