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[Properties (by Name)] [Methods (by Name)] [Events (by Name)]
Abstract base controller for MCP23017 and MCP23S17
Source position: mcp23017.pas line 50
type TMCP23X17Controller = class(TObject) |
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protected |
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function GetRegisterValue(); virtual; abstract; |
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Abstract value retrival method |
procedure SetRegisterValue(); virtual; abstract; |
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Abstract register value setter |
constructor Create; virtual; |
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New instance |
public |
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property IODIRA: Byte; [rw] |
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Input/Output Direction - Port A |
property IPOLA: Byte; [rw] |
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Input Polarity - Port A |
property GPINTENA: Byte; [rw] |
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Interrupt Enable - Port A |
property DEFVALA: Byte; [rw] |
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Default Value for interrupt condition - Port A |
property INTCONA: Byte; [rw] |
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Interrupt Condition - Port A |
property IOCONA: Byte; [rw] |
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Input/Output Configuration |
property GPPUA: Byte; [rw] |
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Pull Up resitors - Port A |
property INTFA: Byte; [r] |
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Interrupt Flag - Port A |
property INTCAPA: Byte; [r] |
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Interrupt Capture - Port A |
property GPIOA: Byte; [rw] |
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GPIO values - Port A |
property OLATA: Byte; [rw] |
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Output Latches - Port A |
property IODIRB: Byte; [rw] |
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Input/Output Direction - Port B |
property IPOLB: Byte; [rw] |
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Input Polarity - Port B |
property GPINTENB: Byte; [rw] |
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Interrupt Enable - Port A |
property DEFVALB: Byte; [rw] |
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Default Value for interrupt condition - Port B |
property INTCONB: Byte; [rw] |
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Interrupt Condition - Port A |
property IOCONB: Byte; [rw] |
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Input/Output Configuration |
property GPPUB: Byte; [rw] |
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Pull Up resitors - Port B |
property INTFB: Byte; [r] |
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Interrupt Flag - Port B |
property INTCAPB: Byte; [r] |
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Interrupt Capture - Port B |
property GPIOB: Byte; [rw] |
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GPIO values - Port B |
property OLATB: Byte; [rw] |
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Output Latches - Port B |
property IOCON: Byte; [rw] |
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Input/Output Configuration |
property BANK: Boolean; [rw] |
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BANK mode |
property MIRROR: Boolean; [rw] |
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Mirror Interrupt |
property SEQOP: Boolean; [rw] |
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Sequential Operation |
property DISSLW: Boolean; [rw] |
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Slew Rate |
property HAEN: Boolean; [rw] |
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Hardware Address Enable |
property ODR: Boolean; [rw] |
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Open Drain for interrupt pins |
property INTPOL: Boolean; [rw] |
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Interrupt Polarity |
property Address: Byte; [r] |
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Chip address |
property OwnsDevice: Boolean; [rw] |
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Free Device on destruction |
end; |
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Abstract base controller for MCP23017 and MCP23S17 |
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TObject |
Provides an abstract interface for accessing MCP23017 and MCP23S17 following their internal registers. Use this class only if you need direct access to the internal registers. Otherwise use TMCP23017 or TMCP23S17 from unit gpioexp.
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Accessing MCP23017 using I2C device |
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Accessing MCP23S17 using SPI device |