OLIMEX DuinoMite, User Manual

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NOTES!
D0 & D1 are wired via protection resistors to the RS232 connector (COM4) on the DuinoMite-Mega
this means that if there are signals on the RS232 connector they will affect D0, if D1 is initialized as
INPUT this signal will merge with the signal on ARDUINO.D0 connector. Also if D1 is initialized as
output it will affect COM4 port transmission. If you want to separate COM4 from D0 and D1 you can
do this by removing R2 and R3.
As COM1: TX, RX are available on same D0 D1 ports anyway, R2 and R3 may be removed unless you
need a fast UART there.
These ports share more than one function together and should be used with care:
ARDUINO.D8 → PIN(19) → UEXT.CS/VIDEO.SELECT
ARDUINO.D9 → PIN(20) → LED2(YELLOW) VGA.SYNC
ARDUINO.D10 → PIN(7) → UEXT/SD.CARD.SS
ARDUINO.D11 → PIN(8) → UEXT/SD.CARD.MOSI
ARDUINO.D12 → PIN(9) → UEXT/SD.CARD.MISO
ARDUINO.D13 → PIN(10) → UEXT/SD.CARD.CLK
NOTES!!
If you use UEXT.SPI or SD-CARD note that the SPI signals also go to ARDUINO.D10-D13.
ARDUINO.D8 is shared with VIDEO.SELECT and UEXT.CS