Search found 74 matches

by ESP-Marius
Wed Nov 22, 2023 3:29 am
Forum: General Discussion
Topic: Getting Wake Cause in Wake Stub not working on S3
Replies: 3
Views: 1370

Re: Getting Wake Cause in Wake Stub not working on S3

Looking at the TRM, RTC_CNTL_WAKEUP_STATE_REG does not seem to be the correct register for reading the wake-up cause on S3. RTC_CNTL_WAKEUP_CAUSE is from RTC_CNTL_SLP_WAKEUP_CAUSE_REG You can take a look at rtc_cntl_ll_get_wakeup_cause() to see how it is done on different chips (you could use this i...
by ESP-Marius
Fri Oct 22, 2021 3:20 am
Forum: Hardware
Topic: RSA peripheral 50% slower on ESP32-S3/C3 than S2?
Replies: 11
Views: 14693

Re: RSA peripheral 50% slower on ESP32-S3/C3 than S2?

Sorry, as far as I know there is no secret registers that allow you to perform just one modular multiplication instead of two on these newer chips. I'll forward the question to the guy on our digital team responsible for this peripheral and see if he has any ideas, but most likely there isn't any wa...
by ESP-Marius
Mon Oct 18, 2021 2:48 am
Forum: Hardware
Topic: RSA peripheral 50% slower on ESP32-S3/C3 than S2?
Replies: 11
Views: 14693

Re: RSA peripheral 50% slower on ESP32-S3/C3 than S2?

You are correct that the peripheral is the same, but the way we access the memory has changed and unfortunately this means the RSA on C3/S3 will be slower than S2, but still an improvement from ESP32. 50% seems to be within the expected range. I see that the TRM RSA performance data for S3/C3 do not...
by ESP-Marius
Fri Oct 15, 2021 1:50 am
Forum: ESP-IDF
Topic: ESP download modes
Replies: 5
Views: 7344

Re: ESP download modes

Hi, Any updates regarding how to enable the "Permanently switch to Secure mode (recommended) option? SECURE_ENABLE_SECURE_ROM_DL_MODE is only supported on S2 and later chips, so that's why you are unable to enable it. Sorry for your confusion, the latest docs have a note mentioning that it is not su...
by ESP-Marius
Thu Sep 02, 2021 2:37 am
Forum: ESP-IDF
Topic: esp_aes_gcm_finish(): assert triggered (BUG?)
Replies: 4
Views: 2848

Re: esp_aes_gcm_finish(): assert triggered (BUG?)

Hi,

Yeah this looks like a bug. I think the length here should always be 16 bytes, and for smaller tags it should be clipped afterwards.

I'll look into and fix this. In the meanwhile you should be able to bypass this by disabling MBEDTLS_HARDWARE_GCM if this is issue is a blocker for you.
by ESP-Marius
Sat Jul 31, 2021 12:47 am
Forum: ESP-IDF
Topic: UART ROM download mode when using Flash Encryption
Replies: 1
Views: 2639

Re: UART ROM download mode when using Flash Encryption

Hi, With secure mode you would still be able to encrypt your binary on the host, flash it and boot successfully. This is of course only possible if you already know the key burned to the ESP32. If you don't have any specific reason to keep secure mode on we still recommend disabling the download mod...
by ESP-Marius
Wed Jul 21, 2021 1:51 am
Forum: General Discussion
Topic: Trouble understanding I2C examples
Replies: 1
Views: 2154

Re: Trouble understanding I2C examples

Hi, We know some of our examples can be a bit complex when you want to get started with just some basic functionality. To remedy this we actually recently added a "simple I2C" example just to show case basic functionality like this. Unfortunately it hasnt been synced to Github yet, but i'll attach t...
by ESP-Marius
Tue Jul 20, 2021 1:46 am
Forum: ESP-IDF
Topic: How to increase .bss size for ULP?
Replies: 5
Views: 3938

Re: How to increase .bss size for ULP?

CONFIG_ESP32_ULP_COPROC_RESERVE_MEM Should be the correct way of increasing it. Any chance CONFIG_ESP32S2_ULP_COPROC_RESERVE_MEM is defined in your sdkconfig as well? That could potentially overwrite the setting. Are you able to provide a simple example that reproduce this behaviour? If so I'd be h...
by ESP-Marius
Tue Jun 08, 2021 12:11 am
Forum: General Discussion
Topic: Documenting an esp32 project with Doxygen/Breathe/Sphinx
Replies: 2
Views: 2976

Re: Documenting an esp32 project with Doxygen/Breathe/Sphinx

We are actually working on decoupling the documentation build system we have from IDF in order to make it easier for other Espressif projects to use it. Seems like this something that could benefit you as well! For your use-case it seems like you might not need any of functionality we added on-top o...
by ESP-Marius
Sun Apr 25, 2021 1:45 am
Forum: ESP-IDF
Topic: Using SPI Master in ESP32-C3
Replies: 18
Views: 19952

Re: Using SPI Master in ESP32-C3

Great to hear that you got it working! You mean exclude the whole component from being built? Then the easiest way is probably to include something like this at the top of the component you dont wanna compile's CMakeLists.txt idf_build_get_property(target IDF_TARGET) if(${target} STREQUAL "esp32c3")...