30 rader
1.1 KiB
C++
30 rader
1.1 KiB
C++
#ifndef SCANNER_IOE_H
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#define SCANNER_IOE_H
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#include <Arduino.h>
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#include <inttypes.h>
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#include <ScannerInterface.h>
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#include <PortInterface.h>
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/* Scanner_IOE uses bit manipulation to read all pins of one port.
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The maximum keys per row is 8, because ports have a maximum of 8 pins each.
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begin() should be called once from sketch setup().
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keybrd_library_developer_guide.md has instructions for ## Active state and diode orientation
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*/
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class Scanner_IOE : public ScannerInterface
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{
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private:
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const bool activeState; //logic level of strobe on, HIGH or LOW
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PortInterface& refPortWrite; //the IC port containing the strobePin
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PortInterface& refPortRead; //the IC's read port
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public:
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Scanner_IOE(const bool activeState, PortInterface &refPortWrite, PortInterface& refPortRead)
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: activeState(activeState), refPortWrite(refPortWrite), refPortRead(refPortRead) {}
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void init(const uint8_t strobePin);
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void begin();
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read_pins_t scan(const uint8_t strobePin);
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};
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#endif
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