Robert Pearce

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  1. I have designed a board to program serial flash memories using the JTAG-SMT2-NC operated as an SPI master. This works fine but now I want to use the same board to program an I2C EEPROM (on a different target). FTDI's document "USB to I2C Example using the FT232H and FT201X devices" suggests that this should be possible and I belive that the JTAG-SMT2-NC uses the FT232H. Has anyone tried this? What would the mapping of the connections be? I imagine that it would be:- TMS - connect to Write Protect on the EEPROM TCK - connect to I2C's SCK TDI, TDO - tie together and connec to I2C's SDA alternatively I suppose that one could bit-bash the GPIO pins (GPIO0, GPIO1, and GPIO2) but this would require a hardware change to my adapter that I'd prefer to avoid.