SX1276 LoRa module

So you want to forward Serial data over the LoRa radio?

If so, you'd set up the USART, and then use the SX1272 code from here: http://www.espruino.com/SX127x

A bit like:

// LoRa -----------------
SPI1.setup({ sck:B3, miso:B4, mosi:B5 });
var sx = require("SX127x").connect({spi: SPI1, cs: B6, rst : B7 });
var config = {
  rxContinuous : true
};
// Until DIO0 line irqs are implemented we need this:
setInterval(function() { sx.onIRQ(); }, 100);


// Serial ---------------------
Serial1.setup(9600);
// send data when we receive it
Serial1.on('data', function(d) {
  sx.setTxConfig(config);
  sx.send(d, function() {
    console.log("TX done");
  });
});

But the code above is just an example - to do this properly you want to make sure you didn't call sx.send again until its callback had got called.

Also, I should warn you, the SX127x module hasn't been used a great deal - it's possible that you might hit problems when using it.