sdmem spin

sdmem-spin

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This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for SDHC/SDXC memory cards

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 ~25kHz
• Supports SDHC, SDXC cards
• Supports 3.3v or Low-voltage range cards
• Read/write 512-byte blocks

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 (5.9.10-beta)	Bytecode	OK
P1	SPIN1	FlexSpin (5.9.10-beta)	Native code	OK
P1	SPIN1	OpenSpin (1.00.81)	Bytecode	Untested (deprecated)
P2	SPIN2	FlexSpin (5.9.10-beta)	NuCode	Untested
P2	SPIN2	FlexSpin (5.9.10-beta)	Native code	Not yet implemented
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

• Very early in development - may malfunction, or outright fail to build
• Currently developed with slow bytecode SPI engine, until reliability is established