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il3897-spin's Introduction

il3897-spin


This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for IL3897 E-Ink displays.

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

  • P1: SPI connection at ~28kHz (bytecode SPI engine), 20MHz (PASM-based engine)
  • P2: SPI connection at up to 20MHz

Requirements

P1/SPIN1:

  • spin-standard-library
  • 1 additional core/cog for the PASM SPI engine (none if bytecode engine is used)
  • graphics.common.spinh (provided by spin-standard-library)

P2/SPIN2:

  • p2-spin-standard-library
  • 250MHz sys clock, for 20MHz SPI bus speed (limit at 180MHz default is 13MHz)
  • graphics.common.spin2h (provided by spin-standard-library)

Compiler Compatibility

Processor Language Compiler Backend Status
P1 SPIN1 FlexSpin (6.8.0) Bytecode OK
P1 SPIN1 FlexSpin (6.8.0) Native/PASM OK
P2 SPIN2 FlexSpin (6.8.0) NuCode OK (Untested)
P2 SPIN2 FlexSpin (6.8.0) Native/PASM2 OK

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

Hardware Compatibility

Limitations

  • Tri-color panels (e.g., with additional red channel) aren't supported
  • Horizontal mirroring not supported
  • Rotation not supported

il3897-spin's People

Contributors

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Watchers

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il3897-spin's Issues

Rewrite hardcoded "magic"

Currently, there are a few items in the driver that use hardcoded register values, or other "magic" looking numbers that are meaningless or cryptic to someone not intimately familiar with the device's datasheet.

P2/SPIN2 driver doesn't function above 15MHz

This may be a limitation of the SPI engine used (granularity of SPI clock period setting versus system clock), but nothing is displayed when the SPI clock is set to frequencies above 15MHz (Fsys: 160MHz)

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