diff options
Diffstat (limited to 'software/main/PCF8575.cpp')
| -rw-r--r-- | software/main/PCF8575.cpp | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/software/main/PCF8575.cpp b/software/main/PCF8575.cpp deleted file mode 100644 index 3308c3b..0000000 --- a/software/main/PCF8575.cpp +++ /dev/null @@ -1,474 +0,0 @@ -/*
- * PCF8575 GPIO Port Expand
- * https://www.mischianti.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2019 Renzo Mischianti www.mischianti.org All right reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "PCF8575.h"
-#include "Wire.h"
-
-/**
- * Constructor
- * @param address: i2c address
- */
-PCF8575::PCF8575(uint8_t address){
- _wire = &Wire;
-
- _address = address;
-};
-
-/**
- * Construcor
- * @param address: i2c address
- * @param interruptPin: pin to set interrupt
- * @param interruptFunction: function to call when interrupt raised
- */
-PCF8575::PCF8575(uint8_t address, uint8_t interruptPin, void (*interruptFunction)() ){
- _wire = &Wire;
-
- _address = address;
- _interruptPin = interruptPin;
- _interruptFunction = interruptFunction;
- _usingInterrupt = true;
-};
-
-#if !defined(__AVR) && !defined(__STM32F1__)
- /**
- * Constructor
- * @param address: i2c address
- * @param sda: sda pin
- * @param scl: scl pin
- */
- PCF8575::PCF8575(uint8_t address, uint8_t sda, uint8_t scl){
- _wire = &Wire;
-
- _address = address;
- _sda = sda;
- _scl = scl;
- };
-
- /**
- * Constructor
- * @param address: i2c address
- * @param sda: sda pin
- * @param scl: scl pin
- * @param interruptPin: pin to set interrupt
- * @param interruptFunction: function to call when interrupt raised
- */
- PCF8575::PCF8575(uint8_t address, uint8_t sda, uint8_t scl, uint8_t interruptPin, void (*interruptFunction)() ){
- _wire = &Wire;
-
- _address = address;
- _sda = sda;
- _scl = scl;
-
- _interruptPin = interruptPin;
- _interruptFunction = interruptFunction;
-
- _usingInterrupt = true;
- };
-#endif
-
-#ifdef ESP32
- /**
- * Constructor
- * @param address: i2c address
- */
- PCF8575::PCF8575(TwoWire *pWire, uint8_t address){
- _wire = pWire;
-
- _address = address;
- };
-
- /**
- * Construcor
- * @param address: i2c address
- * @param interruptPin: pin to set interrupt
- * @param interruptFunction: function to call when interrupt raised
- */
- PCF8575::PCF8575(TwoWire *pWire, uint8_t address, uint8_t interruptPin, void (*interruptFunction)() ){
- _wire = pWire;
-
- _address = address;
- _interruptPin = interruptPin;
- _interruptFunction = interruptFunction;
- _usingInterrupt = true;
- };
-
- /**
- * Constructor
- * @param address: i2c address
- * @param sda: sda pin
- * @param scl: scl pin
- */
- PCF8575::PCF8575(TwoWire *pWire, uint8_t address, uint8_t sda, uint8_t scl){
- _wire = pWire;
-
- _address = address;
- _sda = sda;
- _scl = scl;
- };
-
- /**
- * Constructor
