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Ligne 19 : − {{traduction}} + − + + + + + + + + + − Instead, 99% of cases are best off using packetized mode. This means you can set up a recipient for your data, error correction so you can be sure the whole data set was transmitted correctly, automatic re-transmit retries and return-receipt when the packet was delivered. Basically, you get the transparency of a data pipe without the annoyances of radio transmission unreliability
→Raw vs Packet Transmission
== Raw vs Packet Transmission ==
== Raw vs Packet Transmission ==
[[Fichier: ENG-CANSAT-RFM69HCW-SX1231.png]]
The SX1231 can be used in a 'raw rx/tx' mode where it just modulates incoming bits from pin #2 and sends them on the radio, however there's no error correction or addressing so we wont be covering that technique.
The SX1231 module used on the breakout board can be used in 'raw Rx/Tx' where it modulates incoming bits (from pin #2) and sends them on the radio. In 'raw Rx/Tx' there is no error correction and no addressing. This mode is weak and error prone so it will not be covered.
Packet mode will be suited for almost 99% of use cases. When packetized, the code can setup a recipient for the data, ensure error correction (''data transmitted correctly''), automatic retries on transmission error and acknowledgement when the packet is delivered. In packet mode, you got a reliable data pipe, transparent communication without getting care about the complex details of data transmission over radio frequencies.
With a SX1231 module, the complexity is reduced to 4 main characteristics more easy to handle:
* the frequency to use
* the power level to use
* the encryption key to use
* the appropriate antenna (depending on the expected transmission range)
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