NRF24L01 fails on sendCommand

Hey Espruinos!

I tried to follow this example: https://github.com/espruino/EspruinoDocs­/blob/master/devices/NRF24L01P.md

As I have already the display connected to the middle pins, I like to use the side Pins A0, A1 and B3 to B5 to connect the NRF24L01. So here is my setup:

SPI3.setup({sck:B3, miso:B4, mosi:B5}); 
var nrf = require("NRF24L01P").connect( SPI3, A0, A1 );

My 2nd one (the slave) is set up like described in the example. When I try to send a command like (or also something similar):

nrf.sendCommand("1+2", function(r) { print("=="+r); });

I get this issue:

ERROR: Field or method does not already exist, and can't create it on a non-object at line 2 col 74
0;c<=a.length;c+=this.PAYLOAD){for(var d=...

Does anyone knows what that means? I'm using VERSION 1v61

Thanks & best regards, Andreas

Hi Andreas,

Sorry about this. Something got broken in the NRF24's module. I've just fixed it, so if you click 'send to Espruino' again now, it should be fixed!

Hi Gordon,

Thanks a lot for your fast & great support! It works perfektly now.

Best Regards, Andreas

Hi Gordon,

I still have one more question:
Let's say on the slave there is a function like

function do_measurement () {
return analogRead(C0, 0.05);
}

How can I get the return value on the master? I'm looking for a thing like

measurement_value = nrf.sendCommand("do_measurement()");

Would be great if you (or someone else) have any example how to do this.

Thanks & Regards, Andreas

Hi,

You should be able to do:

nrf.sendCommand("do_measurement()", function (myValue) {
  console.log(myValue);
});

You need the callback because the value won't be returned immediately - it'll only happen after a fraction of a second...