Lup Yuen Lee 李立源 @lupyuen@qoto.org

#RaspberryPi HAT that lets you develop Edge #AI Camera applications in minutes

https://www.crowdsupply.com/xalogic/k210-ai-accelerator

Maybe #BL602 is stuck forever handling #LoRa Packet Received Interrupts? 🤔 ... Let's suppress GPIO Interrupts after handling the first 5 interrupts

https://github.com/lupyuen/bl_iot_sdk/blob/lorarecv/customer_app/sdk_app_lora/sdk_app_lora/sx1276-board.c#L402-L438

When #WisBlock transmits #LoRa Packets ... Our #BL602 LoRa Receiver hangs! ... Let's find out why 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/lorarecv/customer_app/sdk_app_lora/sdk_app_lora/demo.c

#RustLang totally_safe_transmute, line-by-line

https://blog.yossarian.net/2021/03/16/totally_safe_transmute-line-by-line

#Ransomware interview with REvil's Unknown

https://therecord.media/i-scrounged-through-the-trash-heaps-now-im-a-millionaire-an-interview-with-revils-unknown/

Receiving Video Directly from a SpaceX Falcon 9 Rocket with #SDR

https://www.rtl-sdr.com/receiving-video-directly-from-a-spacex-falcon-9-rocket-scott-manley-video/

Following the ‘Superpower’ Promise of eBPF

https://thenewstack.io/liz-rice-following-the-superpower-promise-of-ebpf/

Futurama's Bender Might Be Stronger Than Marvel's Vision

https://www.cbr.com/futurama-bender-could-beat-vision/

#WisBlock #LoRa Transmitter ... Sniffed by Airspy R2 SDR ... Watch the distinctive LoRa Chirp (red spike)

https://youtu.be/USqStub3KC0

More about Named Data Networking (NDN)...

https://named-data.net/project/

Interesting suggestion for upcoming #LoRa Devices by @PINE64 ... Should they run on Named Data Networking (NDN) over LoRa ... Instead of LoRaWAN? 🤔

https://github.com/named-data/NDN-packet-spec/issues/4

Flashed the #LoRa Transmitter to @RAKwireless #WisBlock ... This Arduino program transmits "Hello" in a LoRa Packet every 5 seconds

https://github.com/lupyuen/wisblock-lora-transmitter/blob/main/src/main.cpp#L94-L128

How to Be a Good #OpenSource Project Owner

https://www.freecodecamp.org/news/ultimate-owners-guide-to-open-source/

Let's test whether #LoRa SX1276 triggers GPIO Interrupts correctly on #BL602 ... When it receives a LoRa Packet ... The Interrupt Counters shall tell us

https://github.com/lupyuen/bl_iot_sdk/blob/lorarecv/customer_app/sdk_app_lora/sdk_app_lora/sx1276-board.c#L399-L428

My bad ... #BL602 High Level Trigger Interrupt = 高电平触发中断 = Trigger Interrupt on Logic High ... Nothing to do with priority 🤔

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/zh_CN

Maybe #BL602 High Level Trigger Interrupt = High Priority Interrupt = Sync Interrupt? 🤔 ... Lemme check the original Chinese Reference Manual

https://github.com/bouffalolab/bl_docs/tree/main/BL602_RM/en

#BL602 GPIO Interrupts: Should we use Sync or Async Interrupts for #LoRa? 🤔 ... BL602 IoT SDK uses Async Interrupts to handle GPIO Buttons ... Let's do the same for LoRa

https://github.com/bouffalolab/bl_iot_sdk/blob/master/components/hal_drv/bl602_hal/hal_button.c#L270-L317

Update Google #Chrome now ... Use-after-free #vulnerability CVE-2021-21193

https://www.kaspersky.com/blog/google-chrome-cve-2021-21193/39013/

Sparkfun Thing Plus – Quicklogic EOS S3 Arm eFPGA board

https://www.cnx-software.com/2021/03/16/sparkfun-thing-plus-quicklogic-eos-s3-arm-efpga-board-launched-in-crowd-supply/

Half of the US Is Now Considering Right to Repair Laws

https://www.vice.com/en/article/z3vavw/half-the-country-is-now-considering-right-to-repair-laws