Lup Yuen Lee 李立源 @lupyuen@qoto.org

#WisGate D4H comes with open-source #ChirpStack #LoRaWAN stack ... Preinstalled in the microSD card, ready for web and ssh access

https://lupyuen.github.io/articles/wisgate?3

#WisGate D4H #LoRaWAN Gateway is essentially a Raspberry Pi in a sturdy IP30 box

https://lupyuen.github.io/articles/wisgate?2

Everything about #RAKwireless
RAK7248 #WisGate Developer D4H #LoRaWAN Gateway ... Shall be explained here

https://lupyuen.github.io/articles/wisgate?1

Taking a short BL602 break ... To write about everything I've done with #RAKwireless #WisGate

https://docs.rakwireless.com/Product-Categories/WisGate/RAK7244C/Quickstart/

"How #Linux Works" ... 3rd Edition is out

https://nostarch.com/howlinuxworks3

Microcontroller Shortages: "What's up with NXP?"

https://www.reddit.com/r/embedded/comments/n0euc3/whats_up_with_nxp/?utm_medium=android_app&utm_source=share

#WordPress 5.7 + PHP 8: XML External Entity #Vulnerability

https://blog.sonarsource.com/wordpress-xxe-security-vulnerability

For Reference: Here's how I connected #PineCone #RISCV #BL602 @PINE64 to Pine64 RFM90 #LoRa Module (SX1262)

https://github.com/lupyuen/bl_iot_sdk/tree/master/components/3rdparty/lora-sx1262#connect-bl602-to-sx1262

But wait: Will #LoRaWAN allow replayed "Join Network" Requests? 😲 Nope it doesn't! #WisGate #ChirpStack will reject Replayed Requests because the Nonce needs to be unique ... Here's how we find Nonce Errors in RAKwireless WisGate

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#message-integrity-code-errors

Let's copy the Join #LoRaWAN Network Request generated by #BL602 ... And retransmit with #WisBlock ... Surprise: the Join Request succeeds! 😲 Which proves the Nonce and Message Integrity Code are OK ... Probably the BL602 Power Amplifier setting is wrong 🤔

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#output-log

#BL602 vs #WisBlock: Join #LoRaWAN Network Request ... Let's check the Nonce and Message Integrity Code ... Wonder if we can retransmit the BL602 packet from WisBlock 🤔

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#output-log

#LoRaWAN Packet: #BL602 vs #WisBlock ... Seems BL602 is transmitting at Lower Power than WisBlock ... Let's check the Power Amplifier settings 🤔

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#output-log

Here are the #LoRaWAN Packets transmitted by RAKwireless #WisBlock ... Captured by Airspy SDR and CubicSDR

https://youtu.be/xdyi6XCo8Z8

#LoRaWAN "Join Network" Packet transmitted by #WisBlock ... Looks similar to the one transmitted by BL602 ... Nonce and Message Integrity Code will differ of course

https://github.com/lupyuen/wisblock-lorawan/blob/master/README.md#output-log

Here's the "Join Network" #LoRaWAN Packet transmitted by #BL602 ... Does this look right? 🤔 Let's compare with WisBlock

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#output-log

How to Build a Custom Test Harness in #RustLang

https://www.fluvio.io/blog/2021/04/rust-custom-test-harness/

Low Cost #LoRaWan Field Tester

https://www.disk91.com/2021/technology/lora/low-cost-lorawan-field-tester/

Here's the #BL602 "Join Network" #LoRa Chirp ... Recorded by Airspy SDR with CubicSDR

https://youtu.be/7a4rfaI_zV4

Airspy SDR verifies that #BL602 is indeed transmitting the Join #LoRaWAN Network packet ... Maybe it contains garbage 🤔

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#output-log