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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 * wake up i2c controller
*/ */
void PCF8574::begin(){ bool PCF8574::begin(){
this->transmissionStatus = 4;
#if !defined(__AVR) && !defined(__STM32F1__) && !defined(TEENSYDUINO) #if !defined(__AVR) && !defined(__STM32F1__) && !defined(TEENSYDUINO)
_wire->begin(_sda, _scl); _wire->begin(_sda, _scl);
#else #else
@ -215,7 +216,7 @@ void PCF8574::begin(){
writeByteBuffered = writeModeUp; writeByteBuffered = writeModeUp;
DEBUG_PRINTLN("Start end trasmission if stop here check pullup resistor."); 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 // // If using interrupt set interrupt value to pin
@ -234,6 +235,8 @@ void PCF8574::begin(){
// inizialize last read // inizialize last read
lastReadMillis = millis(); lastReadMillis = millis();
return this->isLastTransmissionSuccess();
} }
/** /**
@ -630,7 +633,7 @@ uint8_t PCF8574::digitalRead(uint8_t pin, bool forceReadNow){
* @param pin * @param pin
* @param value * @param value
*/ */
void PCF8574::digitalWrite(uint8_t pin, uint8_t value){ bool PCF8574::digitalWrite(uint8_t pin, uint8_t value){
DEBUG_PRINTLN("Begin trasmission"); DEBUG_PRINTLN("Begin trasmission");
_wire->beginTransmission(_address); //Begin the transmission to PCF8574 _wire->beginTransmission(_address); //Begin the transmission to PCF8574
DEBUG_PRINT("Value "); DEBUG_PRINT("Value ");
@ -671,7 +674,9 @@ void PCF8574::digitalWrite(uint8_t pin, uint8_t value){
// byteBuffered = (writeByteBuffered & writeMode) & (byteBuffered & readMode); // byteBuffered = (writeByteBuffered & writeMode) & (byteBuffered & readMode);
DEBUG_PRINTLN("Start end trasmission if stop here check pullup resistor."); 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)()); PCF8574(TwoWire *pWire, uint8_t address, uint8_t sda, uint8_t scl, uint8_t interruptPin, void (*interruptFunction)());
#endif #endif
void begin(); bool begin();
void pinMode(uint8_t pin, uint8_t mode, uint8_t output_start = HIGH); void pinMode(uint8_t pin, uint8_t mode, uint8_t output_start = HIGH);
void encoder(uint8_t pinA, uint8_t pinB); void encoder(uint8_t pinA, uint8_t pinB);
@ -147,7 +147,7 @@ public:
#else #else
byte digitalReadAll(void); byte digitalReadAll(void);
#endif #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); bool readEncoderValue(uint8_t pinA, uint8_t pinB, volatile long *encoderValue);
int8_t readEncoderValue(uint8_t pinA, uint8_t pinB); int8_t readEncoderValue(uint8_t pinA, uint8_t pinB);
@ -160,6 +160,13 @@ public:
this->latency = latency; this->latency = latency;
} }
uint8_t getTransmissionStatusCode() const {
return transmissionStatus;
}
bool isLastTransmissionSuccess(){
return transmissionStatus==0;
}
private: private:
uint8_t _address; uint8_t _address;
@ -207,6 +214,7 @@ private:
byte validCW = B01001011; byte validCW = B01001011;
byte validCCW = B11100001; byte validCCW = B11100001;
uint8_t transmissionStatus = 0;
}; };
#endif #endif