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sx1231-spin's Introduction

sx1231-spin

This is a P8X32A/Propeller driver object for the Semtech SX1231 UHF Transceiver (SPI)

IMPORTANT: This software is meant to be used with the spin-standard-library (P8X32A) or p2-spin-standard-library (P2X8C4M64P). Please install the applicable library first before attempting to use this code, otherwise you will be missing several files required to build the project.

Salient Features

  • SPI connection at up to 1MHz (P1), 10MHz (P2)
  • Set on-air bitrate
  • Set carrier center freq
  • Set carrier deviation freq
  • Set modulation type
  • Set transmit power
  • Set number of preamble bytes
  • Set packet length
  • Set syncword (and length of)
  • Enable and read on-chip low-battery status
  • Address matching/filtering (including broadcast)
  • CRC generation/checking
  • Data whitening or Manchester encoding (untested)
  • Encryption (untested)
  • Configure GPIO (DIO0..5) functionality

Requirements

P1/SPIN1:

  • spin-standard-library
  • 1 extra core/cog for the PASM SPI engine

P2/SPIN2:

  • p2-spin-standard-library

Compiler Compatibility

Processor Language Compiler Backend Status
P1 SPIN1 FlexSpin (5.9.14-beta) Bytecode OK
P1 SPIN1 FlexSpin (5.9.14-beta) Native code OK
P1 SPIN1 OpenSpin (1.00.81) Bytecode Untested (deprecated)
P2 SPIN2 FlexSpin (5.9.14-beta) NuCode Untested
P2 SPIN2 FlexSpin (5.9.14-beta) Native code OK
P1 SPIN1 Brad's Spin Tool (any) Bytecode Unsupported
P1, P2 SPIN1, 2 Propeller Tool (any) Bytecode Unsupported
P1, P2 SPIN1, 2 PNut (any) Bytecode Unsupported

Limitations

  • Because of the max length of the syncword supported by the chip (8 bytes/64bits), the API for SyncWord() currently breaks the standard, by providing two parameters

sx1231-spin's People

Contributors

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Watchers

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sx1231-spin's Issues

SyncWord() isn't wireless.transceiver API compliant

SyncWord() should take one parameter - it currently has two: a read current/write new flag, and because the chip is capable of up to 8-byte syncwords, the syncword data parameter needs to be a pointer to a buffer to read into/write from.

Add support for reset pin

The chip has a reset pin (6) - this should have optional runtime support, so a slim Reset() could be used instead of the large-ish Defaults().

Add support for Channel()

It would be emulated, since the chip lacks a dedicated channel number register, but it should be reasonably straightforward to emulate it in software by using the current channel bandwidth.

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