Cinzone DA-1000, Руководство пользователя

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DA-1000 User’s Manual
81
Chapter 5: Product application
5.1.1.4 .2
Control of GP60 to GP63
#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 GP60 to GP63 output Mode
WriteByte(AddrPort, 0x90) // Select configuration register 90h
WriteByte(DataPort, (ReadByte(DataPort) & 0xX F ))
// Set (bit 0~3) = 1 to select GP 60 ~63 as Output mode.
<Output Value>
WriteByte(AddrPort, 0x91)
// Select configuration register 91h
WriteByte(DataPort, Value) // Set bit 0~3=(0/1) to output GP 60~63
as Low or High
<Leave the Extended Function Mode>
WriteByte(AddrPort, 0xAA)