Search found 469 matches

by mikemoy
Wed Jun 17, 2020 12:47 am
Forum: General Discussion
Topic: UART baud rate >460800 leads to partial garbage
Replies: 12
Views: 722

Re: UART baud rate >460800 leads to partial garbage

I am glad the solution was found. But next time you might want to mention that you messed with menuconfig.
It helps others to know that you were not running stock.
by mikemoy
Tue Jun 16, 2020 6:45 pm
Forum: Hardware
Topic: esp32-wroom-32 start on battery power on without requiring boot button
Replies: 7
Views: 372

Re: esp32-wroom-32 start on battery power on without requiring boot button

Check out section "2.1.2 Power-on Sequence and System Reset" of the esp32 hardware design guidelines.
https://www.espressif.com/sites/default ... nes_en.pdf
by mikemoy
Tue Jun 16, 2020 6:37 pm
Forum: Hardware
Topic: Custom PCB Not working
Replies: 7
Views: 554

Re: Custom PCB Not working

Without posting a schematic, its all guesswork.
by mikemoy
Thu Jun 11, 2020 3:42 am
Forum: General Discussion
Topic: gpio output
Replies: 2
Views: 276

Re: gpio output

LeonardRenner wrote:
Wed Jun 10, 2020 9:18 am
Hello,

What is the electronic wiring of an output?
Is it a Open collector or a totem-pole ?
or open emitter or other else.

can i use it as tristate ?
on, off, nothing ?

Thanks


That information is in the data sheet.
by mikemoy
Mon Jun 08, 2020 3:03 am
Forum: General Discussion
Topic: How To Learn Pure C with FreeRTOS on ESP32
Replies: 2
Views: 287

Re: How To Learn Pure C with FreeRTOS on ESP32

I have not bought this class, but he has a section on freeRTOS.
https://www.learnesp32.com/1_course-introduction
by mikemoy
Tue Jun 02, 2020 4:26 pm
Forum: General Discussion
Topic: ESP Ethernet custome boards going to fail in FCC
Replies: 6
Views: 479

Re: ESP Ethernet custome boards going to fail in FCC

yagnik, I know it way late for this but if you cant get it sorted out you may want to try this.
viewtopic.php?f=17&t=5479&start=30#p55405

You can dump U9 and its supported components, and make it much simpler.
by mikemoy
Mon Jun 01, 2020 1:32 am
Forum: ESP32 IDF
Topic: Does use of newlib nano format reduce stack usage?
Replies: 6
Views: 631

Re: Does use of newlib nano format reduce stack usage?

Not to be rude, but in the time it took you to write the post to ask the question, you could have already re-compiled it using nano to see for yourself.
by mikemoy
Tue May 05, 2020 5:58 pm
Forum: Hardware
Topic: Flashing DevKitC from external Serial Converter
Replies: 3
Views: 483

Re: Flashing DevKitC from external Serial Converter

How are you going to program your DevKitC with the ESP-PROG when the DevKitC has its own onboard programmer circuit?
You can't have 2 circuits trying to program the same device.
by mikemoy
Mon May 04, 2020 12:48 am
Forum: Hardware
Topic: Schematic Review (Seems like a problem to me!)
Replies: 5
Views: 665

Re: Schematic Review (Seems like a problem to me!)

I cannot. Routing the antenna takes real special care for impedance matching. This is not something one can just try, you MUST know what you are doing.

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