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digitalWriteAll

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This commit is contained in:
Renzo Mischianti 2020-10-03 23:31:53 +02:00
parent 5a60c45ed9
commit b7655a7735
2 changed files with 67 additions and 0 deletions
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61
PCF8574.cpp
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@ -679,4 +679,65 @@ bool PCF8574::digitalWrite(uint8_t pin, uint8_t value){
return this->isLastTransmissionSuccess();
};
#ifndef PCF8574_LOW_MEMORY
/**
* Read value of all INPUT pin
* Debounce read more fast than 10millis, non managed for interrupt mode
* @return
*/
void PCF8574::setVal(uint8_t pin, uint8_t value){
if (value==HIGH){
writeByteBuffered = writeByteBuffered | bit(pin);
byteBuffered = writeByteBuffered | bit(pin);
}else{
writeByteBuffered = writeByteBuffered & ~bit(pin);
byteBuffered = writeByteBuffered & ~bit(pin);
}
}
bool PCF8574::digitalWriteAll(PCF8574::DigitalInput digitalInput){
setVal(0, digitalInput.p0);
setVal(1, digitalInput.p1);
setVal(2, digitalInput.p2);
setVal(3, digitalInput.p3);
setVal(4, digitalInput.p4);
setVal(5, digitalInput.p5);
setVal(6, digitalInput.p6);
setVal(7, digitalInput.p7);
return digitalWriteAllBytes(writeByteBuffered);
}
#else
bool PCF8574::digitalWriteAll(byte digitalInput){
return digitalWriteAllBytes(digitalInput);
}
#endif
bool PCF8574::digitalWriteAllBytes(byte allpins){
_wire->beginTransmission(_address); //Begin the transmission to PCF8574
// writeByteBuffered = writeByteBuffered & (~writeMode & byteBuffered);
writeByteBuffered = allpins;
byteBuffered = (writeByteBuffered & writeMode) | (resetInitial & readMode);
// byteBuffered = (writeByteBuffered & writeMode) | (byteBuffered & readMode);
DEBUG_PRINT(" byteBuffered ");
DEBUG_PRINTLN(byteBuffered, BIN);
DEBUG_PRINT("Going to write data ");
DEBUG_PRINTLN(writeByteBuffered, BIN);
_wire->write(byteBuffered);
byteBuffered = (writeByteBuffered & writeMode) | (initialBuffer & readMode);
// byteBuffered = (writeByteBuffered & writeMode) & (byteBuffered & readMode);
DEBUG_PRINTLN("Start end trasmission if stop here check pullup resistor.");
this->transmissionStatus = _wire->endTransmission();
return this->isLastTransmissionSuccess();
}

6
PCF8574.h
View File

@ -144,8 +144,11 @@ public:
DigitalInput digitalReadAll(void);
bool digitalWriteAll(PCF8574::DigitalInput digitalInput);
#else
byte digitalReadAll(void);
bool digitalWriteAll(byte digitalInput);
#endif
bool digitalWrite(uint8_t pin, uint8_t value);
@ -215,6 +218,9 @@ private:
byte validCCW = B11100001;
uint8_t transmissionStatus = 0;
void setVal(uint8_t pin, uint8_t value);
bool digitalWriteAllBytes(byte allpins);
};
#endif