Lup Yuen Lee 李立源 @lupyuen@qoto.org

ESXi Arm Edition on the #Pine64 Quartz64 SBC

https://www.virtuallypotato.com/esxi-arm-on-quartz64/

Balloon Learning Environment: Emulating the real-world problem of controlling Stratospheric Balloons

https://ai.googleblog.com/2022/02/the-balloon-learning-environment.html?m=1

"#Sigfox takeover saddles UnaBiz with heavy baggage"

https://www.lightreading.com/iot/sigfox-takeover-saddles-unabiz-with-heavy-baggage/d/d-id/777022

Tracking all 23 GPIOs used by #PineDio Stack #BL604 can get challenging ... We might reuse GPIOs by mistake! 😱 Our #NuttX GPIO Expander shall validate the GPIOs at startup

https://github.com/lupyuen/bl602_expander#check-reused-gpios

As noted (eloquently) by Robert Lipe, attaching a #BL602 GPIO Interrupt Handler is hard (because our stars are misaligned) ... Let's fix this with our GPIO Expander for Apache #NuttX RTOS

https://github.com/lupyuen/bl602_expander#gpio-interrupts

"Xiaomi Cryptographically Signs Scooter Firmware"

https://hackaday.com/2022/04/24/xiaomi-cryptographically-signs-scooter-firmware-whats-next/

Handling GPIO Interrupts gets tricky on #PineDio Stack #BL604 ... All GPIO Interrupts are multiplexed into a single IRQ! Our #NuttX GPIO Expander can help

https://github.com/lupyuen/bl602_expander#gpio-interrupts

M5Stack ATOM Display Lite adds HDMI output to #ESP32 module

https://www.cnx-software.com/2022/04/25/m5stack-atom-display-lite-adds-hdmi-output-to-esp32-module/

(Singapore) "The recent spate of online scams shows that there are real risks of digitalising national identities and government services"

https://www.channelnewsasia.com/commentary/singpass-digital-identity-nric-cybersecurity-crimes-phishing-scam-hackers-steal-data-2638611?cid=internal_sharetool_androidphone_25042022_cna

"Selling my own GPL software"

https://raymii.org/s/blog/Existing_GPL_software_for_sale.html

"How macOS manages M1 CPU Cores" (Performance vs Efficiency Cores)

https://eclecticlight.co/2022/04/25/how-macos-manages-m1-cpu-cores/

BlackCat: "first-ever malware written in the #RustLang programming language that's known to be memory safe and offer improved performance"

https://thehackernews.com/2022/04/fbi-warns-of-blackcat-ransomware-that.html

Apache #NuttX RTOS lets us create I/O Expander Drivers that will handle many GPIOs (Input / Output / Interrupt) ... Perfect for #PineDio Stack #BL604!

https://github.com/lupyuen/bl602_expander#gpio-expander

All 23 GPIOs are fully wired up on #PineDio Stack #BL604! 😲 Let's simplify #NuttX and rename the GPIOs as "/dev/gpio0" to "/dev/gpio22" ... Easier for devs to create NuttX Drivers 👍

https://github.com/lupyuen/bl602_expander#bl602-evb-limitations

What happens when we try to support 23 GPIOs on #PineDio Stack #BL604? Yep the GPIO Names will look really messy on #NuttX RTOS 🤔

https://github.com/lupyuen/bl602_expander#bl602-evb-limitations

"Analysts Predict End is Near for Global Chip Shortage"

https://www.tomshardware.com/news/analyst-predicts-end-of-chip-shortage

#BL602 EVB on #NuttX supports one GPIO Input, one GPIO Output and one GPIO Interrupt ... And names them sequentially: "/dev/gpio0", "/dev/gpio1", "/dev/gpio2" ... Which gets super confusing because "/dev/gpio0" doesn't map to BL602 GPIO Pin 0 🤔

https://github.com/lupyuen/bl602_expander#bl602-evb-limitations

"Why Tech Platforms are facing rebellions" (Etsy)

https://www.channelnewsasia.com/business/bleed-us-dry-why-tech-platforms-are-facing-rebellions-2644096