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by kolban
Mon Oct 16, 2017 4:12 am
Forum: General Discussion
Topic: How to Visually Tell New from Old Silicon?
Replies: 16
Views: 4453

Re: How to Visually Tell New from Old Silicon?

Reading through exposed APIs, I seem to find an ESP-IDF API called "esp_chip_info" which now reports a variety of items include: * model * features * number of cores * revision I believe the revision fields is the silicon revision described in this post. This is a high level API and is pro...
by kolban
Sat Oct 14, 2017 8:30 pm
Forum: ESP32 SDK
Topic: Notice of upcoming change: ESP-IDF will assume 40MHz XTAL frequency by default
Replies: 1
Views: 644

Re: Notice of upcoming change: ESP-IDF will assume 40MHz XTAL frequency by default

A little bit more detail on this post. The SDKCONFIG entry is called "CONFIG_ESP32_XTAL_FREQ_SEL".

It can be set in "make menuconfig" under "Component Config" -> ESP32-Specific -> Main XTAL frequency.

Choices are:
40 MHZ
26 MHz
Autodetect
by kolban
Sat Oct 14, 2017 8:25 pm
Forum: ESP32 SDK
Topic: Communicating to ESP32 from PC Host - Designing for Production
Replies: 4
Views: 61

Re: Communicating to ESP32 from PC Host - Designing for Production

Depending on the nature of your application, a protocol such as MQTT over TCP/IP over WiFi might be suitable. One of the strengths of MQTT is that it is a queuing mechanism meaning that if there is a disruption in communication, messages need not be lost and can be locally queued for either pickup o...
by kolban
Sat Oct 14, 2017 3:31 pm
Forum: ESP32 SDK
Topic: Communicating to ESP32 from PC Host - Designing for Production
Replies: 4
Views: 61

Re: Communicating to ESP32 from PC Host - Designing for Production

From what I am hearing you say, BT, UART and WiFi all seem to be in play. Playing devils advocate here ... why not be generic and support all three? That way you will be super-loosely coupled between the PC and the ESP32 no matter what comes along. However if I were to choose just one, I'd likely su...
by kolban
Fri Oct 13, 2017 1:31 pm
Forum: ESP32 SDK
Topic: Guru Meditation Error - Device keeps rebooting
Replies: 3
Views: 58

Re: Guru Meditation Error - Device keeps rebooting

Consider pasting your application as a whole to pastebin and making a comment in the code about what you changed vs what worked before the change. Then place a link in the forum. Make sure that the comment in the code is as visible as possible. Try and make it ridiculously easy for the community to ...
by kolban
Fri Oct 13, 2017 1:28 pm
Forum: General Discussion
Topic: V3.0 comin soon or ??
Replies: 4
Views: 125

Re: V3.0 comin soon or ??

Is there a specific function or set of functions that you are especially going to leverage in 3.0 that aren't present in 2.1? I can see lots of new goodies but am curious if there is something specific you are looking for?
by kolban
Fri Oct 13, 2017 1:26 pm
Forum: ESP32 SDK
Topic: Missing declaration: esp_gattc_service_elem_t
Replies: 4
Views: 56

Re: Missing declaration: esp_gattc_service_elem_t

Release of the ESP-IDF can be downloaded here: https://github.com/espressif/esp-idf/releases At the time of writing, the latest release is v2.1. These are what I would call "stable" releases meaning that the code that comprises the release will not change over time. What works in the relea...
by kolban
Fri Oct 13, 2017 2:54 am
Forum: ESP32 SDK
Topic: gattc open issue
Replies: 10
Views: 1129

Re: gattc open issue

Unfortunately that's too much source code for me to pour over :-( Ive been tinkering with some BLE C++ classes and about 3 weeks ago the ESP-IDF APIs changed in the pre3.0 master on Github. What we need to remember is that there are releases of ESP-IDF and pre-releases. If we stick to releases, obvi...
by kolban
Mon Oct 09, 2017 5:05 am
Forum: General Discussion
Topic: [SOLVED] Keep getting TG0WDT_SYS_RESET
Replies: 2
Views: 70

Re: [SOLVED] Keep getting TG0WDT_SYS_RESET

Thanks for posting your resolution. I think that is a great technique to add to our box of "mystery resolutions". The one I commonly use is deleting the "build" directory within the project.
by kolban
Sun Oct 08, 2017 11:33 pm
Forum: General Discussion
Topic: Problems after updating to latest master (reproduced in IDF example code)
Replies: 31
Views: 602

Re: Problems after updating to latest master (reproduced in IDF example code)

As a data point, I've been running the latest ESP-IDF with the latest toolchain and been "ok". I have all kinds of boards including the Sparkfun. I ran into a problem with the latest toolchain and C++ classes but that is a very different story. My development environment is Ubuntu Linux. I...

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