Search found 101 matches

by krzychb
Thu Sep 21, 2017 9:53 pm
Forum: General Discussion
Topic: How to make ESP32 output 20MHZ's clock
Replies: 4
Views: 601

Re: How to make ESP32 output 20MHZ's clock

How to make ESP32 output 20MHZ's clock? And can you provide code? Below is an example how to generate 20MHz square wave at 50% duty on GPIO18. #include "driver/ledc.h" ledc_timer_config_t ledc_timer = { .speed_mode = LEDC_HIGH_SPEED_MODE, .timer_num = LEDC_TIMER_0, .bit_num = 2, .freq_hz ...
by krzychb
Wed Sep 20, 2017 4:48 pm
Forum: Showcase
Topic: Self balancing robot using ESP32
Replies: 1
Views: 79

Re: Self balancing robot using ESP32

Hi Dan,

Nice project and balancing performance!

I also like you made it working with no so much code.

Was the PID tuning difficult?

Is the code in javascript_espruino part of the final project?


Krzysztof
by krzychb
Wed Sep 20, 2017 1:23 pm
Forum: General Discussion
Topic: ask for help!my ESP-WROOM-32 Constantly restart like this
Replies: 2
Views: 50

Re: ask for help!my ESP-WROOM-32 Constantly restart like this

Hi yulihui404, The log is too generic to guess what the issue might be. It may either h/w of s/w issue depending on your h/w and s/w configuration. To help with troubleshooting you need to provide some details: 1. What is your development platform (Arduino, ESP-IDF, PlatformIO, other) and at what re...
by krzychb
Mon Sep 18, 2017 12:41 pm
Forum: General Discussion
Topic: Flashing ESP32 without buttons? (CTS RTS at uart dongle)
Replies: 5
Views: 108

Re: Flashing ESP32 without buttons? (CTS RTS at uart dongle)

Adding a 2.2uF capacitor between EN and GND resolved similar issue for me. https://github.com/espressif/esptool/is ... -257033484
by krzychb
Thu Sep 14, 2017 12:30 pm
Forum: Report Bugs
Topic: esp-idf-template-master sample program not working
Replies: 18
Views: 1406

Re: esp-idf-template-master sample program not working

Before mounting the capacitor I had to supply as much as 3.9 V from an adjustable power supply before the brownouts were gone. Adding a 470uF capacitor (did not have 560uF 6.3V solid polymer cap) gave me a barrier of 3.15 V before brownouts began to show up. This is especially a great thing if work...
by krzychb
Sat Sep 09, 2017 7:24 am
Forum: ESP32 SDK
Topic: And again someone who has problems with esp32 and sd cards
Replies: 21
Views: 941

Re: And again someone who has problems with esp32 and sd cards

Congratulations!
Nice "Manhattan style" wiring.
by krzychb
Sat Sep 02, 2017 5:58 pm
Forum: ESP32 SDK
Topic: GDB Issue, "Connection refused"
Replies: 5
Views: 258

Re: GDB Issue, "Connection refused"

I do not have 'interface/ftdi/esp32_devkitj_v1.cfg', does this perform JTAG over USB for the DevKitC? How might I get this file? No, this file is applicable for on board JTAG of ESP-WROVER-KIT . You can get it under https://github.com/espressif/openocd-esp32/blob/de4434713d78802b5ca21049454a8a908a6...
by krzychb
Wed Aug 30, 2017 6:35 am
Forum: ESP32 Arduino
Topic: ULP running in background
Replies: 1
Views: 95

Re: ULP running in background

Hi cruzxia, 1. If I setup the ULP to increment the timing variables, can I leave it running in an endless timing loop whilst the main processor is operating? Yes 2. Can I read the timing variables in the main processor while the ULP is running? Yes 3. How do I access the ULP variables from the main ...
by krzychb
Sun Aug 27, 2017 10:22 am
Forum: ESP32 SDK
Topic: GDB Issue, "Connection refused"
Replies: 5
Views: 258

Re: GDB Issue, "Connection refused"

Hey justinmreina, You have provided very well organized logs :D 1. What part of OpenOCD log is shown before you attempt to connect gdb? My looks as follows: krzysztof@TK-HP:~/esp/openocd-esp32$ src/openocd -s tcl -f interface/ftdi/esp32_devkitj_v1.cfg -f board/esp-wroom-32.cfg Open On-Chip Debugger ...
by krzychb
Sat Aug 26, 2017 8:06 am
Forum: ESP32 SDK
Topic: GDB Issue, "Connection refused"
Replies: 5
Views: 258

Re: GDB Issue, "Connection refused"

Hi justinmreina,

- What is shown on OpenOCD console?
- What is your OS?

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