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