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ElectronicCats / Beelan-LoRaWAN

A LoRaWAN library for compatible arduino board
https://www.beelan.mx
MIT License
190 stars 78 forks source link

Downlink not working #115

Closed a-backman closed 2 years ago

a-backman commented 2 years ago

Hi,

I have trouble getting downlink to work. I'm using this device: https://www.makerfabs.com/wiki/index.php?title=LoRa_AC_Dimmer. Joining and uplink works fine. I've tried sending a downlink package and I can see that my network server (chirpstack) sends it, but it is not received by the device.

After a while I get garbage output:

Joining...
Joined to network
Sending: Counter-0
Sending: Counter-1
Sending: Counter-2
Sending: Counter-3
Sending: Counter-4
Sending: Counter-5
Sending: Counter-6
Sending: Counter-7
Sending: Counter-8
Sending: Counter-9
Sending: Counter-10
====>

Sending: Counter-11
====>
�ăPc|w{�ko�0␁g+�׫vʂ�}�YG�Ԣ���r����&6?��4���q�1␕␄�#�␘�␅�␇␒���'�u �,␚␛nZ�R;ֳ)�/�S�
Sending: Counter-12
====>

Sending: Counter-13
====>
�4���q�1␕␄�#�␘�␅�␇␒���'�u   �,␚␛nZ�
Sending: Counter-14
====>
۽M
Sending: Counter-15
====>
s��␁&����QN�PR{9i��-����{��Z��␇t␇/��

My code:

#define EU_868

#include <lorawan.h>

// OTAA credentials
const char *devEui = "0000000000000000";
const char *appEui = "0000000000000000";
const char *appKey = "00000000000000000000000000000000";

const unsigned long interval = 10000; // 10 s interval to send message
unsigned long previousMillis = 0;     // will store last time message sent
unsigned int counter = 0;             // message counter

char myStr[50];
char outStr[255];

byte recvStatus = 0;

bool ackStatus;

const sRFM_pins RFM_pins = {
    .CS = 10,
    .RST = 9,
    .DIO0 = 2,
    .DIO1 = 6,
    .DIO2 = 7,
    .DIO5 = 8
};

void setup()
{
    // Setup loraid access
    Serial.begin(9600);
    while (!Serial);
    if (!lora.init())
    {
        Serial.println("RFM95 not detected");
        delay(5000);
        return;
    }

    // Set LoRaWAN Class change CLASS_A or CLASS_C
    lora.setDeviceClass(CLASS_C);

    // Set Data Rate
    lora.setDataRate(SF9BW125);

    // set channel to random
    lora.setChannel(MULTI);

    // Put OTAA Key and DevAddress here
    lora.setDevEUI(devEui);
    lora.setAppEUI(appEui);
    lora.setAppKey(appKey);

    // Join procedure
    bool isJoined;
    do
    {
        Serial.println("Joining...");
        isJoined = lora.join();

        // wait for 10s to try again
        delay(10000);
    } while (!isJoined);
    Serial.println("Joined to network");
}

void loop()
{
    // Check interval overflow
    if (millis() - previousMillis > interval)
    {
        previousMillis = millis();

        sprintf(myStr, "Counter-%d", counter);

        Serial.print("Sending: ");
        Serial.println(myStr);

        lora.sendUplink(myStr, strlen(myStr), 0, 1);
        counter++;
    }

    recvStatus = lora.readData(outStr);
    if (recvStatus)
    {
        Serial.println("====>");
        Serial.println(outStr);
    }

    // Check Lora RX
    lora.update();
}
CCMDD commented 2 years ago

its representing data with char, not bytes so for example you can see witch byte is witch symbol

41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 A B C D E F G H I P Q R S T U V W X Y

a-backman commented 2 years ago

I've updated my sketch to print the received data as HEX instead. I still cannot make sense out of what I receive. Sometimes I get this garbage data directly after join, sometimes it takes a while.

It does not correspond with when I send the downlink message. The downlink message I've tested with is "ABAB" (0x41, 0x42, 0x41, 0x42).

