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60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
//
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// FILE: PinInGroup.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.1
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// DATE: 2017-04-26
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// PURPOSE: PinInGroup library for Arduino
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// goal is to easily read a group of pins that logically
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// belong to each other.
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// The pins can be in any order.
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// URL: https://github.com/RobTillaart/PinInGroup
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// http://forum.arduino.cc/index.php?topic=469599.0
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//
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// 0.1.0 2017-08-20 initial version (based upon pinGroup)
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// 0.1.1 2020-05-19 refactor; added clear(); added param for INPUT or INPUT_PULLUP
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#include "PinInGroup.h"
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PinInGroup::PinInGroup()
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{
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clear();
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}
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void PinInGroup::clear()
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{
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_size = 0;
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}
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uint8_t PinInGroup::add(uint8_t sz, uint8_t * ar, uint8_t value)
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{
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int n = 0;
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for (uint8_t i = 0; i < sz; i++)
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{
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n += add(ar[i], value);
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}
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return n;
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}
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uint8_t PinInGroup::add(uint8_t pin, uint8_t value)
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{
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if (_size >= PININGROUP_MAXSIZE) return 0;
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_pins[_size] = pin;
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pinMode(pin, value);
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_size++;
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return 1;
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}
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uint16_t PinInGroup::read()
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{
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uint16_t value = 0;
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uint16_t mask = 0x01;
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for (uint8_t i = 0; i < _size; i++)
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{
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if (digitalRead(_pins[i])) value |= mask;
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mask <<= 1;
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}
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return value;
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}
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// --- END OF FILE ---
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