MDBT42Q Serial1 use?

[DirkRE]

Hi,
I am trying to build a Lora2BTHome bridge with the MDBT42Q. I have connected a HC-14 Lora-module to the UART-pins and as long as I am in Web-IDE conneted to the MDBT42Q can read via UART pin the HC-14 data and send BLE-beacon to BTHome and data is showing up in Home Assistant. When I use save( ) to transfer code to device flash and re-power the MDBT42Q, it is silence, no data is received via Serial1. What am I doing wrong? Thanks for advice!
Best regards, Dirk

[gfwilliams]

Ahh, yes - this is a classic Espruino gotcha.

Once UART1 is set up, when you disconnect from Bluetooth Espruinos move the console over to UART1, but having the console on UART1 then stops the Serial1.on("data", ...) handler from working.

All you need to do is force the console to stay on Bluetooth, so add the line Bluetooth.setConsole(1) and you'll be good.

[DirkRE]

Thanks Gordon!

It is working now as long as I haven't re-powered the board. When in the IDE and detach from the module, code is working properly and data is received in home assistant. But when power down and up, it is not working, no data received via UART.

This is my code:

Serial1.setup(9600, { tx:D6, rx:D8});

function show(data){
sens_str += data;
if (data == "\r" || data == "\n"){
//console.log(sens_str);
digitalPulse(LED1, 1, 50);
updateAdvertising();
sens_str ="";
}
}

Serial1.on("data", function(data) { show(data); });

var sens_str = "";

function updateAdvertising() {
NRF.setAdvertising(require("BTHome").getAdvertisement([
{
type : "count16",
v : parseInt(sens_str)
},
]), {
name : "WMeter",
manufacturer : false,
});
digitalPulse(LED2, 1, 50);
}

NRF.setTxPower(4);
Bluetooth.setConsole(1);

---

what I don't understand, that in the dump() output on the left IDE side, there is nothing to see like

NRF.setTxPower(4);
Bluetooth.setConsole(1);

Is this correct, or somewhere hidden, which I cannot see?

Thanks!

[gfwilliams]

Ahh - are you writing the code to RAM and then typing save()? I don't think Espruino doesn't stores console state that way. You can either write it to Flash or you can do:

function onInit() {
  NRF.setTxPower(4);
  Bluetooth.setConsole(1);
}

[DirkRE]

Zuper Awesome - it's working!! Thanks a lot!
Great stuff, it is so easy to get data to home assistant, that is great!