38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
#ifndef LED_PORT_H
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#define LED_PORT_H
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#include <Arduino.h>
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#include <inttypes.h>
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#include <LEDInterface.h>
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#include <PortWriteInterface.h>
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/* An LED_Port object is an I/O expander output pin that is connected to an LED indicator light.
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LED_Port functions turn LED on and off.
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LED anode connected to ouput pin. LED cathode grounded.
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This class is for push-pull ouput pins.
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For LEDs connected to open drain output types, use LED_Port class.
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Example initialization:
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const uint8_t IOE_ADDR = 0x20;
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Port_MCP23S17 portA(IOE_ADDR, 0, 1<<0 | 1<<1 );
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LED_Port LED_fn(portA, 1<<5);
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Example initialization:
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Port_ShiftRegs shiftRegs(8);
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LED_Port LED_fn(shiftRegs, 1<<6);
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*/
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class LED_Port : public LEDInterface
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{
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private:
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PortWriteInterface& refPort;
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const uint8_t pin; //bit pattern, 1 is pin connected to LED
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public:
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LED_Port(PortWriteInterface& refPort, const uint8_t pin)
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: refPort(refPort), pin(pin) {}
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virtual void on();
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virtual void off();
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};
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#endif
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