Shorter Antenna for Higher Frequency ... Because Antenna Length is Wavelength divided by 4

https://www.thethingsnetwork.org/forum/t/antenna-length-for-868-and-433-mhz/5378

Now porting to #BL602: Driver for #Pine64 #LoRa Module (SX1262) ... Let's see how fast we can do this 🚀

https://github.com/lupyuen/bl_iot_sdk/tree/sx1262/components%2F3rdparty%2Flora-sx1262

#BL602 #LoRa SX1262 Driver ... A.k.a. #Pine64 LoRa Module ... Porting in progress

https://github.com/lupyuen/bl_iot_sdk/tree/sx1262/components/3rdparty/lora-sx1262

#BL602 #LoRa SX1262 Driver Builds OK! Now we implement the hardware abstraction stubs for BL602

https://github.com/lupyuen/bl_iot_sdk/tree/sx1262/components/3rdparty/lora-sx1262

We map these #LoRa SX1262 functions to the #BL602 Hardware Abstraction Layers: GPIO, SPI and Interrupts

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/src/sx126x-board.c

#BL602 #LoRa SX1262 Driver ... One last build error to be fixed ... G'nite!

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/src/sx126x-board.c

#LoRa SX1262: VREG vs DCC vs VCC ... Which shall I connect to power? 🤔

https://semtech.my.salesforce.com/sfc/p/#E0000000JelG/a/2R000000HT76/7Nka9W5WgugoZe.xwIHJy6ebj1hW8UJ.USO_Pt2CLLo

#LoRa SX1262 Power Amplifier baffles me ... Wish I was an Engineer 🤔

https://semtech.my.salesforce.com/sfc/p/#E0000000JelG/a/2R000000HT76/7Nka9W5WgugoZe.xwIHJy6ebj1hW8UJ.USO_Pt2CLLo

HopeRF RFM90 Datasheet explains VREG, DCC and VCC ... Challenging my Chinese skills

🤔

#LoRa SX1262 (top) vs SX1276 (bottom) ... Pinouts are similar

👍

Pine64 #LoRa SX1262 / RFM90 Module ... Connected to #PineCone #BL602 @ThePine64 ... Have some Wonderful Copenhagen Butter Cookies!

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/include/sx126x-board.h#L36-L63

PineCone #BL602 with #Pine64 #LoRa Module all boxed up ... Let's test this! 🙏

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/include/sx126x-board.h#L36-L63

Run our 3-In-1 #BL602 Script that Builds, Flashes and Runs BL602 Firmware ... Works exactly like 3-in-1 coffee mix 👍

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/customer_app/sdk_app_lorawan/run.sh

Let's test the SPI Connection between #BL602 and #LoRa SX1262 by reading some registers ... Yep the values are consistent ... Looks promising 🙏

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/customer_app/sdk_app_lorawan/sdk_app_lorawan/demo.c#L112-L128

Starting the #BL602 #LoRa SX1262 Driver ... Fails with an SPI Assertion Failure 😭 ... Let's find out what's wrong 🤔

(Yep Assertions are very helpful! 👍)

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/src/sx126x-board.c#L152-L158

Why did #BL602 #LoRa SX1262 Driver fail? Because BL602 SPI Port has not been initialised! 🙄 Let's fix this 👍

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/src/sx126x-board.c#L152-L158

Yep printf() is horrible for Embedded Programming ... But it was really helpful for verifying the init flow of our #BL602 #LoRa SX1262 Driver

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/src/sx126x-board.c#L168-L232

#BL602 #LoRa SX1262 Driver now transmits LoRa Packets without errors ... Let's sniff the airwaves with AirSpy SDR and verify 👃

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/customer_app/sdk_app_lorawan/sdk_app_lorawan/demo.c

@lupyuen that tiny cable connector is so cute

@deesapoetra Haha yep I call it the "stringy flappy thingy" 😂

https://lupyuen.github.io/articles/lora2#connect-wisblock

@lupyuen
Prof Lup, i prolly asked already but would you remind for old code you were moving it from apache newt to what?

And here what was source os of driver and whats dest os? Curious. And respecting You a lot for all You do.

Wish I could help You some with moving towards clang or something for ultra fast builds.

@lupyuen
Congratz.

@lupyuen
Is there option in configure on your new destination os to use clang instead of gcc? Is it hackable in that direction?
I wished i helped with it.

@lupyuen

That's very interesting!

I live in an almost total shadow of the cellular network where I live in the countryside. I have looked into building a receiver to bring the signal inside but have not got around to doing anything about it. Reading this gives me more of an impulse to look deeper into it again.

Thanks for your postings.