- * @param address: i2c address
- * @param sda: sda pin
- * @param scl: scl pin
- * @param interruptPin: pin to set interrupt
- * @param interruptFunction: function to call when interrupt raised
- */
- PCF8575::PCF8575(TwoWire *pWire, uint8_t address, uint8_t sda, uint8_t scl, uint8_t interruptPin, void (*interruptFunction)() ){
- _wire = pWire;
-
- _address = address;
- _sda = sda;
- _scl = scl;
-
- _interruptPin = interruptPin;
- _interruptFunction = interruptFunction;
-
- _usingInterrupt = true;
- };
-#endif
-
-/**
- * wake up i2c controller
- */
-void PCF8575::begin(){
- #if !defined(__AVR) && !defined(__STM32F1__)
- _wire->begin(_sda, _scl);
- #else
- // Default pin for AVR some problem on software emulation
- // #define SCL_PIN _scl
- // #define SDA_PIN _sda
- _wire->begin();
- #endif
-
-// Serial.println( writeMode, BIN);
-// Serial.println( readMode, BIN);
-
- // Check if there are pins to set low
- if (writeMode>0 || readMode>0){
- DEBUG_PRINTLN("Set write mode");
- _wire->beginTransmission(_address);
- DEBUG_PRINT(" ");
- DEBUG_PRINT("usedPin pin ");
-
-
- uint16_t usedPin = writeMode | readMode;
- DEBUG_PRINTLN( ~usedPin, BIN);
-// Serial.println( ~usedPin, BIN);
-
- _wire->write((uint8_t) ~usedPin);
- _wire->write((uint8_t) (~(usedPin >> 8)));
-
- DEBUG_PRINTLN("Start end trasmission if stop here check pullup resistor.");
- _wire->endTransmission();
- }
-
- // If using interrupt set interrupt value to pin
- if (_usingInterrupt){
- DEBUG_PRINTLN("Using interrupt pin (not all pin is interrupted)");
- ::pinMode(_interruptPin, INPUT_PULLUP);
- attachInterrupt(digitalPinToInterrupt(_interruptPin), (*_interruptFunction), FALLING );
- }
-
- // inizialize last read
- lastReadMillis = millis();
-}
-
-/**
- * Set if fin is OUTPUT or INPUT
- * @param pin: pin to set
- * @param mode: mode, supported only INPUT or OUTPUT (to semplify)
- */
-void PCF8575::pinMode(uint8_t pin, uint8_t mode){
- DEBUG_PRINT("Set pin ");
- DEBUG_PRINT(pin);
- DEBUG_PRINT(" as ");
- DEBUG_PRINTLN(mode);
-
- if (mode == OUTPUT){
- writeMode = writeMode | bit(pin);
- readMode = readMode & ~bit(pin);
-// DEBUG_PRINT("writeMode: ");
-// DEBUG_PRINT(writeMode, BIN);
-// DEBUG_PRINT("readMode: ");
-// DEBUG_PRINTLN(readMode, BIN);
-
- }else if (mode == INPUT){
- writeMode = writeMode & ~bit(pin);
- readMode = readMode | bit(pin);
-// DEBUG_PRINT("writeMode: ");
-// DEBUG_PRINT(writeMode, BIN);
-// DEBUG_PRINT("readMode: ");
-// DEBUG_PRINTLN(readMode, BIN);
- }
- else{
- DEBUG_PRINTLN("Mode non supported by PCF8575")
- }
- DEBUG_PRINT("Write mode: ");
- DEBUG_PRINTLN(writeMode, BIN);
-
-};
-
-/**
- * Read value from i2c and bufferize it
- * @param force
- */
-void PCF8575::readBuffer(bool force){
- if (millis() > PCF8575::lastReadMillis+READ_ELAPSED_TIME || _usingInterrupt || force){
- _wire->requestFrom(_address,(uint8_t)2);// Begin transmission to PCF8575 with the buttons
