Send LoRa message from Arduino C env to MicroPython with Raspberry Pi Pico

[woto]

Ok, now I have tried to send a string with the following settings:
Sender
ADDH = 00
ADDL = 03
CHAN = 18
FIXED TRANSMISSION
RSSI Enabled

Here I use the Arduino library.

and call the function as follows:

ResponseStatus rs = e220ttl.sendFixedMessage(0, DESTINATION_ADDL, 18, "Hello, world?");

Receiver
ADDH = 00
ADDL = 03
CHAN = 18
FIXED TRANSMISSION
RSSI Enabled

Here I use the Micropython library as follows:

while True:
    if lora.available() > 0:
...

Unfortunately, the receiver does not receive a string.

[Renzo Mischianti]

Hi woto,
you have configured the Address and Channel for transparent transmission and set fixed transmission.

Follow these tutorials to send fixed message
Ebyte LoRa E220 device for Arduino, esp32 or esp8266: fixed transmission, broadcast, monitor, and RSSI – 4

this is for E32 and micropython but you can get some ideas
EByte LoRa E32 & MicroPython: a deep dive into transmission types – 4

Bye Renzo

[woto]

Hi Renzo,
Thank you very much.

Sometimes i can’t see the wood for the trees (German proverb).

So thank you very much.

best regards
Woto

[Renzo Mischianti]

Sorry Woto,
if you set the ADDH, ADDL, and CHAN with the same value, you have configured the devices to communicate in transparent transmission.

To use fixed transmission, you must set a different ADDH or ADDL and send the message from the first by setting the receiver’s destination address.

So, if you have configured the sender

ADDH = 00
ADDL = 03
CHAN = 18

you must configure the receiver

ADDH = 00
ADDL = 04
CHAN = 18

and in the sender
ResponseStatus rs = e220ttl.sendFixedMessage(0, 4, 18, "Hello, world?");

But I think you must check the articles, they can be more clean.

Bye Renzo

[Author]

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