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helium / longfi-arduino

Apache License 2.0
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How to increase appDataSize beyond 4 #47

Closed ksaye closed 2 years ago

ksaye commented 2 years ago

In reading Line 101, it would appear that we can increase the appData up to 64.

If I increase it beyond 4, I get the payload size of 0.

static void prepareTxFrame( uint8_t port )
{
    appDataSize = 16;//AppDataSize max value is 64
    for(int counter = 0;counter < 16;counter++) {
       //statements block will executed 10 times
       appData[counter] = 0x00;
    }
}

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What am I missing here?

kent-williams commented 2 years ago

I believe you need to increase the data rate, see instructions here.

ksaye commented 2 years ago

I tried all 4 data rates and even ADR, none helped.

After commenting out line 69 in: https://github.com/HelTecAutomation/ESP32_LoRaWAN/blob/master/src/ESP32_LoRaWAN.cpp#L69, it was able to send a much larger packet. I guess I need to research LoRaMacQueryTxPossible()

image

ksaye commented 2 years ago

FYI. I was even able to send a 128 bit packet, shown below. Nice to know if I need to send a bit larger packet that it works.

image