Spectra PowerBox 3000A Series, Руководство пользователя

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Spectra GmbH & Co. KG User Manual
sales@spectra.de Spectra PowerBox 3000A
107
5.1.1.4 Sample Code in C Language
5.1.1.4.1 Control of GP74 to GP77 (DI1 ~ DI4)
#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 GP74 to GP77 input Mode
WriteByte(AddrPort, 0x80) // Select configuration register 80h
WriteByte(DataPort, 0x0X) // Set (bit 4~7) = 0 to select GP 74~77 as Input mode.