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by ESP_krzychb
Fri Jun 16, 2017 7:57 am
Forum: General Discussion
Topic: JTAG Hardware
Replies: 7
Views: 7496

Re: JTAG Hardware

Howdy Mr @kolban, Your ESP8266 and ESP32 books and videos are great! JTAG support is being revised now, so the instructions - see https://github.com/espressif/openocd-esp32/wiki/Work-in-progress-ESP32-dual-core-target. I have installed and using JTAG on WROVER following great tutorial by Matthias Je...
by ESP_krzychb
Thu Jun 15, 2017 8:47 pm
Forum: General Discussion
Topic: JTAG Hardware
Replies: 7
Views: 7496

Re: JTAG Hardware

Can anyone recommend a good debugger, besides the two already mentioned? Do you happen to have or consider buying a WROVER development board - http://esp-idf.readthedocs.io/en/latest/hw-reference/modules-and-boards.html#esp32-wrover-kit-v1-esp32-devkitj-v1 ? WROVER has JTAG interface build in. It c...
by ESP_krzychb
Wed Jun 14, 2017 9:08 am
Forum: Hardware
Topic: RTC I2C Controller Pins
Replies: 1
Views: 1978

Re: RTC I2C Controller Pins

@q2222ch,

Well spotted!

Here is correction I confirmed with Espressif's documentation team:
rtcio_sar_i2c_io_reg correction.png
rtcio_sar_i2c_io_reg correction.png (209.4 KiB) Viewed 1936 times
by ESP_krzychb
Mon Jun 12, 2017 5:28 pm
Forum: Showcase
Topic: ESP32 ePaper display library
Replies: 5
Views: 15486

Re: ESP32 ePaper display library

Love the last picture with Flintstones and disconnected USB.
It is like a crowning final chord of a music masterpiece :D
by ESP_krzychb
Wed Jun 07, 2017 9:58 am
Forum: General Discussion
Topic: JTAG Problems
Replies: 6
Views: 3772

Re: JTAG Problems

@dspau1,

Thank you for sharing your findings and the other thread with solution.
Sysprogs did great job putting together LIMITATIONS OF THE ESP32 DEBUGGING
by ESP_krzychb
Tue Jun 06, 2017 6:00 pm
Forum: ESP32 Arduino
Topic: Second hand built prototype fails to boot load when first prototype worked.
Replies: 6
Views: 3059

Re: Second hand built prototype fails to boot load when first prototype worked.

This board features CH340 - https://www.olimex.com/Products/IoT/ESP32-EVB/open-source-hardware * On Windows 7 I am able to upload it at 921600. EDIT: 2000000 * The maximum upload baud rate I can get with Linux is 230400. At 921600 with Linux (Ubuntu 16.04 LTS) it fails as follows: esptool.py v2.0-be...
by ESP_krzychb
Tue Jun 06, 2017 1:16 pm
Forum: General Discussion
Topic: JTAG Problems
Replies: 6
Views: 3772

Re: JTAG Problems

While not familiar with VisualGDB, I would verify commands issued on start up of your debugging application to halt CPUs.

The command sequence I use is as follows:

Code: Select all

mon reset halt
hb app_main
x $pc=0x40000400
c
by ESP_krzychb
Sat Jun 03, 2017 4:08 pm
Forum: Hardware
Topic: WROVER and RGB LED
Replies: 21
Views: 10194

Re: WROVER and RGB LED

Hi @kolban, This is indeed bare minimum code :) I have tried it on two WROVER boards (V1 and V2) and the LED cycles colors in concert with output on the monitor. It looks like your board has some h/w issue. The only discrepancy is that the LED cycles color in different order on WROVER V1 and V2. V1:...
by ESP_krzychb
Sun May 28, 2017 7:13 pm
Forum: ESP32 IDF
Topic: What is the time to wakeup SoC from hibernation?
Replies: 2
Views: 2078

Re: What is the time to wakeup SoC from hibernation?

Good point :idea:
The use case is documented by @igrr in https://gist.github.com/igrr/54f7fbe051 ... d7fbecfeab.
Thanks, @WiFive!
by ESP_krzychb
Sun May 28, 2017 11:14 am
Forum: ESP32 IDF
Topic: What is the time to wakeup SoC from hibernation?
Replies: 2
Views: 2078

What is the time to wakeup SoC from hibernation?

Hello everybody :D Experimenting with ULP application discussed in https://esp32.com/viewtopic.php?f=13&t=1966#p9309 I have noted it takes about 100ms to wake up SoC from hibernation. 1. Is it reasonable time to wakeup the chip or maybe I configured something incorrectly? 2. What are the time consum...

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