DIGITAL-LOGIC MICROSPACE MSEP800, Technical User'S Manual

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DIGITAL-LOGIC AG
MSEP800 Manual V1.0G
111
12.2.4 24Bit Digital I/O Interface
Programming MSEP800 interface under Windows:
Please install the driver as described in
chapter 10.1.6
Programming of the Digital IO Interface is supported by resident driver and program examples of IO
operations, based on DeviceIoControl function.
Files:
MSEBXGPioctl.h contains definitions for IO codes.
MSEBXGPf.cpp and MSEBXGPf.h contains examples of subroutines which provide access to Digital IO
Interface via driver.
Functions (MSEBXGPf.cpp and MSEBXGPf.h ):
bool Open_MSEBXGP (void) - the first function, which must be called to create a link between Digital IO
Interface driver and user software. It returns “true”, if device was successfully opened, otherwise - “false”.
void Close_MSEBXGP (void) - the last function, which breaks a link between driver and user software.
void ControlOut(unsigned char addr, unsigned char dat) – function, which set direction of the ports A,B and
C.
To set PORTA as output you have to call ControlOut(1,1), as input ControlOut(1,0);
To set PORTB as output you have to call ControlOut(1,2), as input ControlOut(1,0);
To set PORTC as output you have to call ControlOut(1,4), as input ControlOut(1,0);
Note: Use mask to assign all ports direction, because ControlOut(1,1) set PORTA to output, but PORTB and
PORTC to input. For example: ControlOut(1,7) will set all ports to output.
void DigitalOutA(unsigned char dat); - this function provide digital output to the port 160h.
(DOS = outportb(0x160,b)).
unsigned char DigitalInA(void) - this function provide digital input from the port 160h.
(DOS = inportb(0x160)).
void DigitalOutB(unsigned char dat); - this function provide digital output to the port 260h.
(DOS = outportb(0x260,b)).
unsigned char DigitalInB(void) - this function provide digital input from the port 260h.
(DOS = inportb(0x260)).
void DigitalOutC(unsigned char dat); - this function provide digital output to the port 360h.
(DOS = outportb(0x360,b)).
unsigned char DigitalInC(void) - this function provide digital input from the port 360h.
(DOS = inportb(0x360)).