After a two week “soak test” using a Sparkfun Thing Plus ESP32 WROOM and RAK3172 Breakout Board completed with no failures, this final post covers the usage of the RAK3172LoRaWAN-NetNF library in a “real-world” application.
Before a factory reset the DevEUI, JoinEUI (was AppEUI), and AppKey were values I had configured earlier
12:02:04 0 TX:AT+DEVEUI=? bytes:11--------------------------------
AT+DEVEUI=A..............1
OK
12:03:05 0 TX:AT+APPEUI=? bytes:11--------------------------------
AT+APPEUI=A..............8
OK
12:04:03 0 TX:AT+APPKEY=? bytes:11--------------------------------
AT+APPKEY=C..............................F
OK
After a factory reset the DevEUI, JoinEUI (was AppEUI), and AppKey were default values
12:00:21 0 TX:AT+DEVEUI=? bytes:11--------------------------------
AT+DEVEUI=0000000000000000
OK
12:01:09 0 TX:AT+APPEUI=? bytes:11--------------------------------
AT+APPEUI=0000000000000000
OK
12:01:48 0 TX:AT+APPKEY=? bytes:11--------------------------------
AT+APPKEY=00000000000000000000000000000000
OK
I then ran the RAK3172LoRaWANDeviceClient with the following preprocessor directives defined to reconfigure the RAK3172 module.
//---------------------------------------------------------------------------------
//#define ST_STM32F769I_DISCOVERY // nanoff --target ST_STM32F769I_DISCOVERY --update
#define ESP32_WROOM // nanoff --target ESP32_REV0 --serialport COM17 --update
#define DEVICE_DEVEUI_SET
//#define FACTORY_RESET
///#define PAYLOAD_BCD
#define PAYLOAD_BYTES
#define OTAA
//#define ABP
//#define CONFIRMED
#define UNCONFIRMED
#define REGION_SET
#define ADR_SET
//#define SLEEP
namespace devMobile.IoT.LoRaWAN
{
...
I could then run the RAK3172LoRaWANDeviceClient with only PAYLOAD_BCD or PAYLOAD_BYTES defined
//---------------------------------------------------------------------------------
//#define ST_STM32F769I_DISCOVERY // nanoff --target ST_STM32F769I_DISCOVERY --update
#define ESP32_WROOM // nanoff --target ESP32_REV0 --serialport COM17 --update
//#define DEVICE_DEVEUI_SET
//#define FACTORY_RESET
///#define PAYLOAD_BCD
#define PAYLOAD_BYTES
//#define OTAA
//#define ABP
//#define CONFIRMED
//#define UNCONFIRMED
//#define REGION_SET
//#define ADR_SET
//#define SLEEP
namespace devMobile.IoT.LoRaWAN
{
...
public static void Main()
{
Result result;
Debug.WriteLine("devMobile.IoT.RAK3172LoRaWANDeviceClient starting");
try
{
// set GPIO functions for COM2 (this is UART1 on ESP32)
#if ESP32_WROOM
Configuration.SetPinFunction(Gpio.IO17, DeviceFunction.COM2_TX);
Configuration.SetPinFunction(Gpio.IO16, DeviceFunction.COM2_RX);
#endif
Debug.Write("Ports:");
foreach (string port in SerialPort.GetPortNames())
{
Debug.Write($" {port}");
}
Debug.WriteLine("");
using (Rak3172LoRaWanDevice device = new Rak3172LoRaWanDevice())
{
result = device.Initialise(SerialPortId, 115200, Parity.None, 8, StopBits.One);
if (result != Result.Success)
{
Debug.WriteLine($"Initialise failed {result}");
return;
}
MessageSendTimer = new Timer(SendMessageTimerCallback, device, Timeout.Infinite, Timeout.Infinite);
device.OnJoinCompletion += OnJoinCompletionHandler;
device.OnReceiveMessage += OnReceiveMessageHandler;
#if CONFIRMED
device.OnMessageConfirmation += OnMessageConfirmationHandler;
#endif
#if FACTORY_RESET
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} FactoryReset");
result = device.FactoryReset();
if (result != Result.Success)
{
Debug.WriteLine($"FactoryReset failed {result}");
return;
}
#endif
#if DEVICE_DEVEUI_SET
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} Device EUI");
result = device.DeviceEui(Config.devEui);
if (result != Result.Success)
{
Debug.WriteLine($"DeviceEUI set failed {result}");
return;
}
#endif
#if REGION_SET
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} Region{Band}");
result = device.Band(Band);
if (result != Result.Success)
{
Debug.WriteLine($"Band on failed {result}");
return;
}
#endif
#if ADR_SET
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} ADR On");
result = device.AdrOn();
if (result != Result.Success)
{
Debug.WriteLine($"ADR on failed {result}");
return;
}
#endif
#if CONFIRMED
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} Confirmed");
result = device.UplinkMessageConfirmationOn();
if (result != Result.Success)
{
Debug.WriteLine($"Confirm on failed {result}");
return;
}
#endif
#if UNCONFIRMED
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} Unconfirmed");
result = device.UplinkMessageConfirmationOff();
if (result != Result.Success)
{
Debug.WriteLine($"Confirm off failed {result}");
return;
}
#endif
#if OTAA
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} OTAA");
result = device.OtaaInitialise(Config.JoinEui, Config.AppKey);
if (result != Result.Success)
{
Debug.WriteLine($"OTAA Initialise failed {result}");
return;
}
#endif
#if ABP
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} ABP");
result = device.AbpInitialise(Config.DevAddress, Config.NwksKey, Config.AppsKey);
if (result != Result.Success)
{
Debug.WriteLine($"ABP Initialise failed {result}");
return;
}
#endif
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} Join start Timeout:{JoinTimeOut:hh:mm:ss}");
result = device.Join(JoinTimeOut);
if (result != Result.Success)
{
Debug.WriteLine($"Join failed {result}");
return;
}
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} Join started");
Thread.Sleep(Timeout.Infinite);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
One of the major differences between the RAK4200 and RAK3127 libraries is the way a LoRaWAN network join is handled. The RAK4200 library Join method blocks until it succeeds of fails, the RAK3172 library Join method returns immediately then an EventHandler is called with the result.
private static void OnJoinCompletionHandler(bool result)
{
Debug.WriteLine($"{DateTime.UtcNow:hh:mm:ss} Join finished:{result}");
if (result)
{
MessageSendTimer.Change(MessageSendTimerDue, MessageSendTimerPeriod);
}
}
The new RAK Wireless LoRaWAN modules use the RUI3 AT Commands so the RAK3172 library will most probably be retired and uses as the basis for a generic RUI3 library.
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