Search found 382 matches

by Deouss
Sat May 25, 2019 4:19 pm
Forum: Hardware
Topic: Writing to GPIO_OUT_REG to only specific pins
Replies: 4
Views: 97

Re: Writing to GPIO_OUT_REG to only specific pins

Thanks. Well I use whole word only with needed bits so masking is not necessary.
Actually XOR operation might not be needed and data will be precalculated ready to write)
I want to use assembler instructions to repeat inline few times for speeding execution.
by Deouss
Fri May 24, 2019 2:10 pm
Forum: Hardware
Topic: Writing to GPIO_OUT_REG to only specific pins
Replies: 4
Views: 97

Re: Writing to GPIO_OUT_REG to only specific pins

So operations steps would be:

val => W1TS
val ~= val
val => W1TC

How that would look in asm ?
by Deouss
Fri May 24, 2019 1:40 pm
Forum: General Discussion
Topic: espressif's "Chip7 2-2-A" spotted in the wild
Replies: 37
Views: 4556

Re: espressif's "Chip7 2-2-A" spotted in the wild

May I ask - why not 2 cores?

:?:
by Deouss
Thu May 23, 2019 4:23 pm
Forum: Hardware
Topic: Writing to GPIO_OUT_REG to only specific pins
Replies: 4
Views: 97

Writing to GPIO_OUT_REG to only specific pins

Let's say I want to set 12 bits/pins simultaneously with specific values 0/1 to gpio output register but I do not want to change other bits - must be done with one 32bit word write and possibly one write instruction. Do I have to disable/enable bits with mask first? I don't want to change settings o...
by Deouss
Tue May 21, 2019 3:05 am
Forum: General Discussion
Topic: New Chip ESP32-S2
Replies: 12
Views: 1419

Re: New Chip ESP32-S2

I have a feeling there will be also same chip with 2 cores and maybe BT
LCD and camera support looks great - I hope it is not through I2S only.
Also if all that extra 128MB spiram is fully addressable in continuous blocks this is a huge hardware improvement.
by Deouss
Fri May 17, 2019 11:27 pm
Forum: General Discussion
Topic: Two Esp32 modules sharing same memory
Replies: 1
Views: 402

Two Esp32 modules sharing same memory

Is it possible to connect two separate Esp32 modules in a way that they could share and access same memory?
If so - how? And would it be easy to implement in SDK?
by Deouss
Thu May 09, 2019 3:25 pm
Forum: Showcase
Topic: I2S-parallel example: Drive a 64x32 display
Replies: 60
Views: 28472

Re: I2S-parallel example: Drive a 64x32 display

I wonder if the display process can be done only by CPU. I tried to drive it without I2S and it worked however my panel seems to have very strange behavior. There is something related to OE pin - must be triggered after every row or I am doing something wrong. They specify OE as active low so it act...
by Deouss
Thu May 02, 2019 11:55 am
Forum: ESP32 IDF
Topic: Setting up Visual Studio Code for ESP32 IDF
Replies: 14
Views: 13907

Re: Setting up Visual Studio Code for ESP32 IDF

Hey CalinB!
Thanks for your input! I will definitely look at those tools because VSC needs some extension that would make things easier for esp development. Intellisense should be more filtered just to the project objects.
Thanks again!
by Deouss
Wed May 01, 2019 10:25 pm
Forum: ESP32 IDF
Topic: Setting up Visual Studio Code for ESP32 IDF
Replies: 14
Views: 13907

Re: Setting up Visual Studio Code for ESP32 IDF

Updated links to newest version (as of right now) ;)
by Deouss
Tue Apr 30, 2019 3:16 am
Forum: Sample Code
Topic: Simple ULP Blink Example
Replies: 4
Views: 1240

Re: Simple ULP Blink Example

I managed to modify the blink code and compile with CMake and latest ESP-IDF )
It was necessary to upgrade Idf to the latest version - newest toolchain comes with full ULP support and even nice examples which is very nice. I used just VSC and CMake (Win10) - no need for PlatformIO ;)

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