C&T Solution CT-PBT01 Series, Руководство пользователя

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CT-PBT01 | User’s Manual
46
GPIO
GPIO Setting
#define GPIO_ADDR 0xA4Bh
//Example1: read input pin
// IO 0xA4Bh is Pin Status(default 0x0F )(at GPIO0~ GPIO3)
ByteData = ReadByte (GPIO_ADDR) //Read current Pin Status
//Example2 : Write output pin
//IO 0xA4Bh default setting is 0x0F (output pin default is Low) (at GPIO4~ GPIO7)
ByteData = 0xF0 //set GPIO4~ GPIO7 to high
WriteByte (GPIO_ADDR, ByteData)
Appendix – WDT & GPIO
GPIO7 I/O 0xA4Bh Bit7 Default output
GPIO6 I/O 0xA4Bh Bit6 Default output
GPIO5 I/O 0xA4Bh Bit5 Default output
GPIO4 I/O 0xA4Bh Bit4 Default output
GPIO3 I/O 0xA4Bh Bit3 Default input
GPIO2 I/O 0xA4Bh Bit2 Default input
GPIO1 I/O 0xA4Bh Bit1 Default input
GPIO0 I/O 0xA4Bh Bit0 Default input