Hi, just a quick question, what is the pin number/definition for the SAM R34 pin PA13? My board uses it for the RX/TX switching but I can't access it. I tried to find a reference for this pin in the board variant but wasn't able to find anything. Can anyone help? Thanks.

Hi,

I just wanted to know if there is a guide to or something like that to flash the BastWAN, I have just built some boards myself but I don't know where the UF2 USB bootloader can be found.

Best regards,
Jaime.

Hello there!

I'm also trying to resolve this issue on the TTN forum but here I'm just looking at the BastWAN core aspect.

I recently bought this SAM R34 evaluation board from Tindie with hopes to get to know the processor before doing a custom HW implementation.

After experimentation with ASF and Mbed OS, I was happy I found this Arduino core for the RAK4260 (so also for SAM R34). I managed to burn the UF2 bootloader and upload and test simple Arduino sketches. I managed to get a direct LoRa link working using the Arduino LoRa library. This worked well.

I ran into problems when trying to use LoRaWAN though. I tried using a modified TinyLoRa version, the Beelan-LoRaWAN library with the example from this repo and also the Arduino LMIC library.

When using the TinyLoRa test sketch, the serial output (with memory register debug printouts) looks exactly the same as it does with a working Arduino + SX1276 circuit. But I'm definitely in range of the gateway and I have correct keys. I tried both OTAA and ABP.

When using the Beelan example found on this repo, the printout also acted as if the transmission was happening normally. When I turned on memory register debug printouts though, I found out that the communication with then chip happened only during initialization and there was no communication when transmitting. Again, I didn't receive anything on the TTN console neither with OTAA or ABP.

When I uploaded the LMIC test sketch (with correct pinouts and everything), the processor just crashed and wouldn't communicate. I needed to reburn the bootloader.

I also need to ask about the pinouts. I found out that direct LoRa transmissions only work if the RFM_SWITCH is set to high. Apparently the status of RFM_RFSW_ON and RFM_TCX_ON doesn't affect this at all. I can not find the RX/TX pin in the pin map though. What is the system in this pin mapping? I couldn't find any correlation between the BastWAN pin map and the RAK4260 pinout or even the SAM R34 pinout. Not one pin number seems to match. Does anyone know how the pin mapping is made?

If anyone can advise me about any of this I would really appreciate that. I would like to use this core but it's very hard at the moment. Thanks!

Don't see any reference to SPI flash in schematics. Which PIN is used for flash CS?

I am trying to get the BastWAN to work on LoRaWAN.
Region US915
Gateway RAK7258 (of course)
Server Chirpstack running on RPi 4

I started with the BeeLAN library and it works somehow, but it seems to be limited in functionality (Receiving and processing MAC commands.). In addition, I need support for AS923-3 in the future, but it is difficult to add new regions.

Next I tried your fork of arduino-lmic. But it fails to join. I can see on the gateway the join requests and join accepts, but it seems the app ttn-otaa-bastwan-us915 does not receive the join accept.
Gateway log:

App log:

Packet queued
49579: EV_JOINING
49680: EV_TXSTART
451194: EV_JOIN_TXCOMPLETE: no JoinAccept
453562: EV_TXSTART
833894: EV_JOIN_TXCOMPLETE: no JoinAccept
1134824: EV_TXSTART
1536367: EV_JOIN_TXCOMPLETE: no JoinAccept
1592096: EV_TXSTART
1972379: EV_JOIN_TXCOMPLETE: no JoinAccept
2659950: EV_TXSTART
3061508: EV_JOIN_TXCOMPLETE: no JoinAccept
3067960: EV_TXSTART
3448286: EV_JOIN_TXCOMPLETE: no JoinAccept
3782371: EV_TXSTART
4183891: EV_JOIN_TXCOMPLETE: no JoinAccept
4205018: EV_TXSTART
4585344: EV_JOIN_TXCOMPLETE: no JoinAccept
4739341: EV_TXSTART

Any idea?
I guess I have the pin mapping correct, because I can send.

// Pin mapping for ElectronicCats BastWAN LoRa
const lmic_pinmap lmic_pins = {
  .nss = SS,
  .rxtx = RFM_SWITCH,
  .rst = RFM_RST,
  .dio = {RFM_DIO0, RFM_DIO1, RFM_DIO2},
  .rxtx_rx_active = 0,
  .rssi_cal = 10,              // LBT cal for the Adafruit Feather M0 LoRa, in dB
  .spi_freq = 8000000,
};

Sleep modes with the Arduino IDE

Examples
https://github.com/RAKWireless/RAK4260_Low_Power_demo

Hey,

When I upload the "sender" example code to the RAK4260 with the ElectronicCats bootloader installed it gets stuck in a bootloop(the receiver code works fine). When I comment out the "LoRa.endPacket()" line it will run through the program but will not send any packets(as expected). So I expect that this is the issue but I can't quite figure out why. Please help. Thanks!

UPDATE 1/29:

So... my power supply ended up being bad which was causing a voltage dip during transmission. New power supply... Now the program runs fine however It's not sending any packets. In the serial monitor I get the first "Sending packet: 0" but then the LED just goes on and off with no more data in the serial monitor and nothing being received by my receiver(which I've confirmed works with another LoRa module.)

Dear all,

There is an alternative chip to the U4 (GD25Q16C) SPI Flash on the BastWAN easily accessible in Europe? I have seen that we can get it from LCSC but I was searching for Farnell/RS/Digikey alternative.

What is this chip intended for? Program store? Is it mandatory?

Thank you very much.

Best regards,
Jaime