Spectra PowerBox 310 Series, User Manual, Page: 72 / 116

Spectra GmbH & Co. KG User Manual
sales@spectra.de Spectra PowerBox 310 72
5.1.1.4 Sample Code in C Language
5.1.1.4.1 Control of GP30 to GP37 (DI1 ~ DI8)
#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(dataPort, 0x06) // Select logic device 06h
<Output/Input Mode Selection> // Set GP30 to GP37 input Mode
WriteByte(AddrPort, 0xC0) // Select configuration register C0h
WriteByte(DataPort, 0x00) // Set (bit 0~7) = 0 to select GP 30~37 as Input mode.
<Input Value>
WriteByte(AddrPort, 0xC2) // Select configuration register C2h
ReadByte(DataPort, Value) // Assume read (bit 0~7) to Value is FFh , thus GP30 ~37 are all high.
// Assume read (bit 0~7) to Value is 00h , thus GP30 ~37 are all low.
// Read Value range: 00h~FFh
<Leave the Extended Function Mode>
WriteByte(AddrPort, 0xAA)