- lastReadMillis = millis();
- if(_wire->available()) // If uint16_ts are available to be recieved
- {
- uint16_t iInput = _wire->read();// Read a uint16_t
- iInput |= _wire->read() << 8;// Read a uint16_t
- if ((iInput & readMode)>0){
- byteBuffered = byteBuffered | (uint16_t)iInput;
- }
- }
- }
-}
-
-#ifndef PCF8575_LOW_MEMORY
- /**
- * Read value of all INPUT pin
- * Debounce read more fast than 10millis, non managed for interrupt mode
- * @return
- */
- PCF8575::DigitalInput PCF8575::digitalReadAll(void){
- DEBUG_PRINTLN("Read from buffer");
- _wire->requestFrom(_address,(uint8_t)2);// Begin transmission to PCF8575 with the buttons
- lastReadMillis = millis();
- if(_wire->available()) // If uint16_ts are available to be recieved
- {
- DEBUG_PRINTLN("Data ready");
- uint16_t iInput = _wire->read();// Read a uint16_t
- iInput |= _wire->read() << 8;// Read a uint16_t
-
- if ((iInput & readMode)>0){
- DEBUG_PRINT("Input ");
- DEBUG_PRINTLN((uint16_t)iInput, BIN);
-
- byteBuffered = byteBuffered | (uint16_t)iInput;
- DEBUG_PRINT("byteBuffered ");
- DEBUG_PRINTLN(byteBuffered, BIN);
- }
- }
-
- DEBUG_PRINT("Buffer value ");
- DEBUG_PRINTLN(byteBuffered, BIN);
-#ifdef NOT_SEQUENTIAL_PINOUT
- if ((bit(0) & readMode)>0) digitalInput.p00 = ((byteBuffered & bit(0))>0)?HIGH:LOW;
- if ((bit(1) & readMode)>0) digitalInput.p01 = ((byteBuffered & bit(1))>0)?HIGH:LOW;
- if ((bit(2) & readMode)>0) digitalInput.p02 = ((byteBuffered & bit(2))>0)?HIGH:LOW;
- if ((bit(3) & readMode)>0) digitalInput.p03 = ((byteBuffered & bit(3))>0)?HIGH:LOW;
- if ((bit(4) & readMode)>0) digitalInput.p04 = ((byteBuffered & bit(4))>0)?HIGH:LOW;
- if ((bit(5) & readMode)>0) digitalInput.p05 = ((byteBuffered & bit(5))>0)?HIGH:LOW;
- if ((bit(6) & readMode)>0) digitalInput.p06 = ((byteBuffered & bit(6))>0)?HIGH:LOW;
- if ((bit(7) & readMode)>0) digitalInput.p07 = ((byteBuffered & bit(7))>0)?HIGH:LOW;
- if ((bit(8) & readMode)>0) digitalInput.p10 = ((byteBuffered & bit(8))>0)?HIGH:LOW;
- if ((bit(9) & readMode)>0) digitalInput.p11 = ((byteBuffered & bit(9))>0)?HIGH:LOW;
- if ((bit(10) & readMode)>0) digitalInput.p12 = ((byteBuffered & bit(10))>0)?HIGH:LOW;
- if ((bit(11) & readMode)>0) digitalInput.p13 = ((byteBuffered & bit(11))>0)?HIGH:LOW;
- if ((bit(12) & readMode)>0) digitalInput.p14 = ((byteBuffered & bit(12))>0)?HIGH:LOW;
- if ((bit(13) & readMode)>0) digitalInput.p15 = ((byteBuffered & bit(13))>0)?HIGH:LOW;
- if ((bit(14) & readMode)>0) digitalInput.p16 = ((byteBuffered & bit(14))>0)?HIGH:LOW;
- if ((bit(15) & readMode)>0) digitalInput.p17 = ((byteBuffered & bit(15))>0)?HIGH:LOW;
-#else
- if ((bit(0) & readMode)>0) digitalInput.p0 = ((byteBuffered & bit(0))>0)?HIGH:LOW;
- if ((bit(1) & readMode)>0) digitalInput.p1 = ((byteBuffered & bit(1))>0)?HIGH:LOW;
