Search found 1683 matches

by kolban
Wed Sep 26, 2018 3:27 am
Forum: General Discussion
Topic: embedded database example?
Replies: 2
Views: 487

Re: embedded database example?

Maybe look at the following:

https://docs.espressif.com/projects/esp ... index.html

I'd suggest looking at the FAT Filesystem. Using this, you can create files that are backed by flash storage.
by kolban
Wed Sep 19, 2018 2:27 pm
Forum: General Discussion
Topic: How can I talk to the rom bootloader
Replies: 5
Views: 362

Re: How can I talk to the rom bootloader

Think of the ESP32 as having a ROM hosted application that gets control when you boot the ESP32 in "Download" mode. This application then listens on the serial port for incoming protocol which is described in the document you found. There is a rich set of commands. However, as you realize, the appli...
by kolban
Tue Sep 18, 2018 7:56 pm
Forum: General Discussion
Topic: Synchronizing access to file from different tasks
Replies: 10
Views: 653

Re: Synchronizing access to file from different tasks

For me, I would also explicitly use a mutex. The phrase "mutex" is a shortened form of "mutual exclusion" which seems to describe exactly the effect you are looking for. If task A is working on the file, task B should block until task A indicates it is no longer using the file.
by kolban
Tue Sep 18, 2018 7:53 pm
Forum: General Discussion
Topic: UART I/O issue
Replies: 4
Views: 420

Re: UART I/O issue

Would it be possible to post the complete fragment of logic showing all the UART processing including queue creation and other parts? Maybe post that as a GIT GIST fragment or some other link?
by kolban
Thu Sep 06, 2018 3:29 am
Forum: ESP32 IDF
Topic: The compilation is very slowly
Replies: 9
Views: 524

Re: The compilation is very slowly

Has anyone done a performance test of a build on Linux compared to a build on Windows 10 for the same application/project? If not, I'll be happy to run Windows 10 and Linux in two Virtual Box environments on Windows 10 with both configured to the same RAM and same processor count. Everything I have ...
by kolban
Sat Sep 01, 2018 4:06 am
Forum: General Discussion
Topic: Help converting unit8_t * param to const char * for use in cJSON
Replies: 5
Views: 434

Re: Help converting unit8_t * param to const char * for use in cJSON

What source statement is the failure occuring at? What is the error?
by kolban
Mon Aug 27, 2018 3:25 am
Forum: General Discussion
Topic: ESP-WROOM-32 FLASH programming from a host processor
Replies: 1
Views: 272

Re: ESP-WROOM-32 FLASH programming from a host processor

This is likely useful to you ...

https://github.com/espressif/esptool/wi ... l-Protocol

It shows the serial protocol that can used to drive an ESP32 to perform flash programming (amongst other things).
by kolban
Sun Aug 26, 2018 12:23 am
Forum: General Discussion
Topic: [Answered] Digital Signature with RSASSA-PKCS1-v1_5 using SHA-256
Replies: 2
Views: 382

Re: Digital Signature with RSASSA-PKCS1-v1_5 using SHA-256

Howdy,
Have a look at the following ... this is sample code which uses RSASSA through mbedtls to generate GCP JWT tokens.

https://github.com/nkolban/esp32-snippe ... ud/GCP/JWT

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