OT: Getting Started with (Apache) NuttX RTOS - Part 1
Hi NuttXers, I published an article in the EmbeddedRelated about NuttX: https://www.embeddedrelated.com/showarticle/1524.php BR, Alan
Re: Mailing List
@Brennan, thanks for catching that! Nathan On Thu, Jun 8, 2023 at 11:44 PM Brennan Ashton wrote: > Email aggressively remove the sender from the reply list when sent to a > list so they likely did not get this email. I was doing the same thing a > couple weeks ago Added them to this one. > > Sharwin Patil hopefully you get this response from Nathan. > > --Brennan > > On Thu, Jun 8, 2023, 6:28 PM Nathan Hartman > wrote: > > > On Thu, Jun 8, 2023 at 7:01 PM Sharwin Patil > > wrote: > > > > > Hello, > > > > > > I am a developer using NuttX and would like to be added to the mailing > > list > > > for NuttX development. > > > > > > Thanks! > > > Sharwin Patil > > > GreenSight > > > > > > > Great to have you! To subscribe, send an email to: > > dev-subscr...@nuttx.apache.org. > > > > Youll get a confirmation email; once you confirm by replying to that, > > you'll be on the mailing list. > > > > Similarly, if you ever wish to unsubscribe, just send an email to: > > dev-unsubscr...@nuttx.apache.org. > > > > We should probably update the NuttX website to document this process more > > clearly. :-) > > > > Hope this helps, > > Nathan > > >
Article: NuttX for PinePhone: Feature Phone UI in LVGL, Zig and WebAssembly
We have created an LVGL App that runs in a Web Browser and on NuttX for PinePhone… - We compiled LVGL Library from C to WebAssembly with Zig Compiler - We wrote our LVGL App in the Zig Programming Language (instead of C) - Exact same code runs in a Web Browser and on NuttX for PinePhone Which is super helpful for prototyping LVGL Apps! Check out the details in this article: https://lupyuen.codeberg.page/articles/lvgl4.html Lup
Re: Article: NuttX for PinePhone: Feature Phone UI in LVGL, Zig and WebAssembly
On Sat, Jun 10, 2023 at 2:32 AM Lee, Lup Yuen wrote: > We have created an LVGL App that runs in a Web Browser and on NuttX for > PinePhone… > - We compiled LVGL Library from C to WebAssembly with Zig Compiler > - We wrote our LVGL App in the Zig Programming Language (instead of C) > - Exact same code runs in a Web Browser and on NuttX for PinePhone > Which is super helpful for prototyping LVGL Apps! Check out the details in > this article: > https://lupyuen.codeberg.page/articles/lvgl4.html AMAZING! CONGRATZ LUP!! :-) -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
Re: qencoder / long / float / double / maximum values
On Fri, Jun 9, 2023 at 7:53 AM raiden00pl wrote: > The index signal (Z index) should be used to reset the encoder position. > You can miss an encoder step for various reasons, and without periodically > checking the absolute position (index pin), you will accumulate errors. > Then, if you set the maximum count of an encoder timer to encoder > resolution, the values [0, encoder_resolution] map to the position of the > motor rotor. > Your app should be responsible for handling zero position crossing and any > calculation regarding the distance traveled by the rotor. > > There are ioctls to handle this (QEIOC_SETPOSMAX, QEIOC_SETINDEX) but ESP32 > doesn't support them. Thanks Raiden! Can you hint a complete implementation that I can base on the ESP32 work? :-) -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
Re: qencoder / long / float / double / maximum values
On Fri, Jun 9, 2023 at 3:24 AM Nathan Hartman wrote: > I know it is sometimes unpopular to suggest adding more Kconfigs but maybe > this is something that should be configurable, allowing developers to > choose if they need a 64-bit count for range or a 32- (or even 16-) bit > count for efficiency. The needed speed and counter size really depends on > how the application is going to use the qencoder. I am wondering on something more universal than #ifdef CONFIG and wrapping the whole lines of duplicated code.. Maybe a void pointer that would be then casted to a type based on a CONFIG? Any hints welcome :-) -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
