Lup Yuen Lee 李立源

Testing our Driver on Stack BL604

github.com/lupyuen/bl_iot_sdk/

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Lup Yuen Lee 李立源

Yep the same Driver that we ported from Apache Mynewt OS to

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Stack BL604 has an onboard SX1262 transceiver

lupyuen.github.io/articles/pin

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Lup Yuen Lee 李立源

Here's how our SX1262 transceiver is connected to

lupyuen.github.io/articles/pin

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Lup Yuen Lee 李立源

SX1262 Pins are defined here

github.com/lupyuen/bl_iot_sdk/

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Lup Yuen Lee 李立源

Remember to deselect all other SPI Peripherals on Stack ... While testing SX1262

github.com/lupyuen/bl_iot_sdk/

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Lup Yuen Lee 李立源

Need to swap MISO and MOSI Pins due to a SPI quirk ... Also note the quirky SPI Polarity-Phase

github.com/lupyuen/bl_iot_sdk/

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Lup Yuen Lee 李立源

Boot our Firmware and enter these commands to: 1️⃣ Join the LoRaWAN Network 2️⃣ Transmit a LoRaWAN Data Packet

github.com/lupyuen/bl_iot_sdk/

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Lup Yuen Lee 李立源
Follow

Our Gateway (ChirpStack) accepts the Join Network Request from Stack ... And receives the Data Packet yay! 🎉

lupyuen.github.io/articles/lor

· · Tusky · 1 · 0 · 0
Lup Yuen Lee 李立源

Our ChirpStack Gateway shows the Data Packet received from Stack ... Yep packet contents are correct!

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Logic Analyser shows PineDio Stack talking to SX1262 over SPI

lupyuen.github.io/articles/pin

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Lup Yuen Lee 李立源

SDR Spectrum Analyser shows this beautiful Chirp transmitted by Stack SX1262 ... Looks OK but why are there "Fireflies"? 🤔

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Testing on Stack BL604 @PINE64 ... All shall be explained in this article

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Which @PINE64 Devices will talk to Stack BL604?

lupyuen.github.io/articles/lor

1
Lup Yuen Lee 李立源

How SX1262 Transceiver is wired up on Stack BL604

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Yep our Firmware for BL602 works OK on Stack BL604!

lupyuen.github.io/articles/lor

1
Lup Yuen Lee 李立源

Remember to deselect all other SPI Peripherals when testing SX1262 on Stack BL604

lupyuen.github.io/articles/lor

1
Lup Yuen Lee 李立源

We need to swap the SPI Pins and tweak the SPI Polarity-Phase for Stack

lupyuen.github.io/articles/lor

1
Lup Yuen Lee 李立源

Good to have a Software Defined Radio (like Airspy R2) ... When testing on prototype hardware (like Stack BL604)

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Running our Firmware on Stack BL604

lupyuen.github.io/articles/lor

1
Lup Yuen Lee 李立源

How we join a Network and transmit data on Stack BL604

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Checking ChirpStack Gateway ... For packets transmitted by Stack BL604

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Sniffing the SPI Bus on Stack BL604

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Sniffing Packets with a Software-Defined Radio

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

Why we need Security on Stack BL604

lupyuen.github.io/articles/lor

1+
Lup Yuen Lee 李立源

How we use a Cryptographic Co-Processor with

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

for Data and Voice Mesh Networks on Stack BL604

lupyuen.github.io/articles/lor

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Lup Yuen Lee 李立源

What's Next for on Stack BL604

lupyuen.github.io/articles/lor

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iced depresso
@lupyuen why do the keys need to be in magic spooky hardware space :blobfoxdisapprove:
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Lup Yuen Lee 李立源

@icedquinn Yeah sigh 🙄

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iced depresso
@lupyuen i talked about this once with someone who asked me about making secure phones for some hypothetical underground.

i shrugged like "you know there's nothing special about the military stuff right? you can make frequency hopping systems out of any computer controlled radio :cirno_doubt:"
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TikToc

@lupyuen -- How about not storing Security Keys on a public facing server?

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