added libraries and clean up
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@ -1,13 +1,18 @@
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#include "Arduino.h"
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#include "INPUT_74HC4051.h"
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//should be called in setup()
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void INPUT_74HC4051::begin(uint8_t analog, uint8_t s0, uint8_t s1, uint8_t s2,CallbackFunction cbF) {
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//analog pin which output Z is connected to
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_analog = analog;
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//3 digital pins where S0,S1,S2 are connected to
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_s0 = s0;
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_s1 = s1;
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_s2 = s2;
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pinMode(_analog,INPUT);
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pinMode(_s0,OUTPUT);
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@ -16,8 +21,9 @@ void INPUT_74HC4051::begin(uint8_t analog, uint8_t s0, uint8_t s1, uint8_t s2,Ca
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_callbackFunction = cbF;
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//init start values
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//initalize start values
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uint8_t pin,r0,r1,r2;
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//run through the 8 I/O pins
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for (pin=0; pin<8; pin++) {
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r0 = bitRead(pin,0);
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r1 = bitRead(pin,1);
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@ -30,6 +36,7 @@ void INPUT_74HC4051::begin(uint8_t analog, uint8_t s0, uint8_t s1, uint8_t s2,Ca
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}
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}
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//should be called in loop(), read values and call callback function on change
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void INPUT_74HC4051::loop() {
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uint8_t pin,r0,r1,r2;
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int value;
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@ -40,6 +47,7 @@ void INPUT_74HC4051::loop() {
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digitalWrite(_s0, r0);
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digitalWrite(_s1, r1);
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digitalWrite(_s2, r2);
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//not sure if nessesary
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//delayMicroseconds(10);
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value = analogRead(_analog);
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if (_value[pin] < value - INPUT_74HC4051_TOLERANCE || _value[pin] > value + INPUT_74HC4051_TOLERANCE) {
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@ -49,6 +57,7 @@ void INPUT_74HC4051::loop() {
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}
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}
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//maybe useful later
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int INPUT_74HC4051::getSpecificValue(uint8_t pin) {
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if (pin >= 8)
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return -1;
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@ -1,5 +1,8 @@
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/*
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INPUT_4051.h - Library for reading inputs from 4051 multiplexer
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INPUT_72HC4051.h - Library for reading inputs from 74HC4051 multiplexer
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library is for specialiced use: all I/O ports are used as analog inputs, values are stored and a callback function is called, when a value changes
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*/
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#ifndef INPUT_74HC4051_h
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#define INPUT_74HC4051_h
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@ -12,7 +12,7 @@ void INPUT_MCP23017::begin(uint8_t addr,CallbackFunction cbF) {
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_callbackFunction = cbF;
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// set defaults!
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//set all ports as inputs
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Wire.beginTransmission(MCP23017_ADDRESS | _addr);
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Wire.write((byte)MCP23017_IODIRA);
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Wire.write(0xFF); // all inputs on port A
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@ -23,7 +23,7 @@ void INPUT_MCP23017::begin(uint8_t addr,CallbackFunction cbF) {
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Wire.write(0xFF); // all inputs on port B
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Wire.endTransmission();
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//activate pullup resistors
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Wire.beginTransmission(MCP23017_ADDRESS | _addr);
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Wire.write(MCP23017_GPPUA);
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Wire.write(0xFF); // all pullup resistors on port A
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@ -34,6 +34,7 @@ void INPUT_MCP23017::begin(uint8_t addr,CallbackFunction cbF) {
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Wire.write(0xFF); // all pullup resistors on port B
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Wire.endTransmission();
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//inverse all inputs
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Wire.beginTransmission(MCP23017_ADDRESS | _addr);
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Wire.write((byte)MCP23017_IPOLA);
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Wire.write(0xFF); // inverse all inputs
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@ -95,6 +96,7 @@ void INPUT_MCP23017::loop() {
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}
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}
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//maybe useful later
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int INPUT_MCP23017::getSpecificValue(uint8_t pin) {
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if (pin > 16)
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return LOW;
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@ -1,5 +1,9 @@
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/*
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INPUT_MCP23017.h - Library for reading inputs from MCP23017 port Expander
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library is for specialiced use: all I/O ports are used as digital inputs with internal pullup resistor active, values are stored and a callback function is called, when a value changes
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*/
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*/
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#ifndef INPUT_MCP23017_h
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#define INPUT_MCP23017_h
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