Search found 269 matches

by jcsbanks
Fri Sep 20, 2019 9:43 am
Forum: ESP32 IDF
Topic: PSRAM cache - how/when to update toolchain?
Replies: 0
Views: 63

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: ESP32 IDF
Topic: ESP-IDF v3.3 LTS clarification
Replies: 5
Views: 470

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: ESP32 IDF
Topic: ESP-IDF v3.3 LTS clarification
Replies: 5
Views: 470

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: ESP32 IDF
Topic: RMT - simplest receive example working, but idle_threshold problem
Replies: 6
Views: 1769

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: 201

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: ESP32 IDF
Topic: websocket-client message receive rate seemingly limited to 1 message per second.
Replies: 3
Views: 166

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: ESP32 IDF
Topic: Variables losing value
Replies: 1
Views: 97

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: 283

Re: Prevent Modification of NVS Data

You could encrypt it.
by jcsbanks
Fri Aug 16, 2019 8:30 am
Forum: ESP32 IDF
Topic: esp_timer_start_once - LoadProhibited on the second timer_armed call 1 in a million times
Replies: 2
Views: 236

Re: esp_timer_start_once - LoadProhibited on the second timer_armed call 1 in a million times

Thanks ESP_Angus. I had solved it by deleting and making a new timer instead of reusing it. Whilst this seems wasteful it meant that fewer critical sections and rechecks were needed in between timer alarm and start once and so far it is working well with heavy testing. Your input was useful to under...
by jcsbanks
Tue Aug 06, 2019 8:18 pm
Forum: ESP32 IDF
Topic: Persistent RAM disk
Replies: 10
Views: 590

Re: Persistent RAM disk

Bear in mind that writing to flash is slow, and FATFS is slow to read and write. PSRAM is mega fast in comparison.

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