Emerald-MM-DIO

Digital I/O

Max Ports: 6 8-bit bi-directional ports with programmable direction bit by bit and inverting logic

The first 3 ports have edge detection capability with polarity and enable selected individually for each bit. Edge detection can be utilized by running user interrupts. See functions dscEMMDIOSetState() and dscEMMDIOGetState().

Digital I/O lines on Emerald-MM-DIO do not require configuration. Writing a 0 to any bit drives the pin high and also enables it as an input. Writing a 1 to a bit drives the pin low and forces it to an output.

A high input will read back as a 0, and a low input will readback as a 1.

Interrupts

1 with jumper-selected IRQ level

Serial Ports

4 RS-232 ports with jumper-configured base addresses and IRQ levels.

Serial ports on Emerald-MM-DIO are not supported by Universal Driver.

Emerald-MM-DIO Universal Driver Functions

• dscDIOClearBit()
• dscDIOInputBit()
• dscDIOInputByte()
• dscDIOOutputBit()
• dscDIOOutputByte()
• dscDIOSetBit()
• dscEMMDIOGetState()
• dscEMMDIOResetInt()
• dscEMMDIOSetState()
• dscSetUserInterruptFunction()
• dscClearUserInterruptFunction()
• dscUserInt()