Search found 425 matches

by Deouss
Fri Feb 28, 2020 1:27 pm
Forum: ESP-IDF
Topic: Question about Python version used in IDF
Replies: 2
Views: 4295

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: 6165

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: ESP-IDF
Topic: Porting esptool.py to C
Replies: 7
Views: 10738

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: 6165

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: 6165

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: ESP-IDF
Topic: Standalone SDK
Replies: 5
Views: 4954

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: ESP-IDF
Topic: Standalone SDK
Replies: 5
Views: 4954

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...
by Deouss
Fri Jan 24, 2020 2:25 pm
Forum: ESP-IDF
Topic: Standalone SDK
Replies: 5
Views: 4954

Standalone SDK

I know current IDF supports FreeRTOS but maybe in the future it would be also good to have a standalone SDK for ESP32?
Do you think it is possible and have you consider such development?

Thanks!
by Deouss
Sat Jan 11, 2020 10:00 pm
Forum: Hardware
Topic: ESP32 5GHz
Replies: 49
Views: 138908

Re: ESP32 5GHz

ESP_Sprite wrote:
Mon Jan 06, 2020 10:25 am
Nothing I can make public that's more than 'we're working on it', sorry.
Can you give us some more details? :?:
by Deouss
Sat Dec 28, 2019 2:56 am
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 426
Views: 783660

Re: What would you like to see in The Next Chip?

I would still consider Risc-V /64bit - why not - architecture is perfect for ESP64 )
Going with ARM increases costs unfortunately ...