esp32 heltec with lora 868Mhz

[espruino-discuss3]

Posted at 2018-10-11 by hygy

Hi,

I'm trying to make work 2 esp32 modules with lora. But I did not succed.

espruino version: 1v99.4103
pinout (i hope it is good): https://cdn.hackaday.io/files/269911154782944/Heltec_WIFI-LoRa-32_DiagramPinout.jpg

For tx code i use:

SPI1.setup({ sck:D5, mosi:D27, miso: D19 });

var sx = require("SX127x").connect({spi: SPI1, cs: D18, rst : D14 });

setInterval(function() { sx.onIRQ(); }, 100);

var config = {
  freq: 868E6
};

sx.setTxConfig(config);

sx.send("Hello", function() {
  console.log("TX done");
});

for the rx config i use:

SPI1.setup({ sck:D5, mosi:D27, miso: D19 });

var sx = require("SX127x").connect({spi: SPI1, cs: D18, rst : D14 });

setInterval(function() { sx.onIRQ(); }, 100);

var config = {
  rxContinuous : true,
  freq: 868E6
};

console.log('starting receiver');
sx.setRxConfig(config);
// enter receive mode
sx.rx(function(err, inf) {
  // Error, or you get signal strength and data returned in an object
  if (err) console.log("RX ERROR");
  else console.log("RX>",inf);
});

I got no erros. On tx I got nothing. On rx I got this after upload:

>starting receiver
RX> { "snr": 82, "rssi": 82,
  "data": new Uint8Array([82, 82, 106, 57, 74, 161, 198, 62, 219, 7, 163, 65, 161, 130, 133, 51, 199, 36, 195, 5, 38, 5, 180, 150, 128, 35, 21, 91, 209, 28, 236, 12, 240, 80, 184, 230, 197, 134, 10, 22, 185, 154, 4, 0, 65, 225, 192, 10, 25, 14, 79, 117, 132, 194, 240, 160, 192, 83, 163, 48, 201, 0, 242, 12, 28, 228, 98, 16, 132, 5, 180, 231, 64, 201, 65, 82, 108, 14, 10, 232, 244, 114])
 }

What I'm doing wrong?

thanks