Let's make a Linux Driver for #PineDio USB #LoRa Adapter @PINE64

https://github.com/lupyuen/pinedio_usb_sx126x_driver

We'll build our #PineDio USB #LoRa Driver based on Semtech's Reference Driver for SX1262

https://github.com/Lora-net/sx126x_driver

Took me a while to figure out how to build the CH341 SPI Driver with DKMS and Kernel Headers ... Yep it works on Pinebook Pro Manjaro! 🎉

https://github.com/lupyuen/pinedio_usb_sx126x_driver

Here's how we open the CH341 SPI Port ... And transfer SPI data to #LoRa SX1262

https://github.com/lupyuen/pinedio_usb_sx126x_driver/blob/master/src/main.c

Semtech's #LoRa SX1262 Driver requires an SPI HAL ... Here's how we do it with CH341 SPI

https://github.com/lupyuen/pinedio_usb_sx126x_driver/blob/master/src/main.c#L101-L138

Let's do a simple test of our #PineDio USB Driver ... Read some SX1262 Registers over SPI

https://github.com/lupyuen/pinedio_usb_sx126x_driver/blob/master/src/main.c#L31-L46

Yep our #PineDio USB Driver returns some Register Values for #LoRa SX1262! 🎉

https://github.com/lupyuen/pinedio_usb_sx126x_driver#output-log

Our #PineDio USB Driver returns the exact same Register Values ... As BL602 with LoRa #SX1262! 🎉

https://lupyuen.github.io/articles/lorawan#troubleshoot-lorawan

Oops just discovered that the new Semtech Reference Driver doesn't support LoRaWAN ... So we switched to the older #LoRa SX1262 Driver ... Exact same driver used by BL602!

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

Let's transmit a #LoRa Message on #PineDio USB Dongle with these settings ... Connected to Pinebook Pro

https://github.com/lupyuen/lora-sx1262/blob/master/src/main.c

#PineDio USB Dongle @PINE64 transmits a #LoRa Packet ... Which appears as a LoRa Chirp on Airspy SDR! 🎉

https://github.com/lupyuen/lora-sx1262/blob/master/src/main.c

I haven't figured how to control GPIO with CH341, so here are 2 Quick Hacks: 1️⃣ Need to reset #PineDio Dongle? Just unplug it ... 2️⃣ Checking for busy state? Just wait 10 millisecs between SX1262 requests

https://github.com/lupyuen/lora-sx1262/blob/master/src/sx126x-linux.c#L148-L179

#PineDio USB Dongle sends #LoRa Packet to RAKwireless WisBlock ... But received packet is consistently garbled ... As reported by @JF 🤔

https://github.com/lupyuen/lora-sx1262#wisblock-receiver-log

But #LoRa Messages sent by #PineDio Stack BL604 to RAKwireless WisBlock are not garbled ... Even though PineDio Stack and PineDio Dongle are running the same SX1262 Driver Code! 🤔

https://lupyuen.github.io/articles/lorawan#configure-lora-transceiver

#PineDio Dongle sends a 64-byte #LoRa Packet ... But the 64-byte Packet doesn't appear in the dmesg Log for CH341 SPI Driver 🤔

https://github.com/lupyuen/lora-sx1262#pinedio-usb-dmesg-log

Aha! When #PineDio Dongle sends a 29-byte #LoRa Packet to RAKwireless WisBlock ... It's received OK! Anything more will be garbled 🤔

https://github.com/lupyuen/lora-sx1262#wisblock-receiver-log

CH341 doesn't seem to support 32-byte SPI Transfers ... Hope this fixes @JF's #PineDio #LoRa USB Dongle! 👍

https://github.com/lupyuen/lora-sx1262/blob/master/src/sx126x-linux.c#L665-L687

#PineDio USB Dongle shall now receive a #LoRa Message ... From RAKwireless WisBlock

https://github.com/lupyuen/lora-sx1262/blob/master/src/main.c#L74-L119

#PineDio USB Dongle @PINE64 successfully receives 28-byte #LoRa Message ... From RAKwireless WisBlock! 🎉

https://github.com/lupyuen/lora-sx1262#receive-message

Why does #PineDio USB Dongle receive 28-byte #LoRa Messages ... But not longer messages? Because CH341 can only transfer up to 31 bytes of SPI data ... And we need 3 bytes for the SX1262 Command Header

https://github.com/lupyuen/lora-sx1262#receive-message

We now have a Linux Driver for #PineDio #LoRa USB Dongle @PINE64 ... That can transmit 29-byte messages and receive 28-byte messages ... Tested on Pinebook Pro Manjaro Arm64 🎉

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

Building a #LoRa SX1262 Driver for #PineDio USB Adapter @PINE64 ... And testing it on Pinebook Pro ... All shall be explained in this article

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

What's inside #PineDio USB Dongle? CH341 connected to #LoRa SX1262 (over SPI)

https://lupyuen.github.io/articles/usb?2#pinedio-lora-usb-adapter

#PineDio USB Dongle runs the exact same #LoRa SX1262 Driver ... As #PineDio Stack BL604!

https://lupyuen.github.io/articles/usb?3#lora-sx1262-driver-for-pinedio-usb

Someday #PineDio USB Dongle shall support #LoRaWAN and The Things Network (Helium too)

https://lupyuen.github.io/articles/usb?4#lorawan-support