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by Deouss
Sat Mar 07, 2020 7:04 pm
Forum: Hardware
Topic: When we will see first ESP32-S2 boards ?
Replies: 2
Views: 3469

Re: When we will see first ESP32-S2 boards ?

Maybe the product picture is old but they all look like S2-beta models.
I expected some boards with camera and lcd fpc interface connectors.
Too bad the clock speeds didn't get bit higher too
by Deouss
Fri Mar 06, 2020 1:57 am
Forum: Hardware
Topic: When we will see first ESP32-S2 boards ?
Replies: 2
Views: 3469

When we will see first ESP32-S2 boards ?

The new chip is out and people are excited to see first dev boards and how they perform.
How soon you think we can see and buy the new S2 products?
by Deouss
Fri Feb 28, 2020 11:23 pm
Forum: ESP32 IDF
Topic: Question about Python version used in IDF
Replies: 2
Views: 642

Re: Question about Python version used in IDF

Thanks Krzysiek!
I didn't even notice Python 3 works with idf already)
I was able to flash esp8285 with idf.py installed from esp32 toolchain using old Python 2.7
by Deouss
Fri Feb 28, 2020 1:27 pm
Forum: ESP32 IDF
Topic: Question about Python version used in IDF
Replies: 2
Views: 642

Question about Python version used in IDF

So I updated recently some repositories - actually ESP8266_RTOS_SDK which got very nice CMake support and runs awesome. However I got many errors before I managed to update all required packages - errors were saying Python2.7 is end of life. All packages loaded fine but I had to explicitly run Pytho...
by Deouss
Thu Jan 30, 2020 4:15 pm
Forum: Hardware
Topic: Synchronizing SPIs
Replies: 5
Views: 835

Re: Synchronizing SPIs

SPI is a serial exchange protocol which means that each bit of a value being sent is presented to the MOSI (for a master - MISO for a slave device) pin in line with the SCK transitions. Therefore I have no idea how this relates to the gpio_matrix_out function. Yes but normally all bits go through o...
by Deouss
Thu Jan 30, 2020 4:02 pm
Forum: ESP32 IDF
Topic: Porting esptool.py to C
Replies: 7
Views: 3040

Re: Porting esptool.py to C

I tried once porting it to C# which would be much smoother but got stuck on SLIP protocol and stopped project.
by Deouss
Wed Jan 29, 2020 3:11 pm
Forum: Hardware
Topic: Synchronizing SPIs
Replies: 5
Views: 835

Re: Synchronizing SPIs

Thanks Susan. It is complicated, I'm trying to synchronize 2 or more devices that should read data at exact time.
I will look for more solutions I think.
Looks like gpio_matrix_out can map bits 4-7 of SPI data byte to individual pins which may help if it works
by Deouss
Tue Jan 28, 2020 3:50 pm
Forum: Hardware
Topic: Synchronizing SPIs
Replies: 5
Views: 835

Synchronizing SPIs

I would like to send signals from all SPIs at exact time so I know when all transmissions end at same time Are they synchronized by default or must be configured? I also noticed there are special functions for SPI pins as output: (gpio_sig_map.h) #define SPID4_IN_IDX 128 #define SPID4_OUT_IDX 128 #d...
by Deouss
Sun Jan 26, 2020 4:37 pm
Forum: ESP32 IDF
Topic: Standalone SDK
Replies: 5
Views: 715

Re: Standalone SDK

ESP_Sprite wrote: Actually, if I recall correctly, ESP8266 also uses a minimal RTOS under the hood (XTOS). Also, how would the things you mention not be possible with a RTOS?

So you are saying non-OS SDK for ESP8266 is actually a minimal RTOS ?
by Deouss
Sat Jan 25, 2020 3:07 pm
Forum: ESP32 IDF
Topic: Standalone SDK
Replies: 5
Views: 715

Re: Standalone SDK

I understand the re-architecturing problem for non-OS SDK, however looking at ESP8266 it is possible and works good. Intercommunication sometimes is not crucial in many performance projects and also having bare metal execution gives more management control over memory and the way the whole system be...

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