Software driver needed for the microchip MCP23017 I/O expander

Hi everyone, I'm inquiring to find out if anyone has written a software driver for the ADI BF518 Blackfin Processor that controls the microchip MCP23017 16-Bit I/O Expander with Serial Interface. If anyone has written code for this and wouldn't mind sharing it, please let me know.

Thank you!

Jeff

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