Appendix B: Gpi/O Programming Guide - Nexcom NISE 3520 Series User Manual

Appendix B: GPI/O Programming Guide

Appendix B: GPI/O Programming Guide
GPI/O (General Purpose Input/Output) pins are provided for custom system
design. This appendix provides definitions and its default setting for the
ten GPI/O pins in the NISE3500 series. The pin definition is shown in the
following table:
Pin GPI/O PowerOn Address
No. mode Default
1 VCC - -
3 GPO Low 3E4h (Bit4) 4
5 GPO Low 3E4h (Bit5) 6
7 GPO Low 3E4h (Bit6) 8
9 GPO Low 3E4h (Bit7) 10
JP2 – GPI/O Connector
Control the GPO pin (3/5/7/9) level from I/O port 3E4h bit (4/5/6/7).
The bit is Set/Clear indicated output High/Low
Copyright © 2013 NEXCOM International Co., Ltd. All Rights Reserved.
Pin GPI/O PowerOn Address
No. mode Default
2 GND - -
GPI High 3E4h (Bit0)
GPI High 3E4h (Bit1)
GPI High 3E4h (Bit2)
GPI High 3E4h (Bit3)
GPIO programming sample code
#define GPIO_PORT 0x3E4
#define GPO3 (0x01 << 4)
#define GPO5 (0x01 << 5)
#define GPO7 (0x01 << 6)
#define GPO9 (0x01 << 7)
#define GPO3_HI outportb(GPIO_PORT, 0x10)
#define GPO3_LO outportb(GPIO_PORT, 0x00)
#define GPO5_HI outportb(GPIO_PORT, 0x20)
#define GPO5_LO outportb(GPIO_PORT, 0x00)
#define GPO7_HI outportb(GPIO_PORT, 0x40)
#define GPO7_LO outportb(GPIO_PORT, 0x00)
#define GPO9_HI outportb(GPIO_PORT, 0x80)
#define GPO9_LO outportb(GPIO_PORT, 0x00)
void main(void)
{
GPO3_HI;
GPO5_LO;
GPO7_HI;
GPO9_LO;
}
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NISE 3500, NISE 3500M User Manual