Search found 951 matches

by kolban
Wed Sep 20, 2017 3:47 am
Forum: General Discussion
Topic: Workflow tip: When to delete <project>/build
Replies: 1
Views: 10

Workflow tip: When to delete <project>/build

From experimentation, it seems that we are ok to delete the <project>/build directory as it will get rebuilt when we next perform a new compilation. The question then becomes "is it necessary and if yes, under what circumstances?". These are my empirical experiences: 1. When ever I install...
by kolban
Wed Sep 20, 2017 1:59 am
Forum: ESP32 SDK
Topic: LWIP- mulitple client example
Replies: 6
Views: 1290

Re: LWIP- mulitple client example

The good news about the ESP-IDF sockets implementation is that is appears pretty faithful to "normal" sockets so any/all recipes that you find on the Internet relating to sockets should work just fine in the ESP-IDF environment. If a peer to the ESP32 disconnects/closes its connection, the...
by kolban
Wed Sep 20, 2017 1:55 am
Forum: General Discussion
Topic: Development Assistance with DevKitC
Replies: 2
Views: 26

Re: Development Assistance with DevKitC

I think there are many of us in the community who would either offer assistance for free or for a fee depending on description of your needs. Maybe if you could describe more about the nature of your requirements and your compensation schedule that would help a lot.
by kolban
Wed Sep 20, 2017 1:51 am
Forum: General Discussion
Topic: I2C breaks when initializing ESP32_LED_STRIP RMT
Replies: 1
Views: 15

Re: I2C breaks when initializing ESP32_LED_STRIP RMT

How many LEDs are you using and how are you powering them? Could the current draw from the LEDs be causing trouble at the other components? I believe a WS2812 can consume 60ma at full power.
by kolban
Mon Sep 18, 2017 2:02 pm
Forum: ESP32 SDK
Topic: mbedTLS server mode
Replies: 8
Views: 437

Re: mbedTLS server mode

I created an issue on Github relating to the puzzle I was having with mbedTLS ... the link is here: https://github.com/espressif/esp-idf/issues/1009 I am delighted to report that there were some awesome suggestions on what the cause may have been and they were bang on. In summary, it appears that th...
by kolban
Sun Sep 17, 2017 11:09 pm
Forum: ESP32 SDK
Topic: mbedTLS server mode
Replies: 8
Views: 437

Re: mbedTLS server mode

Howdy @BuddyCassino Oh my ... another SSL implementation. My thinking is that ESP-IDF supplies mbedTLS as a core TLS/SSL provider. The ESP-IDF then provides an OpenSSL API wrapper ... which I guess is because OpenSSL is a very popular API. If I understand correctly, BearSSL is yet *another* SSL impl...
by kolban
Sun Sep 17, 2017 2:54 am
Forum: General Discussion
Topic: flash-programming using rfc2217
Replies: 2
Views: 41

Re: flash-programming using rfc2217

Here is a link to the RFC2217 specification: https://www.rfc-editor.org/rfc/rfc2217.txt This is a quite old spec (nearly 20 years now). The high level appears that one can use a telnet client to connect to a telnet server that then drivers a UART/Serial port. For example, to drive an "old fashi...
by kolban
Sun Sep 17, 2017 1:39 am
Forum: ESP32 SDK
Topic: mbedTLS server mode
Replies: 8
Views: 437

Re: mbedTLS server mode

Did you ever get a resolution to this puzzle. I too have ended up at exactly the same place as you have using exactly the same mbedTLS sample application. I am at a loss to explain. Here is the ESP32 app I am using... https://pastebin.com/rRBsd9wx The symptoms are as you described. Premature EOF fol...
by kolban
Fri Sep 15, 2017 1:43 pm
Forum: General Discussion
Topic: wearleveling filesystem image uploading
Replies: 15
Views: 1185

Re: wearleveling filesystem image uploading

Howdy,
Would it be possible for you to provide a link to the docs/reference for the recipe on using the pre-prepared SPIFFS file system?
by kolban
Thu Sep 14, 2017 11:25 pm
Forum: General Discussion
Topic: Need higher current power source
Replies: 3
Views: 83

Re: Need higher current power source

Howdy Lim, My electronics skills are poor but if I had that puzzle, here is how I'd approach it. If the fan draws 150ma, that is far more than you can source from a GPIO pin. I believe the limit is ~60ma. To solve that problem, I'd use a simple transistor. Connect the base of the transistor through ...

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