- if ((bit(2) & readMode)>0) digitalInput.p2 = ((byteBuffered & bit(2))>0)?HIGH:LOW;
- if ((bit(3) & readMode)>0) digitalInput.p3 = ((byteBuffered & bit(3))>0)?HIGH:LOW;
- if ((bit(4) & readMode)>0) digitalInput.p4 = ((byteBuffered & bit(4))>0)?HIGH:LOW;
- if ((bit(5) & readMode)>0) digitalInput.p5 = ((byteBuffered & bit(5))>0)?HIGH:LOW;
- if ((bit(6) & readMode)>0) digitalInput.p6 = ((byteBuffered & bit(6))>0)?HIGH:LOW;
- if ((bit(7) & readMode)>0) digitalInput.p7 = ((byteBuffered & bit(7))>0)?HIGH:LOW;
- if ((bit(8) & readMode)>0) digitalInput.p8 = ((byteBuffered & bit(8))>0)?HIGH:LOW;
- if ((bit(9) & readMode)>0) digitalInput.p9 = ((byteBuffered & bit(9))>0)?HIGH:LOW;
- if ((bit(10) & readMode)>0) digitalInput.p10 = ((byteBuffered & bit(10))>0)?HIGH:LOW;
- if ((bit(11) & readMode)>0) digitalInput.p11 = ((byteBuffered & bit(11))>0)?HIGH:LOW;
- if ((bit(12) & readMode)>0) digitalInput.p12 = ((byteBuffered & bit(12))>0)?HIGH:LOW;
- if ((bit(13) & readMode)>0) digitalInput.p13 = ((byteBuffered & bit(13))>0)?HIGH:LOW;
- if ((bit(14) & readMode)>0) digitalInput.p14 = ((byteBuffered & bit(14))>0)?HIGH:LOW;
- if ((bit(15) & readMode)>0) digitalInput.p15 = ((byteBuffered & bit(15))>0)?HIGH:LOW;
-#endif
- if ((readMode & byteBuffered)>0){
- byteBuffered = ~readMode & byteBuffered;
- DEBUG_PRINT("Buffer hight value readed set readed ");
- DEBUG_PRINTLN(byteBuffered, BIN);
- }
- DEBUG_PRINT("Return value ");
- return digitalInput;
- };
-#else
- /**
- * Read value of all INPUT pin in byte format for low memory usage
- * Debounce read more fast than 10millis, non managed for interrupt mode
- * @return
- */
- uint16_t PCF8575::digitalReadAll(void){
- DEBUG_PRINTLN("Read from buffer");
- _wire->requestFrom(_address,(uint8_t)2);// Begin transmission to PCF8575 with the buttons
- lastReadMillis = millis();
- if(_wire->available()) // If uint16_ts are available to be recieved
- {
- DEBUG_PRINTLN("Data ready");
- uint16_t iInput = _wire->read();// Read a uint16_t
- iInput |= _wire->read() << 8;// Read a uint16_t
-
- if ((iInput & readMode)>0){
- DEBUG_PRINT("Input ");
- DEBUG_PRINTLN((uint16_t)iInput, BIN);
-
- byteBuffered = byteBuffered | (uint16_t)iInput;
- DEBUG_PRINT("byteBuffered ");
- DEBUG_PRINTLN(byteBuffered, BIN);
- }
- }
-
- DEBUG_PRINT("Buffer value ");
- DEBUG_PRINTLN(byteBuffered, BIN);
-
- uint16_t byteRead = byteBuffered;
-
- if ((readMode & byteBuffered)>0){
- byteBuffered = ~readMode & byteBuffered;
- DEBUG_PRINT("Buffer hight value readed set readed ");
- DEBUG_PRINTLN(byteBuffered, BIN);
- }
- DEBUG_PRINT("Return value ");
- return byteRead;
- };
-#endif
-
-/**
- * Read value of specified pin
- * Debounce read more fast than 10millis, non managed for interrupt mode
- * @param pin
- * @return
- */
-uint8_t PCF8575::digitalRead(uint8_t pin){
- uint8_t value = LOW;
- if ((bit(pin) & writeMode)>0){
