initial code commit

2020-10-25 19:05:01 +01:00
parent c13b67dce3
commit 1cdb842f41
5 changed files with 453 additions and 0 deletions
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+#include "Arduino.h"
+#include "bombatuino_INPUT_74HC4051.h"
+
+//should be called in setup()
+void INPUT_74HC4051::begin(uint8_t analog, uint8_t s0, uint8_t s1, uint8_t s2,CallbackFunction cbF) {
+	
+	//analog pin which output Z is connected to
+	_analog = analog;
+	
+	//3 digital pins where S0,S1,S2 are connected to
+	_s0 = s0;
+	_s1 = s1;
+	_s2 = s2;
+	
+	
+	pinMode(_analog,INPUT);
+	
+	pinMode(_s0,OUTPUT);
+	pinMode(_s1,OUTPUT);
+	pinMode(_s2,OUTPUT);
+	
+	_callbackFunction = cbF;
+	
+	//initalize start values
+	uint8_t pin,r0,r1,r2;
+	//run through the 8 I/O pins
+	for (pin=0; pin<8; pin++) {
+		r0 = bitRead(pin,0);     
+		r1 = bitRead(pin,1);
+		r2 = bitRead(pin,2);   
+		digitalWrite(_s0, r0);
+		digitalWrite(_s1, r1);
+		digitalWrite(_s2, r2);
+		//delayMicroseconds(10);
+		_value[pin] = analogRead(_analog);
+	}  	
+}
+
+void INPUT_74HC4051::setPins(uint8_t pins) {
+		_pins = pins;
+}
+
+//should be called in loop(), read values and call callback function on change
+void INPUT_74HC4051::loop() {
+	uint8_t pin,r0,r1,r2;
+	int value;
+	for (pin=0; pin<8; pin++) {
+		if (_pins & (1<<pin)) {
+			r0 = bitRead(pin,0);     
+			r1 = bitRead(pin,1);
+			r2 = bitRead(pin,2);   
+			digitalWrite(_s0, r0);
+			digitalWrite(_s1, r1);
+			digitalWrite(_s2, r2);
+			//divide by 8 to get value beetween 0-127 for MIDI
+			value = analogRead(_analog) / 8;
+			if (_value[pin] < value || _value[pin] > value) {
+				_value[pin] = value;
+				(*_callbackFunction)(_analog,pin,value);
+			}
+		}
+	}  	
+}
+
+//maybe useful later
+int INPUT_74HC4051::getSpecificValue(uint8_t pin) {
+	if (pin >= 8 || !(_pins & (1<<pin)))
+		return -1;
+	uint8_t r0,r1,r2;
+	r0 = bitRead(pin,0);     
+	r1 = bitRead(pin,1);
+	r2 = bitRead(pin,2);   
+	digitalWrite(_s0, r0);
+	digitalWrite(_s1, r1);
+	digitalWrite(_s2, r2);
+	//delayMicroseconds(10);
+	int value = analogRead(_analog) / 8;
+	_value[pin] = value;
+	return value;
+}
+
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+/**
+ * @file bombatuino_INPUT_74HC4051.h
+ * 
+ * @author Lukas Haubaum (lukas@haubaum.de)
+ * 
+ * @date February, 2013
+ * 
+ * @brief arduino library for reading inputs from 74HC4051 multiplexer
+ * 
+ * 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
+ * 	
+ * */
+#ifndef bombatuino_INPUT_74HC4051_h
+#define bombatuino_INPUT_74HC4051_h
+
+#if !defined(CallbackFunction)
+/**
+ * callback function
+ * 
+ * @param address
+ * @param pin
+ * @param value
+ */
+typedef void (*CallbackFunction)(int,int,int);
+#endif
+
+class INPUT_74HC4051
+{
+	public:		
+		/**
+		 * initalize the class, should be called in setup() function
+		 * 
+		 * @param analog input pin on arduino, connected Z pin here
+		 * @param digital output pin for S0
+		 * @param digital output pin for S0
+		 * @param digital output pin for S0
+		 * @param callback function
+		 */
+		void begin(uint8_t analog, uint8_t s0, uint8_t s1, uint8_t s2,CallbackFunction cbF);	
+		
+		/**
+		 * Set pins to use as bits (default 0b11111111)
+		 * 
+		 * @param pins to use for input
+		 */
+		void setPins(uint8_t pins);	
+		
+		/**
+		 * read values and call callback function on change, should be called in loop()
+		 */
+		void loop(void);		
+		/**
+		 * get value of specific pin (0-7)
+		 * 
+		 * @param pin
+		 * @return value of pin
+		 */
+		int getSpecificValue(uint8_t pin);
+	private:
+		uint8_t _analog; /**< analog input pin on arduino, connected Z pin here */ 
+		uint8_t _s0; /**< digital output pin for S0 */ 
+		uint8_t _s1; /**< digital output pin for S0 */ 
+		uint8_t _s2; /**< digital output pin for S0 */ 
+		int _value[8]; /**< read values */ 
+		uint8_t _pins = 0b11111111; /**< which pins to read */
+		CallbackFunction _callbackFunction; /**< callback function */ 
+};
+
+
+#endif