Lup Yuen Lee 李立源 @lupyuen@qoto.org

CH583 #RISCV microcontroller supports Bluetooth 5.3 LE

https://www.cnx-software.com/2021/12/30/ch583-risc-v-microcontroller-supports-bluetooth-5-3-le/

Louis Wain: The artist who changed how we think about Cats

https://www.bbc.com/news/uk-england-london-59518847

"What Ever Happened to Flickr?"

https://www.techspot.com/article/2384-flickr/

How to inspect a #NuttX Stack Trace 👍

https://gist.github.com/lupyuen/ccfd90125f9a180b4cfb459e8a57b323

We handle #LoRaWAN Events in our #NuttX App ... With this Event Loop

https://lupyuen.github.io/articles/sx1262?91#event-loop

"#PineTime: Smartwatch That Respects Your Data"

https://youtu.be/z6rQ-clATfA

Implementing Spinlock for #RISCV OS in #RustLang

https://vmm.dev/en/rust/spinlock.md

"$5 dock turns the $17 Sipeed Lichee RV into a fully functional #RISCV computer"

https://liliputing.com/2021/12/this-5-dock-turns-the-17-sipeed-lichee-rv-into-a-fully-functional-risc-v-computer.html

"Discovery kits for a complete beginner to #Embedded?"

https://www.reddit.com/r/embedded/comments/rqyjqc/what_are_some_good_discovery_kits_for_a_complete/?utm_medium=android_app&utm_source=share

Designing a CNC Motherboard (ESP32)

https://curiousmotor.com/2021/12/27/designing-the-onyx-v1-0-motherboard/

This Week in #RustLang

https://this-week-in-rust.org/blog/2021/12/29/this-week-in-rust-423/

#PinePhone Community Poll

https://www.pine64.org/2021/12/29/pinephone-community-poll/

How we handle SX1262 GPIO Interrupts in #NuttX OS ... With NimBLE Porting Layer

https://lupyuen.github.io/articles/sx1262?90#multithreading-with-nimble-porting-layer

We handle SX1262 GPIO Interrupts in #NuttX with a Background Thread ... That inserts into an Event Queue

https://lupyuen.github.io/articles/sx1262?89#start-dio1-thread

"Amazon’s Alexa assistant told a child to do a potentially lethal challenge"

https://www.cnbc.com/2021/12/29/amazons-alexa-told-a-child-to-do-a-potentially-lethal-challenge.html

This Year in Embedded #RustLang 2021

https://blog.rust-embedded.org/this-year-in-embedded-rust-2021/

Here's why we need GPIO Interrupts Triggered on Rising Edge for #LoRa on #NuttX

https://lupyuen.github.io/articles/sx1262?88#initialise-gpio

Switching a #NuttX GPIO Interrupt Pin to Trigger On Rising Edge ... Crashes with an Assertion Failure ... I'll submit a NuttX Issue, meanwhile I have disabled the assertion

https://github.com/lupyuen/incubator-nuttx/blob/lorawan/drivers/ioexpander/gpio.c#L544-L547

NimBLE Porting Layer doesn't work for multiple Callout Timers on #NuttX OS, unless we loop the thread ... Will submit a Pull Request to Apache NimBLE 👍

https://github.com/lupyuen/nimble-porting-nuttx/blob/master/porting/npl/nuttx/src/os_callout.c#L35-L70