Spectra Powerbox 110 Series, User Manual, Page: 69 / 86

Spectra GmbH & Co. KG
vertrieb@spectra.de
User Manual
Spectra PowerBox 110 Series
Version 1.1
April 2019
69
5.1.1.4 Sample Code in C Language
5.1.1.4 .1 Control of GP54 to GP57
#define AddrPort 0x4E
#define DataPort 0x4F
<Enter the Extended Function Mode>
WriteByte(AddrPort, 0x87)
WriteByte(AddrPort, 0x87)
// Must write twice to enter Extended mode
<Select Logic Device>
WriteByte(AddrPort, 0x07)
WriteByte(
data Port, 0x06) // Select logic device 06h
<Output/Input Mode Selection> // Set GP54 to GP57 input Mode
WriteByte(AddrPort, 0xA0) // Select configuration register A0h
Write Byte(DataPort, (ReadByte(DataPort)
ǀ
0x0X ))
// Set (bit 4~7) = 0 to select GP 54~57 as
Input mode.
< Input Value>
WriteByte(AddrPort, 0xA1) // Select configuration register A1h
Read Byte(DataPort, Value) // Read bit 4~7 (0xFx)= GP54 ~57 as High.
<Leave the Extended Function Mode>
WriteByte(AddrPort, 0xAA)