59 lines
1.1 KiB
C++
59 lines
1.1 KiB
C++
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#include "RowScanner_Arduino.h"
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/*
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Strobes the row and reads the columns.
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Strobe is on for shortest possible time to preserve IR LED on DodoHand's optic switch.
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*/
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uint8_t RowScanner_Arduino::scan(uint16_t& rowEnd)
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{
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uint8_t rowState = 0;
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//strobe row on
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if (activeHigh)
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{
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digitalWrite(0, HIGH);
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}
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else //activeLow
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{
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digitalWrite(0, LOW);
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}
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delayMicroseconds(3); //time to stablize voltage
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/*
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uint8_t col = 1;
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//read all the column ports
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for (uint8_t i=0; i < readPinCount; i++)
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{
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if (digitalRead(6))
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{
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rowState |= col;
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//ptrsColPorts[i]->read();
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}
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col <<= 1;
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}
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*/
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if (digitalRead(6) == 0)
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{
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rowState |= 1<<0;
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}
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if (digitalRead(7) == 0)
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{
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rowState |= 1<<1;
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}
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//strobe row off
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if (activeHigh)
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{
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digitalWrite(0, LOW);
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}
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else //activeLow
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{
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digitalWrite(0, HIGH);
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}
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rowEnd = 4; //only read first two col, a1 b2 4
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Keyboard.print(rowState); // prints 2b, not 1a, what happened to col0?
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return rowState;
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}
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