Simon: Created page with "==Lora Gateway== '''Setup of the MicroTik wAP LR9''' Access the Things Network Portal on https://au1.cloud.thethings.network/console/ ([https://au1.cloud.thethings.network/console/ (link)] Add a gateway, but you must use the Gateway EUI which comes from WinBox File:MikroTik1.png Then add this Gateway EUI to the Gateways setting in TTN Portal
Also add the gateway Server Address to the au1.cloud.thethings.network File:MikroTik3.png File:MikroTik2.png..."

2023-08-27T22:45:25Z

Created page with "==Lora Gateway== '''Setup of the MicroTik wAP LR9''' Access the Things Network Portal on https://au1.cloud.thethings.network/console/ ([https://au1.cloud.thethings.network/console/ (link)] Add a gateway, but you must use the Gateway EUI which comes from WinBox File:MikroTik1.png Then add this Gateway EUI to the Gateways setting in TTN Portal<br> Also add the gateway Server Address to the au1.cloud.thethings.network File:MikroTik3.png File:MikroTik2.png..."

New page

==Lora Gateway==
'''Setup of the MicroTik wAP LR9'''
Access the Things Network Portal on https://au1.cloud.thethings.network/console/ ([https://au1.cloud.thethings.network/console/ (link)]

Add a gateway, but you must use the Gateway EUI which comes from WinBox

[[File:MikroTik1.png]]

Then add this Gateway EUI to the Gateways setting in TTN Portal<br>
Also add the gateway Server Address to the au1.cloud.thethings.network

[[File:MikroTik3.png]]

[[File:MikroTik2.png]]

==Nodes==

===Heltec===

[https://github.com/lnlp/LMIC-node Link to LMIC setup for Heltec]

[https://heltec-automation-docs.readthedocs.io/en/latest/general/sub_band_usage.html Heltec data page on frequencies]

[https://docs.platformio.org/en/latest/what-is-platformio.html Use platformio to upload and monitor Heltecs]

On the TTN Console add new devices under the "applications" portal. Register a new device manually. Select "S''how advanced activation...''." to expose the ABP setiings

[[File:Heltec1.png|first page]]

Then generate a new DevEUI (not used) plus Device Address, AppSKey and NwkSKey which are used.

[[File:Heltec2.png|scroll down]]

Set the Network server address and application server address to my Australian portal

[[File:Heltec3.png|after scrolling some more]]

and save changes.

Once edited and added, then re-open the device under 'applications portal'. Scroll down and expand ''''Network layer''''

[[File:Heltec4.png]]

keep scrolling until you can expand the "Advanced MAC settings and select "Resets frame counter" to enabled

[[File:Heltec5.png]]

Add a payload formatter specific to this device

[[File:heltec7.png]]

<pre>
function Decoder(bytes, port) {
// Decode an uplink message from a buffer
// (array) of bytes to an object of fields.
var decoded = {};
// temperature
rawTemp = bytes[0] + bytes[1] * 256;
decoded.degreesC = sflt162f(rawTemp) * 100;
// humidity
rawHumid = bytes[2] + bytes[3] * 256;
decoded.humidity = sflt162f(rawHumid) * 100;
return decoded;
}

function sflt162f(rawSflt16)
{
// rawSflt16 is the 2-byte number decoded from wherever;
// it's in range 0..0xFFFF
// bit 15 is the sign bit
// bits 14..11 are the exponent
// bits 10..0 are the the mantissa. Unlike IEEE format,
// the msb is transmitted; this means that numbers
// might not be normalized, but makes coding for
// underflow easier.
// As with IEEE format, negative zero is possible, so
// we special-case that in hopes that JavaScript will
// also cooperate.
//
// The result is a number in the open interval (-1.0, 1.0);
//
// throw away high bits for repeatability.
rawSflt16 &= 0xFFFF;

// special case minus zero:
if (rawSflt16 == 0x8000)
return -0.0;

// extract the sign.
var sSign = ((rawSflt16 & 0x8000) != 0) ? -1 : 1;

// extract the exponent
var exp1 = (rawSflt16 >> 11) & 0xF;

// extract the "mantissa" (the fractional part)
var mant1 = (rawSflt16 & 0x7FF) / 2048.0;

// convert back to a floating point number. We hope
// that Math.pow(2, k) is handled efficiently by
// the JS interpreter! If this is time critical code,
// you can replace by a suitable shift and divide.
var f_unscaled = sSign * mant1 * Math.pow(2, exp1 - 15);

return f_unscaled;
}
</pre>

Then in Visual Studio Code, open the platformio.ini file and enter the device address, NWKSKEY and APPSKEY as per the values created in the portal above

[[File:Heltec6.png]]

Lora Gateway and Nodes - Revision history