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by ESP_Sprite
Fri Oct 11, 2019 11:01 am
Forum: Hardware
Topic: ESP32 LyraT v4.3 Aux input circuit is highly confusing and surely wrong
Replies: 10
Views: 458

Re: ESP32 LyraT v4.3 Aux input circuit is highly confusing and surely wrong

FWIW, they do agree that just knocking the caps off is probably the easiest solution for existing LyraT boards, seems the discussion is mostly if we can/need to find a better way for newly produced boards.
by ESP_Sprite
Thu Oct 10, 2019 4:18 am
Forum: ESP32 IDF
Topic: Reading nanosecond timing on GPIO (Neopixel)
Replies: 1
Views: 75

Re: Reading nanosecond timing on GPIO (Neopixel)

An alternative would be to read the stream using an I2S or SPI controller, but you need to oversample it and may have a hard time decoding the results... if you could use some hardware to somehow derive a clock pulse from the signal that has a flank in the middle of the WS2811 bit, you could effecti...
by ESP_Sprite
Thu Oct 10, 2019 3:07 am
Forum: Hardware
Topic: ESP32 LyraT v4.3 Aux input circuit is highly confusing and surely wrong
Replies: 10
Views: 458

Re: ESP32 LyraT v4.3 Aux input circuit is highly confusing and surely wrong

Nothing yet, still waiting for a hardware engineer to look into this.
by ESP_Sprite
Fri Oct 04, 2019 8:06 am
Forum: ESP32 IDF
Topic: PSRAM cache - how/when to update toolchain?
Replies: 2
Views: 201

Re: PSRAM cache - how/when to update toolchain?

We should start integrating this into mainline next week (it's a holiday in China now).
by ESP_Sprite
Fri Oct 04, 2019 7:57 am
Forum: Hardware
Topic: [solved] BOOT Switch (Boot Mode Selection) is it needed?
Replies: 2
Views: 312

Re: BOOT Switch (Boot Mode Selection) is it needed?

Normally, the reset and GPIO0 are handled by some smart circuitry that allows your PC to reset the ESP32 and put it in download mode. This circuitry, however, doesn't work in all cases (e.g. virtual machines have issues) so the buttons are a fallback option.
by ESP_Sprite
Mon Sep 30, 2019 7:17 am
Forum: ESP32 Arduino
Topic: I2S Pins
Replies: 2
Views: 161

Re: I2S Pins

DAC1/2 are the 2 8-bit DACs internal to the ESP32; if you want to get an analog output directly from the ESP32 you must use those two pins as the analog output pins. If you use an external DAC, you can use any available GPIO for any I2S signal.
by ESP_Sprite
Mon Sep 30, 2019 7:10 am
Forum: General Discussion
Topic: ESP32 OTA Update issue
Replies: 3
Views: 176

Re: ESP32 OTA Update issue

I may be wrong, but I don't think anyone is going to wade through that huge amount of code to see if you made a booboo anywhere. Suggest trying to reduce the code to the minimum that still shows the issue by slowly deleting functionality until it doesn't fail anymore.
by ESP_Sprite
Sun Sep 29, 2019 4:51 am
Forum: ESP32 IDF
Topic: How can I use FreeRTOS Socket API instead of LWIP?
Replies: 5
Views: 246

Re: How can I use FreeRTOS Socket API instead of LWIP?

Also, our LwIP implementation also doesn't schedule tasks if all they're doing is waiting for data.
by ESP_Sprite
Sun Sep 29, 2019 4:44 am
Forum: ESP32 Arduino
Topic: Spartan Edge Accelerator Board
Replies: 1
Views: 101

Re: Spartan Edge Accelerator Board

Sounds silly, especially since the ESP32 has a perfectly good Arduino environment.
by ESP_Sprite
Tue Sep 24, 2019 2:46 am
Forum: ESP32 Arduino
Topic: Issue running LoRa with dual cores
Replies: 5
Views: 231

Re: Issue running LoRa with dual cores

Hard to say without seeing the code. In general: Smells like a threading problem, where some functions (the SPI driver ones, maybe?) aren't re-entrant. Do you have the same issue when you use two threads, but on the same core and with the same priority?

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