Search found 17 matches

by philippe_44
Sat May 09, 2020 5:37 am
Forum: ESP32 IDF
Topic: RMT and infrared on IDF 3.3
Replies: 1
Views: 284

Re: RMT and infrared on IDF 3.3

Replying to my own question ... my bad (to some extend). I was reading the duration0/duration1 value before scaling to µs. So the different is not 7300 vs 9000, but more the fact that the margin should be set to 150µs rather than 20µs. I've tried with different remotes and got the same result ...
by philippe_44
Sat May 09, 2020 4:54 am
Forum: ESP32 IDF
Topic: RMT and infrared on IDF 3.3
Replies: 1
Views: 284

RMT and infrared on IDF 3.3

Hi - I guess I'm missing something very obvious but I can't get the RMT driver to work properly in IDF 3.3. I initially tried in my larger project (SW+HW) and as it was not detecting commands I moved to just the rmt_nec_tx_rx example and a WROVER on DevKitC and it still does not work - and it's driv...
by philippe_44
Thu Apr 30, 2020 6:37 am
Forum: Showcase
Topic: Full audio sub-system based on WROVER
Replies: 3
Views: 1195

Re: Full audio sub-system based on WROVER

chegewara wrote:
Thu Apr 30, 2020 6:09 am
This project looks awesome, thanks for sharing. I could buy you a beer or 2 even if i dont build it for myself.
Could you add license or tell us how it can be licensed?

It's free, all sources are available, except when not provided by expressif for a few of their libraries
by philippe_44
Thu Apr 30, 2020 5:41 am
Forum: Showcase
Topic: Full audio sub-system based on WROVER
Replies: 3
Views: 1195

Full audio sub-system based on WROVER

My WROVER-based project for a full audio multi-room system https://github.com/philippe44/SqueezeAMP - 2x20W class-D amp - Logitech Media Server, AirPlay,BT (sink & source) - SPDIF, Analogue-out - Battery or DC-powered (5-20V), recharge & maintain battery - Supports OLED display SSD1306,22,26,27 and ...
by philippe_44
Tue Feb 04, 2020 4:35 am
Forum: Hardware
Topic: (solved) failing to use external RAM
Replies: 7
Views: 850

Re: failing to use external RAM

Hi 1- In menuconfig, components, ESP32 specific, SPI RAM config, there you have an item (after you've enabled malloc() in SPIRAM) that sets the max that will *always* be allocated in IRAM first 2- No, malloc uses internal RAM if requested size is above the minimum set in 1-. Now if you only allocate...
by philippe_44
Mon Feb 03, 2020 9:15 am
Forum: Hardware
Topic: GPIO36/39 crosstalk (or still in sensor mode)
Replies: 4
Views: 716

Re: GPIO36/39 crosstalk (or still in sensor mode)

Hi - Thanks for your help This sounds like a frustrating problem. It doesn't match any known issue that I'm aware of. It is indeed :-) This makes it sound a bit like it might be an electrical issue, rather than anything in the digital logic domain. Is it possible it's actual electrical crosstalk? Ar...
by philippe_44
Sat Feb 01, 2020 8:26 pm
Forum: Hardware
Topic: GPIO36/39 crosstalk (or still in sensor mode)
Replies: 4
Views: 716

Re: GPIO36/39 crosstalk (or still in sensor mode)

The WIFI_PS_NONE removes the unsollicited interrupt that happen all the time otherwise. But it does not change the "crosstalk"
by philippe_44
Sat Feb 01, 2020 10:23 am
Forum: Hardware
Topic: (solved) failing to use external RAM
Replies: 7
Views: 850

Re: failing to use external RAM

I use extensively external RAM and there it should work pretty easily. You need to tweak the malloc parameters if you want malloc() to use it, potentially move some BSS to external RAM as well but all that is fairly transparent once set. Check as well the bus SPI size and speed (I use QIO and 80MHz ...
by philippe_44
Sat Feb 01, 2020 9:05 am
Forum: Hardware
Topic: GPIO36/39 crosstalk (or still in sensor mode)
Replies: 4
Views: 716

GPIO36/39 crosstalk (or still in sensor mode)

Hi - I have an issue with using GPIO 36&39 with is driving me nuts. I'm using multiple GPIO with interrupts for button. It's in a fairly large application and working fine. As I was a bit short on GPIOs, I added 36 & 39. I'm well aware they can only be inputs and they are also sensor vn/vp. Buttons ...
by philippe_44
Mon Nov 04, 2019 3:02 am
Forum: Hardware
Topic: WROVER UFL/IPEX connector vs Antenna PCB
Replies: 0
Views: 557

WROVER UFL/IPEX connector vs Antenna PCB

Hi - I'm a bit confused with these 2 options of the WROVER. I see from outisde of the shield and schematics that R14/R15 position sets the antenna selection to be either the UFL/IPEX or the PCB. But I assume that there is more than just R14/R15: the Pi matching filter (under the shield) is also diff...

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