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- #ifndef COLPORT_AVR_H
- #define COLPORT_AVR_H
- #include <Arduino.h>
- #include <inttypes.h>
- #include <ColPort.h>
-
- /* One AVR microcontroller port connected to matrix columns.
-
- Instantiation
- ------------
- The constructor configures column's DDRx and PORTx.
- The 'x' in parameters DDRx, PORTx, and PINx should all be the same letter.
-
- colPins is port's bitwise pin configuration
- 1=configure as input (for pins connected to column)
- 0=configure as output (for LED or not connected to a column)
-
- Example instantiation on column port B, with pins 2 and 3 connected to columns:
- ColPort_AVR colPortB(DDRB, PORTB, PINB, 1<<2 | 1<<3 );
-
- colPins are read from pin 0 on up.
-
- Diode orientation
- ----------------
- Rows, columns, and diode orientation are explained in Matrix.h
- */
- class ColPort_AVR : public ColPort
- {
- private:
- const volatile unsigned char& DDR; //Data Direction Register, Direction: 0=Input
- const volatile unsigned char& PORT; //PORT register
- const volatile unsigned char& PIN; //PIN read register
- public:
- //The constructor initialization list is in .cpp
- ColPort_AVR(volatile unsigned char& DDRx, volatile unsigned char& PORTx,
- volatile unsigned char& PINx, const uint8_t colPins);
-
- //read port and store result in portState
- virtual void read();
- };
- #endif
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