mirror of
https://github.com/xreef/PCF8574_library.git
synced 2024-08-30 18:12:18 +00:00
Interrupt management
This commit is contained in:
Renzo Mischianti
parent
c3b5ad65a1
commit
64772d744f
108
PCF8574.cpp
108
PCF8574.cpp
@ -151,6 +151,34 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
|
||||
_usingInterrupt = true;
|
||||
};
|
||||
#endif
|
||||
bool encoderPins[8];
|
||||
|
||||
void PCF8574::attachInterrupt(){
|
||||
// If using interrupt set interrupt value to pin
|
||||
if (_usingInterrupt){
|
||||
for (int i = 0; i < 8;i++){
|
||||
if (encoderPins[i]) PCF8574::digitalRead(i);
|
||||
}
|
||||
// PCF8574::digitalReadAll();
|
||||
// (*_interruptFunction)();
|
||||
|
||||
// DEBUG_PRINTLN("Using interrupt pin (not all pin is interrupted)");
|
||||
// ::pinMode(_interruptPin, INPUT_PULLUP);
|
||||
// attachInterrupt(digitalPinToInterrupt(_interruptPin), (*_interruptFunction), FALLING );
|
||||
DEBUG_PRINTLN("Using interrupt pin (not all pin is interrupted)");
|
||||
::pinMode(_interruptPin, INPUT_PULLUP);
|
||||
::attachInterrupt(digitalPinToInterrupt(_interruptPin), (*_interruptFunction), FALLING );
|
||||
}
|
||||
|
||||
}
|
||||
void PCF8574::detachInterrupt(){
|
||||
// If using interrupt set interrupt value to pin
|
||||
if (_usingInterrupt){
|
||||
::detachInterrupt(digitalPinToInterrupt(_interruptPin));
|
||||
DEBUG_PRINTLN("Detach interrupt pin");
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* wake up i2c controller
|
||||
@ -184,15 +212,19 @@ void PCF8574::begin(){
|
||||
_wire->endTransmission();
|
||||
}
|
||||
|
||||
// If using interrupt set interrupt value to pin
|
||||
if (_usingInterrupt){
|
||||
// // 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 );
|
||||
// DEBUG_PRINTLN("Using interrupt pin (not all pin is interrupted)");
|
||||
// ::pinMode(_interruptPin, INPUT_PULLUP);
|
||||
// attachInterrupt(digitalPinToInterrupt(_interruptPin), (*_interruptFunction), FALLING );
|
||||
DEBUG_PRINTLN("Using interrupt pin (not all pin is interrupted)");
|
||||
::pinMode(_interruptPin, INPUT_PULLUP);
|
||||
attachInterrupt(digitalPinToInterrupt(_interruptPin), (*_interruptFunction), FALLING );
|
||||
}
|
||||
// ::attachInterrupt(digitalPinToInterrupt(_interruptPin), (*_interruptFunction), FALLING );
|
||||
// }
|
||||
|
||||
|
||||
|
||||
PCF8574::attachInterrupt();
|
||||
|
||||
// inizialize last read
|
||||
lastReadMillis = millis();
|
||||
@ -268,9 +300,13 @@ void PCF8574::pinMode(uint8_t pin, uint8_t mode, uint8_t output_start){
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
void PCF8574::encoder(uint8_t pinA, uint8_t pinB){
|
||||
PCF8574::pinMode(pinA, INPUT_PULLUP);
|
||||
PCF8574::pinMode(pinB, INPUT_PULLUP);
|
||||
|
||||
encoderPins[pinA] = true;
|
||||
encoderPins[pinB] = true;
|
||||
}
|
||||
|
||||
byte getBit(byte n, byte position)
|
||||
@ -323,7 +359,8 @@ bool PCF8574::checkProgression(byte oldValA, byte oldValB, byte newValA, byte ne
|
||||
return ((newValB == ((validProgression & bit(posFinded+1))>0?HIGH:LOW)) && (newValA == ((validProgression & bit(posFinded+0))>0?HIGH:LOW)) );
|
||||
}
|
||||
|
||||
bool PCF8574::readEncoderValue(uint8_t pinA, uint8_t pinB, volatile long *encoderValue){
|
||||
#ifdef BASIC_ENCODER_ALGORITHM
|
||||
bool PCF8574::readEncoderValue(uint8_t pinA, uint8_t pinB, volatile long *encoderValue){
|
||||
bool changed = false;
|
||||
|
||||
byte na = PCF8574::digitalRead(pinA, true);
|
||||
@ -337,21 +374,21 @@ bool PCF8574::readEncoderValue(uint8_t pinA, uint8_t pinB, volatile long *encode
|
||||
bool vCCW = checkProgression(encoderPinALast, encoderPinBLast, na, nb, validCCW);
|
||||
|
||||
if (nb == LOW) {
|
||||
// checkCW(encoderPinALast, encoderPinBLast, na, nb);
|
||||
*encoderValue = *encoderValue - 1;
|
||||
changed = true;
|
||||
} else {
|
||||
*encoderValue = *encoderValue + 1;
|
||||
changed = true;
|
||||
}
|
||||
// if (nb == LOW && vCW) {
|
||||
// // checkCW(encoderPinALast, encoderPinBLast, na, nb);
|
||||
// *encoderValue = *encoderValue - 1;
|
||||
// changed = true;
|
||||
// } else if (vCCW) {
