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85xxxx-spin's Introduction

85xxxx-spin

This is a P8X32A/Propeller driver object for I2C FRAM memories

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

  • I2C connection at up to 1MHz (P2 tested up to 700kHz)
  • Supports densities up to 1Mbit
  • Read, write a single byte, or multiple bytes per transaction
  • Read device ID (for devices that support it)
  • Supports alternate slave addresses

Requirements

P1/SPIN1:

  • spin-standard-library
  • 1 extra core/cog for PASM I2C engine
  • memory.common.spinh (provided by spin-standard-library)

P2/SPIN2:

  • p2-spin-standard-library
  • memory.common.spin2h (provided by p2-spin-standard-library)

Compiler Compatibility

Processor Language Compiler Backend Status
P1 SPIN1 FlexSpin (6.1.1) Bytecode OK
P1 SPIN1 FlexSpin (6.1.1) Native/PASM OK
P2 SPIN2 FlexSpin (6.1.1) NuCode FTBFS
P2 SPIN2 FlexSpin (6.1.1) Native/PASM2 OK

(other versions or toolchains not listed are not supported, and may or may not work)

Limitations

  • Very early in development - may malfunction, or outright fail to build
  • Mfr/density combinations other than Fujitsu 256kbit are untested

85xxxx-spin's People

Contributors

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Watchers

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85xxxx-spin's Issues

Not functional when built with FlexSpin

The demo doesn't run correctly when the project is built with FlexSpin (P1, pasm output). The displayed hexdump is frozen at address 0 of the FRAM and won't advance.

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