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by ESP_Angus
Fri May 29, 2020 3:57 am
Forum: ESP32 IDF
Topic: UART causing the ESP32 to reboot
Replies: 4
Views: 171

Re: UART causing the ESP32 to reboot

Remember that UART does not work on any pin, there are designated pins for the UART interfaces. It's a bit confusing, but the UARTs can actually work on any pins via the GPIO Matrix (see the relevant chapter in the TRM for all the details). If you change the pin numbers for uart_set_pin() when conf...
by ESP_Angus
Thu May 28, 2020 8:36 am
Forum: ESP32 Arduino
Topic: Problem enabling SecureBoot and FlashEncryption
Replies: 5
Views: 440

Re: Problem enabling SecureBoot and FlashEncryption

Hi vsimionescu, Thanks for the detailed report, please find answers to your questions: 1) Is this normal, did I misunderstand the auto encrypt with a self generated key process The initial encryption process can take a long time (tens of seconds to maybe a minute for a very big firmware). The bootlo...
by ESP_Angus
Thu May 28, 2020 3:12 am
Forum: ESP32 IDF
Topic: Device bricked on OTA update when esp-idf is updated from v3.1 to v4.0 [IDFGH-3384]
Replies: 7
Views: 488

Re: Device bricked on OTA update when esp-idf is updated from v3.1 to v4.0 [IDFGH-3384]

Thanks for the comprehensive report. I've edited this topic with an internal ID as we're tracking this issue internally.

Will get back to you ASAP.
by ESP_Angus
Wed May 27, 2020 7:48 am
Forum: ESP32 IDF
Topic: Where does crypto happen?
Replies: 3
Views: 391

Re: Where does crypto happen?

Hi tvonicken, The cryptography "heavy lifting" for TLS will happen on the CPU where the task which is establishing the connection is placed. If it's pinned to either core, it happens on that core. If un-pinned it can happen on either core. There isn't a dedicated "mbedtls task" like there is to hand...
by ESP_Angus
Wed May 27, 2020 6:31 am
Forum: ESP32 IDF
Topic: WinBond 16MB 133MHZ Flash not working
Replies: 4
Views: 222

Re: WinBond 16MB 133MHZ Flash not working

Sneaky memory manufacturers and their insistence on "megabit"!

Glad you got to the bottom of it, hope you can find a bigger chip soon.
by ESP_Angus
Wed May 27, 2020 4:01 am
Forum: ESP32 IDF
Topic: Flash encryption
Replies: 4
Views: 357

Re: Flash encryption

Hi filip, Sorry noone replied to you before now. In my case I leave storage data as decrypted and now the question is: whether partition storage should be readable by target.read_partition() after encryption? I try do this but I get error: UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8d in ...
by ESP_Angus
Wed May 27, 2020 1:52 am
Forum: ESP32 IDF
Topic: WinBond 16MB 133MHZ Flash not working
Replies: 4
Views: 222

Re: WinBond 16MB 133MHZ Flash not working

Hi rsimpsonbusa, As far as I know this flash chip model has not been tested with ESP32, so impossible to say for sure. All SPI NOR flash chips are similar but not identical, there is no universal standard for their behaviour. Using DIO or DOUT mode is the most likely to work on a new flash chip mode...
by ESP_Angus
Wed May 27, 2020 1:41 am
Forum: ESP32 IDF
Topic: Task not launching even with plenty of free internal RAM
Replies: 4
Views: 237

Re: Task not launching even with plenty of free internal RAM

Hi jsam, Internal memory (MALLOC_CAP_INTERNAL) on ESP32 covers both DRAM (8-bit capable) and IRAM (32-bit capable only). Stacks have to be allocated as DRAM. It's possible you have enough free internal memory in total, but not enough is 8-bit capable. You can substitute the calls as follows: heap_ca...
by ESP_Angus
Fri May 22, 2020 3:37 am
Forum: ESP-IDF 中文讨论版
Topic: ESP32 PICO D4,外接FLASH,如何使用
Replies: 1
Views: 129

Re: ESP32 PICO D4,外接FLASH,如何使用

Moderator's note: The same question has been asked and answered in English, here:
https://esp32.com/viewtopic.php?f=2&t=15762&p=60222
by ESP_Angus
Fri May 22, 2020 3:36 am
Forum: General Discussion
Topic: Multi-flash chips, how to select?
Replies: 2
Views: 248

Re: Multi-flash chips, how to select?

Hi, It's not possible to configure ESP32-PICO-D4 to boot from the external flash, this SPI configuration is programmed into the chip's OTP efuse bits. It's also not possible for both the SPI flash chips to be mapped into the address space at the same time, unfortunately. It's technically possible in...

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