Search found 513 matches

by loboris
Tue Dec 04, 2018 10:24 pm
Forum: ESP32 IDF
Topic: LEDC unstable frequency
Replies: 11
Views: 2935

Re: LEDC unstable frequency

This value can be set by set by ledc_timer_set() function (source).
clk_src parameter can be LEDC_APB_CLK or LEDC_REF_TICK
by loboris
Tue Dec 04, 2018 6:29 pm
Forum: ESP32 IDF
Topic: Delay booting
Replies: 3
Views: 1117

Re: Delay booting

Is it possible to add a delay to bootloader ? - feature ewquest :-) You can't do anything before the 2nd stage bootloader starts - untit then the code is executed from ROM. If the brownout feature would work this could be also a possibility - but I use WiFi and then it is not working. Brownout work...
by loboris
Mon Dec 03, 2018 3:30 pm
Forum: Hardware
Topic: 32.768kHz RTC Crystal recommendation
Replies: 5
Views: 1407

Re: 32.768kHz RTC Crystal recommendation

I'm using this one with 12pF capacitors on my custom boards with ESP32-WROVER and never had any issue.
by loboris
Mon Dec 03, 2018 3:25 pm
Forum: General Discussion
Topic: Is it possible to force using the internal oscillator instead of the external 32kHz crystal
Replies: 5
Views: 1226

Re: Is it possible to force using the internal oscillator instead of the external 32kHz crystal

If you set → Component config → ESP32-specific → RTC clock source (Internal 150kHz RC oscillator) in menuconfig, external crystal won't be used.
by loboris
Fri Nov 30, 2018 3:40 pm
Forum: General Discussion
Topic: Best way to get 16MB WROOM modules?
Replies: 9
Views: 2829

Re: Best way to get 16MB WROOM modules?

jcsbanks wrote:
Fri Nov 30, 2018 10:42 am
Analog Lamb didn't have ability to deliver quantity and the CE/FCC doesn't look convincing.

alb32-wrover doesn't have any certificate, plus GPIOs 16&17 are not connected (used for SPI-RAM) and that could be a problem if the board is designed for ESP32-WROOM and uses those pins.
by loboris
Tue Nov 27, 2018 9:12 am
Forum: General Discussion
Topic: New to ESP32. Which one should I buy for my specified needs?
Replies: 5
Views: 2090

Re: New to ESP32. Which one should I buy for my specified needs?

@RetroZvoc Maybe some of those RISC-V boards could be better choice for your needs. K210, dual-core RISC-V 64bit chip, used on them is only couple of months old and you may have some difficulties in setting the development environment, but it is very promissing. I've ordered couple of boards, and I'...
by loboris
Sat Nov 24, 2018 10:34 pm
Forum: ESP32 IDF
Topic: Crash
Replies: 5
Views: 1093

Re: Crash

Too bad there is no instruction to update the IDF. What kind of instructions would you like? The only thing you have to do is to execute: git pull git submodule update --init in esp-idf directory. If anythig goes wrong, just delete the whole esp-idf directory and do the fresh clone: git clone --rec...
by loboris
Sat Nov 24, 2018 5:57 pm
Forum: Hardware
Topic: ESP32 PCB Antenna Design
Replies: 9
Views: 4003

Re: ESP32 PCB Antenna Design

There is nothing special about PCB antenna design for ESP32. You can use any WiFi antenna design, including ones in the documents you mentioned.

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