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Add return status on begin and digitalWrite

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This commit is contained in:
Renzo Mischianti 2020-06-01 21:54:23 +02:00
parent dcf9e35fdc
commit da251b1363
2 changed files with 19 additions and 6 deletions
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13
PCF8574.cpp
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@ -183,7 +183,8 @@ PCF8574::PCF8574(uint8_t address, uint8_t interruptPin, void (*interruptFunctio
/**
* wake up i2c controller
*/
void PCF8574::begin(){
bool PCF8574::begin(){
this->transmissionStatus = 4;
#if !defined(__AVR) && !defined(__STM32F1__) && !defined(TEENSYDUINO)
_wire->begin(_sda, _scl);
#else
@ -215,7 +216,7 @@ void PCF8574::begin(){
writeByteBuffered = writeModeUp;
DEBUG_PRINTLN("Start end trasmission if stop here check pullup resistor.");
_wire->endTransmission();
this->transmissionStatus = _wire->endTransmission();
}
// // If using interrupt set interrupt value to pin
@ -234,6 +235,8 @@ void PCF8574::begin(){
// inizialize last read
lastReadMillis = millis();
return this->isLastTransmissionSuccess();
}
/**
@ -630,7 +633,7 @@ uint8_t PCF8574::digitalRead(uint8_t pin, bool forceReadNow){
* @param pin
* @param value
*/
void PCF8574::digitalWrite(uint8_t pin, uint8_t value){
bool PCF8574::digitalWrite(uint8_t pin, uint8_t value){
DEBUG_PRINTLN("Begin trasmission");
_wire->beginTransmission(_address); //Begin the transmission to PCF8574
DEBUG_PRINT("Value ");
@ -671,7 +674,9 @@ void PCF8574::digitalWrite(uint8_t pin, uint8_t value){
// byteBuffered = (writeByteBuffered & writeMode) & (byteBuffered & readMode);
DEBUG_PRINTLN("Start end trasmission if stop here check pullup resistor.");
_wire->endTransmission();
this->transmissionStatus = _wire->endTransmission();
return this->isLastTransmissionSuccess();
};

12
PCF8574.h
View File

@ -120,7 +120,7 @@ public:
PCF8574(TwoWire *pWire, uint8_t address, uint8_t sda, uint8_t scl, uint8_t interruptPin, void (*interruptFunction)());
#endif
void begin();
bool begin();
void pinMode(uint8_t pin, uint8_t mode, uint8_t output_start = HIGH);
void encoder(uint8_t pinA, uint8_t pinB);
@ -147,7 +147,7 @@ public:
#else
byte digitalReadAll(void);
#endif
void digitalWrite(uint8_t pin, uint8_t value);
bool digitalWrite(uint8_t pin, uint8_t value);
bool readEncoderValue(uint8_t pinA, uint8_t pinB, volatile long *encoderValue);
int8_t readEncoderValue(uint8_t pinA, uint8_t pinB);
@ -160,6 +160,13 @@ public:
this->latency = latency;
}
uint8_t getTransmissionStatusCode() const {
return transmissionStatus;
}
bool isLastTransmissionSuccess(){
return transmissionStatus==0;
}
private:
uint8_t _address;
@ -207,6 +214,7 @@ private:
byte validCW = B01001011;
byte validCCW = B11100001;
uint8_t transmissionStatus = 0;
};
#endif