- DEBUG_PRINTLN("Pin in write mode, return value");
- DEBUG_PRINT("Write data ");
- DEBUG_PRINT(writeByteBuffered, BIN);
- DEBUG_PRINT(" for pin ");
- DEBUG_PRINT(pin);
- DEBUG_PRINT(" bin value ");
- DEBUG_PRINT(bit(pin), BIN);
- DEBUG_PRINT(" value ");
- DEBUG_PRINTLN(value);
-
- if ((bit(pin) & writeByteBuffered)>0){
- value = HIGH;
- }else{
- value = LOW;
- }
- return value;
- }
-
- DEBUG_PRINT("Read pin ");
- DEBUG_PRINTLN(pin);
- // Check if pin already HIGH than read and prevent reread of i2c
- if ((bit(pin) & byteBuffered)>0){
- DEBUG_PRINTLN("Pin already up");
- value = HIGH;
- }else if ((/*(bit(pin) & byteBuffered)<=0 && */millis() > PCF8575::lastReadMillis+READ_ELAPSED_TIME) /*|| _usingInterrupt*/){
- DEBUG_PRINTLN("Read from buffer");
- _wire->requestFrom(_address,(uint8_t)2);// Begin transmission to PCF8575 with the buttons
- lastReadMillis = millis();
- if(_wire->available()) // If bytes are available to be recieved
- {
- DEBUG_PRINTLN("Data ready");
- uint16_t iInput = _wire->read();// Read a uint16_t
- iInput |= _wire->read() << 8;// Read a uint16_t
-
-// Serial.println(iInput, BIN);
-
- if ((iInput & readMode)>0){
- DEBUG_PRINT("Input ");
- DEBUG_PRINTLN((uint16_t)iInput, BIN);
-
- byteBuffered = byteBuffered | (uint16_t)iInput;
- DEBUG_PRINT("byteBuffered ");
- DEBUG_PRINTLN(byteBuffered, BIN);
-
- if ((bit(pin) & byteBuffered)>0){
- value = HIGH;
- }
- }
- }
- }
- DEBUG_PRINT("Buffer value ");
- DEBUG_PRINTLN(byteBuffered, BIN);
- // If HIGH set to low to read buffer only one time
- if (value==HIGH){
- byteBuffered = ~bit(pin) & byteBuffered;
- DEBUG_PRINT("Buffer hight value readed set readed ");
- DEBUG_PRINTLN(byteBuffered, BIN);
- }
- DEBUG_PRINT("Return value ");
- DEBUG_PRINTLN(value);
- return value;
-};
-
-/**
- * Write on pin
- * @param pin
- * @param value
- */
-void PCF8575::digitalWrite(uint8_t pin, uint8_t value){
- DEBUG_PRINTLN("Begin trasmission");
- _wire->beginTransmission(_address); //Begin the transmission to PCF8575
- if (value==HIGH){
- writeByteBuffered = writeByteBuffered | bit(pin);
- }else{
- writeByteBuffered = writeByteBuffered & ~bit(pin);
- }
-// DEBUG_PRINT("Write data ");
-// DEBUG_PRINT(writeByteBuffered, BIN);
-// DEBUG_PRINT(" for pin ");
-// DEBUG_PRINT(pin);
-// DEBUG_PRINT(" bin value ");
-// DEBUG_PRINT(bit(pin), BIN);
-// DEBUG_PRINT(" value ");
-// DEBUG_PRINTLN(value);
-
-// Serial.print(" --> ");
-// Serial.println(writeByteBuffered);
-// Serial.println((uint8_t) writeByteBuffered);
-// Serial.println((uint8_t) (writeByteBuffered >> 8));
-
- writeByteBuffered = writeByteBuffered & writeMode;
- _wire->write((uint8_t) writeByteBuffered);
- _wire->write((uint8_t) (writeByteBuffered >> 8));
- DEBUG_PRINTLN("Start end trasmission if stop here check pullup resistor.");
-
- _wire->endTransmission();
-};
-
-
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