Joining...
Joined to network
Sending: Counter-0
[]
Sending: Counter-1
[FFFFFFD0FFFFFFEFFFFFFFAAFFFFFFFB434D33FFFFFF8545FFFFFFF927F503CFFFFFF9FFFFFFFA851FFFFFFA340FFFFFF8FFFFFFF92FFFFFF9D38FFFFFFF5FFFFFFBCFFFFFFB6FFFFFFDA2110FFFFFFFFFFFFFFF3FFFFFFD2FFFFFFCDC13FFFFFFEC5FFFFFFF974417FFFFFFC4FFFFFFA77E3D645D197360FFFFFF814FFFFFFFDC222AFFFFFF90FFFFFF8846FFFFFFEEFFFFFFB814FFFFFFDE5EBFFFFFFDBFFFFFFE0323AA496245CFFFFFFC2FFFFFFD3FFFFFFAC62FFFFFF91FFFFFF95FFFFFFE479]
Sending: Counter-2
[676F794620FFFFFFF5FFFFFF8AFFFFFF9AFFFFFFABBFFFFFFA41C3012FFFFFFB37010FFFFFF8E21397]
Sending: Counter-3
[]
Sending: Counter-4
[1B6E5AFFFFFFA0523BFFFFFFD6FFFFFFB329FFFFFFE32FFFFFFF8453FFFFFFD1]
Sending: Counter-5
[29FFFFFFB0FFFFFFF2FFFFFF953462FFFFFFB41822FFFFFF92FFFFFFFDDFFFFFF8022FFFFFFC2FFFFFFFD60732326FFFFFFD27FFFFFFFDCFFFFFFD9FFFFFFD72368FFFFFF94FFFFFFF332FFFFFF84FFFFFF97FFFFFFE267FFFFFFE16]
Sending: Counter-6
[722D36]
Sending: Counter-7
[8668568466FFFFFF9D1E167431EFFFFFF95FFFFFFBD1CFFFFFF9CFFFFFFBBFFFFFFD8D56FFFFFFEB3744FFFFFFE3161FFFFFFD036FFFFFFBC1D]
Sending: Counter-8
[]
Sending: Counter-9
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
Sending: Counter-10
[BFFFFFFDBFFFFFFE0323AA496245CFFFFFFC2FFFFFFD3FFFFFFAC62FFFFFF91FFFFFF95FFFFFFE479FFFFFFE7FFFFFFC8376DFFFFFF8DFFFFFFD54EFFFFFFA96C56FFFFFFF4FFFFFFEA657AFFFFFFAE8FFFFFFBA78252E1CFFFFFFA6FFFFFFB4FFFFFFC6FFFFFFE8FFFFFFDD741F4BFFFFFFBDFFFFFF8BFFFFFF8A703EFFFFFFB566483FFFFFFF6E613557FFFFFFB9FFFFFF86FFFFFFC11DFFFFFF9EFFFFFFE1FFFFFFF8FFFFFF981169FFFFFFD9FFFFFF8EFFFFFF94]
Sending: Counter-11
[696E672E2E2E]
Sending: Counter-12
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
#define EU_868

#include <lorawan.h>

// OTAA credentials
const char *devEui = "cc50e3b5f67c40b4";
const char *appEui = "0000000000000000";
const char *appKey = "b59163edfcdad654267dd0469d8a55f5";

const unsigned long interval = 10000; // 10 s interval to send message
unsigned long previousMillis = 0;     // will store last time message sent
unsigned int counter = 0;             // message counter

char myStr[50];
char outStr[255];

byte recvStatus = 0;

bool ackStatus;

const sRFM_pins RFM_pins = {
    .CS = 10,
    .RST = 9,
    .DIO0 = 2,
    .DIO1 = 6,
    .DIO2 = 7,
    .DIO5 = 8};

void setup()
{
    // Setup loraid access
    Serial.begin(9600);
    while (!Serial)
        ;
    if (!lora.init())
    {
        Serial.println("RFM95 not detected");
        delay(5000);
        return;
    }

    // Set LoRaWAN Class change CLASS_A or CLASS_C
    lora.setDeviceClass(CLASS_C);

    // Set Data Rate
    lora.setDataRate(SF9BW125);

    // set channel to random
    lora.setChannel(MULTI);

    // Put OTAA Key and DevAddress here
    lora.setDevEUI(devEui);
    lora.setAppEUI(appEui);
    lora.setAppKey(appKey);

    // Join procedure
    bool isJoined;
    do
    {
        Serial.println("Joining...");
        isJoined = lora.join();

        // wait for 10s to try again
        delay(10000);
    } while (!isJoined);
    Serial.println("Joined to network");
}

void loop()
{
    // Check interval overflow
    if (millis() - previousMillis > interval)
    {
        previousMillis = millis();

        sprintf(myStr, "Counter-%d", counter);

        Serial.print("Sending: ");
        Serial.println(myStr);

        lora.sendUplink(myStr, strlen(myStr), 0, 1);
        counter++;
    }

    recvStatus = lora.readData(outStr);
    if (recvStatus)
    {
        Serial.print("[");
        for (int n = 0; n <= 255; n++)
        {
            if (outStr[n] == 0)
                break;
            Serial.print(outStr[n], HEX);
        }
        Serial.println("]");
    }

    // Check Lora RX
    lora.update();
}
IoTThinks commented 2 years ago

Seems working for my AS_923_2.

Downlink from server. The server requires downlink message in base64. image

"hello" and base64 image

Node to receive "hello" image

sascha-hemi commented 2 years ago

Hey @a-backman did you get it working? I have the same issue :/

sascha-hemi commented 2 years ago

My Output looks like:

'�zV�,�S���1��_Qg;��J����e��s��d�+~���U��_� ���ϒ6����?��� ������<�p�o�=;eZ�_ޙ�ں�K�}�5u1�t�HUМ�_������+y��e�0���K|�3=��1�&��^+����W����m��Z��|����a�qg�w^�f�]��[o��qQ���ۢ&M�Cs�>�B��]�z�)5c�����3;��j���Ξ�����4�~P���>�?w��N5ٚ�,{�8�N�6k��x��-㶆s�?��}�T��/�B?��?�@��Z󿽮 >�V���7�f�M�k�7�>�I$�:�/�X�����$�]��C.?@e{Ď�K},eeR�wy��BڟM M�ѧ��n?W��HB�;[�2/qdc�Q�&���������J��

a-backman commented 2 years ago

Hey @sascha-hemi, no I didn't. Still have the same issue.

sascha-hemi commented 2 years ago

My Controller is a Sparkfun Pro Micro running at 8Mhz. Is 8Mhz to slow?

IoTThinks commented 2 years ago

I confirm the downlink is only working for Class A but not working for Class C.

IoTThinks commented 2 years ago

I created a pull request to fix the downlink in Class C for AS923/AS923-2 just now. https://github.com/BeelanMX/Beelan-LoRaWAN/pull/127

wero1414 commented 2 years ago

@IoTThinks Merged already thanks!