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

Tagged: Arduino, E220, micropython, Raspberry

This topic has 3 replies, 2 voices, and was last updated 1 year, 10 months ago by Renzo Mischianti.

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- 8 January 2024 at 15:25 #29080
  woto
  Participant
  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.
- 8 January 2024 at 17:26 #29082
  Renzo Mischianti
  Keymaster
  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
  - This reply was modified 1 year, 10 months ago by Renzo Mischianti.
- 8 January 2024 at 18:41 #29087
  woto
  Participant
  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
- 8 January 2024 at 20:46 #29088
  Renzo Mischianti
  Keymaster
  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
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