|
||||
// *encoderValue = *encoderValue + 1;
|
||||
// changed = true;
|
||||
// }
|
||||
|
||||
// if (nb == LOW && vCW) {
|
||||
// // checkCW(encoderPinALast, encoderPinBLast, na, nb);
|
||||
// *encoderValue = *encoderValue - 1;
|
||||
// changed = true;
|
||||
// } else if (vCCW) {
|
||||
// *encoderValue = *encoderValue + 1;
|
||||
// changed = true;
|
||||
// }
|
||||
|
||||
}
|
||||
|
||||
@ -359,7 +396,42 @@ bool PCF8574::readEncoderValue(uint8_t pinA, uint8_t pinB, volatile long *encode
|
||||
encoderValues = (encoderPinBLast!=nb)?encoderValues ^ bit(pinB):encoderValues;
|
||||
|
||||
return changed;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
#ifdef MISCHIANTI_ENCODER_ALGORITHM
|
||||
bool PCF8574::readEncoderValue(uint8_t pinA, uint8_t pinB, volatile long *encoderValue){
|
||||
bool changed = false;
|
||||
|
||||
byte na = PCF8574::digitalRead(pinA, true);
|
||||
byte nb = PCF8574::digitalRead(pinB, true);
|
||||
|
||||
byte encoderPinALast = (encoderValues & bit(pinA))>0?HIGH:LOW;
|
||||
byte encoderPinBLast = (encoderValues & bit(pinB))>0?HIGH:LOW;
|
||||
|
||||
if ((encoderPinALast!=na || encoderPinBLast!=nb) && ((encoderPinALast == LOW) || encoderPinALast==encoderPinBLast) && (na == HIGH)) {
|
||||
DEBUG_PRINT("TO --> ");
|
||||
DEBUG_PRINT(encoderPinALast);
|
||||
DEBUG_PRINT(encoderPinBLast);
|
||||
DEBUG_PRINT(" - ");
|
||||
DEBUG_PRINT(na);
|
||||
DEBUG_PRINT(nb);
|
||||
DEBUG_PRINTLN();
|
||||
|
||||
if (nb == LOW && nb!=na) {
|
||||
*encoderValue = *encoderValue + 1;
|
||||
changed = true;
|
||||
} else if (nb==na && encoderPinALast==encoderPinBLast) {
|
||||
*encoderValue = *encoderValue - 1;
|
||||
changed = true;
|
||||
}
|
||||
}
|
||||
|
||||
encoderValues = (encoderPinALast!=na)?encoderValues ^ bit(pinA):encoderValues;
|
||||
encoderValues = (encoderPinBLast!=nb)?encoderValues ^ bit(pinB):encoderValues;
|
||||
|
||||
return changed;
|
||||
}
|
||||
#endif
|
||||
|
||||
int8_t PCF8574::readEncoderValue(uint8_t pinA, uint8_t pinB) {
|
||||
volatile long encoderValue = 0;
|
||||
|
||||
@ -48,6 +48,10 @@
|
||||
// Uncomment for low memory usage this prevent use of complex DigitalInput structure and free 7byte of memory
|
||||
// #define PCF8574_LOW_LATENCY
|
||||
|
||||
// Select an algorithm to manage encoder progression
|
||||
//#define BASIC_ENCODER_ALGORITHM
|
||||
#define MISCHIANTI_ENCODER_ALGORITHM
|
||||
|
||||
// Define where debug output will be printed.
|
||||
#define DEBUG_PRINTER Serial
|
||||
|
||||
@ -112,6 +116,9 @@ public:
|
||||
|
||||
void encoder(uint8_t pinA, uint8_t pinB);
|
||||
|
||||
void attachInterrupt();
|
||||
void detachInterrupt();
|
||||
|
||||
void readBuffer(bool force = true);
|
||||
uint8_t digitalRead(uint8_t pin, bool forceReadNow = false);
|
||||
#ifndef PCF8574_LOW_MEMORY
|
||||
@ -189,6 +196,7 @@ private:
|
||||
// byte validCCW = B01001011;
|
||||
byte validCW = B01001011;
|
||||
byte validCCW = B11100001;
|
||||
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
|
||||
### If you need more pins [here](https://www.mischianti.org/2019/07/22/pcf8575-i2c-16-bit-digital-i-o-expander/) you can find pcf8575 16bit version of the IC.
|
||||
|
||||
### Version 2.0
|
||||
### Version 2.2
|
||||
|
||||
Library to use i2c analog IC with arduino and esp8266. Can read and write digital value with only 2 wire (perfect for ESP-01).
|
||||
|
||||
|
||||
@ -14,8 +14,16 @@ PCF8574 KEYWORD1
|
||||
|
||||
begin KEYWORD2
|
||||
pinMode KEYWORD2
|
||||
encoder KEYWORD2
|
||||
|
||||
attachInterrupt KEYWORD2
|
||||
detachInterrupt KEYWORD2
|
||||
|
||||
readBuffer KEYWORD2
|
||||
digitalRead KEYWORD2
|
||||
digitalReadAll KEYWORD2
|
||||
digitalWrite KEYWORD2
|
||||
|
||||
readEncoderValue KEYWORD2
|
||||
getLatency KEYWORD2
|
||||
setLatency KEYWORD2
|
||||
@ -1,5 +1,5 @@
|
||||
name=PCF8574 library
|
||||
version=2.0.0
|
||||
version=2.2.0
|
||||
author=Reef
|
||||
maintainer=Renzo Mischianti <renzo.mischianti@gmail.com>
|
||||
sentence=Arduino/ESP8266 library for PCF8574
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user