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by ESP_Angus
Wed Feb 24, 2021 6:15 am
Forum: ESP-IDF
Topic: mbedTLS with dynamic memory [IDFGH-4803]
Replies: 2
Views: 97

Re: mbedTLS with dynamic memory [IDFGH-4803]

Hi bigfede, Sorry noone got back to you about this earlier. I've edited the post title with our internal tracking ID. Which ESP-IDF version are you using? (The program should log this during startup if unsure.) Also, are you able to decode the backtrace when it crashes? Running the program in the "i...
by ESP_Angus
Tue Feb 23, 2021 8:42 am
Forum: ESP-IDF
Topic: esp-idf and emacs with flycheck-mode: esp_log.h: No such file or directory
Replies: 2
Views: 102

Re: esp-idf and emacs with flycheck-mode: esp_log.h: No such file or directory

Hi ruquay, I use emacs for most of my IDF development, but I haven't had much luck with flycheck so far. It sounds like you've configured flycheck-clang, which means that you'll need the correct include paths but also you may need an LLVM/Clang with ESP32 support for Clang to not produce other error...
by ESP_Angus
Mon Feb 22, 2021 3:10 am
Forum: General Discussion
Topic: ESP32 life-time
Replies: 11
Views: 407

Re: Long live

How exactly does it fail when it fails? Do you have a schematic? Especially with a relais or external analog inputs, high-voltage spikes could play a role here. The first chip hung up and restarted after few seconds, so i reduced the frequency. The second chip was my fault, i erased flash too often...
by ESP_Angus
Wed Feb 17, 2021 3:35 am
Forum: Hardware
Topic: Using segmentation fault to bridge different memory segments?
Replies: 2
Views: 110

Re: Using segmentation fault to bridge different memory segments?

Hi Marc, I'm afraid this isn't possible. The "MMU" in ESP32 is limited to cache access (PSRAM and flash only), it's not possible to remap internal memory access. Do you have 224KB of free contiguous space immediately on boot (after other memory is reclaimed by the bootloader?) If yes, then you could...
by ESP_Angus
Tue Feb 16, 2021 10:42 pm
Forum: Hardware
Topic: ESP32-C3F & external RAM ?
Replies: 1
Views: 105

Re: ESP32-C3F & external RAM ?

Hi DF,

I'm afraid that ESP32-C3 does not support external RAM. For external PSRAM you'll need to look to ESP32, ESP32-S2, or ESP32-S3.

Angus
by ESP_Angus
Mon Feb 15, 2021 10:36 pm
Forum: General Discussion
Topic: ESP32-C3 RISC-V Core - ...What i found just in time ...
Replies: 20
Views: 8546

Re: ESP32-C3 RISC-V Core - ...What i found just in time ...

Hi citoyx, But this no info about what riscV core is it and who is the factory maker of this chip. The RISC-V core is a custom design. It supports the RV32-IMC extensions. More details about the CPU will be published in the ESP32-C3 Technical Reference Manual which is currently being finalised, than...
by ESP_Angus
Mon Feb 15, 2021 10:24 pm
Forum: ESP-IDF
Topic: what is the precise difference between xtensa HIFI3/4/5 and ESP32 core?
Replies: 3
Views: 159

Re: what is the precise difference between xtensa HIFI3/4/5 and ESP32 core?

I believe the base instruction set architecture is the same, but sharing a base instruction set doesn't mean that all CPU features are the same. One of the main features of the xtensa architecture is that it's easily e xtens ible with new instructions, so the DSP cores will have additional specific ...
by ESP_Angus
Mon Feb 15, 2021 12:35 am
Forum: Hardware
Topic: 3V3 PIN to GND DC impedance
Replies: 4
Views: 219

Re: 3V3 PIN to GND DC impedance

Hi sergio, By measuring DC impedance you mean that you're measuring resistance, is that right? Are you using a multimeter or some other type of tester? This is probably not a meaningful way to characterize an active electronic part. The measurement is probably showing some interaction between the ch...
by ESP_Angus
Sun Feb 14, 2021 10:22 pm
Forum: ESP32 Arduino
Topic: esp_wifi_stop() is slow
Replies: 4
Views: 241

Re: esp_wifi_stop() is slow

Hi Chris, Calling esp_wifi_stop() will try to do a "graceful" stop of the internal Wi-Fi state, which may include things like flushing buffers if there is an esp_now() packet queued for retry. I'm afraid it's not really designed for rapid pause/resume use case. For minimum average power consumption,...
by ESP_Angus
Fri Feb 12, 2021 3:11 am
Forum: ESP32 Arduino
Topic: Debian Arduino - AttributeError: 'Serial' object has no attribute 'dtr'
Replies: 2
Views: 166

Re: Debian Arduino - AttributeError: 'Serial' object has no attribute 'dtr'

Hi psilospiral, Very old version of pyserial (before 3.0 I think) don't have the 'dtr' property and are missing some other API features. Note that the pyserial version and the python version are different, it's just a coincidence that the numbers are similar. Pyserial up to the current version 3.5 c...

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