Search found 301 matches

by jcsbanks
Tue Sep 24, 2019 7:59 pm
Forum: ESP-IDF
Topic: Wear levelling FATFS performance really slow even for reading?
Replies: 11
Views: 5694

Re: Wear levelling FATFS performance really slow even for reading?

I abandoned FATFS for reading large files and only write small difference files to it. Large files are stored in flash at OTA update time and read using mmap.
by jcsbanks
Fri Sep 20, 2019 9:43 am
Forum: ESP-IDF
Topic: PSRAM cache - how/when to update toolchain?
Replies: 8
Views: 2185

PSRAM cache - how/when to update toolchain?

https://github.com/espressif/esp-idf/issues/2892 Thought I might be better asking here my question about when/how to update the toolchain on Windows as it might be too basic for the GitHub issue. Any advice appreciated, was waiting for ESP IDF 3.3 to release our product, but I am confused what to do...
by jcsbanks
Mon Sep 09, 2019 8:46 am
Forum: ESP-IDF
Topic: ESP-IDF v3.3 LTS clarification
Replies: 7
Views: 2449

Re: ESP-IDF v3.3 LTS clarification

Thanks. Nothing critical for us between those commits. It is exciting to get product near release! Thanks for all the support, you guys rock :)
by jcsbanks
Sun Sep 08, 2019 6:30 pm
Forum: ESP-IDF
Topic: ESP-IDF v3.3 LTS clarification
Replies: 7
Views: 2449

Re: ESP-IDF v3.3 LTS clarification

On 5th September just after it was announced I updated and see this: $ git status On branch release/v3.3 Your branch is up to date with 'origin/release/v3.3'. The binary from the build shows: 13:39:25 Sep 5 2019 v3.3-rc-24-g148a26980 Is the -rc just an old tag? I did not notice this until I asked fo...
by jcsbanks
Fri Sep 06, 2019 6:14 pm
Forum: ESP-IDF
Topic: RMT - simplest receive example working, but idle_threshold problem
Replies: 13
Views: 5635

Re: RMT - simplest receive example working, but idle_threshold problem

Yes by having a task empty the buffer. RMT doesn't work with continuous pulse trains otherwise that I could work out.
by jcsbanks
Fri Aug 23, 2019 8:25 am
Forum: General Discussion
Topic: Key Value storage for more than 200 key's and names
Replies: 2
Views: 911

Re: Key Value storage for more than 200 key's and names

I have used nvs partitions of 56 and 60KB by altering the partition table. Capacity is in the thousands.
by jcsbanks
Fri Aug 23, 2019 8:12 am
Forum: ESP-IDF
Topic: websocket-client message receive rate seemingly limited to 1 message per second.
Replies: 3
Views: 1191

Re: websocket-client message receive rate seemingly limited to 1 message per second.

It looks like the vTaskDelays are explaining it? I did not know there were now idf examples but was able to send about 700 websockets per second from Thomas Barth's code without Nagle enabled and silly numbers with it.
by jcsbanks
Fri Aug 23, 2019 7:59 am
Forum: ESP-IDF
Topic: Variables losing value
Replies: 1
Views: 725

Re: Variables losing value

I am only looking on a phone, but the global is a pointer and the string it points to is probably going out of scope when you delete after getting the JSON. I would investigate the lifetime and location of the string, and who is supposed to allocate and free memory. https://github.com/DaveGamble/cJS...
by jcsbanks
Tue Aug 20, 2019 6:54 pm
Forum: General Discussion
Topic: Prevent Modification of NVS Data
Replies: 6
Views: 1653

Re: Prevent Modification of NVS Data

You could encrypt it.

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