Search found 3529 matches

by WiFive
Tue Sep 20, 2022 5:49 pm
Forum: General Discussion
Topic: Chip (ceramic) antenna superior to basic wifi dipole.
Replies: 5
Views: 5606

Re: Chip (ceramic) antenna superior to basic wifi dipole.

You may consider trying an official espressif development board to test pcb antenna performance which uses an espressif module that is mounted properly with the antenna sticking off the board.
by WiFive
Tue Sep 06, 2022 8:59 pm
Forum: General Discussion
Topic: Chip (ceramic) antenna superior to basic wifi dipole.
Replies: 5
Views: 5606

Re: Chip (ceramic) antenna superior to basic wifi dipole.

Can you give more details about the hardware used? There are a lot of third party modules and boards I wouldn't really trust the matching and impedance control and coupling of the pcb antenna.
by WiFive
Mon Aug 22, 2022 5:45 pm
Forum: ESP-IDF
Topic: [Solved] Disabling the Flash encryption
Replies: 8
Views: 5558

Re: Disabling the Flash encryption

Even number of bits. Numeric value will always be odd. Value 7 has 3 set bits but value 15 has 4 set bits.
by WiFive
Sun Aug 21, 2022 2:26 am
Forum: ESP-IDF
Topic: Why doesn't NVS Encryption use the standard Flash Encryption mechanism?
Replies: 10
Views: 10580

Re: Why doesn't NVS Encryption use the standard Flash Encryption mechanism?

Hello, Is it the case that you had "encrypted" flag set in front of "nvs" partition in your partition table? If yes, then please refer to fix and linked issues in the commit https://github.com/espressif/esp-idf/commit/e2fb582cf85cfb3cde0fb6c038fbf566b64adfcd. This may help you. Thanks. He wants the...
by WiFive
Sun Jul 24, 2022 7:12 am
Forum: General Discussion
Topic: Permanently mmap-ed partition?
Replies: 8
Views: 6767

Re: Permanently mmap-ed partition?

That's not a bug? As I said, the original ESP32 has 4MiB of address space for mmap()ping things, but as the rodata and non-iram instructions are also mapped using that space, you're left with less actual space free for user mappings. Esp32 is supposed to have 12mb of irom mapping plus 4mb of drom m...
by WiFive
Thu Jul 21, 2022 6:58 am
Forum: General Discussion
Topic: Permanently mmap-ed partition?
Replies: 8
Views: 6767

Re: Permanently mmap-ed partition?

Nope. The ESP32 has 4MiB of address space for this. Some of this space is used for mapping your application code into (size depends on your application; it's always smaller than the size of the application binary, though). The rest is available for you to mmap() into. Was this issue of 3mb limit ev...
by WiFive
Thu Jul 07, 2022 2:16 am
Forum: ESP-IDF
Topic: Why doesn't NVS Encryption use the standard Flash Encryption mechanism?
Replies: 10
Views: 10580

Re: Why doesn't NVS Encryption use the standard Flash Encryption mechanism?

Interesting question because flash encryption already uses a tweak key and operates on 32 byte blocks. Maybe so pre generated partitions are still possible within the flow of secure boot and flash encryption. Otherwise you would have to generate and use flash encryption keys off device or the bootlo...