Lup Yuen Lee 李立源 @lupyuen@qoto.org

Our #NuttX SX1262 Library correctly receives the #LoRa Message transmitted by #RAKwireless WisBlock! 🎉

https://gist.github.com/lupyuen/0d78b13871fca41ac6d812407890b29b

xkcd: Turing Complete

https://m.xkcd.com/2556/

Here's how we receive #LoRa Messages with our #NuttX SX1262 Library ... Eventually this will be triggered by GPIO Interrupt (instead of polling)

https://github.com/lupyuen/incubator-nuttx-apps/blob/sx1262/examples/sx1262_test/sx1262_test_main.c#L123-L262

Now our #NuttX SX1262 Library shall receive a #LoRa Message ... Transmitted by #RAKwireless WisBlock

https://github.com/lupyuen/wisblock-lora-transmitter

#LoRa Message transmitted by our #NuttX SX1262 Library ... Received OK by RAKwireless WisBlock! 🎉

https://gist.github.com/lupyuen/5fdede131ad0e327478994872f190668

Let's use #RAKwireless WisBlock to inspect the #LoRa Message transmitted by our #NuttX SX1262 Library

https://github.com/lupyuen/wisblock-lora-receiver

SDR shows the #LoRa Chirp transmitted by our #NuttX SX1262 Library 🎉 ... Let's inspect the message with a LoRa Receiver

https://gist.github.com/lupyuen/5fdede131ad0e327478994872f190668

Our #NuttX SX1262 Library transmits a #LoRa Message ... We sniff the message with Airspy R2 SDR

https://github.com/lupyuen/lora-sx1262/tree/nuttx

https://airspy.com/airspy-r2/

Now we transmit a #LoRa Message with our #NuttX SX1262 Library

https://github.com/lupyuen/incubator-nuttx-apps/blob/sx1262/examples/sx1262_test/sx1262_test_main.c#L237-L253

Yep our #NuttX SX1262 Library reads the SX1262 Registers correctly! 🎉

https://gist.github.com/lupyuen/1e732f5b1e0e4a80d1eb351ab3aadede

Let's read some SX1262 Registers ... With our SX1262 Library for #NuttX OS

https://github.com/lupyuen/incubator-nuttx-apps/blob/sx1262/examples/sx1262_test/sx1262_test_main.c#L155-L171

Our #NuttX SX1262 Library calls the SPI Test Driver to transfer data over SPI

https://github.com/lupyuen/lora-sx1262/blob/nuttx/src/sx126x-nuttx.c#L677-L703

Here's how we init the SPI Bus and SPI Chip Select (GPIO Output) ... In our #NuttX SX1262 Library

https://github.com/lupyuen/lora-sx1262/blob/nuttx/src/sx126x-nuttx.c#L663-L675

We take this #LoRa SX1262 Driver for Linux and BL602 IoT SDK ... And tweak it for #NuttX OS

https://github.com/lupyuen/lora-sx1262/tree/nuttx

#LoRa SDR Testing ... With #PineDio Stack BL604 @PINE64

https://lupyuen.github.io/articles/lorawan2

Let's port to Apache #NuttX OS the driver for Semtech SX1262 #LoRa Transceiver

https://github.com/lupyuen/lora-sx1262/tree/nuttx

Our SX1262 Library for #NuttX is empty right now ... But we'll fill in the SX1262 code real soon!

https://github.com/lupyuen/incubator-nuttx/blob/newlibrary/libs/libsx1262/lib_misc.c

https://github.com/lupyuen/incubator-nuttx-apps/blob/newlibrary/examples/sx1262_test/sx1262_test_main.c

Also add our (empty) SX1262 Library to the #NuttX Makefiles: FlatLibs.mk, KernelLibs.mk, ProtectedLibs.mk, LibTargets.mk

https://github.com/lupyuen/incubator-nuttx/commit/b381a99e7512d09d74db4da982826b5e40b2606a

To include our SX1262 Library for the #NuttX Build ... We add it to Directories.mk

https://github.com/lupyuen/incubator-nuttx/commit/8bd31da9abccbcfdd1b9b1ccfd22bd41803ac7f8

Our (empty) SX1262 Library appears in #NuttX Menuconfig

https://github.com/lupyuen/incubator-nuttx/tree/newlibrary/libs/libsx1262