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ENG-CANSAT-PICO-MISSION1-RECEIVE (voir la source)
Version du 6 mars 2022 à 20:41
, 6 mars 2022 à 20:41→Wiring
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== Download the code ==
The code is available for download on the [https://github.com/mchobby/cansat-belgium-micropython GitHub associated to this wiki].
{{download-box|Téléchargez Mission1 Base Station Receiver script (basestation.py)|https://github.com/mchobby/cansat-belgium-micropython/blob/main/mission1/basestation.py}}
== About testing ==
Once the script {{fname|basestation.py}} renamed as {{main.py}} and uploaded to the board, just restart the board to make it running.
{{ambox|text=It also possible to start the script from REPL with the instruction {{fname|import basestation}} }}
The data can be view onto the REPL/Shell session by using Thonny, Putty, MPRemote.
You should see the following messages appearing in the REPL.
[[Fichier:ENG-CANSAT-PICO-MISSION1-RECEIVER-20.png]]
Where we could see the received messages with additional information.
<nowiki>[DATA](len=<data_len>,RSSI=<radio_rssi>)<transmitted_data></nowiki>
* Each data received and send over the serial connection are prefixed with '''[DATA]'''
* The prefix is followed by information enclosed between parenthesis '''()''', this concerns the ''received data''.<br />Entries are key=value pairs separated by coma.
* At the end, we retrieve the transmitted data (under their binary content).
* The message contained into the [DATA] section is decoded to an utf8 string.
In the informations:
* '''data_len''': length of the data stream received.
* '''RSSI''': indicated the [https://en.wikipedia.org/wiki/Received_signal_strength_indication strength of the signal] (-15 at best, -90 at worst).
* '''transmitted_data''': the data as transmitted by the emitter. As designed in the emitter, it starts with ''':''' and ends with ''';\r\n'''
In the '''transmitted_data''', we can identify:
* The packet counter
* The time counter (milliseconds)
* The temperature (from tmp36)
* The atmospheric pressure (from bmp280)
* The temperature2 (from bmp280)
{{ENG-CANSAT-PICO-TRAILER}}
{{ENG-CANSAT-PICO-TRAILER}}